[PATCH 6.6 00/77] 6.6.85-rc1 review

[PATCH 6.6 00/77] 6.6.85-rc1 review

[Greg Kroah-Hartman]

This is the start of the stable review cycle for the 6.6.85 release.
There are 77 patches in this series, all will be posted as a response
to this one.  If anyone has any issues with these being applied, please
let me know.

Responses should be made by Thu, 27 Mar 2025 12:21:27 +0000.
Anything received after that time might be too late.

The whole patch series can be found in one patch at:
	https://www.kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.6.85-rc1.gz
or in the git tree and branch at:
	git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-6.6.y
and the diffstat can be found below.

thanks,

greg k-h

-------------
Pseudo-Shortlog of commits:

Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    Linux 6.6.85-rc1

Sebastian Andrzej Siewior <bigeasy@linutronix.de>
    netfilter: nft_counter: Use u64_stats_t for statistic.

Benjamin Berg <benjamin.berg@intel.com>
    wifi: iwlwifi: mvm: ensure offloading TID queue exists

Miri Korenblit <miriam.rachel.korenblit@intel.com>
    wifi: iwlwifi: support BIOS override for 5G9 in CA also in LARI version 8

Shravya KN <shravya.k-n@broadcom.com>
    bnxt_en: Fix receive ring space parameters when XDP is active

Josef Bacik <josef@toxicpanda.com>
    btrfs: make sure that WRITTEN is set on all metadata blocks

Dietmar Eggemann <dietmar.eggemann@arm.com>
    Revert "sched/core: Reduce cost of sched_move_task when config autogroup"

Justin Klaassen <justin@tidylabs.net>
    arm64: dts: rockchip: fix u2phy1_host status for NanoPi R4S

Mark Rutland <mark.rutland@arm.com>
    KVM: arm64: Eagerly switch ZCR_EL{1,2}

Mark Rutland <mark.rutland@arm.com>
    KVM: arm64: Mark some header functions as inline

Mark Rutland <mark.rutland@arm.com>
    KVM: arm64: Refactor exit handlers

Mark Rutland <mark.rutland@arm.com>
    KVM: arm64: Remove VHE host restore of CPACR_EL1.SMEN

Mark Rutland <mark.rutland@arm.com>
    KVM: arm64: Remove VHE host restore of CPACR_EL1.ZEN

Mark Rutland <mark.rutland@arm.com>
    KVM: arm64: Remove host FPSIMD saving for non-protected KVM

Mark Rutland <mark.rutland@arm.com>
    KVM: arm64: Unconditionally save+flush host FPSIMD/SVE/SME state

Fuad Tabba <tabba@google.com>
    KVM: arm64: Calculate cptr_el2 traps on activating traps

Arthur Mongodin <amongodin@randorisec.fr>
    mptcp: Fix data stream corruption in the address announcement

Namjae Jeon <linkinjeon@kernel.org>
    ksmbd: fix incorrect validation for num_aces field of smb_acl

Mario Limonciello <mario.limonciello@amd.com>
    drm/amd/display: Use HW lock mgr for PSR1 when only one eDP

Martin Tsai <martin.tsai@amd.com>
    drm/amd/display: should support dmub hw lock on Replay

David Rosca <david.rosca@amd.com>
    drm/amdgpu: Fix JPEG video caps max size for navi1x and raven

David Rosca <david.rosca@amd.com>
    drm/amdgpu: Fix MPEG2, MPEG4 and VC1 video caps max size

qianyi liu <liuqianyi125@gmail.com>
    drm/sched: Fix fence reference count leak

Nikita Zhandarovich <n.zhandarovich@fintech.ru>
    drm/radeon: fix uninitialized size issue in radeon_vce_cs_parse()

Saranya R <quic_sarar@quicinc.com>
    soc: qcom: pdr: Fix the potential deadlock

Sven Eckelmann <sven@narfation.org>
    batman-adv: Ignore own maximum aggregation size during RX

Gavrilov Ilia <Ilia.Gavrilov@infotecs.ru>
    xsk: fix an integer overflow in xp_create_and_assign_umem()

Ard Biesheuvel <ardb@kernel.org>
    efi/libstub: Avoid physical address 0x0 when doing random allocation

Geert Uytterhoeven <geert+renesas@glider.be>
    ARM: shmobile: smp: Enforce shmobile_smp_* alignment

Stefan Eichenberger <stefan.eichenberger@toradex.com>
    ARM: dts: imx6qdl-apalis: Fix poweroff on Apalis iMX6

Shakeel Butt <shakeel.butt@linux.dev>
    memcg: drain obj stock on cpu hotplug teardown

Ye Bin <yebin10@huawei.com>
    proc: fix UAF in proc_get_inode()

Zi Yan <ziy@nvidia.com>
    mm/migrate: fix shmem xarray update during migration

Raphael S. Carvalho <raphaelsc@scylladb.com>
    mm: fix error handling in __filemap_get_folio() with FGP_NOWAIT

Gu Bowen <gubowen5@huawei.com>
    mmc: atmel-mci: Add missing clk_disable_unprepare()

Kamal Dasu <kamal.dasu@broadcom.com>
    mmc: sdhci-brcmstb: add cqhci suspend/resume to PM ops

Dragan Simic <dsimic@manjaro.org>
    arm64: dts: rockchip: Add missing PCIe supplies to RockPro64 board dtsi

Quentin Schulz <quentin.schulz@cherry.de>
    arm64: dts: rockchip: fix pinmux of UART0 for PX30 Ringneck on Haikou

Stefan Eichenberger <stefan.eichenberger@toradex.com>
    arm64: dts: freescale: imx8mm-verdin-dahlia: add Microphone Jack to sound card

Stefan Eichenberger <stefan.eichenberger@toradex.com>
    arm64: dts: freescale: imx8mp-verdin-dahlia: add Microphone Jack to sound card

Dan Carpenter <dan.carpenter@linaro.org>
    accel/qaic: Fix integer overflow in qaic_validate_req()

Christian Eggers <ceggers@arri.de>
    regulator: check that dummy regulator has been probed before using it

Christian Eggers <ceggers@arri.de>
    regulator: dummy: force synchronous probing

E Shattow <e@freeshell.de>
    riscv: dts: starfive: Fix a typo in StarFive JH7110 pin function definitions

Maíra Canal <mcanal@igalia.com>
    drm/v3d: Don't run jobs that have errors flagged in its fence

Haibo Chen <haibo.chen@nxp.com>
    can: flexcan: disable transceiver during system PM

Haibo Chen <haibo.chen@nxp.com>
    can: flexcan: only change CAN state when link up in system PM

Vincent Mailhol <mailhol.vincent@wanadoo.fr>
    can: ucan: fix out of bound read in strscpy() source

Biju Das <biju.das.jz@bp.renesas.com>
    can: rcar_canfd: Fix page entries in the AFL list

Andreas Kemnade <andreas@kemnade.info>
    i2c: omap: fix IRQ storms

Guillaume Nault <gnault@redhat.com>
    Revert "gre: Fix IPv6 link-local address generation."

Lin Ma <linma@zju.edu.cn>
    net/neighbor: add missing policy for NDTPA_QUEUE_LENBYTES

Justin Iurman <justin.iurman@uliege.be>
    net: lwtunnel: fix recursion loops

Dan Carpenter <dan.carpenter@linaro.org>
    net: atm: fix use after free in lec_send()

Kuniyuki Iwashima <kuniyu@amazon.com>
    ipv6: Set errno after ip_fib_metrics_init() in ip6_route_info_create().

Kuniyuki Iwashima <kuniyu@amazon.com>
    ipv6: Fix memleak of nhc_pcpu_rth_output in fib_check_nh_v6_gw().

David Lechner <dlechner@baylibre.com>
    ARM: davinci: da850: fix selecting ARCH_DAVINCI_DA8XX

Jeffrey Hugo <quic_jhugo@quicinc.com>
    accel/qaic: Fix possible data corruption in BOs > 2G

Arkadiusz Bokowy <arkadiusz.bokowy@gmail.com>
    Bluetooth: hci_event: Fix connection regression between LE and non-LE adapters

Dan Carpenter <dan.carpenter@linaro.org>
    Bluetooth: Fix error code in chan_alloc_skb_cb()

Junxian Huang <huangjunxian6@hisilicon.com>
    RDMA/hns: Fix wrong value of max_sge_rd

Junxian Huang <huangjunxian6@hisilicon.com>
    RDMA/hns: Fix a missing rollback in error path of hns_roce_create_qp_common()

Junxian Huang <huangjunxian6@hisilicon.com>
    RDMA/hns: Fix unmatched condition in error path of alloc_user_qp_db()

Junxian Huang <huangjunxian6@hisilicon.com>
    RDMA/hns: Fix soft lockup during bt pages loop

Saravanan Vajravel <saravanan.vajravel@broadcom.com>
    RDMA/bnxt_re: Avoid clearing VLAN_ID mask in modify qp path

Phil Elwell <phil@raspberrypi.com>
    ARM: dts: bcm2711: Don't mark timer regs unconfigured

Arnd Bergmann <arnd@arndb.de>
    ARM: OMAP1: select CONFIG_GENERIC_IRQ_CHIP

Qasim Ijaz <qasdev00@gmail.com>
    RDMA/mlx5: Handle errors returned from mlx5r_ib_rate()

Kashyap Desai <kashyap.desai@broadcom.com>
    RDMA/bnxt_re: Add missing paranthesis in map_qp_id_to_tbl_indx

Yao Zi <ziyao@disroot.org>
    arm64: dts: rockchip: Remove undocumented sdmmc property from lubancat-1

Phil Elwell <phil@raspberrypi.com>
    ARM: dts: bcm2711: PL011 UARTs are actually r1p5

Peng Fan <peng.fan@nxp.com>
    soc: imx8m: Unregister cpufreq and soc dev in cleanup path

Marek Vasut <marex@denx.de>
    soc: imx8m: Use devm_* to simplify probe failure handling

Marek Vasut <marex@denx.de>
    soc: imx8m: Remove global soc_uid

Cosmin Ratiu <cratiu@nvidia.com>
    xfrm_output: Force software GSO only in tunnel mode

Alexandre Cassen <acassen@corp.free.fr>
    xfrm: fix tunnel mode TX datapath in packet offload mode

Alexander Stein <alexander.stein@ew.tq-group.com>
    arm64: dts: freescale: tqma8mpql: Fix vqmmc-supply

Joe Hattori <joe@pf.is.s.u-tokyo.ac.jp>
    firmware: imx-scu: fix OF node leak in .probe()


-------------

Diffstat:

 Makefile                                           |   4 +-
 arch/arm/boot/dts/broadcom/bcm2711.dtsi            |  11 +-
 arch/arm/boot/dts/nxp/imx/imx6qdl-apalis.dtsi      |  10 +-
 arch/arm/mach-davinci/Kconfig                      |   1 +
 arch/arm/mach-omap1/Kconfig                        |   1 +
 arch/arm/mach-shmobile/headsmp.S                   |   1 +
 .../boot/dts/freescale/imx8mm-verdin-dahlia.dtsi   |   6 +-
 .../arm64/boot/dts/freescale/imx8mp-tqma8mpql.dtsi |  16 +--
 .../boot/dts/freescale/imx8mp-verdin-dahlia.dtsi   |   6 +-
 .../boot/dts/rockchip/px30-ringneck-haikou.dts     |   2 +
 arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dts |   2 +-
 arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dtsi |   2 +
 arch/arm64/boot/dts/rockchip/rk3566-lubancat-1.dts |   1 -
 arch/arm64/include/asm/kvm_host.h                  |   7 +-
 arch/arm64/include/asm/kvm_hyp.h                   |   1 +
 arch/arm64/kernel/fpsimd.c                         |  25 ----
 arch/arm64/kvm/arm.c                               |   1 -
 arch/arm64/kvm/fpsimd.c                            |  89 +++---------
 arch/arm64/kvm/hyp/entry.S                         |   5 +
 arch/arm64/kvm/hyp/include/hyp/switch.h            | 106 ++++++++++-----
 arch/arm64/kvm/hyp/nvhe/hyp-main.c                 |  15 +-
 arch/arm64/kvm/hyp/nvhe/pkvm.c                     |  29 +---
 arch/arm64/kvm/hyp/nvhe/switch.c                   | 112 ++++++++++-----
 arch/arm64/kvm/hyp/vhe/switch.c                    |  13 +-
 arch/arm64/kvm/reset.c                             |   3 +
 arch/riscv/boot/dts/starfive/jh7110-pinfunc.h      |   2 +-
 drivers/accel/qaic/qaic_data.c                     |   9 +-
 drivers/firmware/efi/libstub/randomalloc.c         |   4 +
 drivers/firmware/imx/imx-scu.c                     |   1 +
 drivers/gpu/drm/amd/amdgpu/nv.c                    |  20 +--
 drivers/gpu/drm/amd/amdgpu/soc15.c                 |  20 +--
 drivers/gpu/drm/amd/amdgpu/vi.c                    |  36 ++---
 .../gpu/drm/amd/display/dc/dce/dmub_hw_lock_mgr.c  |  15 ++
 drivers/gpu/drm/radeon/radeon_vce.c                |   2 +-
 drivers/gpu/drm/scheduler/sched_entity.c           |  11 +-
 drivers/gpu/drm/v3d/v3d_sched.c                    |   9 +-
 drivers/i2c/busses/i2c-omap.c                      |  26 +---
 drivers/infiniband/hw/bnxt_re/qplib_fp.c           |   2 -
 drivers/infiniband/hw/bnxt_re/qplib_rcfw.h         |   3 +-
 drivers/infiniband/hw/hns/hns_roce_hem.c           |  16 ++-
 drivers/infiniband/hw/hns/hns_roce_main.c          |   2 +-
 drivers/infiniband/hw/hns/hns_roce_qp.c            |  10 +-
 drivers/infiniband/hw/mlx5/ah.c                    |  14 +-
 drivers/mmc/host/atmel-mci.c                       |   4 +-
 drivers/mmc/host/sdhci-brcmstb.c                   |  10 ++
 drivers/net/can/flexcan/flexcan-core.c             |  18 ++-
 drivers/net/can/rcar/rcar_canfd.c                  |  28 ++--
 drivers/net/can/usb/ucan.c                         |  43 +++---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c          |  10 +-
 drivers/net/wireless/intel/iwlwifi/fw/file.h       |   4 +-
 drivers/net/wireless/intel/iwlwifi/mvm/d3.c        |   9 +-
 drivers/net/wireless/intel/iwlwifi/mvm/fw.c        |  37 ++++-
 drivers/net/wireless/intel/iwlwifi/mvm/sta.c       |  28 ++++
 drivers/net/wireless/intel/iwlwifi/mvm/sta.h       |   3 +-
 drivers/regulator/core.c                           |  12 +-
 drivers/regulator/dummy.c                          |   2 +-
 drivers/soc/imx/soc-imx8m.c                        | 151 ++++++++++-----------
 drivers/soc/qcom/pdr_interface.c                   |   8 +-
 fs/btrfs/tree-checker.c                            |  30 ++--
 fs/btrfs/tree-checker.h                            |   1 +
 fs/proc/generic.c                                  |  10 +-
 fs/proc/inode.c                                    |   6 +-
 fs/proc/internal.h                                 |  14 ++
 fs/smb/server/smbacl.c                             |   5 +-
 include/linux/proc_fs.h                            |   7 +-
 include/net/bluetooth/hci.h                        |   2 +-
 kernel/sched/core.c                                |  22 +--
 mm/filemap.c                                       |  13 +-
 mm/memcontrol.c                                    |   9 ++
 mm/migrate.c                                       |  10 +-
 net/atm/lec.c                                      |   3 +-
 net/batman-adv/bat_iv_ogm.c                        |   3 +-
 net/batman-adv/bat_v_ogm.c                         |   3 +-
 net/bluetooth/6lowpan.c                            |   7 +-
 net/core/lwtunnel.c                                |  65 +++++++--
 net/core/neighbour.c                               |   1 +
 net/ipv6/addrconf.c                                |  15 +-
 net/ipv6/route.c                                   |   5 +-
 net/mptcp/options.c                                |   6 +-
 net/netfilter/nft_counter.c                        |  90 ++++++------
 net/xdp/xsk_buff_pool.c                            |   2 +-
 net/xfrm/xfrm_output.c                             |  43 +++++-
 82 files changed, 810 insertions(+), 600 deletions(-)

[PATCH 6.6 01/77] firmware: imx-scu: fix OF node leak in .probe()

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Joe Hattori <joe@pf.is.s.u-tokyo.ac.jp>

[ Upstream commit fbf10b86f6057cf79300720da4ea4b77e6708b0d ]

imx_scu_probe() calls of_parse_phandle_with_args(), but does not
release the OF node reference obtained by it. Add a of_node_put() call
after done with the node.

Fixes: f25a066d1a07 ("firmware: imx-scu: Support one TX and one RX")
Signed-off-by: Joe Hattori <joe@pf.is.s.u-tokyo.ac.jp>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/firmware/imx/imx-scu.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/firmware/imx/imx-scu.c b/drivers/firmware/imx/imx-scu.c
index 1dd4362ef9a3f..8c28e25ddc8a6 100644
--- a/drivers/firmware/imx/imx-scu.c
+++ b/drivers/firmware/imx/imx-scu.c
@@ -280,6 +280,7 @@ static int imx_scu_probe(struct platform_device *pdev)
 		return ret;
 
 	sc_ipc->fast_ipc = of_device_is_compatible(args.np, "fsl,imx8-mu-scu");
+	of_node_put(args.np);
 
 	num_channel = sc_ipc->fast_ipc ? 2 : SCU_MU_CHAN_NUM;
 	for (i = 0; i < num_channel; i++) {
-- 
2.39.5

[PATCH 6.6 02/77] arm64: dts: freescale: tqma8mpql: Fix vqmmc-supply

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Alexander Stein <alexander.stein@ew.tq-group.com>

[ Upstream commit 38f59e0e8bd2b3e1319716e4aeaeb9a6223b006d ]

eMMC is supplied by BUCK5 rail. Use the actual regulator instead of
a virtual fixed regulator.

Fixes: 418d1d840e421 ("arm64: dts: freescale: add initial device tree for TQMa8MPQL with i.MX8MP")
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 .../boot/dts/freescale/imx8mp-tqma8mpql.dtsi     | 16 ++++------------
 1 file changed, 4 insertions(+), 12 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-tqma8mpql.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-tqma8mpql.dtsi
index ebc29a950ba9a..e9413c9ccafc5 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-tqma8mpql.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp-tqma8mpql.dtsi
@@ -1,7 +1,8 @@
 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
 /*
- * Copyright 2021-2022 TQ-Systems GmbH
- * Author: Alexander Stein <alexander.stein@tq-group.com>
+ * Copyright 2021-2025 TQ-Systems GmbH <linux@ew.tq-group.com>,
+ * D-82229 Seefeld, Germany.
+ * Author: Alexander Stein
  */
 
 #include "imx8mp.dtsi"
@@ -23,15 +24,6 @@ reg_vcc3v3: regulator-vcc3v3 {
 		regulator-max-microvolt = <3300000>;
 		regulator-always-on;
 	};
-
-	/* e-MMC IO, needed for HS modes */
-	reg_vcc1v8: regulator-vcc1v8 {
-		compatible = "regulator-fixed";
-		regulator-name = "VCC1V8";
-		regulator-min-microvolt = <1800000>;
-		regulator-max-microvolt = <1800000>;
-		regulator-always-on;
-	};
 };
 
 &A53_0 {
@@ -193,7 +185,7 @@ &usdhc3 {
 	no-sd;
 	no-sdio;
 	vmmc-supply = <&reg_vcc3v3>;
-	vqmmc-supply = <&reg_vcc1v8>;
+	vqmmc-supply = <&buck5_reg>;
 	status = "okay";
 };
 
-- 
2.39.5

[PATCH 6.6 03/77] xfrm: fix tunnel mode TX datapath in packet offload mode

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Alexandre Cassen <acassen@corp.free.fr>

[ Upstream commit 5eddd76ec2fd1988f0a3450fde9730b10dd22992 ]

Packets that match the output xfrm policy are delivered to the netstack.
In IPsec packet mode for tunnel mode, the HW is responsible for building
the hard header and outer IP header. In such a situation, the inner
header may refer to a network that is not directly reachable by the host,
resulting in a failed neighbor resolution. The packet is then dropped.
xfrm policy defines the netdevice to use for xmit so we can send packets
directly to it.

Makes direct xmit exclusive to tunnel mode, since some rules may apply
in transport mode.

Fixes: f8a70afafc17 ("xfrm: add TX datapath support for IPsec packet offload mode")
Signed-off-by: Alexandre Cassen <acassen@corp.free.fr>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/xfrm/xfrm_output.c | 41 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)

diff --git a/net/xfrm/xfrm_output.c b/net/xfrm/xfrm_output.c
index e5722c95b8bb3..9160a5e09041d 100644
--- a/net/xfrm/xfrm_output.c
+++ b/net/xfrm/xfrm_output.c
@@ -610,6 +610,40 @@ int xfrm_output_resume(struct sock *sk, struct sk_buff *skb, int err)
 }
 EXPORT_SYMBOL_GPL(xfrm_output_resume);
 
+static int xfrm_dev_direct_output(struct sock *sk, struct xfrm_state *x,
+				  struct sk_buff *skb)
+{
+	struct dst_entry *dst = skb_dst(skb);
+	struct net *net = xs_net(x);
+	int err;
+
+	dst = skb_dst_pop(skb);
+	if (!dst) {
+		XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTERROR);
+		kfree_skb(skb);
+		return -EHOSTUNREACH;
+	}
+	skb_dst_set(skb, dst);
+	nf_reset_ct(skb);
+
+	err = skb_dst(skb)->ops->local_out(net, sk, skb);
+	if (unlikely(err != 1)) {
+		kfree_skb(skb);
+		return err;
+	}
+
+	/* In transport mode, network destination is
+	 * directly reachable, while in tunnel mode,
+	 * inner packet network may not be. In packet
+	 * offload type, HW is responsible for hard
+	 * header packet mangling so directly xmit skb
+	 * to netdevice.
+	 */
+	skb->dev = x->xso.dev;
+	__skb_push(skb, skb->dev->hard_header_len);
+	return dev_queue_xmit(skb);
+}
+
 static int xfrm_output2(struct net *net, struct sock *sk, struct sk_buff *skb)
 {
 	return xfrm_output_resume(sk, skb, 1);
@@ -729,6 +763,13 @@ int xfrm_output(struct sock *sk, struct sk_buff *skb)
 			return -EHOSTUNREACH;
 		}
 
+		/* Exclusive direct xmit for tunnel mode, as
+		 * some filtering or matching rules may apply
+		 * in transport mode.
+		 */
+		if (x->props.mode == XFRM_MODE_TUNNEL)
+			return xfrm_dev_direct_output(sk, x, skb);
+
 		return xfrm_output_resume(sk, skb, 0);
 	}
 
-- 
2.39.5

[PATCH 6.6 04/77] xfrm_output: Force software GSO only in tunnel mode

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Cosmin Ratiu <cratiu@nvidia.com>

[ Upstream commit 0aae2867aa6067f73d066bc98385e23c8454a1d7 ]

The cited commit fixed a software GSO bug with VXLAN + IPSec in tunnel
mode. Unfortunately, it is slightly broader than necessary, as it also
severely affects performance for Geneve + IPSec transport mode over a
device capable of both HW GSO and IPSec crypto offload. In this case,
xfrm_output unnecessarily triggers software GSO instead of letting the
HW do it. In simple iperf3 tests over Geneve + IPSec transport mode over
a back-2-back pair of NICs with MTU 1500, the performance was observed
to be up to 6x worse when doing software GSO compared to leaving it to
the hardware.

This commit makes xfrm_output only trigger software GSO in crypto
offload cases for already encapsulated packets in tunnel mode, as not
doing so would then cause the inner tunnel skb->inner_networking_header
to be overwritten and break software GSO for that packet later if the
device turns out to not be capable of HW GSO.

Taking a closer look at the conditions for the original bug, to better
understand the reasons for this change:
- vxlan_build_skb -> iptunnel_handle_offloads sets inner_protocol and
  inner network header.
- then, udp_tunnel_xmit_skb -> ip_tunnel_xmit adds outer transport and
  network headers.
- later in the xmit path, xfrm_output -> xfrm_outer_mode_output ->
  xfrm4_prepare_output -> xfrm4_tunnel_encap_add overwrites the inner
  network header with the one set in ip_tunnel_xmit before adding the
  second outer header.
- __dev_queue_xmit -> validate_xmit_skb checks whether GSO segmentation
  needs to happen based on dev features. In the original bug, the hw
  couldn't segment the packets, so skb_gso_segment was invoked.
- deep in the .gso_segment callback machinery, __skb_udp_tunnel_segment
  tries to use the wrong inner network header, expecting the one set in
  iptunnel_handle_offloads but getting the one set by xfrm instead.
- a bit later, ipv6_gso_segment accesses the wrong memory based on that
  wrong inner network header.

With the new change, the original bug (or similar ones) cannot happen
again, as xfrm will now trigger software GSO before applying a tunnel.
This concern doesn't exist in packet offload mode, when the HW adds
encapsulation headers. For the non-offloaded packets (crypto in SW),
software GSO is still done unconditionally in the else branch.

Reviewed-by: Dragos Tatulea <dtatulea@nvidia.com>
Reviewed-by: Yael Chemla <ychemla@nvidia.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Fixes: a204aef9fd77 ("xfrm: call xfrm_output_gso when inner_protocol is set in xfrm_output")
Signed-off-by: Cosmin Ratiu <cratiu@nvidia.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/xfrm/xfrm_output.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/xfrm/xfrm_output.c b/net/xfrm/xfrm_output.c
index 9160a5e09041d..a30538a980cc7 100644
--- a/net/xfrm/xfrm_output.c
+++ b/net/xfrm/xfrm_output.c
@@ -793,7 +793,7 @@ int xfrm_output(struct sock *sk, struct sk_buff *skb)
 		skb->encapsulation = 1;
 
 		if (skb_is_gso(skb)) {
-			if (skb->inner_protocol)
+			if (skb->inner_protocol && x->props.mode == XFRM_MODE_TUNNEL)
 				return xfrm_output_gso(net, sk, skb);
 
 			skb_shinfo(skb)->gso_type |= SKB_GSO_ESP;
-- 
2.39.5

[PATCH 6.6 05/77] soc: imx8m: Remove global soc_uid

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Marek Vasut <marex@denx.de>

[ Upstream commit 9c1c02fe8d7f33c18547b79c41f3fa41ef7bae8f ]

The static global soc_uid is only ever used as kasprintf() parameter in
imx8m_soc_probe(). Pass pointer to local u64 variable to .soc_revision()
callback instead and let the .soc_revision() callback fill in the content.
Remove the unnecessary static global variable.

Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Stable-dep-of: cf7139aac463 ("soc: imx8m: Unregister cpufreq and soc dev in cleanup path")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/soc/imx/soc-imx8m.c | 31 +++++++++++++++----------------
 1 file changed, 15 insertions(+), 16 deletions(-)

diff --git a/drivers/soc/imx/soc-imx8m.c b/drivers/soc/imx/soc-imx8m.c
index 1ff8c7d847a9e..8ccd41e219044 100644
--- a/drivers/soc/imx/soc-imx8m.c
+++ b/drivers/soc/imx/soc-imx8m.c
@@ -30,11 +30,9 @@
 
 struct imx8_soc_data {
 	char *name;
-	int (*soc_revision)(u32 *socrev);
+	int (*soc_revision)(u32 *socrev, u64 *socuid);
 };
 
-static u64 soc_uid;
-
 #ifdef CONFIG_HAVE_ARM_SMCCC
 static u32 imx8mq_soc_revision_from_atf(void)
 {
@@ -51,7 +49,7 @@ static u32 imx8mq_soc_revision_from_atf(void)
 static inline u32 imx8mq_soc_revision_from_atf(void) { return 0; };
 #endif
 
-static int imx8mq_soc_revision(u32 *socrev)
+static int imx8mq_soc_revision(u32 *socrev, u64 *socuid)
 {
 	struct device_node *np;
 	void __iomem *ocotp_base;
@@ -89,9 +87,9 @@ static int imx8mq_soc_revision(u32 *socrev)
 			rev = REV_B1;
 	}
 
-	soc_uid = readl_relaxed(ocotp_base + OCOTP_UID_HIGH);
-	soc_uid <<= 32;
-	soc_uid |= readl_relaxed(ocotp_base + OCOTP_UID_LOW);
+	*socuid = readl_relaxed(ocotp_base + OCOTP_UID_HIGH);
+	*socuid <<= 32;
+	*socuid |= readl_relaxed(ocotp_base + OCOTP_UID_LOW);
 
 	*socrev = rev;
 
@@ -109,7 +107,7 @@ static int imx8mq_soc_revision(u32 *socrev)
 	return ret;
 }
 
-static int imx8mm_soc_uid(void)
+static int imx8mm_soc_uid(u64 *socuid)
 {
 	void __iomem *ocotp_base;
 	struct device_node *np;
@@ -136,9 +134,9 @@ static int imx8mm_soc_uid(void)
 
 	clk_prepare_enable(clk);
 
-	soc_uid = readl_relaxed(ocotp_base + OCOTP_UID_HIGH + offset);
-	soc_uid <<= 32;
-	soc_uid |= readl_relaxed(ocotp_base + OCOTP_UID_LOW + offset);
+	*socuid = readl_relaxed(ocotp_base + OCOTP_UID_HIGH + offset);
+	*socuid <<= 32;
+	*socuid |= readl_relaxed(ocotp_base + OCOTP_UID_LOW + offset);
 
 	clk_disable_unprepare(clk);
 	clk_put(clk);
@@ -151,7 +149,7 @@ static int imx8mm_soc_uid(void)
 	return ret;
 }
 
-static int imx8mm_soc_revision(u32 *socrev)
+static int imx8mm_soc_revision(u32 *socrev, u64 *socuid)
 {
 	struct device_node *np;
 	void __iomem *anatop_base;
@@ -172,7 +170,7 @@ static int imx8mm_soc_revision(u32 *socrev)
 	iounmap(anatop_base);
 	of_node_put(np);
 
-	return imx8mm_soc_uid();
+	return imx8mm_soc_uid(socuid);
 
 err_iomap:
 	of_node_put(np);
@@ -215,10 +213,11 @@ static __maybe_unused const struct of_device_id imx8_soc_match[] = {
 static int imx8m_soc_probe(struct platform_device *pdev)
 {
 	struct soc_device_attribute *soc_dev_attr;
-	struct soc_device *soc_dev;
+	const struct imx8_soc_data *data;
 	const struct of_device_id *id;
+	struct soc_device *soc_dev;
 	u32 soc_rev = 0;
-	const struct imx8_soc_data *data;
+	u64 soc_uid = 0;
 	int ret;
 
 	soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
@@ -241,7 +240,7 @@ static int imx8m_soc_probe(struct platform_device *pdev)
 	if (data) {
 		soc_dev_attr->soc_id = data->name;
 		if (data->soc_revision) {
-			ret = data->soc_revision(&soc_rev);
+			ret = data->soc_revision(&soc_rev, &soc_uid);
 			if (ret)
 				goto free_soc;
 		}
-- 
2.39.5

[PATCH 6.6 06/77] soc: imx8m: Use devm_* to simplify probe failure handling

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Marek Vasut <marex@denx.de>

[ Upstream commit 22b03a4e957e462b380a982759ccf0f6554735d3 ]

Use device managed functions to simplify handling of failures during
probe. Remove fail paths which are no longer necessary.

Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Stable-dep-of: cf7139aac463 ("soc: imx8m: Unregister cpufreq and soc dev in cleanup path")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/soc/imx/soc-imx8m.c | 92 ++++++++++++-------------------------
 1 file changed, 29 insertions(+), 63 deletions(-)

diff --git a/drivers/soc/imx/soc-imx8m.c b/drivers/soc/imx/soc-imx8m.c
index 8ccd41e219044..e66c73cc02871 100644
--- a/drivers/soc/imx/soc-imx8m.c
+++ b/drivers/soc/imx/soc-imx8m.c
@@ -51,22 +51,20 @@ static inline u32 imx8mq_soc_revision_from_atf(void) { return 0; };
 
 static int imx8mq_soc_revision(u32 *socrev, u64 *socuid)
 {
-	struct device_node *np;
+	struct device_node *np __free(device_node) =
+		of_find_compatible_node(NULL, NULL, "fsl,imx8mq-ocotp");
 	void __iomem *ocotp_base;
 	u32 magic;
 	u32 rev;
 	struct clk *clk;
 	int ret;
 
-	np = of_find_compatible_node(NULL, NULL, "fsl,imx8mq-ocotp");
 	if (!np)
 		return -EINVAL;
 
 	ocotp_base = of_iomap(np, 0);
-	if (!ocotp_base) {
-		ret = -EINVAL;
-		goto err_iomap;
-	}
+	if (!ocotp_base)
+		return -EINVAL;
 
 	clk = of_clk_get_by_name(np, NULL);
 	if (IS_ERR(clk)) {
@@ -96,35 +94,30 @@ static int imx8mq_soc_revision(u32 *socrev, u64 *socuid)
 	clk_disable_unprepare(clk);
 	clk_put(clk);
 	iounmap(ocotp_base);
-	of_node_put(np);
 
 	return 0;
 
 err_clk:
 	iounmap(ocotp_base);
-err_iomap:
-	of_node_put(np);
 	return ret;
 }
 
 static int imx8mm_soc_uid(u64 *socuid)
 {
+	struct device_node *np __free(device_node) =
+		of_find_compatible_node(NULL, NULL, "fsl,imx8mm-ocotp");
 	void __iomem *ocotp_base;
-	struct device_node *np;
 	struct clk *clk;
 	int ret = 0;
 	u32 offset = of_machine_is_compatible("fsl,imx8mp") ?
 		     IMX8MP_OCOTP_UID_OFFSET : 0;
 
-	np = of_find_compatible_node(NULL, NULL, "fsl,imx8mm-ocotp");
 	if (!np)
 		return -EINVAL;
 
 	ocotp_base = of_iomap(np, 0);
-	if (!ocotp_base) {
-		ret = -EINVAL;
-		goto err_iomap;
-	}
+	if (!ocotp_base)
+		return -EINVAL;
 
 	clk = of_clk_get_by_name(np, NULL);
 	if (IS_ERR(clk)) {
@@ -143,38 +136,27 @@ static int imx8mm_soc_uid(u64 *socuid)
 
 err_clk:
 	iounmap(ocotp_base);
-err_iomap:
-	of_node_put(np);
-
 	return ret;
 }
 
 static int imx8mm_soc_revision(u32 *socrev, u64 *socuid)
 {
-	struct device_node *np;
+	struct device_node *np __free(device_node) =
+		of_find_compatible_node(NULL, NULL, "fsl,imx8mm-anatop");
 	void __iomem *anatop_base;
-	int ret;
 
-	np = of_find_compatible_node(NULL, NULL, "fsl,imx8mm-anatop");
 	if (!np)
 		return -EINVAL;
 
 	anatop_base = of_iomap(np, 0);
-	if (!anatop_base) {
-		ret = -EINVAL;
-		goto err_iomap;
-	}
+	if (!anatop_base)
+		return -EINVAL;
 
 	*socrev = readl_relaxed(anatop_base + ANADIG_DIGPROG_IMX8MM);
 
 	iounmap(anatop_base);
-	of_node_put(np);
 
 	return imx8mm_soc_uid(socuid);
-
-err_iomap:
-	of_node_put(np);
-	return ret;
 }
 
 static const struct imx8_soc_data imx8mq_soc_data = {
@@ -205,22 +187,23 @@ static __maybe_unused const struct of_device_id imx8_soc_match[] = {
 	{ }
 };
 
-#define imx8_revision(soc_rev) \
-	soc_rev ? \
-	kasprintf(GFP_KERNEL, "%d.%d", (soc_rev >> 4) & 0xf,  soc_rev & 0xf) : \
+#define imx8_revision(dev, soc_rev) \
+	(soc_rev) ? \
+	devm_kasprintf((dev), GFP_KERNEL, "%d.%d", ((soc_rev) >> 4) & 0xf, (soc_rev) & 0xf) : \
 	"unknown"
 
 static int imx8m_soc_probe(struct platform_device *pdev)
 {
 	struct soc_device_attribute *soc_dev_attr;
 	const struct imx8_soc_data *data;
+	struct device *dev = &pdev->dev;
 	const struct of_device_id *id;
 	struct soc_device *soc_dev;
 	u32 soc_rev = 0;
 	u64 soc_uid = 0;
 	int ret;
 
-	soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
+	soc_dev_attr = devm_kzalloc(dev, sizeof(*soc_dev_attr), GFP_KERNEL);
 	if (!soc_dev_attr)
 		return -ENOMEM;
 
@@ -228,13 +211,11 @@ static int imx8m_soc_probe(struct platform_device *pdev)
 
 	ret = of_property_read_string(of_root, "model", &soc_dev_attr->machine);
 	if (ret)
-		goto free_soc;
+		return ret;
 
 	id = of_match_node(imx8_soc_match, of_root);
-	if (!id) {
-		ret = -ENODEV;
-		goto free_soc;
-	}
+	if (!id)
+		return -ENODEV;
 
 	data = id->data;
 	if (data) {
@@ -242,27 +223,21 @@ static int imx8m_soc_probe(struct platform_device *pdev)
 		if (data->soc_revision) {
 			ret = data->soc_revision(&soc_rev, &soc_uid);
 			if (ret)
-				goto free_soc;
+				return ret;
 		}
 	}
 
-	soc_dev_attr->revision = imx8_revision(soc_rev);
-	if (!soc_dev_attr->revision) {
-		ret = -ENOMEM;
-		goto free_soc;
-	}
+	soc_dev_attr->revision = imx8_revision(dev, soc_rev);
+	if (!soc_dev_attr->revision)
+		return -ENOMEM;
 
-	soc_dev_attr->serial_number = kasprintf(GFP_KERNEL, "%016llX", soc_uid);
-	if (!soc_dev_attr->serial_number) {
-		ret = -ENOMEM;
-		goto free_rev;
-	}
+	soc_dev_attr->serial_number = devm_kasprintf(dev, GFP_KERNEL, "%016llX", soc_uid);
+	if (!soc_dev_attr->serial_number)
+		return -ENOMEM;
 
 	soc_dev = soc_device_register(soc_dev_attr);
-	if (IS_ERR(soc_dev)) {
-		ret = PTR_ERR(soc_dev);
-		goto free_serial_number;
-	}
+	if (IS_ERR(soc_dev))
+		return PTR_ERR(soc_dev);
 
 	pr_info("SoC: %s revision %s\n", soc_dev_attr->soc_id,
 		soc_dev_attr->revision);
@@ -271,15 +246,6 @@ static int imx8m_soc_probe(struct platform_device *pdev)
 		platform_device_register_simple("imx-cpufreq-dt", -1, NULL, 0);
 
 	return 0;
-
-free_serial_number:
-	kfree(soc_dev_attr->serial_number);
-free_rev:
-	if (strcmp(soc_dev_attr->revision, "unknown"))
-		kfree(soc_dev_attr->revision);
-free_soc:
-	kfree(soc_dev_attr);
-	return ret;
 }
 
 static struct platform_driver imx8m_soc_driver = {
-- 
2.39.5

[PATCH 6.6 07/77] soc: imx8m: Unregister cpufreq and soc dev in cleanup path

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Peng Fan <peng.fan@nxp.com>

[ Upstream commit cf7139aac463880cbd5c5e999c118fbe91631411 ]

Unregister the cpufreq device and soc device when resource unwinding,
otherwise there will be warning when do removing test:
sysfs: cannot create duplicate filename '/devices/platform/imx-cpufreq-dt'
CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.13.0-rc1-next-20241204
Hardware name: NXP i.MX8MPlus EVK board (DT)

Fixes: 9cc832d37799 ("soc: imx8m: Probe the SoC driver as platform driver")
Cc: Marco Felsch <m.felsch@pengutronix.de>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Marco Felsch <m.felsch@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/soc/imx/soc-imx8m.c | 26 ++++++++++++++++++++++++--
 1 file changed, 24 insertions(+), 2 deletions(-)

diff --git a/drivers/soc/imx/soc-imx8m.c b/drivers/soc/imx/soc-imx8m.c
index e66c73cc02871..064188a0870b0 100644
--- a/drivers/soc/imx/soc-imx8m.c
+++ b/drivers/soc/imx/soc-imx8m.c
@@ -192,9 +192,20 @@ static __maybe_unused const struct of_device_id imx8_soc_match[] = {
 	devm_kasprintf((dev), GFP_KERNEL, "%d.%d", ((soc_rev) >> 4) & 0xf, (soc_rev) & 0xf) : \
 	"unknown"
 
+static void imx8m_unregister_soc(void *data)
+{
+	soc_device_unregister(data);
+}
+
+static void imx8m_unregister_cpufreq(void *data)
+{
+	platform_device_unregister(data);
+}
+
 static int imx8m_soc_probe(struct platform_device *pdev)
 {
 	struct soc_device_attribute *soc_dev_attr;
+	struct platform_device *cpufreq_dev;
 	const struct imx8_soc_data *data;
 	struct device *dev = &pdev->dev;
 	const struct of_device_id *id;
@@ -239,11 +250,22 @@ static int imx8m_soc_probe(struct platform_device *pdev)
 	if (IS_ERR(soc_dev))
 		return PTR_ERR(soc_dev);
 
+	ret = devm_add_action(dev, imx8m_unregister_soc, soc_dev);
+	if (ret)
+		return ret;
+
 	pr_info("SoC: %s revision %s\n", soc_dev_attr->soc_id,
 		soc_dev_attr->revision);
 
-	if (IS_ENABLED(CONFIG_ARM_IMX_CPUFREQ_DT))
-		platform_device_register_simple("imx-cpufreq-dt", -1, NULL, 0);
+	if (IS_ENABLED(CONFIG_ARM_IMX_CPUFREQ_DT)) {
+		cpufreq_dev = platform_device_register_simple("imx-cpufreq-dt", -1, NULL, 0);
+		if (IS_ERR(cpufreq_dev))
+			return dev_err_probe(dev, PTR_ERR(cpufreq_dev),
+					     "Failed to register imx-cpufreq-dev device\n");
+		ret = devm_add_action(dev, imx8m_unregister_cpufreq, cpufreq_dev);
+		if (ret)
+			return ret;
+	}
 
 	return 0;
 }
-- 
2.39.5

[PATCH 6.6 08/77] ARM: dts: bcm2711: PL011 UARTs are actually r1p5

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Phil Elwell <phil@raspberrypi.com>

[ Upstream commit 0de09025f161f67c07978c4742e221243d070d41 ]

The ARM PL011 UART instances in BCM2711 are r1p5 spec, which means they
have 32-entry FIFOs. The correct periphid value for this is 0x00341011.
Thanks to N Buchwitz for pointing this out.

Signed-off-by: Phil Elwell <phil@raspberrypi.com>
Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
Link: https://lore.kernel.org/r/20250223125614.3592-2-wahrenst@gmx.net
Fixes: 7dbe8c62ceeb ("ARM: dts: Add minimal Raspberry Pi 4 support")
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm/boot/dts/broadcom/bcm2711.dtsi | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/arch/arm/boot/dts/broadcom/bcm2711.dtsi b/arch/arm/boot/dts/broadcom/bcm2711.dtsi
index 4a379a14966d8..676a12b543557 100644
--- a/arch/arm/boot/dts/broadcom/bcm2711.dtsi
+++ b/arch/arm/boot/dts/broadcom/bcm2711.dtsi
@@ -134,7 +134,7 @@ uart2: serial@7e201400 {
 			clocks = <&clocks BCM2835_CLOCK_UART>,
 				 <&clocks BCM2835_CLOCK_VPU>;
 			clock-names = "uartclk", "apb_pclk";
-			arm,primecell-periphid = <0x00241011>;
+			arm,primecell-periphid = <0x00341011>;
 			status = "disabled";
 		};
 
@@ -145,7 +145,7 @@ uart3: serial@7e201600 {
 			clocks = <&clocks BCM2835_CLOCK_UART>,
 				 <&clocks BCM2835_CLOCK_VPU>;
 			clock-names = "uartclk", "apb_pclk";
-			arm,primecell-periphid = <0x00241011>;
+			arm,primecell-periphid = <0x00341011>;
 			status = "disabled";
 		};
 
@@ -156,7 +156,7 @@ uart4: serial@7e201800 {
 			clocks = <&clocks BCM2835_CLOCK_UART>,
 				 <&clocks BCM2835_CLOCK_VPU>;
 			clock-names = "uartclk", "apb_pclk";
-			arm,primecell-periphid = <0x00241011>;
+			arm,primecell-periphid = <0x00341011>;
 			status = "disabled";
 		};
 
@@ -167,7 +167,7 @@ uart5: serial@7e201a00 {
 			clocks = <&clocks BCM2835_CLOCK_UART>,
 				 <&clocks BCM2835_CLOCK_VPU>;
 			clock-names = "uartclk", "apb_pclk";
-			arm,primecell-periphid = <0x00241011>;
+			arm,primecell-periphid = <0x00341011>;
 			status = "disabled";
 		};
 
@@ -1155,6 +1155,7 @@ &txp {
 };
 
 &uart0 {
+	arm,primecell-periphid = <0x00341011>;
 	interrupts = <GIC_SPI 121 IRQ_TYPE_LEVEL_HIGH>;
 };
 
-- 
2.39.5

[PATCH 6.6 09/77] arm64: dts: rockchip: Remove undocumented sdmmc property from lubancat-1

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Yao Zi <ziyao@disroot.org>

[ Upstream commit 43c854c65e47d2f3763345683b06257b4d12e4e3 ]

Property "supports-sd" isn't documented anywhere and is unnecessary for
mainline driver to function. It seems a property used by downstream
kernel was brought into mainline.

This should be reported by dtbs_check, but mmc-controller-common.yaml
defaults additionalProperties to true thus allows it. Remove the
property to clean the devicetree up and avoid possible confusion.

Fixes: 8d94da58de53 ("arm64: dts: rockchip: Add EmbedFire LubanCat 1")
Signed-off-by: Yao Zi <ziyao@disroot.org>
Link: https://lore.kernel.org/r/20250228163117.47318-2-ziyao@disroot.org
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm64/boot/dts/rockchip/rk3566-lubancat-1.dts | 1 -
 1 file changed, 1 deletion(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3566-lubancat-1.dts b/arch/arm64/boot/dts/rockchip/rk3566-lubancat-1.dts
index c1e611c040a2c..df68a59694fb2 100644
--- a/arch/arm64/boot/dts/rockchip/rk3566-lubancat-1.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3566-lubancat-1.dts
@@ -513,7 +513,6 @@ &sdhci {
 
 &sdmmc0 {
 	max-frequency = <150000000>;
-	supports-sd;
 	bus-width = <4>;
 	cap-mmc-highspeed;
 	cap-sd-highspeed;
-- 
2.39.5

[PATCH 6.6 10/77] RDMA/bnxt_re: Add missing paranthesis in map_qp_id_to_tbl_indx

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Kashyap Desai <kashyap.desai@broadcom.com>

[ Upstream commit 67ee8d496511ad8e1cb88f72944847e7b3e4e47c ]

The modulo operation returns wrong result without the
paranthesis and that resulted in wrong QP table indexing.

Fixes: 84cf229f4001 ("RDMA/bnxt_re: Fix the qp table indexing")
Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Link: https://patch.msgid.link/1741021178-2569-3-git-send-email-selvin.xavier@broadcom.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/infiniband/hw/bnxt_re/qplib_rcfw.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/bnxt_re/qplib_rcfw.h b/drivers/infiniband/hw/bnxt_re/qplib_rcfw.h
index 07779aeb75759..a4deb45ec849f 100644
--- a/drivers/infiniband/hw/bnxt_re/qplib_rcfw.h
+++ b/drivers/infiniband/hw/bnxt_re/qplib_rcfw.h
@@ -283,9 +283,10 @@ int bnxt_qplib_deinit_rcfw(struct bnxt_qplib_rcfw *rcfw);
 int bnxt_qplib_init_rcfw(struct bnxt_qplib_rcfw *rcfw,
 			 struct bnxt_qplib_ctx *ctx, int is_virtfn);
 void bnxt_qplib_mark_qp_error(void *qp_handle);
+
 static inline u32 map_qp_id_to_tbl_indx(u32 qid, struct bnxt_qplib_rcfw *rcfw)
 {
 	/* Last index of the qp_tbl is for QP1 ie. qp_tbl_size - 1*/
-	return (qid == 1) ? rcfw->qp_tbl_size - 1 : qid % rcfw->qp_tbl_size - 2;
+	return (qid == 1) ? rcfw->qp_tbl_size - 1 : (qid % (rcfw->qp_tbl_size - 2));
 }
 #endif /* __BNXT_QPLIB_RCFW_H__ */
-- 
2.39.5

[PATCH 6.6 11/77] RDMA/mlx5: Handle errors returned from mlx5r_ib_rate()

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Qasim Ijaz <qasdev00@gmail.com>

[ Upstream commit 556f93b90c1872ad85e216e613c0b33803e621cb ]

In function create_ib_ah() the following line attempts
to left shift the return value of mlx5r_ib_rate() by 4
and store it in the stat_rate_sl member of av:

However the code overlooks the fact that mlx5r_ib_rate()
may return -EINVAL if the rate passed to it is less than
IB_RATE_2_5_GBPS or greater than IB_RATE_800_GBPS.

Because of this, the code may invoke undefined behaviour when
shifting a signed negative value when doing "-EINVAL << 4".

To fix this check for errors before assigning stat_rate_sl and
propagate any error value to the callers.

Fixes: c534ffda781f ("RDMA/mlx5: Fix AH static rate parsing")
Signed-off-by: Qasim Ijaz <qasdev00@gmail.com>
Link: https://patch.msgid.link/20250304140246.205919-1-qasdev00@gmail.com
Reviewed-by: Patrisious Haddad <phaddad@nvidia.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/infiniband/hw/mlx5/ah.c | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/drivers/infiniband/hw/mlx5/ah.c b/drivers/infiniband/hw/mlx5/ah.c
index 99036afb3aef0..531a57f9ee7e8 100644
--- a/drivers/infiniband/hw/mlx5/ah.c
+++ b/drivers/infiniband/hw/mlx5/ah.c
@@ -50,11 +50,12 @@ static __be16 mlx5_ah_get_udp_sport(const struct mlx5_ib_dev *dev,
 	return sport;
 }
 
-static void create_ib_ah(struct mlx5_ib_dev *dev, struct mlx5_ib_ah *ah,
+static int create_ib_ah(struct mlx5_ib_dev *dev, struct mlx5_ib_ah *ah,
 			 struct rdma_ah_init_attr *init_attr)
 {
 	struct rdma_ah_attr *ah_attr = init_attr->ah_attr;
 	enum ib_gid_type gid_type;
+	int rate_val;
 
 	if (rdma_ah_get_ah_flags(ah_attr) & IB_AH_GRH) {
 		const struct ib_global_route *grh = rdma_ah_read_grh(ah_attr);
@@ -67,8 +68,10 @@ static void create_ib_ah(struct mlx5_ib_dev *dev, struct mlx5_ib_ah *ah,
 		ah->av.tclass = grh->traffic_class;
 	}
 
-	ah->av.stat_rate_sl =
-		(mlx5r_ib_rate(dev, rdma_ah_get_static_rate(ah_attr)) << 4);
+	rate_val = mlx5r_ib_rate(dev, rdma_ah_get_static_rate(ah_attr));
+	if (rate_val < 0)
+		return rate_val;
+	ah->av.stat_rate_sl = rate_val << 4;
 
 	if (ah_attr->type == RDMA_AH_ATTR_TYPE_ROCE) {
 		if (init_attr->xmit_slave)
@@ -89,6 +92,8 @@ static void create_ib_ah(struct mlx5_ib_dev *dev, struct mlx5_ib_ah *ah,
 		ah->av.fl_mlid = rdma_ah_get_path_bits(ah_attr) & 0x7f;
 		ah->av.stat_rate_sl |= (rdma_ah_get_sl(ah_attr) & 0xf);
 	}
+
+	return 0;
 }
 
 int mlx5_ib_create_ah(struct ib_ah *ibah, struct rdma_ah_init_attr *init_attr,
@@ -121,8 +126,7 @@ int mlx5_ib_create_ah(struct ib_ah *ibah, struct rdma_ah_init_attr *init_attr,
 			return err;
 	}
 
-	create_ib_ah(dev, ah, init_attr);
-	return 0;
+	return create_ib_ah(dev, ah, init_attr);
 }
 
 int mlx5_ib_query_ah(struct ib_ah *ibah, struct rdma_ah_attr *ah_attr)
-- 
2.39.5

[PATCH 6.6 12/77] ARM: OMAP1: select CONFIG_GENERIC_IRQ_CHIP

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Arnd Bergmann <arnd@arndb.de>

[ Upstream commit 98f3ab18a0a55aa1ff2cd6b74bd0c02c8f76f17e ]

When GENERIC_IRQ_CHIP is disabled, OMAP1 kernels fail to link:

arm-linux-gnueabi-ld: arch/arm/mach-omap1/irq.o: in function `omap1_init_irq':
irq.c:(.init.text+0x1e8): undefined reference to `irq_alloc_generic_chip'
arm-linux-gnueabi-ld: irq.c:(.init.text+0x228): undefined reference to `irq_setup_generic_chip'
arm-linux-gnueabi-ld: irq.c:(.init.text+0x2a8): undefined reference to `irq_gc_set_wake'
arm-linux-gnueabi-ld: irq.c:(.init.text+0x2b0): undefined reference to `irq_gc_mask_set_bit'
arm-linux-gnueabi-ld: irq.c:(.init.text+0x2b4): undefined reference to `irq_gc_mask_clr_bit'

This has apparently been the case for many years, but I never caught it
in randconfig builds until now, as there are dozens of other drivers
that also 'select GENERIC_IRQ_CHIP' and statistically there is almost
always one of them enabled.

Fixes: 55b447744389 ("ARM: OMAP1: Switch to use generic irqchip in preparation for sparse IRQ")
Link: https://lore.kernel.org/r/20250205121151.289535-1-arnd@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm/mach-omap1/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/mach-omap1/Kconfig b/arch/arm/mach-omap1/Kconfig
index cbf703f0d850f..c5bd2535e0f4c 100644
--- a/arch/arm/mach-omap1/Kconfig
+++ b/arch/arm/mach-omap1/Kconfig
@@ -9,6 +9,7 @@ menuconfig ARCH_OMAP1
 	select ARCH_OMAP
 	select CLKSRC_MMIO
 	select FORCE_PCI if PCCARD
+	select GENERIC_IRQ_CHIP
 	select GPIOLIB
 	help
 	  Support for older TI OMAP1 (omap7xx, omap15xx or omap16xx)
-- 
2.39.5

[PATCH 6.6 13/77] ARM: dts: bcm2711: Dont mark timer regs unconfigured

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Phil Elwell <phil@raspberrypi.com>

[ Upstream commit c24f272ae751a9f54f8816430e7f2d56031892cc ]

During upstream process of Raspberry Pi 4 back in 2019 the ARMv7 stubs
didn't configured the ARM architectural timer. This firmware issue has
been fixed in 2020, which gave users enough time to update their system.

So drop this property to allow the use of the vDSO version of
clock_gettime.

Link: https://github.com/raspberrypi/tools/pull/113
Fixes: 7dbe8c62ceeb ("ARM: dts: Add minimal Raspberry Pi 4 support")
Signed-off-by: Phil Elwell <phil@raspberrypi.com>
Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20250222094113.48198-1-wahrenst@gmx.net
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm/boot/dts/broadcom/bcm2711.dtsi | 2 --
 1 file changed, 2 deletions(-)

diff --git a/arch/arm/boot/dts/broadcom/bcm2711.dtsi b/arch/arm/boot/dts/broadcom/bcm2711.dtsi
index 676a12b543557..8a0600e659ee1 100644
--- a/arch/arm/boot/dts/broadcom/bcm2711.dtsi
+++ b/arch/arm/boot/dts/broadcom/bcm2711.dtsi
@@ -451,8 +451,6 @@ IRQ_TYPE_LEVEL_LOW)>,
 					  IRQ_TYPE_LEVEL_LOW)>,
 			     <GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(4) |
 					  IRQ_TYPE_LEVEL_LOW)>;
-		/* This only applies to the ARMv7 stub */
-		arm,cpu-registers-not-fw-configured;
 	};
 
 	cpus: cpus {
-- 
2.39.5

[PATCH 6.6 14/77] RDMA/bnxt_re: Avoid clearing VLAN_ID mask in modify qp path

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Saravanan Vajravel <saravanan.vajravel@broadcom.com>

[ Upstream commit 81c0db302a674f8004ed805393d17fd76f552e83 ]

Driver is always clearing the mask that sets the VLAN ID/Service Level
in the adapter. Recent change for supporting multiple traffic class
exposed this issue.

Allow setting SL and VLAN_ID while QP is moved from INIT to RTR state.

Fixes: 1ac5a4047975 ("RDMA/bnxt_re: Add bnxt_re RoCE driver")
Fixes: c64b16a37b6d ("RDMA/bnxt_re: Support different traffic class")
Signed-off-by: Saravanan Vajravel <saravanan.vajravel@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Link: https://patch.msgid.link/1741670196-2919-1-git-send-email-selvin.xavier@broadcom.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/infiniband/hw/bnxt_re/qplib_fp.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/infiniband/hw/bnxt_re/qplib_fp.c b/drivers/infiniband/hw/bnxt_re/qplib_fp.c
index c4f10498c79d8..68ea4ed0b171b 100644
--- a/drivers/infiniband/hw/bnxt_re/qplib_fp.c
+++ b/drivers/infiniband/hw/bnxt_re/qplib_fp.c
@@ -1197,8 +1197,6 @@ static void __modify_flags_from_init_state(struct bnxt_qplib_qp *qp)
 			qp->path_mtu =
 				CMDQ_MODIFY_QP_PATH_MTU_MTU_2048;
 		}
-		qp->modify_flags &=
-			~CMDQ_MODIFY_QP_MODIFY_MASK_VLAN_ID;
 		/* Bono FW require the max_dest_rd_atomic to be >= 1 */
 		if (qp->max_dest_rd_atomic < 1)
 			qp->max_dest_rd_atomic = 1;
-- 
2.39.5

[PATCH 6.6 15/77] RDMA/hns: Fix soft lockup during bt pages loop

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Junxian Huang <huangjunxian6@hisilicon.com>

[ Upstream commit 25655580136de59ec89f09089dd28008ea440fc9 ]

Driver runs a for-loop when allocating bt pages and mapping them with
buffer pages. When a large buffer (e.g. MR over 100GB) is being allocated,
it may require a considerable loop count. This will lead to soft lockup:

        watchdog: BUG: soft lockup - CPU#27 stuck for 22s!
        ...
        Call trace:
         hem_list_alloc_mid_bt+0x124/0x394 [hns_roce_hw_v2]
         hns_roce_hem_list_request+0xf8/0x160 [hns_roce_hw_v2]
         hns_roce_mtr_create+0x2e4/0x360 [hns_roce_hw_v2]
         alloc_mr_pbl+0xd4/0x17c [hns_roce_hw_v2]
         hns_roce_reg_user_mr+0xf8/0x190 [hns_roce_hw_v2]
         ib_uverbs_reg_mr+0x118/0x290

        watchdog: BUG: soft lockup - CPU#35 stuck for 23s!
        ...
        Call trace:
         hns_roce_hem_list_find_mtt+0x7c/0xb0 [hns_roce_hw_v2]
         mtr_map_bufs+0xc4/0x204 [hns_roce_hw_v2]
         hns_roce_mtr_create+0x31c/0x3c4 [hns_roce_hw_v2]
         alloc_mr_pbl+0xb0/0x160 [hns_roce_hw_v2]
         hns_roce_reg_user_mr+0x108/0x1c0 [hns_roce_hw_v2]
         ib_uverbs_reg_mr+0x120/0x2bc

Add a cond_resched() to fix soft lockup during these loops. In order not
to affect the allocation performance of normal-size buffer, set the loop
count of a 100GB MR as the threshold to call cond_resched().

Fixes: 38389eaa4db1 ("RDMA/hns: Add mtr support for mixed multihop addressing")
Signed-off-by: Junxian Huang <huangjunxian6@hisilicon.com>
Link: https://patch.msgid.link/20250311084857.3803665-3-huangjunxian6@hisilicon.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/infiniband/hw/hns/hns_roce_hem.c | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/hns/hns_roce_hem.c b/drivers/infiniband/hw/hns/hns_roce_hem.c
index 51ab6041ca91b..f13016dc8016a 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hem.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hem.c
@@ -1416,6 +1416,11 @@ static int hem_list_alloc_root_bt(struct hns_roce_dev *hr_dev,
 	return ret;
 }
 
+/* This is the bottom bt pages number of a 100G MR on 4K OS, assuming
+ * the bt page size is not expanded by cal_best_bt_pg_sz()
+ */
+#define RESCHED_LOOP_CNT_THRESHOLD_ON_4K 12800
+
 /* construct the base address table and link them by address hop config */
 int hns_roce_hem_list_request(struct hns_roce_dev *hr_dev,
 			      struct hns_roce_hem_list *hem_list,
@@ -1424,6 +1429,7 @@ int hns_roce_hem_list_request(struct hns_roce_dev *hr_dev,
 {
 	const struct hns_roce_buf_region *r;
 	int ofs, end;
+	int loop;
 	int unit;
 	int ret;
 	int i;
@@ -1441,7 +1447,10 @@ int hns_roce_hem_list_request(struct hns_roce_dev *hr_dev,
 			continue;
 
 		end = r->offset + r->count;
-		for (ofs = r->offset; ofs < end; ofs += unit) {
+		for (ofs = r->offset, loop = 1; ofs < end; ofs += unit, loop++) {
+			if (!(loop % RESCHED_LOOP_CNT_THRESHOLD_ON_4K))
+				cond_resched();
+
 			ret = hem_list_alloc_mid_bt(hr_dev, r, unit, ofs,
 						    hem_list->mid_bt[i],
 						    &hem_list->btm_bt);
@@ -1498,9 +1507,14 @@ void *hns_roce_hem_list_find_mtt(struct hns_roce_dev *hr_dev,
 	struct list_head *head = &hem_list->btm_bt;
 	struct hns_roce_hem_item *hem, *temp_hem;
 	void *cpu_base = NULL;
+	int loop = 1;
 	int nr = 0;
 
 	list_for_each_entry_safe(hem, temp_hem, head, sibling) {
+		if (!(loop % RESCHED_LOOP_CNT_THRESHOLD_ON_4K))
+			cond_resched();
+		loop++;
+
 		if (hem_list_page_is_in_range(hem, offset)) {
 			nr = offset - hem->start;
 			cpu_base = hem->addr + nr * BA_BYTE_LEN;
-- 
2.39.5

[PATCH 6.6 16/77] RDMA/hns: Fix unmatched condition in error path of alloc_user_qp_db()

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Junxian Huang <huangjunxian6@hisilicon.com>

[ Upstream commit b9f59a24ba35a7d955a9f8e148dd9f85b7b40a01 ]

Currently the condition of unmapping sdb in error path is not exactly
the same as the condition of mapping in alloc_user_qp_db(). This may
cause a problem of unmapping an unmapped db in some case, such as
when the QP is XRC TGT. Unified the two conditions.

Fixes: 90ae0b57e4a5 ("RDMA/hns: Combine enable flags of qp")
Signed-off-by: Junxian Huang <huangjunxian6@hisilicon.com>
Link: https://patch.msgid.link/20250311084857.3803665-4-huangjunxian6@hisilicon.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/infiniband/hw/hns/hns_roce_qp.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/infiniband/hw/hns/hns_roce_qp.c b/drivers/infiniband/hw/hns/hns_roce_qp.c
index 97d79c8d5cd06..0b054b708d515 100644
--- a/drivers/infiniband/hw/hns/hns_roce_qp.c
+++ b/drivers/infiniband/hw/hns/hns_roce_qp.c
@@ -860,12 +860,14 @@ static int alloc_user_qp_db(struct hns_roce_dev *hr_dev,
 			    struct hns_roce_ib_create_qp *ucmd,
 			    struct hns_roce_ib_create_qp_resp *resp)
 {
+	bool has_sdb = user_qp_has_sdb(hr_dev, init_attr, udata, resp, ucmd);
 	struct hns_roce_ucontext *uctx = rdma_udata_to_drv_context(udata,
 		struct hns_roce_ucontext, ibucontext);
+	bool has_rdb = user_qp_has_rdb(hr_dev, init_attr, udata, resp);
 	struct ib_device *ibdev = &hr_dev->ib_dev;
 	int ret;
 
-	if (user_qp_has_sdb(hr_dev, init_attr, udata, resp, ucmd)) {
+	if (has_sdb) {
 		ret = hns_roce_db_map_user(uctx, ucmd->sdb_addr, &hr_qp->sdb);
 		if (ret) {
 			ibdev_err(ibdev,
@@ -876,7 +878,7 @@ static int alloc_user_qp_db(struct hns_roce_dev *hr_dev,
 		hr_qp->en_flags |= HNS_ROCE_QP_CAP_SQ_RECORD_DB;
 	}
 
-	if (user_qp_has_rdb(hr_dev, init_attr, udata, resp)) {
+	if (has_rdb) {
 		ret = hns_roce_db_map_user(uctx, ucmd->db_addr, &hr_qp->rdb);
 		if (ret) {
 			ibdev_err(ibdev,
@@ -890,7 +892,7 @@ static int alloc_user_qp_db(struct hns_roce_dev *hr_dev,
 	return 0;
 
 err_sdb:
-	if (hr_qp->en_flags & HNS_ROCE_QP_CAP_SQ_RECORD_DB)
+	if (has_sdb)
 		hns_roce_db_unmap_user(uctx, &hr_qp->sdb);
 err_out:
 	return ret;
-- 
2.39.5

[PATCH 6.6 17/77] RDMA/hns: Fix a missing rollback in error path of hns_roce_create_qp_common()

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Junxian Huang <huangjunxian6@hisilicon.com>

[ Upstream commit 444907dd45cbe62fd69398805b6e2c626fab5b3a ]

When ib_copy_to_udata() fails in hns_roce_create_qp_common(),
hns_roce_qp_remove() should be called in the error path to
clean up resources in hns_roce_qp_store().

Fixes: 0f00571f9433 ("RDMA/hns: Use new SQ doorbell register for HIP09")
Signed-off-by: Junxian Huang <huangjunxian6@hisilicon.com>
Link: https://patch.msgid.link/20250311084857.3803665-6-huangjunxian6@hisilicon.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/infiniband/hw/hns/hns_roce_qp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/hns/hns_roce_qp.c b/drivers/infiniband/hw/hns/hns_roce_qp.c
index 0b054b708d515..0cad6fc7bf32c 100644
--- a/drivers/infiniband/hw/hns/hns_roce_qp.c
+++ b/drivers/infiniband/hw/hns/hns_roce_qp.c
@@ -1149,7 +1149,7 @@ static int hns_roce_create_qp_common(struct hns_roce_dev *hr_dev,
 				       min(udata->outlen, sizeof(resp)));
 		if (ret) {
 			ibdev_err(ibdev, "copy qp resp failed!\n");
-			goto err_store;
+			goto err_flow_ctrl;
 		}
 	}
 
-- 
2.39.5

[PATCH 6.6 18/77] RDMA/hns: Fix wrong value of max_sge_rd

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Junxian Huang <huangjunxian6@hisilicon.com>

[ Upstream commit 6b5e41a8b51fce520bb09bd651a29ef495e990de ]

There is no difference between the sge of READ and non-READ
operations in hns RoCE. Set max_sge_rd to the same value as
max_send_sge.

Fixes: 9a4435375cd1 ("IB/hns: Add driver files for hns RoCE driver")
Signed-off-by: Junxian Huang <huangjunxian6@hisilicon.com>
Link: https://patch.msgid.link/20250311084857.3803665-8-huangjunxian6@hisilicon.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/infiniband/hw/hns/hns_roce_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/hns/hns_roce_main.c b/drivers/infiniband/hw/hns/hns_roce_main.c
index c8c49110a3378..dcd763dbb636d 100644
--- a/drivers/infiniband/hw/hns/hns_roce_main.c
+++ b/drivers/infiniband/hw/hns/hns_roce_main.c
@@ -182,7 +182,7 @@ static int hns_roce_query_device(struct ib_device *ib_dev,
 				  IB_DEVICE_RC_RNR_NAK_GEN;
 	props->max_send_sge = hr_dev->caps.max_sq_sg;
 	props->max_recv_sge = hr_dev->caps.max_rq_sg;
-	props->max_sge_rd = 1;
+	props->max_sge_rd = hr_dev->caps.max_sq_sg;
 	props->max_cq = hr_dev->caps.num_cqs;
 	props->max_cqe = hr_dev->caps.max_cqes;
 	props->max_mr = hr_dev->caps.num_mtpts;
-- 
2.39.5

[PATCH 6.6 19/77] Bluetooth: Fix error code in chan_alloc_skb_cb()

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Dan Carpenter <dan.carpenter@linaro.org>

[ Upstream commit 72d061ee630d0dbb45c2920d8d19b3861c413e54 ]

The chan_alloc_skb_cb() function is supposed to return error pointers on
error.  Returning NULL will lead to a NULL dereference.

Fixes: 6b8d4a6a0314 ("Bluetooth: 6LoWPAN: Use connected oriented channel instead of fixed one")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/bluetooth/6lowpan.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/net/bluetooth/6lowpan.c b/net/bluetooth/6lowpan.c
index 3bcc15c9415fc..13b752c169bed 100644
--- a/net/bluetooth/6lowpan.c
+++ b/net/bluetooth/6lowpan.c
@@ -825,11 +825,16 @@ static struct sk_buff *chan_alloc_skb_cb(struct l2cap_chan *chan,
 					 unsigned long hdr_len,
 					 unsigned long len, int nb)
 {
+	struct sk_buff *skb;
+
 	/* Note that we must allocate using GFP_ATOMIC here as
 	 * this function is called originally from netdev hard xmit
 	 * function in atomic context.
 	 */
-	return bt_skb_alloc(hdr_len + len, GFP_ATOMIC);
+	skb = bt_skb_alloc(hdr_len + len, GFP_ATOMIC);
+	if (!skb)
+		return ERR_PTR(-ENOMEM);
+	return skb;
 }
 
 static void chan_suspend_cb(struct l2cap_chan *chan)
-- 
2.39.5

[PATCH 6.6 20/77] Bluetooth: hci_event: Fix connection regression between LE and non-LE adapters

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Arkadiusz Bokowy <arkadiusz.bokowy@gmail.com>

[ Upstream commit f6685a96c8c8a07e260e39bac86d4163cfb38a4d ]

Due to a typo during defining HCI errors it is not possible to connect
LE-capable device with BR/EDR only adapter. The connection is terminated
by the LE adapter because the invalid LL params error code is treated
as unsupported remote feature.

Fixes: 79c0868ad65a ("Bluetooth: hci_event: Use HCI error defines instead of magic values")
Signed-off-by: Arkadiusz Bokowy <arkadiusz.bokowy@gmail.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 include/net/bluetooth/hci.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index 77a3040a3f29d..e4a97b2d09984 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -668,7 +668,7 @@ enum {
 #define HCI_ERROR_REMOTE_POWER_OFF	0x15
 #define HCI_ERROR_LOCAL_HOST_TERM	0x16
 #define HCI_ERROR_PAIRING_NOT_ALLOWED	0x18
-#define HCI_ERROR_UNSUPPORTED_REMOTE_FEATURE	0x1e
+#define HCI_ERROR_UNSUPPORTED_REMOTE_FEATURE	0x1a
 #define HCI_ERROR_INVALID_LL_PARAMS	0x1e
 #define HCI_ERROR_UNSPECIFIED		0x1f
 #define HCI_ERROR_ADVERTISING_TIMEOUT	0x3c
-- 
2.39.5

[PATCH 6.6 21/77] accel/qaic: Fix possible data corruption in BOs > 2G

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jeffrey Hugo <quic_jhugo@quicinc.com>

[ Upstream commit 84a833d90635e4b846333e2df0ae72f9cbecac39 ]

When slicing a BO, we need to iterate through the BO's sgt to find the
right pieces to construct the slice. Some of the data types chosen for
this process are incorrectly too small, and can overflow. This can
result in the incorrect slice construction, which can lead to data
corruption in workload execution.

The device can only handle 32-bit sized transfers, and the scatterlist
struct only supports 32-bit buffer sizes, so our upper limit for an
individual transfer is an unsigned int. Using an int is incorrect due to
the reservation of the sign bit. Upgrade the length of a scatterlist
entry and the offsets into a scatterlist entry to unsigned int for a
correct representation.

While each transfer may be limited to 32-bits, the overall BO may exceed
that size. For counting the total length of the BO, we need a type that
can represent the largest allocation possible on the system. That is the
definition of size_t, so use it.

Fixes: ff13be830333 ("accel/qaic: Add datapath")
Signed-off-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Signed-off-by: Jeff Hugo <jeff.hugo@oss.qualcomm.com>
Reviewed-by: Lizhi Hou <lizhi.hou@amd.com>
Reviewed-by: Troy Hanson <quic_thanson@quicinc.com>
Reviewed-by: Youssef Samir <quic_yabdulra@quicinc.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250306171959.853466-1-jeff.hugo@oss.qualcomm.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/accel/qaic/qaic_data.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/accel/qaic/qaic_data.c b/drivers/accel/qaic/qaic_data.c
index d2f8c70a77a5b..e8e6eb85f5f13 100644
--- a/drivers/accel/qaic/qaic_data.c
+++ b/drivers/accel/qaic/qaic_data.c
@@ -165,9 +165,10 @@ static void free_slice(struct kref *kref)
 static int clone_range_of_sgt_for_slice(struct qaic_device *qdev, struct sg_table **sgt_out,
 					struct sg_table *sgt_in, u64 size, u64 offset)
 {
-	int total_len, len, nents, offf = 0, offl = 0;
 	struct scatterlist *sg, *sgn, *sgf, *sgl;
+	unsigned int len, nents, offf, offl;
 	struct sg_table *sgt;
+	size_t total_len;
 	int ret, j;
 
 	/* find out number of relevant nents needed for this mem */
@@ -175,6 +176,8 @@ static int clone_range_of_sgt_for_slice(struct qaic_device *qdev, struct sg_tabl
 	sgf = NULL;
 	sgl = NULL;
 	nents = 0;
+	offf = 0;
+	offl = 0;
 
 	size = size ? size : PAGE_SIZE;
 	for_each_sgtable_dma_sg(sgt_in, sg, j) {
-- 
2.39.5

[PATCH 6.6 22/77] ARM: davinci: da850: fix selecting ARCH_DAVINCI_DA8XX

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: David Lechner <dlechner@baylibre.com>

[ Upstream commit 45d5fe1c53baaed1fb3043f45d1e15ebb4bbe86a ]

Chips in the DA850 family need to have ARCH_DAVINCI_DA8XX to be selected
in order to enable some peripheral drivers.

This was accidentally removed in a previous commit.

Fixes: dec85a95167a ("ARM: davinci: clean up platform support")
Signed-off-by: David Lechner <dlechner@baylibre.com>
Acked-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm/mach-davinci/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/mach-davinci/Kconfig b/arch/arm/mach-davinci/Kconfig
index 2a8a9fe46586d..3fa15f3422409 100644
--- a/arch/arm/mach-davinci/Kconfig
+++ b/arch/arm/mach-davinci/Kconfig
@@ -27,6 +27,7 @@ config ARCH_DAVINCI_DA830
 
 config ARCH_DAVINCI_DA850
 	bool "DA850/OMAP-L138/AM18x based system"
+	select ARCH_DAVINCI_DA8XX
 	select DAVINCI_CP_INTC
 
 config ARCH_DAVINCI_DA8XX
-- 
2.39.5

[PATCH 6.6 23/77] ipv6: Fix memleak of nhc_pcpu_rth_output in fib_check_nh_v6_gw().

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Kuniyuki Iwashima <kuniyu@amazon.com>

[ Upstream commit 9740890ee20e01f99ff1dde84c63dcf089fabb98 ]

fib_check_nh_v6_gw() expects that fib6_nh_init() cleans up everything
when it fails.

Commit 7dd73168e273 ("ipv6: Always allocate pcpu memory in a fib6_nh")
moved fib_nh_common_init() before alloc_percpu_gfp() within fib6_nh_init()
but forgot to add cleanup for fib6_nh->nh_common.nhc_pcpu_rth_output in
case it fails to allocate fib6_nh->rt6i_pcpu, resulting in memleak.

Let's call fib_nh_common_release() and clear nhc_pcpu_rth_output in the
error path.

Note that we can remove the fib6_nh_release() call in nh_create_ipv6()
later in net-next.git.

Fixes: 7dd73168e273 ("ipv6: Always allocate pcpu memory in a fib6_nh")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://patch.msgid.link/20250312010333.56001-1-kuniyu@amazon.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/ipv6/route.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 5715d54f3d0be..f13b2eb904633 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -3636,7 +3636,8 @@ int fib6_nh_init(struct net *net, struct fib6_nh *fib6_nh,
 		in6_dev_put(idev);
 
 	if (err) {
-		lwtstate_put(fib6_nh->fib_nh_lws);
+		fib_nh_common_release(&fib6_nh->nh_common);
+		fib6_nh->nh_common.nhc_pcpu_rth_output = NULL;
 		fib6_nh->fib_nh_lws = NULL;
 		netdev_put(dev, dev_tracker);
 	}
-- 
2.39.5

[PATCH 6.6 24/77] ipv6: Set errno after ip_fib_metrics_init() in ip6_route_info_create().

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Kuniyuki Iwashima <kuniyu@amazon.com>

[ Upstream commit 9a81fc3480bf5dbe2bf80e278c440770f6ba2692 ]

While creating a new IPv6, we could get a weird -ENOMEM when
RTA_NH_ID is set and either of the conditions below is true:

  1) CONFIG_IPV6_SUBTREES is enabled and rtm_src_len is specified
  2) nexthop_get() fails

e.g.)

  # strace ip -6 route add fe80::dead:beef:dead:beef nhid 1 from ::
  recvmsg(3, {msg_iov=[{iov_base=[...[
    {error=-ENOMEM, msg=[... [...]]},
    [{nla_len=49, nla_type=NLMSGERR_ATTR_MSG}, "Nexthops can not be used with so"...]
  ]], iov_len=32768}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 148

Let's set err explicitly after ip_fib_metrics_init() in
ip6_route_info_create().

Fixes: f88d8ea67fbd ("ipv6: Plumb support for nexthop object in a fib6_info")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://patch.msgid.link/20250312013854.61125-1-kuniyu@amazon.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/ipv6/route.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index f13b2eb904633..3ab5ea55ff8c3 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -3797,10 +3797,12 @@ static struct fib6_info *ip6_route_info_create(struct fib6_config *cfg,
 	if (nh) {
 		if (rt->fib6_src.plen) {
 			NL_SET_ERR_MSG(extack, "Nexthops can not be used with source routing");
+			err = -EINVAL;
 			goto out_free;
 		}
 		if (!nexthop_get(nh)) {
 			NL_SET_ERR_MSG(extack, "Nexthop has been deleted");
+			err = -ENOENT;
 			goto out_free;
 		}
 		rt->nh = nh;
-- 
2.39.5

[PATCH 6.6 25/77] net: atm: fix use after free in lec_send()

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Dan Carpenter <dan.carpenter@linaro.org>

[ Upstream commit f3009d0d6ab78053117f8857b921a8237f4d17b3 ]

The ->send() operation frees skb so save the length before calling
->send() to avoid a use after free.

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/c751531d-4af4-42fe-affe-6104b34b791d@stanley.mountain
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/atm/lec.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/atm/lec.c b/net/atm/lec.c
index 6257bf12e5a00..ac3cfc1ae5102 100644
--- a/net/atm/lec.c
+++ b/net/atm/lec.c
@@ -181,6 +181,7 @@ static void
 lec_send(struct atm_vcc *vcc, struct sk_buff *skb)
 {
 	struct net_device *dev = skb->dev;
+	unsigned int len = skb->len;
 
 	ATM_SKB(skb)->vcc = vcc;
 	atm_account_tx(vcc, skb);
@@ -191,7 +192,7 @@ lec_send(struct atm_vcc *vcc, struct sk_buff *skb)
 	}
 
 	dev->stats.tx_packets++;
-	dev->stats.tx_bytes += skb->len;
+	dev->stats.tx_bytes += len;
 }
 
 static void lec_tx_timeout(struct net_device *dev, unsigned int txqueue)
-- 
2.39.5

[PATCH 6.6 26/77] net: lwtunnel: fix recursion loops

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Justin Iurman <justin.iurman@uliege.be>

[ Upstream commit 986ffb3a57c5650fb8bf6d59a8f0f07046abfeb6 ]

This patch acts as a parachute, catch all solution, by detecting
recursion loops in lwtunnel users and taking care of them (e.g., a loop
between routes, a loop within the same route, etc). In general, such
loops are the consequence of pathological configurations. Each lwtunnel
user is still free to catch such loops early and do whatever they want
with them. It will be the case in a separate patch for, e.g., seg6 and
seg6_local, in order to provide drop reasons and update statistics.
Another example of a lwtunnel user taking care of loops is ioam6, which
has valid use cases that include loops (e.g., inline mode), and which is
addressed by the next patch in this series. Overall, this patch acts as
a last resort to catch loops and drop packets, since we don't want to
leak something unintentionally because of a pathological configuration
in lwtunnels.

The solution in this patch reuses dev_xmit_recursion(),
dev_xmit_recursion_inc(), and dev_xmit_recursion_dec(), which seems fine
considering the context.

Closes: https://lore.kernel.org/netdev/2bc9e2079e864a9290561894d2a602d6@akamai.com/
Closes: https://lore.kernel.org/netdev/Z7NKYMY7fJT5cYWu@shredder/
Fixes: ffce41962ef6 ("lwtunnel: support dst output redirect function")
Fixes: 2536862311d2 ("lwt: Add support to redirect dst.input")
Fixes: 14972cbd34ff ("net: lwtunnel: Handle fragmentation")
Signed-off-by: Justin Iurman <justin.iurman@uliege.be>
Link: https://patch.msgid.link/20250314120048.12569-2-justin.iurman@uliege.be
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/core/lwtunnel.c | 65 ++++++++++++++++++++++++++++++++++++---------
 1 file changed, 53 insertions(+), 12 deletions(-)

diff --git a/net/core/lwtunnel.c b/net/core/lwtunnel.c
index 711cd3b4347a7..4417a18b3e951 100644
--- a/net/core/lwtunnel.c
+++ b/net/core/lwtunnel.c
@@ -23,6 +23,8 @@
 #include <net/ip6_fib.h>
 #include <net/rtnh.h>
 
+#include "dev.h"
+
 DEFINE_STATIC_KEY_FALSE(nf_hooks_lwtunnel_enabled);
 EXPORT_SYMBOL_GPL(nf_hooks_lwtunnel_enabled);
 
@@ -325,13 +327,23 @@ EXPORT_SYMBOL_GPL(lwtunnel_cmp_encap);
 
 int lwtunnel_output(struct net *net, struct sock *sk, struct sk_buff *skb)
 {
-	struct dst_entry *dst = skb_dst(skb);
 	const struct lwtunnel_encap_ops *ops;
 	struct lwtunnel_state *lwtstate;
-	int ret = -EINVAL;
+	struct dst_entry *dst;
+	int ret;
+
+	if (dev_xmit_recursion()) {
+		net_crit_ratelimited("%s(): recursion limit reached on datapath\n",
+				     __func__);
+		ret = -ENETDOWN;
+		goto drop;
+	}
 
-	if (!dst)
+	dst = skb_dst(skb);
+	if (!dst) {
+		ret = -EINVAL;
 		goto drop;
+	}
 	lwtstate = dst->lwtstate;
 
 	if (lwtstate->type == LWTUNNEL_ENCAP_NONE ||
@@ -341,8 +353,11 @@ int lwtunnel_output(struct net *net, struct sock *sk, struct sk_buff *skb)
 	ret = -EOPNOTSUPP;
 	rcu_read_lock();
 	ops = rcu_dereference(lwtun_encaps[lwtstate->type]);
-	if (likely(ops && ops->output))
+	if (likely(ops && ops->output)) {
+		dev_xmit_recursion_inc();
 		ret = ops->output(net, sk, skb);
+		dev_xmit_recursion_dec();
+	}
 	rcu_read_unlock();
 
 	if (ret == -EOPNOTSUPP)
@@ -359,13 +374,23 @@ EXPORT_SYMBOL_GPL(lwtunnel_output);
 
 int lwtunnel_xmit(struct sk_buff *skb)
 {
-	struct dst_entry *dst = skb_dst(skb);
 	const struct lwtunnel_encap_ops *ops;
 	struct lwtunnel_state *lwtstate;
-	int ret = -EINVAL;
+	struct dst_entry *dst;
+	int ret;
+
+	if (dev_xmit_recursion()) {
+		net_crit_ratelimited("%s(): recursion limit reached on datapath\n",
+				     __func__);
+		ret = -ENETDOWN;
+		goto drop;
+	}
 
-	if (!dst)
+	dst = skb_dst(skb);
+	if (!dst) {
+		ret = -EINVAL;
 		goto drop;
+	}
 
 	lwtstate = dst->lwtstate;
 
@@ -376,8 +401,11 @@ int lwtunnel_xmit(struct sk_buff *skb)
 	ret = -EOPNOTSUPP;
 	rcu_read_lock();
 	ops = rcu_dereference(lwtun_encaps[lwtstate->type]);
-	if (likely(ops && ops->xmit))
+	if (likely(ops && ops->xmit)) {
+		dev_xmit_recursion_inc();
 		ret = ops->xmit(skb);
+		dev_xmit_recursion_dec();
+	}
 	rcu_read_unlock();
 
 	if (ret == -EOPNOTSUPP)
@@ -394,13 +422,23 @@ EXPORT_SYMBOL_GPL(lwtunnel_xmit);
 
 int lwtunnel_input(struct sk_buff *skb)
 {
-	struct dst_entry *dst = skb_dst(skb);
 	const struct lwtunnel_encap_ops *ops;
 	struct lwtunnel_state *lwtstate;
-	int ret = -EINVAL;
+	struct dst_entry *dst;
+	int ret;
 
-	if (!dst)
+	if (dev_xmit_recursion()) {
+		net_crit_ratelimited("%s(): recursion limit reached on datapath\n",
+				     __func__);
+		ret = -ENETDOWN;
 		goto drop;
+	}
+
+	dst = skb_dst(skb);
+	if (!dst) {
+		ret = -EINVAL;
+		goto drop;
+	}
 	lwtstate = dst->lwtstate;
 
 	if (lwtstate->type == LWTUNNEL_ENCAP_NONE ||
@@ -410,8 +448,11 @@ int lwtunnel_input(struct sk_buff *skb)
 	ret = -EOPNOTSUPP;
 	rcu_read_lock();
 	ops = rcu_dereference(lwtun_encaps[lwtstate->type]);
-	if (likely(ops && ops->input))
+	if (likely(ops && ops->input)) {
+		dev_xmit_recursion_inc();
 		ret = ops->input(skb);
+		dev_xmit_recursion_dec();
+	}
 	rcu_read_unlock();
 
 	if (ret == -EOPNOTSUPP)
-- 
2.39.5

[PATCH 6.6 27/77] net/neighbor: add missing policy for NDTPA_QUEUE_LENBYTES

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Lin Ma <linma@zju.edu.cn>

[ Upstream commit 90a7138619a0c55e2aefaad27b12ffc2ddbeed78 ]

Previous commit 8b5c171bb3dc ("neigh: new unresolved queue limits")
introduces new netlink attribute NDTPA_QUEUE_LENBYTES to represent
approximative value for deprecated QUEUE_LEN. However, it forgot to add
the associated nla_policy in nl_ntbl_parm_policy array. Fix it with one
simple NLA_U32 type policy.

Fixes: 8b5c171bb3dc ("neigh: new unresolved queue limits")
Signed-off-by: Lin Ma <linma@zju.edu.cn>
Link: https://patch.msgid.link/20250315165113.37600-1-linma@zju.edu.cn
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/core/neighbour.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index e44feb39d459a..1e2e60ffe7662 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -2293,6 +2293,7 @@ static const struct nla_policy nl_neightbl_policy[NDTA_MAX+1] = {
 static const struct nla_policy nl_ntbl_parm_policy[NDTPA_MAX+1] = {
 	[NDTPA_IFINDEX]			= { .type = NLA_U32 },
 	[NDTPA_QUEUE_LEN]		= { .type = NLA_U32 },
+	[NDTPA_QUEUE_LENBYTES]		= { .type = NLA_U32 },
 	[NDTPA_PROXY_QLEN]		= { .type = NLA_U32 },
 	[NDTPA_APP_PROBES]		= { .type = NLA_U32 },
 	[NDTPA_UCAST_PROBES]		= { .type = NLA_U32 },
-- 
2.39.5

[PATCH 6.6 28/77] Revert "gre: Fix IPv6 link-local address generation."

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Guillaume Nault <gnault@redhat.com>

[ Upstream commit fc486c2d060f67d672ddad81724f7c8a4d329570 ]

This reverts commit 183185a18ff96751db52a46ccf93fff3a1f42815.

This patch broke net/forwarding/ip6gre_custom_multipath_hash.sh in some
circumstances (https://lore.kernel.org/netdev/Z9RIyKZDNoka53EO@mini-arch/).
Let's revert it while the problem is being investigated.

Fixes: 183185a18ff9 ("gre: Fix IPv6 link-local address generation.")
Signed-off-by: Guillaume Nault <gnault@redhat.com>
Link: https://patch.msgid.link/8b1ce738eb15dd841aab9ef888640cab4f6ccfea.1742418408.git.gnault@redhat.com
Acked-by: Stanislav Fomichev <sdf@fomichev.me>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/ipv6/addrconf.c | 15 ++++++---------
 1 file changed, 6 insertions(+), 9 deletions(-)

diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index db07d3bbaf379..8360939acf85a 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -3189,13 +3189,16 @@ static void add_v4_addrs(struct inet6_dev *idev)
 	struct in6_addr addr;
 	struct net_device *dev;
 	struct net *net = dev_net(idev->dev);
-	int scope, plen;
+	int scope, plen, offset = 0;
 	u32 pflags = 0;
 
 	ASSERT_RTNL();
 
 	memset(&addr, 0, sizeof(struct in6_addr));
-	memcpy(&addr.s6_addr32[3], idev->dev->dev_addr, 4);
+	/* in case of IP6GRE the dev_addr is an IPv6 and therefore we use only the last 4 bytes */
+	if (idev->dev->addr_len == sizeof(struct in6_addr))
+		offset = sizeof(struct in6_addr) - 4;
+	memcpy(&addr.s6_addr32[3], idev->dev->dev_addr + offset, 4);
 
 	if (!(idev->dev->flags & IFF_POINTOPOINT) && idev->dev->type == ARPHRD_SIT) {
 		scope = IPV6_ADDR_COMPATv4;
@@ -3505,13 +3508,7 @@ static void addrconf_gre_config(struct net_device *dev)
 		return;
 	}
 
-	/* Generate the IPv6 link-local address using addrconf_addr_gen(),
-	 * unless we have an IPv4 GRE device not bound to an IP address and
-	 * which is in EUI64 mode (as __ipv6_isatap_ifid() would fail in this
-	 * case). Such devices fall back to add_v4_addrs() instead.
-	 */
-	if (!(dev->type == ARPHRD_IPGRE && *(__be32 *)dev->dev_addr == 0 &&
-	      idev->cnf.addr_gen_mode == IN6_ADDR_GEN_MODE_EUI64)) {
+	if (dev->type == ARPHRD_ETHER) {
 		addrconf_addr_gen(idev, true);
 		return;
 	}
-- 
2.39.5

[PATCH 6.6 29/77] i2c: omap: fix IRQ storms

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Andreas Kemnade <andreas@kemnade.info>

commit 285df995f90e3d61d97f327d34b9659d92313314 upstream.

On the GTA04A5 writing a reset command to the gyroscope causes IRQ
storms because NACK IRQs are enabled and therefore triggered but not
acked.

Sending a reset command to the gyroscope by
i2cset 1 0x69 0x14 0xb6
with an additional debug print in the ISR (not the thread) itself
causes

[ 363.353515] i2c i2c-1: ioctl, cmd=0x720, arg=0xbe801b00
[ 363.359039] omap_i2c 48072000.i2c: addr: 0x0069, len: 2, flags: 0x0, stop: 1
[ 363.366180] omap_i2c 48072000.i2c: IRQ LL (ISR = 0x1110)
[ 363.371673] omap_i2c 48072000.i2c: IRQ (ISR = 0x0010)
[ 363.376892] omap_i2c 48072000.i2c: IRQ LL (ISR = 0x0102)
[ 363.382263] omap_i2c 48072000.i2c: IRQ LL (ISR = 0x0102)
[ 363.387664] omap_i2c 48072000.i2c: IRQ LL (ISR = 0x0102)
repeating till infinity
[...]
(0x2 = NACK, 0x100 = Bus free, which is not enabled)
Apparently no other IRQ bit gets set, so this stalls.

Do not ignore enabled interrupts and make sure they are acked.
If the NACK IRQ is not needed, it should simply not enabled, but
according to the above log, caring about it is necessary unless
the Bus free IRQ is enabled and handled. The assumption that is
will always come with a ARDY IRQ, which was the idea behind
ignoring it, proves wrong.
It is true for simple reads from an unused address.

To still avoid the i2cdetect trouble which is the reason for
commit c770657bd261 ("i2c: omap: Fix standard mode false ACK readings"),
avoid doing much about NACK in omap_i2c_xfer_data() which is used
by both IRQ mode and polling mode, so also the false detection fix
is extended to polling usage and IRQ storms are avoided.

By changing this, the hardirq handler is not needed anymore to filter
stuff.

The mentioned gyro reset now just causes a -ETIMEDOUT instead of
hanging the system.

Fixes: c770657bd261 ("i2c: omap: Fix standard mode false ACK readings").
CC: stable@kernel.org
Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Aniket Limaye <a-limaye@ti.com>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20250228140420.379498-1-andreas@kemnade.info
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/i2c/busses/i2c-omap.c |   26 +++++++-------------------
 1 file changed, 7 insertions(+), 19 deletions(-)

--- a/drivers/i2c/busses/i2c-omap.c
+++ b/drivers/i2c/busses/i2c-omap.c
@@ -1049,23 +1049,6 @@ static int omap_i2c_transmit_data(struct
 	return 0;
 }
 
-static irqreturn_t
-omap_i2c_isr(int irq, void *dev_id)
-{
-	struct omap_i2c_dev *omap = dev_id;
-	irqreturn_t ret = IRQ_HANDLED;
-	u16 mask;
-	u16 stat;
-
-	stat = omap_i2c_read_reg(omap, OMAP_I2C_STAT_REG);
-	mask = omap_i2c_read_reg(omap, OMAP_I2C_IE_REG) & ~OMAP_I2C_STAT_NACK;
-
-	if (stat & mask)
-		ret = IRQ_WAKE_THREAD;
-
-	return ret;
-}
-
 static int omap_i2c_xfer_data(struct omap_i2c_dev *omap)
 {
 	u16 bits;
@@ -1096,8 +1079,13 @@ static int omap_i2c_xfer_data(struct oma
 		}
 
 		if (stat & OMAP_I2C_STAT_NACK) {
-			err |= OMAP_I2C_STAT_NACK;
+			omap->cmd_err |= OMAP_I2C_STAT_NACK;
 			omap_i2c_ack_stat(omap, OMAP_I2C_STAT_NACK);
+
+			if (!(stat & ~OMAP_I2C_STAT_NACK)) {
+				err = -EAGAIN;
+				break;
+			}
 		}
 
 		if (stat & OMAP_I2C_STAT_AL) {
@@ -1475,7 +1463,7 @@ omap_i2c_probe(struct platform_device *p
 				IRQF_NO_SUSPEND, pdev->name, omap);
 	else
 		r = devm_request_threaded_irq(&pdev->dev, omap->irq,
-				omap_i2c_isr, omap_i2c_isr_thread,
+				NULL, omap_i2c_isr_thread,
 				IRQF_NO_SUSPEND | IRQF_ONESHOT,
 				pdev->name, omap);
 

[PATCH 6.6 30/77] can: rcar_canfd: Fix page entries in the AFL list

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Biju Das <biju.das.jz@bp.renesas.com>

commit 1dba0a37644ed3022558165bbb5cb9bda540eaf7 upstream.

There are a total of 96 AFL pages and each page has 16 entries with
registers CFDGAFLIDr, CFDGAFLMr, CFDGAFLP0r, CFDGAFLP1r holding
the rule entries (r = 0..15).

Currently, RCANFD_GAFL* macros use a start variable to find AFL entries,
which is incorrect as the testing on RZ/G3E shows ch1 and ch4
gets a start value of 0 and the register contents are overwritten.

Fix this issue by using rule_entry corresponding to the channel
to find the page entries in the AFL list.

Fixes: dd3bd23eb438 ("can: rcar_canfd: Add Renesas R-Car CAN FD driver")
Cc: stable@vger.kernel.org
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20250307170330.173425-3-biju.das.jz@bp.renesas.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/can/rcar/rcar_canfd.c |   28 +++++++++++-----------------
 1 file changed, 11 insertions(+), 17 deletions(-)

--- a/drivers/net/can/rcar/rcar_canfd.c
+++ b/drivers/net/can/rcar/rcar_canfd.c
@@ -793,22 +793,14 @@ static void rcar_canfd_configure_control
 }
 
 static void rcar_canfd_configure_afl_rules(struct rcar_canfd_global *gpriv,
-					   u32 ch)
+					   u32 ch, u32 rule_entry)
 {
-	u32 cfg;
-	int offset, start, page, num_rules = RCANFD_CHANNEL_NUMRULES;
+	int offset, page, num_rules = RCANFD_CHANNEL_NUMRULES;
+	u32 rule_entry_index = rule_entry % 16;
 	u32 ridx = ch + RCANFD_RFFIFO_IDX;
 
-	if (ch == 0) {
-		start = 0; /* Channel 0 always starts from 0th rule */
-	} else {
-		/* Get number of Channel 0 rules and adjust */
-		cfg = rcar_canfd_read(gpriv->base, RCANFD_GAFLCFG(ch));
-		start = RCANFD_GAFLCFG_GETRNC(gpriv, 0, cfg);
-	}
-
 	/* Enable write access to entry */
-	page = RCANFD_GAFL_PAGENUM(start);
+	page = RCANFD_GAFL_PAGENUM(rule_entry);
 	rcar_canfd_set_bit(gpriv->base, RCANFD_GAFLECTR,
 			   (RCANFD_GAFLECTR_AFLPN(gpriv, page) |
 			    RCANFD_GAFLECTR_AFLDAE));
@@ -824,13 +816,13 @@ static void rcar_canfd_configure_afl_rul
 		offset = RCANFD_C_GAFL_OFFSET;
 
 	/* Accept all IDs */
-	rcar_canfd_write(gpriv->base, RCANFD_GAFLID(offset, start), 0);
+	rcar_canfd_write(gpriv->base, RCANFD_GAFLID(offset, rule_entry_index), 0);
 	/* IDE or RTR is not considered for matching */
-	rcar_canfd_write(gpriv->base, RCANFD_GAFLM(offset, start), 0);
+	rcar_canfd_write(gpriv->base, RCANFD_GAFLM(offset, rule_entry_index), 0);
 	/* Any data length accepted */
-	rcar_canfd_write(gpriv->base, RCANFD_GAFLP0(offset, start), 0);
+	rcar_canfd_write(gpriv->base, RCANFD_GAFLP0(offset, rule_entry_index), 0);
 	/* Place the msg in corresponding Rx FIFO entry */
-	rcar_canfd_set_bit(gpriv->base, RCANFD_GAFLP1(offset, start),
+	rcar_canfd_set_bit(gpriv->base, RCANFD_GAFLP1(offset, rule_entry_index),
 			   RCANFD_GAFLP1_GAFLFDP(ridx));
 
 	/* Disable write access to page */
@@ -1857,6 +1849,7 @@ static int rcar_canfd_probe(struct platf
 	unsigned long channels_mask = 0;
 	int err, ch_irq, g_irq;
 	int g_err_irq, g_recc_irq;
+	u32 rule_entry = 0;
 	bool fdmode = true;			/* CAN FD only mode - default */
 	char name[9] = "channelX";
 	int i;
@@ -2033,7 +2026,8 @@ static int rcar_canfd_probe(struct platf
 		rcar_canfd_configure_tx(gpriv, ch);
 
 		/* Configure receive rules */
-		rcar_canfd_configure_afl_rules(gpriv, ch);
+		rcar_canfd_configure_afl_rules(gpriv, ch, rule_entry);
+		rule_entry += RCANFD_CHANNEL_NUMRULES;
 	}
 
 	/* Configure common interrupts */

[PATCH 6.6 31/77] can: ucan: fix out of bound read in strscpy() source

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Vincent Mailhol <mailhol.vincent@wanadoo.fr>

commit 1d22a122ffb116c3cf78053e812b8b21f8852ee9 upstream.

Commit 7fdaf8966aae ("can: ucan: use strscpy() to instead of strncpy()")
unintentionally introduced a one byte out of bound read on strscpy()'s
source argument (which is kind of ironic knowing that strscpy() is meant
to be a more secure alternative :)).

Let's consider below buffers:

  dest[len + 1]; /* will be NUL terminated */
  src[len]; /* may not be NUL terminated */

When doing:

  strncpy(dest, src, len);
  dest[len] = '\0';

strncpy() will read up to len bytes from src.

On the other hand:

  strscpy(dest, src, len + 1);

will read up to len + 1 bytes from src, that is to say, an out of bound
read of one byte will occur on src if it is not NUL terminated. Note
that the src[len] byte is never copied, but strscpy() still needs to
read it to check whether a truncation occurred or not.

This exact pattern happened in ucan.

The root cause is that the source is not NUL terminated. Instead of
doing a copy in a local buffer, directly NUL terminate it as soon as
usb_control_msg() returns. With this, the local firmware_str[] variable
can be removed.

On top of this do a couple refactors:

  - ucan_ctl_payload->raw is only used for the firmware string, so
    rename it to ucan_ctl_payload->fw_str and change its type from u8 to
    char.

  - ucan_device_request_in() is only used to retrieve the firmware
    string, so rename it to ucan_get_fw_str() and refactor it to make it
    directly handle all the string termination logic.

Reported-by: syzbot+d7d8c418e8317899e88c@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/linux-can/67b323a4.050a0220.173698.002b.GAE@google.com/
Fixes: 7fdaf8966aae ("can: ucan: use strscpy() to instead of strncpy()")
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Link: https://patch.msgid.link/20250218143515.627682-2-mailhol.vincent@wanadoo.fr
Cc: stable@vger.kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/can/usb/ucan.c |   43 ++++++++++++++++++-------------------------
 1 file changed, 18 insertions(+), 25 deletions(-)

--- a/drivers/net/can/usb/ucan.c
+++ b/drivers/net/can/usb/ucan.c
@@ -186,7 +186,7 @@ union ucan_ctl_payload {
 	 */
 	struct ucan_ctl_cmd_get_protocol_version cmd_get_protocol_version;
 
-	u8 raw[128];
+	u8 fw_str[128];
 } __packed;
 
 enum {
@@ -424,18 +424,20 @@ static int ucan_ctrl_command_out(struct
 			       UCAN_USB_CTL_PIPE_TIMEOUT);
 }
 
-static int ucan_device_request_in(struct ucan_priv *up,
-				  u8 cmd, u16 subcmd, u16 datalen)
+static void ucan_get_fw_str(struct ucan_priv *up, char *fw_str, size_t size)
 {
-	return usb_control_msg(up->udev,
-			       usb_rcvctrlpipe(up->udev, 0),
-			       cmd,
-			       USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
-			       subcmd,
-			       0,
-			       up->ctl_msg_buffer,
-			       datalen,
-			       UCAN_USB_CTL_PIPE_TIMEOUT);
+	int ret;
+
+	ret = usb_control_msg(up->udev, usb_rcvctrlpipe(up->udev, 0),
+			      UCAN_DEVICE_GET_FW_STRING,
+			      USB_DIR_IN | USB_TYPE_VENDOR |
+			      USB_RECIP_DEVICE,
+			      0, 0, fw_str, size - 1,
+			      UCAN_USB_CTL_PIPE_TIMEOUT);
+	if (ret > 0)
+		fw_str[ret] = '\0';
+	else
+		strscpy(fw_str, "unknown", size);
 }
 
 /* Parse the device information structure reported by the device and
@@ -1314,7 +1316,6 @@ static int ucan_probe(struct usb_interfa
 	u8 in_ep_addr;
 	u8 out_ep_addr;
 	union ucan_ctl_payload *ctl_msg_buffer;
-	char firmware_str[sizeof(union ucan_ctl_payload) + 1];
 
 	udev = interface_to_usbdev(intf);
 
@@ -1527,17 +1528,6 @@ static int ucan_probe(struct usb_interfa
 	 */
 	ucan_parse_device_info(up, &ctl_msg_buffer->cmd_get_device_info);
 
-	/* just print some device information - if available */
-	ret = ucan_device_request_in(up, UCAN_DEVICE_GET_FW_STRING, 0,
-				     sizeof(union ucan_ctl_payload));
-	if (ret > 0) {
-		/* copy string while ensuring zero termination */
-		strscpy(firmware_str, up->ctl_msg_buffer->raw,
-			sizeof(union ucan_ctl_payload) + 1);
-	} else {
-		strcpy(firmware_str, "unknown");
-	}
-
 	/* device is compatible, reset it */
 	ret = ucan_ctrl_command_out(up, UCAN_COMMAND_RESET, 0, 0);
 	if (ret < 0)
@@ -1555,7 +1545,10 @@ static int ucan_probe(struct usb_interfa
 
 	/* initialisation complete, log device info */
 	netdev_info(up->netdev, "registered device\n");
-	netdev_info(up->netdev, "firmware string: %s\n", firmware_str);
+	ucan_get_fw_str(up, up->ctl_msg_buffer->fw_str,
+			sizeof(up->ctl_msg_buffer->fw_str));
+	netdev_info(up->netdev, "firmware string: %s\n",
+		    up->ctl_msg_buffer->fw_str);
 
 	/* success */
 	return 0;

[PATCH 6.6 32/77] can: flexcan: only change CAN state when link up in system PM

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Haibo Chen <haibo.chen@nxp.com>

commit fd99d6ed20234b83d65b9c5417794343577cf3e5 upstream.

After a suspend/resume cycle on a down interface, it will come up as
ERROR-ACTIVE.

$ ip -details -s -s a s dev flexcan0
3: flexcan0: <NOARP,ECHO> mtu 16 qdisc pfifo_fast state DOWN group default qlen 10
    link/can  promiscuity 0 allmulti 0 minmtu 0 maxmtu 0
    can state STOPPED (berr-counter tx 0 rx 0) restart-ms 1000

$ sudo systemctl suspend

$ ip -details -s -s a s dev flexcan0
3: flexcan0: <NOARP,ECHO> mtu 16 qdisc pfifo_fast state DOWN group default qlen 10
    link/can  promiscuity 0 allmulti 0 minmtu 0 maxmtu 0
    can state ERROR-ACTIVE (berr-counter tx 0 rx 0) restart-ms 1000

And only set CAN state to CAN_STATE_ERROR_ACTIVE when resume process
has no issue, otherwise keep in CAN_STATE_SLEEPING as suspend did.

Fixes: 4de349e786a3 ("can: flexcan: fix resume function")
Cc: stable@vger.kernel.org
Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
Link: https://patch.msgid.link/20250314110145.899179-1-haibo.chen@nxp.com
Reported-by: Marc Kleine-Budde <mkl@pengutronix.de>
Closes: https://lore.kernel.org/all/20250314-married-polar-elephant-b15594-mkl@pengutronix.de
[mkl: add newlines]
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/can/flexcan/flexcan-core.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

--- a/drivers/net/can/flexcan/flexcan-core.c
+++ b/drivers/net/can/flexcan/flexcan-core.c
@@ -2251,8 +2251,9 @@ static int __maybe_unused flexcan_suspen
 		}
 		netif_stop_queue(dev);
 		netif_device_detach(dev);
+
+		priv->can.state = CAN_STATE_SLEEPING;
 	}
-	priv->can.state = CAN_STATE_SLEEPING;
 
 	return 0;
 }
@@ -2263,7 +2264,6 @@ static int __maybe_unused flexcan_resume
 	struct flexcan_priv *priv = netdev_priv(dev);
 	int err;
 
-	priv->can.state = CAN_STATE_ERROR_ACTIVE;
 	if (netif_running(dev)) {
 		netif_device_attach(dev);
 		netif_start_queue(dev);
@@ -2283,6 +2283,8 @@ static int __maybe_unused flexcan_resume
 
 			flexcan_chip_interrupts_enable(dev);
 		}
+
+		priv->can.state = CAN_STATE_ERROR_ACTIVE;
 	}
 
 	return 0;

[PATCH 6.6 33/77] can: flexcan: disable transceiver during system PM

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Haibo Chen <haibo.chen@nxp.com>

commit 5a19143124be42900b3fbc9ada3c919632eb45eb upstream.

During system PM, if no wakeup requirement, disable transceiver to
save power.

Fixes: 4de349e786a3 ("can: flexcan: fix resume function")
Cc: stable@vger.kernel.org
Reviewed-by: Frank Li <frank.li@nxp.com>
Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
Link: https://patch.msgid.link/20250314110145.899179-2-haibo.chen@nxp.com
[mkl: add newlines]
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/can/flexcan/flexcan-core.c |   12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

--- a/drivers/net/can/flexcan/flexcan-core.c
+++ b/drivers/net/can/flexcan/flexcan-core.c
@@ -2245,6 +2245,10 @@ static int __maybe_unused flexcan_suspen
 
 			flexcan_chip_interrupts_disable(dev);
 
+			err = flexcan_transceiver_disable(priv);
+			if (err)
+				return err;
+
 			err = pinctrl_pm_select_sleep_state(device);
 			if (err)
 				return err;
@@ -2277,10 +2281,16 @@ static int __maybe_unused flexcan_resume
 			if (err)
 				return err;
 
-			err = flexcan_chip_start(dev);
+			err = flexcan_transceiver_enable(priv);
 			if (err)
 				return err;
 
+			err = flexcan_chip_start(dev);
+			if (err) {
+				flexcan_transceiver_disable(priv);
+				return err;
+			}
+
 			flexcan_chip_interrupts_enable(dev);
 		}
 

[PATCH 6.6 34/77] drm/v3d: Dont run jobs that have errors flagged in its fence

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Maíra Canal <mcanal@igalia.com>

commit 80cbee810e4e13cdbd3ae9654e9ecddf17f3e828 upstream.

The V3D driver still relies on `drm_sched_increase_karma()` and
`drm_sched_resubmit_jobs()` for resubmissions when a timeout occurs.
The function `drm_sched_increase_karma()` marks the job as guilty, while
`drm_sched_resubmit_jobs()` sets an error (-ECANCELED) in the DMA fence of
that guilty job.

Because of this, we must check whether the job’s DMA fence has been
flagged with an error before executing the job. Otherwise, the same guilty
job may be resubmitted indefinitely, causing repeated GPU resets.

This patch adds a check for an error on the job's fence to prevent running
a guilty job that was previously flagged when the GPU timed out.

Note that the CPU and CACHE_CLEAN queues do not require this check, as
their jobs are executed synchronously once the DRM scheduler starts them.

Cc: stable@vger.kernel.org
Fixes: d223f98f0209 ("drm/v3d: Add support for compute shader dispatch.")
Fixes: 1584f16ca96e ("drm/v3d: Add support for submitting jobs to the TFU.")
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Signed-off-by: Maíra Canal <mcanal@igalia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250313-v3d-gpu-reset-fixes-v4-1-c1e780d8e096@igalia.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/gpu/drm/v3d/v3d_sched.c |    9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

--- a/drivers/gpu/drm/v3d/v3d_sched.c
+++ b/drivers/gpu/drm/v3d/v3d_sched.c
@@ -179,11 +179,15 @@ v3d_tfu_job_run(struct drm_sched_job *sc
 	struct drm_device *dev = &v3d->drm;
 	struct dma_fence *fence;
 
+	if (unlikely(job->base.base.s_fence->finished.error))
+		return NULL;
+
+	v3d->tfu_job = job;
+
 	fence = v3d_fence_create(v3d, V3D_TFU);
 	if (IS_ERR(fence))
 		return NULL;
 
-	v3d->tfu_job = job;
 	if (job->base.irq_fence)
 		dma_fence_put(job->base.irq_fence);
 	job->base.irq_fence = dma_fence_get(fence);
@@ -217,6 +221,9 @@ v3d_csd_job_run(struct drm_sched_job *sc
 	struct dma_fence *fence;
 	int i;
 
+	if (unlikely(job->base.base.s_fence->finished.error))
+		return NULL;
+
 	v3d->csd_job = job;
 
 	v3d_invalidate_caches(v3d);

[PATCH 6.6 35/77] riscv: dts: starfive: Fix a typo in StarFive JH7110 pin function definitions

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: E Shattow <e@freeshell.de>

commit 1b133129ad6b28186214259af3bd5fc651a85509 upstream.

Fix a typo in StarFive JH7110 pin function definitions for GPOUT_SYS_SDIO1_DATA4

Fixes: e22f09e598d12 ("riscv: dts: starfive: Add StarFive JH7110 pin function definitions")
Signed-off-by: E Shattow <e@freeshell.de>
Acked-by: Hal Feng <hal.feng@starfivetech.com>
CC: stable@vger.kernel.org
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/riscv/boot/dts/starfive/jh7110-pinfunc.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/riscv/boot/dts/starfive/jh7110-pinfunc.h b/arch/riscv/boot/dts/starfive/jh7110-pinfunc.h
index 256de17f5261..ae49c908e7fb 100644
--- a/arch/riscv/boot/dts/starfive/jh7110-pinfunc.h
+++ b/arch/riscv/boot/dts/starfive/jh7110-pinfunc.h
@@ -89,7 +89,7 @@
 #define GPOUT_SYS_SDIO1_DATA1			59
 #define GPOUT_SYS_SDIO1_DATA2			60
 #define GPOUT_SYS_SDIO1_DATA3			61
-#define GPOUT_SYS_SDIO1_DATA4			63
+#define GPOUT_SYS_SDIO1_DATA4			62
 #define GPOUT_SYS_SDIO1_DATA5			63
 #define GPOUT_SYS_SDIO1_DATA6			64
 #define GPOUT_SYS_SDIO1_DATA7			65
-- 
2.49.0

[PATCH 6.6 36/77] regulator: dummy: force synchronous probing

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Christian Eggers <ceggers@arri.de>

commit 8619909b38eeebd3e60910158d7d68441fc954e9 upstream.

Sometimes I get a NULL pointer dereference at boot time in kobject_get()
with the following call stack:

anatop_regulator_probe()
 devm_regulator_register()
  regulator_register()
   regulator_resolve_supply()
    kobject_get()

By placing some extra BUG_ON() statements I could verify that this is
raised because probing of the 'dummy' regulator driver is not completed
('dummy_regulator_rdev' is still NULL).

In the JTAG debugger I can see that dummy_regulator_probe() and
anatop_regulator_probe() can be run by different kernel threads
(kworker/u4:*).  I haven't further investigated whether this can be
changed or if there are other possibilities to force synchronization
between these two probe routines.  On the other hand I don't expect much
boot time penalty by probing the 'dummy' regulator synchronously.

Cc: stable@vger.kernel.org
Fixes: 259b93b21a9f ("regulator: Set PROBE_PREFER_ASYNCHRONOUS for drivers that existed in 4.14")
Signed-off-by: Christian Eggers <ceggers@arri.de>
Link: https://patch.msgid.link/20250311091803.31026-1-ceggers@arri.de
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/regulator/dummy.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/regulator/dummy.c b/drivers/regulator/dummy.c
index 5b9b9e4e762d..9f59889129ab 100644
--- a/drivers/regulator/dummy.c
+++ b/drivers/regulator/dummy.c
@@ -60,7 +60,7 @@ static struct platform_driver dummy_regulator_driver = {
 	.probe		= dummy_regulator_probe,
 	.driver		= {
 		.name		= "reg-dummy",
-		.probe_type	= PROBE_PREFER_ASYNCHRONOUS,
+		.probe_type	= PROBE_FORCE_SYNCHRONOUS,
 	},
 };
 
-- 
2.49.0

[PATCH 6.6 37/77] regulator: check that dummy regulator has been probed before using it

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Christian Eggers <ceggers@arri.de>

commit 2c7a50bec4958f1d1c84d19cde518d0e96a676fd upstream.

Due to asynchronous driver probing there is a chance that the dummy
regulator hasn't already been probed when first accessing it.

Cc: stable@vger.kernel.org
Signed-off-by: Christian Eggers <ceggers@arri.de>
Link: https://patch.msgid.link/20250313103051.32430-3-ceggers@arri.de
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/regulator/core.c |   12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -2084,6 +2084,10 @@ static int regulator_resolve_supply(stru
 
 		if (have_full_constraints()) {
 			r = dummy_regulator_rdev;
+			if (!r) {
+				ret = -EPROBE_DEFER;
+				goto out;
+			}
 			get_device(&r->dev);
 		} else {
 			dev_err(dev, "Failed to resolve %s-supply for %s\n",
@@ -2101,6 +2105,10 @@ static int regulator_resolve_supply(stru
 			goto out;
 		}
 		r = dummy_regulator_rdev;
+		if (!r) {
+			ret = -EPROBE_DEFER;
+			goto out;
+		}
 		get_device(&r->dev);
 	}
 
@@ -2209,8 +2217,10 @@ struct regulator *_regulator_get(struct
 			 * enabled, even if it isn't hooked up, and just
 			 * provide a dummy.
 			 */
-			dev_warn(dev, "supply %s not found, using dummy regulator\n", id);
 			rdev = dummy_regulator_rdev;
+			if (!rdev)
+				return ERR_PTR(-EPROBE_DEFER);
+			dev_warn(dev, "supply %s not found, using dummy regulator\n", id);
 			get_device(&rdev->dev);
 			break;
 

[PATCH 6.6 38/77] accel/qaic: Fix integer overflow in qaic_validate_req()

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Dan Carpenter <dan.carpenter@linaro.org>

commit 67d15c7aa0864dfd82325c7e7e7d8548b5224c7b upstream.

These are u64 variables that come from the user via
qaic_attach_slice_bo_ioctl().  Use check_add_overflow() to ensure that
the math doesn't have an integer wrapping bug.

Cc: stable@vger.kernel.org
Fixes: ff13be830333 ("accel/qaic: Add datapath")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Jeff Hugo <jeff.hugo@oss.qualcomm.com>
Signed-off-by: Jeff Hugo <jeff.hugo@oss.qualcomm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/176388fa-40fe-4cb4-9aeb-2c91c22130bd@stanley.mountain
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/accel/qaic/qaic_data.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/accel/qaic/qaic_data.c
+++ b/drivers/accel/qaic/qaic_data.c
@@ -550,6 +550,7 @@ static bool invalid_sem(struct qaic_sem
 static int qaic_validate_req(struct qaic_device *qdev, struct qaic_attach_slice_entry *slice_ent,
 			     u32 count, u64 total_size)
 {
+	u64 total;
 	int i;
 
 	for (i = 0; i < count; i++) {
@@ -559,7 +560,8 @@ static int qaic_validate_req(struct qaic
 		      invalid_sem(&slice_ent[i].sem2) || invalid_sem(&slice_ent[i].sem3))
 			return -EINVAL;
 
-		if (slice_ent[i].offset + slice_ent[i].size > total_size)
+		if (check_add_overflow(slice_ent[i].offset, slice_ent[i].size, &total) ||
+		    total > total_size)
 			return -EINVAL;
 	}
 

[PATCH 6.6 39/77] arm64: dts: freescale: imx8mp-verdin-dahlia: add Microphone Jack to sound card

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Stefan Eichenberger <stefan.eichenberger@toradex.com>

commit b0612fdba9afdce261bfb8684e0cece6f2e2b0bb upstream.

The simple-audio-card's microphone widget currently connects to the
headphone jack. Routing the microphone input to the microphone jack
allows for independent operation of the microphone and headphones.

This resolves the following boot-time kernel log message, which
indicated a conflict when the microphone and headphone functions were
not separated:
  debugfs: File 'Headphone Jack' in directory 'dapm' already present!

Fixes: 874958916844 ("arm64: dts: freescale: verdin-imx8mp: dahlia: add sound card")
Signed-off-by: Stefan Eichenberger <stefan.eichenberger@toradex.com>
Reviewed-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/arm64/boot/dts/freescale/imx8mp-verdin-dahlia.dtsi |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/arch/arm64/boot/dts/freescale/imx8mp-verdin-dahlia.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp-verdin-dahlia.dtsi
@@ -16,10 +16,10 @@
 			"Headphone Jack", "HPOUTR",
 			"IN2L", "Line In Jack",
 			"IN2R", "Line In Jack",
-			"Headphone Jack", "MICBIAS",
-			"IN1L", "Headphone Jack";
+			"Microphone Jack", "MICBIAS",
+			"IN1L", "Microphone Jack";
 		simple-audio-card,widgets =
-			"Microphone", "Headphone Jack",
+			"Microphone", "Microphone Jack",
 			"Headphone", "Headphone Jack",
 			"Line", "Line In Jack";
 

[PATCH 6.6 40/77] arm64: dts: freescale: imx8mm-verdin-dahlia: add Microphone Jack to sound card

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Stefan Eichenberger <stefan.eichenberger@toradex.com>

commit 2c1092823eb03f8508d6769e2f38eef7e1fe62a0 upstream.

The simple-audio-card's microphone widget currently connects to the
headphone jack. Routing the microphone input to the microphone jack
allows for independent operation of the microphone and headphones.

This resolves the following boot-time kernel log message, which
indicated a conflict when the microphone and headphone functions were
not separated:
  debugfs: File 'Headphone Jack' in directory 'dapm' already present!

Fixes: 6a57f224f734 ("arm64: dts: freescale: add initial support for verdin imx8m mini")
Signed-off-by: Stefan Eichenberger <stefan.eichenberger@toradex.com>
Reviewed-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/arm64/boot/dts/freescale/imx8mm-verdin-dahlia.dtsi |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/arch/arm64/boot/dts/freescale/imx8mm-verdin-dahlia.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm-verdin-dahlia.dtsi
@@ -16,10 +16,10 @@
 			"Headphone Jack", "HPOUTR",
 			"IN2L", "Line In Jack",
 			"IN2R", "Line In Jack",
-			"Headphone Jack", "MICBIAS",
-			"IN1L", "Headphone Jack";
+			"Microphone Jack", "MICBIAS",
+			"IN1L", "Microphone Jack";
 		simple-audio-card,widgets =
-			"Microphone", "Headphone Jack",
+			"Microphone", "Microphone Jack",
 			"Headphone", "Headphone Jack",
 			"Line", "Line In Jack";
 

[PATCH 6.6 41/77] arm64: dts: rockchip: fix pinmux of UART0 for PX30 Ringneck on Haikou

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Quentin Schulz <quentin.schulz@cherry.de>

commit 2db7d29c7b1629ced3cbab3de242511eb3c22066 upstream.

UART0 pinmux by default configures GPIO0_B5 in its UART RTS function for
UART0. However, by default on Haikou, it is used as GPIO as UART RTS for
UART5.

Therefore, let's update UART0 pinmux to not configure the pin in that
mode, a later commit will make UART5 request the GPIO pinmux.

Fixes: c484cf93f61b ("arm64: dts: rockchip: add PX30-µQ7 (Ringneck) SoM with Haikou baseboard")
Cc: stable@vger.kernel.org
Signed-off-by: Quentin Schulz <quentin.schulz@cherry.de>
Link: https://lore.kernel.org/r/20250225-ringneck-dtbos-v3-1-853a9a6dd597@cherry.de
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/arm64/boot/dts/rockchip/px30-ringneck-haikou.dts |    2 ++
 1 file changed, 2 insertions(+)

--- a/arch/arm64/boot/dts/rockchip/px30-ringneck-haikou.dts
+++ b/arch/arm64/boot/dts/rockchip/px30-ringneck-haikou.dts
@@ -221,6 +221,8 @@
 };
 
 &uart0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart0_xfer>;
 	status = "okay";
 };
 

[PATCH 6.6 42/77] arm64: dts: rockchip: Add missing PCIe supplies to RockPro64 board dtsi

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Dragan Simic <dsimic@manjaro.org>

commit ffcef3df680c437ca33ff434be18ec24d72907c2 upstream.

Add missing "vpcie0v9-supply" and "vpcie1v8-supply" properties to the "pcie0"
node in the Pine64 RockPro64 board dtsi file.  This eliminates the following
warnings from the kernel log:

  rockchip-pcie f8000000.pcie: supply vpcie1v8 not found, using dummy regulator
  rockchip-pcie f8000000.pcie: supply vpcie0v9 not found, using dummy regulator

These additions improve the accuracy of hardware description of the RockPro64
and, in theory, they should result in no functional changes to the way board
works after the changes, because the "vcca_0v9" and "vcca_1v8" regulators are
always enabled. [1][2]  However, extended reliability testing, performed by
Chris, [3] has proven that the age-old issues with some PCI Express cards,
when used with a Pine64 RockPro64, are also resolved.

Those issues were already mentioned in the commit 43853e843aa6 (arm64: dts:
rockchip: Remove unsupported node from the Pinebook Pro dts, 2024-04-01),
together with a brief description of the out-of-tree enumeration delay patch
that reportedly resolves those issues.  In a nutshell, booting a RockPro64
with some PCI Express cards attached to it caused a kernel oops. [4]

Symptomatically enough, to the commit author's best knowledge, only the Pine64
RockPro64, out of all RK3399-based boards and devices supported upstream, has
been reported to suffer from those PCI Express issues, and only the RockPro64
had some of the PCI Express supplies missing in its DT.  Thus, perhaps some
weird timing issues exist that caused the "vcca_1v8" always-on regulator,
which is part of the RK808 PMIC, to actually not be enabled before the PCI
Express is initialized and enumerated on the RockPro64, causing oopses with
some PCIe cards, and the aforementioned enumeration delay patch [4] probably
acted as just a workaround for the underlying timing issue.

Admittedly, the Pine64 RockPro64 is a bit specific board by having a standard
PCI Express slot, allowing use of various standard cards, but pretty much
standard PCI Express cards have been attached to other RK3399 boards as well,
and the commit author is unaware ot such issues reported for them.

It's quite hard to be sure that the PCI Express issues are fully resolved by
these additions to the DT, without some really extensive and time-consuming
testing.  However, these additions to the DT can result in good things and
improvements anyway, making them perfectly safe from the standpoint of being
unable to do any harm or cause some unforeseen regressions.

These changes apply to the both supported hardware revisions of the Pine64
RockPro64, i.e. to the production-run revisions 2.0 and 2.1. [1][2]

[1] https://files.pine64.org/doc/rockpro64/rockpro64_v21-SCH.pdf
[2] https://files.pine64.org/doc/rockpro64/rockpro64_v20-SCH.pdf
[3] https://z9.de/hedgedoc/s/nF4d5G7rg#reboot-tests-for-PCIe-improvements
[4] https://lore.kernel.org/lkml/20230509153912.515218-1-vincenzopalazzodev@gmail.com/T/#u

Fixes: bba821f5479e ("arm64: dts: rockchip: add PCIe nodes on rk3399-rockpro64")
Cc: stable@vger.kernel.org
Cc: Vincenzo Palazzo <vincenzopalazzodev@gmail.com>
Cc: Peter Geis <pgwipeout@gmail.com>
Cc: Bjorn Helgaas <helgaas@kernel.org>
Reported-by: Diederik de Haas <didi.debian@cknow.org>
Tested-by: Chris Vogel <chris@z9.de>
Signed-off-by: Dragan Simic <dsimic@manjaro.org>
Tested-by: Diederik de Haas <didi.debian@cknow.org>
Link: https://lore.kernel.org/r/b39cfd7490d8194f053bf3971f13a43472d1769e.1740941097.git.dsimic@manjaro.org
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dtsi |    2 ++
 1 file changed, 2 insertions(+)

--- a/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dtsi
@@ -661,6 +661,8 @@
 	num-lanes = <4>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&pcie_perst>;
+	vpcie0v9-supply = <&vcca_0v9>;
+	vpcie1v8-supply = <&vcca_1v8>;
 	vpcie12v-supply = <&vcc12v_dcin>;
 	vpcie3v3-supply = <&vcc3v3_pcie>;
 	status = "okay";

[PATCH 6.6 43/77] mmc: sdhci-brcmstb: add cqhci suspend/resume to PM ops

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Kamal Dasu <kamal.dasu@broadcom.com>

commit 723ef0e20dbb2aa1b5406d2bb75374fc48187daa upstream.

cqhci timeouts observed on brcmstb platforms during suspend:
  ...
  [  164.832853] mmc0: cqhci: timeout for tag 18
  ...

Adding cqhci_suspend()/resume() calls to disable cqe
in sdhci_brcmstb_suspend()/resume() respectively to fix
CQE timeouts seen on PM suspend.

Fixes: d46ba2d17f90 ("mmc: sdhci-brcmstb: Add support for Command Queuing (CQE)")
Cc: stable@vger.kernel.org
Signed-off-by: Kamal Dasu <kamal.dasu@broadcom.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://lore.kernel.org/r/20250311165946.28190-1-kamal.dasu@broadcom.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/mmc/host/sdhci-brcmstb.c |   10 ++++++++++
 1 file changed, 10 insertions(+)

--- a/drivers/mmc/host/sdhci-brcmstb.c
+++ b/drivers/mmc/host/sdhci-brcmstb.c
@@ -384,8 +384,15 @@ static int sdhci_brcmstb_suspend(struct
 	struct sdhci_host *host = dev_get_drvdata(dev);
 	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
 	struct sdhci_brcmstb_priv *priv = sdhci_pltfm_priv(pltfm_host);
+	int ret;
 
 	clk_disable_unprepare(priv->base_clk);
+	if (host->mmc->caps2 & MMC_CAP2_CQE) {
+		ret = cqhci_suspend(host->mmc);
+		if (ret)
+			return ret;
+	}
+
 	return sdhci_pltfm_suspend(dev);
 }
 
@@ -410,6 +417,9 @@ static int sdhci_brcmstb_resume(struct d
 			ret = clk_set_rate(priv->base_clk, priv->base_freq_hz);
 	}
 
+	if (host->mmc->caps2 & MMC_CAP2_CQE)
+		ret = cqhci_resume(host->mmc);
+
 	return ret;
 }
 #endif

[PATCH 6.6 44/77] mmc: atmel-mci: Add missing clk_disable_unprepare()

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Gu Bowen <gubowen5@huawei.com>

commit e51a349d2dcf1df8422dabb90b2f691dc7df6f92 upstream.

The error path when atmci_configure_dma() set dma fails in atmci driver
does not correctly disable the clock.
Add the missing clk_disable_unprepare() to the error path for pair with
clk_prepare_enable().

Fixes: 467e081d23e6 ("mmc: atmel-mci: use probe deferring if dma controller is not ready yet")
Signed-off-by: Gu Bowen <gubowen5@huawei.com>
Acked-by: Aubin Constans <aubin.constans@microchip.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20250225022856.3452240-1-gubowen5@huawei.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/mmc/host/atmel-mci.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/mmc/host/atmel-mci.c
+++ b/drivers/mmc/host/atmel-mci.c
@@ -2536,8 +2536,10 @@ static int atmci_probe(struct platform_d
 	/* Get MCI capabilities and set operations according to it */
 	atmci_get_cap(host);
 	ret = atmci_configure_dma(host);
-	if (ret == -EPROBE_DEFER)
+	if (ret == -EPROBE_DEFER) {
+		clk_disable_unprepare(host->mck);
 		goto err_dma_probe_defer;
+	}
 	if (ret == 0) {
 		host->prepare_data = &atmci_prepare_data_dma;
 		host->submit_data = &atmci_submit_data_dma;

[PATCH 6.6 45/77] mm: fix error handling in __filemap_get_folio() with FGP_NOWAIT

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Raphael S. Carvalho <raphaelsc@scylladb.com>

commit 182db972c9568dc530b2f586a2f82dfd039d9f2a upstream.

original report:
https://lore.kernel.org/all/CAKhLTr1UL3ePTpYjXOx2AJfNk8Ku2EdcEfu+CH1sf3Asr=B-Dw@mail.gmail.com/T/

When doing buffered writes with FGP_NOWAIT, under memory pressure, the
system returned ENOMEM despite there being plenty of available memory, to
be reclaimed from page cache.  The user space used io_uring interface,
which in turn submits I/O with FGP_NOWAIT (the fast path).

retsnoop pointed to iomap_get_folio:

00:34:16.180612 -> 00:34:16.180651 TID/PID 253786/253721
(reactor-1/combined_tests):

                    entry_SYSCALL_64_after_hwframe+0x76
                    do_syscall_64+0x82
                    __do_sys_io_uring_enter+0x265
                    io_submit_sqes+0x209
                    io_issue_sqe+0x5b
                    io_write+0xdd
                    xfs_file_buffered_write+0x84
                    iomap_file_buffered_write+0x1a6
    32us [-ENOMEM]  iomap_write_begin+0x408
iter=&{.inode=0xffff8c67aa031138,.len=4096,.flags=33,.iomap={.addr=0xffffffffffffffff,.length=4096,.type=1,.flags=3,.bdev=0x…
pos=0 len=4096 foliop=0xffffb32c296b7b80
!    4us [-ENOMEM]  iomap_get_folio
iter=&{.inode=0xffff8c67aa031138,.len=4096,.flags=33,.iomap={.addr=0xffffffffffffffff,.length=4096,.type=1,.flags=3,.bdev=0x…
pos=0 len=4096

This is likely a regression caused by 66dabbb65d67 ("mm: return an ERR_PTR
from __filemap_get_folio"), which moved error handling from
io_map_get_folio() to __filemap_get_folio(), but broke FGP_NOWAIT
handling, so ENOMEM is being escaped to user space.  Had it correctly
returned -EAGAIN with NOWAIT, either io_uring or user space itself would
be able to retry the request.

It's not enough to patch io_uring since the iomap interface is the one
responsible for it, and pwritev2(RWF_NOWAIT) and AIO interfaces must
return the proper error too.

The patch was tested with scylladb test suite (its original reproducer),
and the tests all pass now when memory is pressured.

Link: https://lkml.kernel.org/r/20250224143700.23035-1-raphaelsc@scylladb.com
Fixes: 66dabbb65d67 ("mm: return an ERR_PTR from __filemap_get_folio")
Signed-off-by: Raphael S. Carvalho <raphaelsc@scylladb.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Cc: "Darrick J. Wong" <djwong@kernel.org>
Cc: Matthew Wilcow (Oracle) <willy@infradead.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 mm/filemap.c |   13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -1976,8 +1976,19 @@ no_page:
 
 		if (err == -EEXIST)
 			goto repeat;
-		if (err)
+		if (err) {
+			/*
+			 * When NOWAIT I/O fails to allocate folios this could
+			 * be due to a nonblocking memory allocation and not
+			 * because the system actually is out of memory.
+			 * Return -EAGAIN so that there caller retries in a
+			 * blocking fashion instead of propagating -ENOMEM
+			 * to the application.
+			 */
+			if ((fgp_flags & FGP_NOWAIT) && err == -ENOMEM)
+				err = -EAGAIN;
 			return ERR_PTR(err);
+		}
 		/*
 		 * filemap_add_folio locks the page, and for mmap
 		 * we expect an unlocked page.

[PATCH 6.6 46/77] mm/migrate: fix shmem xarray update during migration

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Zi Yan <ziy@nvidia.com>

commit 60cf233b585cdf1f3c5e52d1225606b86acd08b0 upstream.

A shmem folio can be either in page cache or in swap cache, but not at the
same time.  Namely, once it is in swap cache, folio->mapping should be
NULL, and the folio is no longer in a shmem mapping.

In __folio_migrate_mapping(), to determine the number of xarray entries to
update, folio_test_swapbacked() is used, but that conflates shmem in page
cache case and shmem in swap cache case.  It leads to xarray multi-index
entry corruption, since it turns a sibling entry to a normal entry during
xas_store() (see [1] for a userspace reproduction).  Fix it by only using
folio_test_swapcache() to determine whether xarray is storing swap cache
entries or not to choose the right number of xarray entries to update.

[1] https://lore.kernel.org/linux-mm/Z8idPCkaJW1IChjT@casper.infradead.org/

Note:
In __split_huge_page(), folio_test_anon() && folio_test_swapcache() is
used to get swap_cache address space, but that ignores the shmem folio in
swap cache case.  It could lead to NULL pointer dereferencing when a
in-swap-cache shmem folio is split at __xa_store(), since
!folio_test_anon() is true and folio->mapping is NULL.  But fortunately,
its caller split_huge_page_to_list_to_order() bails out early with EBUSY
when folio->mapping is NULL.  So no need to take care of it here.

Link: https://lkml.kernel.org/r/20250305200403.2822855-1-ziy@nvidia.com
Fixes: fc346d0a70a1 ("mm: migrate high-order folios in swap cache correctly")
Signed-off-by: Zi Yan <ziy@nvidia.com>
Reported-by: Liu Shixin <liushixin2@huawei.com>
Closes: https://lore.kernel.org/all/28546fb4-5210-bf75-16d6-43e1f8646080@huawei.com/
Suggested-by: Hugh Dickins <hughd@google.com>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Barry Song <baohua@kernel.org>
Cc: Charan Teja Kalla <quic_charante@quicinc.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Lance Yang <ioworker0@gmail.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 mm/migrate.c |   10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -437,15 +437,13 @@ int folio_migrate_mapping(struct address
 	newfolio->index = folio->index;
 	newfolio->mapping = folio->mapping;
 	folio_ref_add(newfolio, nr); /* add cache reference */
-	if (folio_test_swapbacked(folio)) {
+	if (folio_test_swapbacked(folio))
 		__folio_set_swapbacked(newfolio);
-		if (folio_test_swapcache(folio)) {
-			folio_set_swapcache(newfolio);
-			newfolio->private = folio_get_private(folio);
-		}
+	if (folio_test_swapcache(folio)) {
+		folio_set_swapcache(newfolio);
+		newfolio->private = folio_get_private(folio);
 		entries = nr;
 	} else {
-		VM_BUG_ON_FOLIO(folio_test_swapcache(folio), folio);
 		entries = 1;
 	}
 

[PATCH 6.6 47/77] proc: fix UAF in proc_get_inode()

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Ye Bin <yebin10@huawei.com>

commit 654b33ada4ab5e926cd9c570196fefa7bec7c1df upstream.

Fix race between rmmod and /proc/XXX's inode instantiation.

The bug is that pde->proc_ops don't belong to /proc, it belongs to a
module, therefore dereferencing it after /proc entry has been registered
is a bug unless use_pde/unuse_pde() pair has been used.

use_pde/unuse_pde can be avoided (2 atomic ops!) because pde->proc_ops
never changes so information necessary for inode instantiation can be
saved _before_ proc_register() in PDE itself and used later, avoiding
pde->proc_ops->...  dereference.

      rmmod                         lookup
sys_delete_module
                         proc_lookup_de
			   pde_get(de);
			   proc_get_inode(dir->i_sb, de);
  mod->exit()
    proc_remove
      remove_proc_subtree
       proc_entry_rundown(de);
  free_module(mod);

                               if (S_ISREG(inode->i_mode))
	                         if (de->proc_ops->proc_read_iter)
                           --> As module is already freed, will trigger UAF

BUG: unable to handle page fault for address: fffffbfff80a702b
PGD 817fc4067 P4D 817fc4067 PUD 817fc0067 PMD 102ef4067 PTE 0
Oops: Oops: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 26 UID: 0 PID: 2667 Comm: ls Tainted: G
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996)
RIP: 0010:proc_get_inode+0x302/0x6e0
RSP: 0018:ffff88811c837998 EFLAGS: 00010a06
RAX: dffffc0000000000 RBX: ffffffffc0538140 RCX: 0000000000000007
RDX: 1ffffffff80a702b RSI: 0000000000000001 RDI: ffffffffc0538158
RBP: ffff8881299a6000 R08: 0000000067bbe1e5 R09: 1ffff11023906f20
R10: ffffffffb560ca07 R11: ffffffffb2b43a58 R12: ffff888105bb78f0
R13: ffff888100518048 R14: ffff8881299a6004 R15: 0000000000000001
FS:  00007f95b9686840(0000) GS:ffff8883af100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffbfff80a702b CR3: 0000000117dd2000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 proc_lookup_de+0x11f/0x2e0
 __lookup_slow+0x188/0x350
 walk_component+0x2ab/0x4f0
 path_lookupat+0x120/0x660
 filename_lookup+0x1ce/0x560
 vfs_statx+0xac/0x150
 __do_sys_newstat+0x96/0x110
 do_syscall_64+0x5f/0x170
 entry_SYSCALL_64_after_hwframe+0x76/0x7e

[adobriyan@gmail.com: don't do 2 atomic ops on the common path]
Link: https://lkml.kernel.org/r/3d25ded0-1739-447e-812b-e34da7990dcf@p183
Fixes: 778f3dd5a13c ("Fix procfs compat_ioctl regression")
Signed-off-by: Ye Bin <yebin10@huawei.com>
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: David S. Miller <davem@davemloft.net>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/proc/generic.c       |   10 +++++++++-
 fs/proc/inode.c         |    6 +++---
 fs/proc/internal.h      |   14 ++++++++++++++
 include/linux/proc_fs.h |    7 +++++--
 4 files changed, 31 insertions(+), 6 deletions(-)

--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -557,10 +557,16 @@ struct proc_dir_entry *proc_create_reg(c
 	return p;
 }
 
-static inline void pde_set_flags(struct proc_dir_entry *pde)
+static void pde_set_flags(struct proc_dir_entry *pde)
 {
 	if (pde->proc_ops->proc_flags & PROC_ENTRY_PERMANENT)
 		pde->flags |= PROC_ENTRY_PERMANENT;
+	if (pde->proc_ops->proc_read_iter)
+		pde->flags |= PROC_ENTRY_proc_read_iter;
+#ifdef CONFIG_COMPAT
+	if (pde->proc_ops->proc_compat_ioctl)
+		pde->flags |= PROC_ENTRY_proc_compat_ioctl;
+#endif
 }
 
 struct proc_dir_entry *proc_create_data(const char *name, umode_t mode,
@@ -624,6 +630,7 @@ struct proc_dir_entry *proc_create_seq_p
 	p->proc_ops = &proc_seq_ops;
 	p->seq_ops = ops;
 	p->state_size = state_size;
+	pde_set_flags(p);
 	return proc_register(parent, p);
 }
 EXPORT_SYMBOL(proc_create_seq_private);
@@ -654,6 +661,7 @@ struct proc_dir_entry *proc_create_singl
 		return NULL;
 	p->proc_ops = &proc_single_ops;
 	p->single_show = show;
+	pde_set_flags(p);
 	return proc_register(parent, p);
 }
 EXPORT_SYMBOL(proc_create_single_data);
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -679,13 +679,13 @@ struct inode *proc_get_inode(struct supe
 
 	if (S_ISREG(inode->i_mode)) {
 		inode->i_op = de->proc_iops;
-		if (de->proc_ops->proc_read_iter)
+		if (pde_has_proc_read_iter(de))
 			inode->i_fop = &proc_iter_file_ops;
 		else
 			inode->i_fop = &proc_reg_file_ops;
 #ifdef CONFIG_COMPAT
-		if (de->proc_ops->proc_compat_ioctl) {
-			if (de->proc_ops->proc_read_iter)
+		if (pde_has_proc_compat_ioctl(de)) {
+			if (pde_has_proc_read_iter(de))
 				inode->i_fop = &proc_iter_file_ops_compat;
 			else
 				inode->i_fop = &proc_reg_file_ops_compat;
--- a/fs/proc/internal.h
+++ b/fs/proc/internal.h
@@ -84,6 +84,20 @@ static inline void pde_make_permanent(st
 	pde->flags |= PROC_ENTRY_PERMANENT;
 }
 
+static inline bool pde_has_proc_read_iter(const struct proc_dir_entry *pde)
+{
+	return pde->flags & PROC_ENTRY_proc_read_iter;
+}
+
+static inline bool pde_has_proc_compat_ioctl(const struct proc_dir_entry *pde)
+{
+#ifdef CONFIG_COMPAT
+	return pde->flags & PROC_ENTRY_proc_compat_ioctl;
+#else
+	return false;
+#endif
+}
+
 extern struct kmem_cache *proc_dir_entry_cache;
 void pde_free(struct proc_dir_entry *pde);
 
--- a/include/linux/proc_fs.h
+++ b/include/linux/proc_fs.h
@@ -20,10 +20,13 @@ enum {
 	 * If in doubt, ignore this flag.
 	 */
 #ifdef MODULE
-	PROC_ENTRY_PERMANENT = 0U,
+	PROC_ENTRY_PERMANENT		= 0U,
 #else
-	PROC_ENTRY_PERMANENT = 1U << 0,
+	PROC_ENTRY_PERMANENT		= 1U << 0,
 #endif
+
+	PROC_ENTRY_proc_read_iter	= 1U << 1,
+	PROC_ENTRY_proc_compat_ioctl	= 1U << 2,
 };
 
 struct proc_ops {

[PATCH 6.6 48/77] memcg: drain obj stock on cpu hotplug teardown

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Shakeel Butt <shakeel.butt@linux.dev>

commit 9f01b4954490d4ccdbcc2b9be34a9921ceee9cbb upstream.

Currently on cpu hotplug teardown, only memcg stock is drained but we
need to drain the obj stock as well otherwise we will miss the stats
accumulated on the target cpu as well as the nr_bytes cached. The stats
include MEMCG_KMEM, NR_SLAB_RECLAIMABLE_B & NR_SLAB_UNRECLAIMABLE_B. In
addition we are leaking reference to struct obj_cgroup object.

Link: https://lkml.kernel.org/r/20250310230934.2913113-1-shakeel.butt@linux.dev
Fixes: bf4f059954dc ("mm: memcg/slab: obj_cgroup API")
Signed-off-by: Shakeel Butt <shakeel.butt@linux.dev>
Reviewed-by: Roman Gushchin <roman.gushchin@linux.dev>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 mm/memcontrol.c |    9 +++++++++
 1 file changed, 9 insertions(+)

--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -2378,9 +2378,18 @@ static void drain_all_stock(struct mem_c
 static int memcg_hotplug_cpu_dead(unsigned int cpu)
 {
 	struct memcg_stock_pcp *stock;
+	struct obj_cgroup *old;
+	unsigned long flags;
 
 	stock = &per_cpu(memcg_stock, cpu);
+
+	/* drain_obj_stock requires stock_lock */
+	local_lock_irqsave(&memcg_stock.stock_lock, flags);
+	old = drain_obj_stock(stock);
+	local_unlock_irqrestore(&memcg_stock.stock_lock, flags);
+
 	drain_stock(stock);
+	obj_cgroup_put(old);
 
 	return 0;
 }

[PATCH 6.6 49/77] ARM: dts: imx6qdl-apalis: Fix poweroff on Apalis iMX6

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Stefan Eichenberger <stefan.eichenberger@toradex.com>

commit 83964a29379cb08929a39172780a4c2992bc7c93 upstream.

The current solution for powering off the Apalis iMX6 is not functioning
as intended. To resolve this, it is necessary to power off the
vgen2_reg, which will also set the POWER_ENABLE_MOCI signal to a low
state. This ensures the carrier board is properly informed to initiate
its power-off sequence.

The new solution uses the regulator-poweroff driver, which will power
off the regulator during a system shutdown.

Cc: <stable@vger.kernel.org>
Fixes: 4eb56e26f92e ("ARM: dts: imx6q-apalis: Command pmic to standby for poweroff")
Signed-off-by: Stefan Eichenberger <stefan.eichenberger@toradex.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/arm/boot/dts/nxp/imx/imx6qdl-apalis.dtsi |   10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

--- a/arch/arm/boot/dts/nxp/imx/imx6qdl-apalis.dtsi
+++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-apalis.dtsi
@@ -101,6 +101,11 @@
 		};
 	};
 
+	poweroff {
+		compatible = "regulator-poweroff";
+		cpu-supply = <&vgen2_reg>;
+	};
+
 	reg_module_3v3: regulator-module-3v3 {
 		compatible = "regulator-fixed";
 		regulator-always-on;
@@ -220,10 +225,6 @@
 	status = "disabled";
 };
 
-&clks {
-	fsl,pmic-stby-poweroff;
-};
-
 /* Apalis SPI1 */
 &ecspi1 {
 	cs-gpios = <&gpio5 25 GPIO_ACTIVE_LOW>;
@@ -511,7 +512,6 @@
 
 	pmic: pmic@8 {
 		compatible = "fsl,pfuze100";
-		fsl,pmic-stby-poweroff;
 		reg = <0x08>;
 
 		regulators {

[PATCH 6.6 50/77] ARM: shmobile: smp: Enforce shmobile_smp_* alignment

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Geert Uytterhoeven <geert+renesas@glider.be>

commit 379c590113ce46f605439d4887996c60ab8820cc upstream.

When the addresses of the shmobile_smp_mpidr, shmobile_smp_fn, and
shmobile_smp_arg variables are not multiples of 4 bytes, secondary CPU
bring-up fails:

    smp: Bringing up secondary CPUs ...
    CPU1: failed to come online
    CPU2: failed to come online
    CPU3: failed to come online
    smp: Brought up 1 node, 1 CPU

Fix this by adding the missing alignment directive.

Fixes: 4e960f52fce16a3b ("ARM: shmobile: Move shmobile_smp_{mpidr, fn, arg}[] from .text to .bss")
Closes: https://lore.kernel.org/r/CAMuHMdU=QR-JLgEHKWpsr6SbaZRc-Hz9r91JfpP8c3n2G-OjqA@mail.gmail.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/c499234d559a0d95ad9472883e46077311051cd8.1741612208.git.geert+renesas@glider.be
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/arm/mach-shmobile/headsmp.S |    1 +
 1 file changed, 1 insertion(+)

--- a/arch/arm/mach-shmobile/headsmp.S
+++ b/arch/arm/mach-shmobile/headsmp.S
@@ -136,6 +136,7 @@ ENDPROC(shmobile_smp_sleep)
 	.long	shmobile_smp_arg - 1b
 
 	.bss
+	.align	2
 	.globl	shmobile_smp_mpidr
 shmobile_smp_mpidr:
 	.space	NR_CPUS * 4

[PATCH 6.6 51/77] efi/libstub: Avoid physical address 0x0 when doing random allocation

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Ard Biesheuvel <ardb@kernel.org>

commit cb16dfed0093217a68c0faa9394fa5823927e04c upstream.

Ben reports spurious EFI zboot failures on a system where physical RAM
starts at 0x0. When doing random memory allocation from the EFI stub on
such a platform, a random seed of 0x0 (which means no entropy source is
available) will result in the allocation to be placed at address 0x0 if
sufficient space is available.

When this allocation is subsequently passed on to the decompression
code, the 0x0 address is mistaken for NULL and the code complains and
gives up.

So avoid address 0x0 when doing random allocation, and set the minimum
address to the minimum alignment.

Cc: <stable@vger.kernel.org>
Reported-by: Ben Schneider <ben@bens.haus>
Tested-by: Ben Schneider <ben@bens.haus>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/firmware/efi/libstub/randomalloc.c |    4 ++++
 1 file changed, 4 insertions(+)

--- a/drivers/firmware/efi/libstub/randomalloc.c
+++ b/drivers/firmware/efi/libstub/randomalloc.c
@@ -75,6 +75,10 @@ efi_status_t efi_random_alloc(unsigned l
 	if (align < EFI_ALLOC_ALIGN)
 		align = EFI_ALLOC_ALIGN;
 
+	/* Avoid address 0x0, as it can be mistaken for NULL */
+	if (alloc_min == 0)
+		alloc_min = align;
+
 	size = round_up(size, EFI_ALLOC_ALIGN);
 
 	/* count the suitable slots in each memory map entry */

[PATCH 6.6 52/77] xsk: fix an integer overflow in xp_create_and_assign_umem()

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Gavrilov Ilia <Ilia.Gavrilov@infotecs.ru>

commit 559847f56769037e5b2e0474d3dbff985b98083d upstream.

Since the i and pool->chunk_size variables are of type 'u32',
their product can wrap around and then be cast to 'u64'.
This can lead to two different XDP buffers pointing to the same
memory area.

Found by InfoTeCS on behalf of Linux Verification Center
(linuxtesting.org) with SVACE.

Fixes: 94033cd8e73b ("xsk: Optimize for aligned case")
Cc: stable@vger.kernel.org
Signed-off-by: Ilia Gavrilov <Ilia.Gavrilov@infotecs.ru>
Link: https://patch.msgid.link/20250313085007.3116044-1-Ilia.Gavrilov@infotecs.ru
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/xdp/xsk_buff_pool.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/xdp/xsk_buff_pool.c
+++ b/net/xdp/xsk_buff_pool.c
@@ -104,7 +104,7 @@ struct xsk_buff_pool *xp_create_and_assi
 		if (pool->unaligned)
 			pool->free_heads[i] = xskb;
 		else
-			xp_init_xskb_addr(xskb, pool, i * pool->chunk_size);
+			xp_init_xskb_addr(xskb, pool, (u64)i * pool->chunk_size);
 	}
 
 	return pool;

[PATCH 6.6 53/77] batman-adv: Ignore own maximum aggregation size during RX

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Sven Eckelmann <sven@narfation.org>

commit 548b0c5de7619ef53bbde5590700693f2f6d2a56 upstream.

An OGMv1 and OGMv2 packet receive processing were not only limited by the
number of bytes in the received packet but also by the nodes maximum
aggregation packet size limit. But this limit is relevant for TX and not
for RX. It must not be enforced by batadv_(i)v_ogm_aggr_packet to avoid
loss of information in case of a different limit for sender and receiver.

This has a minor side effect for B.A.T.M.A.N. IV because the
batadv_iv_ogm_aggr_packet is also used for the preprocessing for the TX.
But since the aggregation code itself will not allow more than
BATADV_MAX_AGGREGATION_BYTES bytes, this check was never triggering (in
this context) prior of removing it.

Cc: stable@vger.kernel.org
Fixes: c6c8fea29769 ("net: Add batman-adv meshing protocol")
Fixes: 9323158ef9f4 ("batman-adv: OGMv2 - implement originators logic")
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/batman-adv/bat_iv_ogm.c |    3 +--
 net/batman-adv/bat_v_ogm.c  |    3 +--
 2 files changed, 2 insertions(+), 4 deletions(-)

--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -324,8 +324,7 @@ batadv_iv_ogm_aggr_packet(int buff_pos,
 	/* check if there is enough space for the optional TVLV */
 	next_buff_pos += ntohs(ogm_packet->tvlv_len);
 
-	return (next_buff_pos <= packet_len) &&
-	       (next_buff_pos <= BATADV_MAX_AGGREGATION_BYTES);
+	return next_buff_pos <= packet_len;
 }
 
 /* send a batman ogm to a given interface */
--- a/net/batman-adv/bat_v_ogm.c
+++ b/net/batman-adv/bat_v_ogm.c
@@ -839,8 +839,7 @@ batadv_v_ogm_aggr_packet(int buff_pos, i
 	/* check if there is enough space for the optional TVLV */
 	next_buff_pos += ntohs(ogm2_packet->tvlv_len);
 
-	return (next_buff_pos <= packet_len) &&
-	       (next_buff_pos <= BATADV_MAX_AGGREGATION_BYTES);
+	return next_buff_pos <= packet_len;
 }
 
 /**

[PATCH 6.6 54/77] soc: qcom: pdr: Fix the potential deadlock

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Saranya R <quic_sarar@quicinc.com>

commit 2eeb03ad9f42dfece63051be2400af487ddb96d2 upstream.

When some client process A call pdr_add_lookup() to add the look up for
the service and does schedule locator work, later a process B got a new
server packet indicating locator is up and call pdr_locator_new_server()
which eventually sets pdr->locator_init_complete to true which process A
sees and takes list lock and queries domain list but it will timeout due
to deadlock as the response will queued to the same qmi->wq and it is
ordered workqueue and process B is not able to complete new server
request work due to deadlock on list lock.

Fix it by removing the unnecessary list iteration as the list iteration
is already being done inside locator work, so avoid it here and just
call schedule_work() here.

       Process A                        Process B

                                     process_scheduled_works()
pdr_add_lookup()                      qmi_data_ready_work()
 process_scheduled_works()             pdr_locator_new_server()
                                         pdr->locator_init_complete=true;
   pdr_locator_work()
    mutex_lock(&pdr->list_lock);

     pdr_locate_service()                  mutex_lock(&pdr->list_lock);

      pdr_get_domain_list()
       pr_err("PDR: %s get domain list
               txn wait failed: %d\n",
               req->service_name,
               ret);

Timeout error log due to deadlock:

"
 PDR: tms/servreg get domain list txn wait failed: -110
 PDR: service lookup for msm/adsp/sensor_pd:tms/servreg failed: -110
"

Thanks to Bjorn and Johan for letting me know that this commit also fixes
an audio regression when using the in-kernel pd-mapper as that makes it
easier to hit this race. [1]

Link: https://lore.kernel.org/lkml/Zqet8iInnDhnxkT9@hovoldconsulting.com/ # [1]
Fixes: fbe639b44a82 ("soc: qcom: Introduce Protection Domain Restart helpers")
CC: stable@vger.kernel.org
Reviewed-by: Bjorn Andersson <bjorn.andersson@oss.qualcomm.com>
Tested-by: Bjorn Andersson <bjorn.andersson@oss.qualcomm.com>
Tested-by: Johan Hovold <johan+linaro@kernel.org>
Signed-off-by: Saranya R <quic_sarar@quicinc.com>
Co-developed-by: Mukesh Ojha <mukesh.ojha@oss.qualcomm.com>
Signed-off-by: Mukesh Ojha <mukesh.ojha@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20250212163720.1577876-1-mukesh.ojha@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/soc/qcom/pdr_interface.c |    8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

--- a/drivers/soc/qcom/pdr_interface.c
+++ b/drivers/soc/qcom/pdr_interface.c
@@ -74,7 +74,6 @@ static int pdr_locator_new_server(struct
 {
 	struct pdr_handle *pdr = container_of(qmi, struct pdr_handle,
 					      locator_hdl);
-	struct pdr_service *pds;
 
 	mutex_lock(&pdr->lock);
 	/* Create a local client port for QMI communication */
@@ -86,12 +85,7 @@ static int pdr_locator_new_server(struct
 	mutex_unlock(&pdr->lock);
 
 	/* Service pending lookup requests */
-	mutex_lock(&pdr->list_lock);
-	list_for_each_entry(pds, &pdr->lookups, node) {
-		if (pds->need_locator_lookup)
-			schedule_work(&pdr->locator_work);
-	}
-	mutex_unlock(&pdr->list_lock);
+	schedule_work(&pdr->locator_work);
 
 	return 0;
 }

[PATCH 6.6 55/77] drm/radeon: fix uninitialized size issue in radeon_vce_cs_parse()

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Nikita Zhandarovich <n.zhandarovich@fintech.ru>

commit dd8689b52a24807c2d5ce0a17cb26dc87f75235c upstream.

On the off chance that command stream passed from userspace via
ioctl() call to radeon_vce_cs_parse() is weirdly crafted and
first command to execute is to encode (case 0x03000001), the function
in question will attempt to call radeon_vce_cs_reloc() with size
argument that has not been properly initialized. Specifically, 'size'
will point to 'tmp' variable before the latter had a chance to be
assigned any value.

Play it safe and init 'tmp' with 0, thus ensuring that
radeon_vce_cs_reloc() will catch an early error in cases like these.

Found by Linux Verification Center (linuxtesting.org) with static
analysis tool SVACE.

Fixes: 2fc5703abda2 ("drm/radeon: check VCE relocation buffer range v3")
Signed-off-by: Nikita Zhandarovich <n.zhandarovich@fintech.ru>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 2d52de55f9ee7aaee0e09ac443f77855989c6b68)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/gpu/drm/radeon/radeon_vce.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/radeon/radeon_vce.c
+++ b/drivers/gpu/drm/radeon/radeon_vce.c
@@ -557,7 +557,7 @@ int radeon_vce_cs_parse(struct radeon_cs
 {
 	int session_idx = -1;
 	bool destroyed = false, created = false, allocated = false;
-	uint32_t tmp, handle = 0;
+	uint32_t tmp = 0, handle = 0;
 	uint32_t *size = &tmp;
 	int i, r = 0;
 

[PATCH 6.6 56/77] drm/sched: Fix fence reference count leak

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: qianyi liu <liuqianyi125@gmail.com>

commit a952f1ab696873be124e31ce5ef964d36bce817f upstream.

The last_scheduled fence leaks when an entity is being killed and adding
the cleanup callback fails.

Decrement the reference count of prev when dma_fence_add_callback()
fails, ensuring proper balance.

Cc: stable@vger.kernel.org	# v6.2+
[phasta: add git tag info for stable kernel]
Fixes: 2fdb8a8f07c2 ("drm/scheduler: rework entity flush, kill and fini")
Signed-off-by: qianyi liu <liuqianyi125@gmail.com>
Signed-off-by: Philipp Stanner <phasta@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20250311060251.4041101-1-liuqianyi125@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/gpu/drm/scheduler/sched_entity.c |   11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

--- a/drivers/gpu/drm/scheduler/sched_entity.c
+++ b/drivers/gpu/drm/scheduler/sched_entity.c
@@ -237,9 +237,16 @@ static void drm_sched_entity_kill(struct
 		struct drm_sched_fence *s_fence = job->s_fence;
 
 		dma_fence_get(&s_fence->finished);
-		if (!prev || dma_fence_add_callback(prev, &job->finish_cb,
-					   drm_sched_entity_kill_jobs_cb))
+		if (!prev ||
+		    dma_fence_add_callback(prev, &job->finish_cb,
+					   drm_sched_entity_kill_jobs_cb)) {
+			/*
+			 * Adding callback above failed.
+			 * dma_fence_put() checks for NULL.
+			 */
+			dma_fence_put(prev);
 			drm_sched_entity_kill_jobs_cb(NULL, &job->finish_cb);
+		}
 
 		prev = &s_fence->finished;
 	}

[PATCH 6.6 57/77] drm/amdgpu: Fix MPEG2, MPEG4 and VC1 video caps max size

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: David Rosca <david.rosca@amd.com>

commit f0105e173103c9d30a2bb959f7399437d536c848 upstream.

1920x1088 is the maximum supported resolution.

Signed-off-by: David Rosca <david.rosca@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Ruijing Dong <ruijing.dong@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 1a0807feb97082bff2b1342dbbe55a2a9a8bdb88)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/gpu/drm/amd/amdgpu/nv.c    |   18 +++++++++---------
 drivers/gpu/drm/amd/amdgpu/soc15.c |   18 +++++++++---------
 drivers/gpu/drm/amd/amdgpu/vi.c    |   36 ++++++++++++++++++------------------
 3 files changed, 36 insertions(+), 36 deletions(-)

--- a/drivers/gpu/drm/amd/amdgpu/nv.c
+++ b/drivers/gpu/drm/amd/amdgpu/nv.c
@@ -79,10 +79,10 @@ static const struct amdgpu_video_codecs
 
 /* Navi1x */
 static const struct amdgpu_video_codec_info nv_video_codecs_decode_array[] = {
-	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_MPEG2, 4096, 4096, 3)},
-	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_MPEG4, 4096, 4096, 5)},
+	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_MPEG2, 1920, 1088, 3)},
+	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_MPEG4, 1920, 1088, 5)},
 	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_MPEG4_AVC, 4096, 4096, 52)},
-	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_VC1, 4096, 4096, 4)},
+	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_VC1, 1920, 1088, 4)},
 	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_HEVC, 8192, 4352, 186)},
 	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_JPEG, 4096, 4096, 0)},
 	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_VP9, 8192, 4352, 0)},
@@ -105,10 +105,10 @@ static const struct amdgpu_video_codecs
 };
 
 static const struct amdgpu_video_codec_info sc_video_codecs_decode_array_vcn0[] = {
-	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_MPEG2, 4096, 4096, 3)},
-	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_MPEG4, 4096, 4096, 5)},
+	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_MPEG2, 1920, 1088, 3)},
+	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_MPEG4, 1920, 1088, 5)},
 	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_MPEG4_AVC, 4096, 4096, 52)},
-	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_VC1, 4096, 4096, 4)},
+	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_VC1, 1920, 1088, 4)},
 	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_HEVC, 8192, 4352, 186)},
 	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_JPEG, 4096, 4096, 0)},
 	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_VP9, 8192, 4352, 0)},
@@ -116,10 +116,10 @@ static const struct amdgpu_video_codec_i
 };
 
 static const struct amdgpu_video_codec_info sc_video_codecs_decode_array_vcn1[] = {
-	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_MPEG2, 4096, 4096, 3)},
-	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_MPEG4, 4096, 4096, 5)},
+	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_MPEG2, 1920, 1088, 3)},
+	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_MPEG4, 1920, 1088, 5)},
 	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_MPEG4_AVC, 4096, 4096, 52)},
-	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_VC1, 4096, 4096, 4)},
+	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_VC1, 1920, 1088, 4)},
 	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_HEVC, 8192, 4352, 186)},
 	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_JPEG, 4096, 4096, 0)},
 	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_VP9, 8192, 4352, 0)},
--- a/drivers/gpu/drm/amd/amdgpu/soc15.c
+++ b/drivers/gpu/drm/amd/amdgpu/soc15.c
@@ -103,10 +103,10 @@ static const struct amdgpu_video_codecs
 /* Vega */
 static const struct amdgpu_video_codec_info vega_video_codecs_decode_array[] =
 {
-	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_MPEG2, 4096, 4096, 3)},
-	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_MPEG4, 4096, 4096, 5)},
+	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_MPEG2, 1920, 1088, 3)},
+	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_MPEG4, 1920, 1088, 5)},
 	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_MPEG4_AVC, 4096, 4096, 52)},
-	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_VC1, 4096, 4096, 4)},
+	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_VC1, 1920, 1088, 4)},
 	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_HEVC, 4096, 4096, 186)},
 	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_JPEG, 4096, 4096, 0)},
 };
@@ -120,10 +120,10 @@ static const struct amdgpu_video_codecs
 /* Raven */
 static const struct amdgpu_video_codec_info rv_video_codecs_decode_array[] =
 {
-	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_MPEG2, 4096, 4096, 3)},
-	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_MPEG4, 4096, 4096, 5)},
+	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_MPEG2, 1920, 1088, 3)},
+	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_MPEG4, 1920, 1088, 5)},
 	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_MPEG4_AVC, 4096, 4096, 52)},
-	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_VC1, 4096, 4096, 4)},
+	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_VC1, 1920, 1088, 4)},
 	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_HEVC, 4096, 4096, 186)},
 	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_JPEG, 4096, 4096, 0)},
 	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_VP9, 4096, 4096, 0)},
@@ -138,10 +138,10 @@ static const struct amdgpu_video_codecs
 /* Renoir, Arcturus */
 static const struct amdgpu_video_codec_info rn_video_codecs_decode_array[] =
 {
-	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_MPEG2, 4096, 4096, 3)},
-	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_MPEG4, 4096, 4096, 5)},
+	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_MPEG2, 1920, 1088, 3)},
+	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_MPEG4, 1920, 1088, 5)},
 	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_MPEG4_AVC, 4096, 4096, 52)},
-	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_VC1, 4096, 4096, 4)},
+	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_VC1, 1920, 1088, 4)},
 	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_HEVC, 8192, 4352, 186)},
 	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_JPEG, 4096, 4096, 0)},
 	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_VP9, 8192, 4352, 0)},
--- a/drivers/gpu/drm/amd/amdgpu/vi.c
+++ b/drivers/gpu/drm/amd/amdgpu/vi.c
@@ -167,16 +167,16 @@ static const struct amdgpu_video_codec_i
 {
 	{
 		.codec_type = AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_MPEG2,
-		.max_width = 4096,
-		.max_height = 4096,
-		.max_pixels_per_frame = 4096 * 4096,
+		.max_width = 1920,
+		.max_height = 1088,
+		.max_pixels_per_frame = 1920 * 1088,
 		.max_level = 3,
 	},
 	{
 		.codec_type = AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_MPEG4,
-		.max_width = 4096,
-		.max_height = 4096,
-		.max_pixels_per_frame = 4096 * 4096,
+		.max_width = 1920,
+		.max_height = 1088,
+		.max_pixels_per_frame = 1920 * 1088,
 		.max_level = 5,
 	},
 	{
@@ -188,9 +188,9 @@ static const struct amdgpu_video_codec_i
 	},
 	{
 		.codec_type = AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_VC1,
-		.max_width = 4096,
-		.max_height = 4096,
-		.max_pixels_per_frame = 4096 * 4096,
+		.max_width = 1920,
+		.max_height = 1088,
+		.max_pixels_per_frame = 1920 * 1088,
 		.max_level = 4,
 	},
 };
@@ -206,16 +206,16 @@ static const struct amdgpu_video_codec_i
 {
 	{
 		.codec_type = AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_MPEG2,
-		.max_width = 4096,
-		.max_height = 4096,
-		.max_pixels_per_frame = 4096 * 4096,
+		.max_width = 1920,
+		.max_height = 1088,
+		.max_pixels_per_frame = 1920 * 1088,
 		.max_level = 3,
 	},
 	{
 		.codec_type = AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_MPEG4,
-		.max_width = 4096,
-		.max_height = 4096,
-		.max_pixels_per_frame = 4096 * 4096,
+		.max_width = 1920,
+		.max_height = 1088,
+		.max_pixels_per_frame = 1920 * 1088,
 		.max_level = 5,
 	},
 	{
@@ -227,9 +227,9 @@ static const struct amdgpu_video_codec_i
 	},
 	{
 		.codec_type = AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_VC1,
-		.max_width = 4096,
-		.max_height = 4096,
-		.max_pixels_per_frame = 4096 * 4096,
+		.max_width = 1920,
+		.max_height = 1088,
+		.max_pixels_per_frame = 1920 * 1088,
 		.max_level = 4,
 	},
 	{

[PATCH 6.6 58/77] drm/amdgpu: Fix JPEG video caps max size for navi1x and raven

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: David Rosca <david.rosca@amd.com>

commit ec33964d9d88488fa954a03d476a8b811efc6e85 upstream.

8192x8192 is the maximum supported resolution.

Signed-off-by: David Rosca <david.rosca@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Ruijing Dong <ruijing.dong@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 6e0d2fde3ae8fdb5b47e10389f23ed2cb4daec5d)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/gpu/drm/amd/amdgpu/nv.c    |    2 +-
 drivers/gpu/drm/amd/amdgpu/soc15.c |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/gpu/drm/amd/amdgpu/nv.c
+++ b/drivers/gpu/drm/amd/amdgpu/nv.c
@@ -84,7 +84,7 @@ static const struct amdgpu_video_codec_i
 	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_MPEG4_AVC, 4096, 4096, 52)},
 	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_VC1, 1920, 1088, 4)},
 	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_HEVC, 8192, 4352, 186)},
-	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_JPEG, 4096, 4096, 0)},
+	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_JPEG, 8192, 8192, 0)},
 	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_VP9, 8192, 4352, 0)},
 };
 
--- a/drivers/gpu/drm/amd/amdgpu/soc15.c
+++ b/drivers/gpu/drm/amd/amdgpu/soc15.c
@@ -125,7 +125,7 @@ static const struct amdgpu_video_codec_i
 	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_MPEG4_AVC, 4096, 4096, 52)},
 	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_VC1, 1920, 1088, 4)},
 	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_HEVC, 4096, 4096, 186)},
-	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_JPEG, 4096, 4096, 0)},
+	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_JPEG, 8192, 8192, 0)},
 	{codec_info_build(AMDGPU_INFO_VIDEO_CAPS_CODEC_IDX_VP9, 4096, 4096, 0)},
 };
 

[PATCH 6.6 59/77] drm/amd/display: should support dmub hw lock on Replay

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Martin Tsai <martin.tsai@amd.com>

commit bfeefe6ea5f18cabb8fda55364079573804623f9 upstream.

[Why]
Without acquiring DMCUB hw lock, a race condition is caused with
Panel Replay feature, which will trigger a hang. Indicate that a
lock is necessary to prevent this when replay feature is enabled.

[How]
To allow dmub hw lock on Replay.

Reviewed-by: Robin Chen <robin.chen@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Martin Tsai <martin.tsai@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/gpu/drm/amd/display/dc/dce/dmub_hw_lock_mgr.c |    4 ++++
 1 file changed, 4 insertions(+)

--- a/drivers/gpu/drm/amd/display/dc/dce/dmub_hw_lock_mgr.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dmub_hw_lock_mgr.c
@@ -65,5 +65,9 @@ bool should_use_dmub_lock(struct dc_link
 {
 	if (link->psr_settings.psr_version == DC_PSR_VERSION_SU_1)
 		return true;
+
+	if (link->replay_settings.replay_feature_enabled)
+		return true;
+
 	return false;
 }

[PATCH 6.6 60/77] drm/amd/display: Use HW lock mgr for PSR1 when only one eDP

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Mario Limonciello <mario.limonciello@amd.com>

commit acbf16a6ae775b4db86f537448cc466288aa307e upstream.

[WHY]
DMUB locking is important to make sure that registers aren't accessed
while in PSR.  Previously it was enabled but caused a deadlock in
situations with multiple eDP panels.

[HOW]
Detect if multiple eDP panels are in use to decide whether to use
lock. Refactor the function so that the first check is for PSR-SU
and then replay is in use to prevent having to look up number
of eDP panels for those configurations.

Fixes: f245b400a223 ("Revert "drm/amd/display: Use HW lock mgr for PSR1"")
Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3965
Reviewed-by: ChiaHsuan Chung <chiahsuan.chung@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit ed569e1279a3045d6b974226c814e071fa0193a6)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/gpu/drm/amd/display/dc/dce/dmub_hw_lock_mgr.c |   11 +++++++++++
 1 file changed, 11 insertions(+)

--- a/drivers/gpu/drm/amd/display/dc/dce/dmub_hw_lock_mgr.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dmub_hw_lock_mgr.c
@@ -69,5 +69,16 @@ bool should_use_dmub_lock(struct dc_link
 	if (link->replay_settings.replay_feature_enabled)
 		return true;
 
+	/* only use HW lock for PSR1 on single eDP */
+	if (link->psr_settings.psr_version == DC_PSR_VERSION_1) {
+		struct dc_link *edp_links[MAX_NUM_EDP];
+		int edp_num;
+
+		dc_get_edp_links(link->dc, edp_links, &edp_num);
+
+		if (edp_num == 1)
+			return true;
+	}
+
 	return false;
 }

[PATCH 6.6 61/77] ksmbd: fix incorrect validation for num_aces field of smb_acl

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Namjae Jeon <linkinjeon@kernel.org>

commit 1b8b67f3c5e5169535e26efedd3e422172e2db64 upstream.

parse_dcal() validate num_aces to allocate posix_ace_state_array.

if (num_aces > ULONG_MAX / sizeof(struct smb_ace *))

It is an incorrect validation that we can create an array of size ULONG_MAX.
smb_acl has ->size field to calculate actual number of aces in request buffer
size. Use this to check invalid num_aces.

Reported-by: Igor Leite Ladessa <igor-ladessa@hotmail.com>
Tested-by: Igor Leite Ladessa <igor-ladessa@hotmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/smb/server/smbacl.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

--- a/fs/smb/server/smbacl.c
+++ b/fs/smb/server/smbacl.c
@@ -398,7 +398,9 @@ static void parse_dacl(struct mnt_idmap
 	if (num_aces <= 0)
 		return;
 
-	if (num_aces > ULONG_MAX / sizeof(struct smb_ace *))
+	if (num_aces > (le16_to_cpu(pdacl->size) - sizeof(struct smb_acl)) /
+			(offsetof(struct smb_ace, sid) +
+			 offsetof(struct smb_sid, sub_auth) + sizeof(__le16)))
 		return;
 
 	ret = init_acl_state(&acl_state, num_aces);
@@ -432,6 +434,7 @@ static void parse_dacl(struct mnt_idmap
 			offsetof(struct smb_sid, sub_auth);
 
 		if (end_of_acl - acl_base < acl_size ||
+		    ppace[i]->sid.num_subauth == 0 ||
 		    ppace[i]->sid.num_subauth > SID_MAX_SUB_AUTHORITIES ||
 		    (end_of_acl - acl_base <
 		     acl_size + sizeof(__le32) * ppace[i]->sid.num_subauth) ||

[PATCH 6.6 62/77] mptcp: Fix data stream corruption in the address announcement

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Arthur Mongodin <amongodin@randorisec.fr>

commit 2c1f97a52cb827a5f2768e67a9dddffae1ed47ab upstream.

Because of the size restriction in the TCP options space, the MPTCP
ADD_ADDR option is exclusive and cannot be sent with other MPTCP ones.
For this reason, in the linked mptcp_out_options structure, group of
fields linked to different options are part of the same union.

There is a case where the mptcp_pm_add_addr_signal() function can modify
opts->addr, but not ended up sending an ADD_ADDR. Later on, back in
mptcp_established_options, other options will be sent, but with
unexpected data written in other fields due to the union, e.g. in
opts->ext_copy. This could lead to a data stream corruption in the next
packet.

Using an intermediate variable, prevents from corrupting previously
established DSS option. The assignment of the ADD_ADDR option
parameters is now done once we are sure this ADD_ADDR option can be set
in the packet, e.g. after having dropped other suboptions.

Fixes: 1bff1e43a30e ("mptcp: optimize out option generation")
Cc: stable@vger.kernel.org
Suggested-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Arthur Mongodin <amongodin@randorisec.fr>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
[ Matt: the commit message has been updated: long lines splits and some
  clarifications. ]
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250314-net-mptcp-fix-data-stream-corr-sockopt-v1-1-122dbb249db3@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/mptcp/options.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

--- a/net/mptcp/options.c
+++ b/net/mptcp/options.c
@@ -651,6 +651,7 @@ static bool mptcp_established_options_ad
 	struct mptcp_sock *msk = mptcp_sk(subflow->conn);
 	bool drop_other_suboptions = false;
 	unsigned int opt_size = *size;
+	struct mptcp_addr_info addr;
 	bool echo;
 	int len;
 
@@ -659,7 +660,7 @@ static bool mptcp_established_options_ad
 	 */
 	if (!mptcp_pm_should_add_signal(msk) ||
 	    (opts->suboptions & (OPTION_MPTCP_MPJ_ACK | OPTION_MPTCP_MPC_ACK)) ||
-	    !mptcp_pm_add_addr_signal(msk, skb, opt_size, remaining, &opts->addr,
+	    !mptcp_pm_add_addr_signal(msk, skb, opt_size, remaining, &addr,
 		    &echo, &drop_other_suboptions))
 		return false;
 
@@ -672,7 +673,7 @@ static bool mptcp_established_options_ad
 	else if (opts->suboptions & OPTION_MPTCP_DSS)
 		return false;
 
-	len = mptcp_add_addr_len(opts->addr.family, echo, !!opts->addr.port);
+	len = mptcp_add_addr_len(addr.family, echo, !!addr.port);
 	if (remaining < len)
 		return false;
 
@@ -689,6 +690,7 @@ static bool mptcp_established_options_ad
 		opts->ahmac = 0;
 		*size -= opt_size;
 	}
+	opts->addr = addr;
 	opts->suboptions |= OPTION_MPTCP_ADD_ADDR;
 	if (!echo) {
 		MPTCP_INC_STATS(sock_net(sk), MPTCP_MIB_ADDADDRTX);

[PATCH 6.6 63/77] KVM: arm64: Calculate cptr_el2 traps on activating traps

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Fuad Tabba <tabba@google.com>

[ Upstream commit 2fd5b4b0e7b440602455b79977bfa64dea101e6c ]

Similar to VHE, calculate the value of cptr_el2 from scratch on
activate traps. This removes the need to store cptr_el2 in every
vcpu structure. Moreover, some traps, such as whether the guest
owns the fp registers, need to be set on every vcpu run.

Reported-by: James Clark <james.clark@linaro.org>
Fixes: 5294afdbf45a ("KVM: arm64: Exclude FP ownership from kvm_vcpu_arch")
Signed-off-by: Fuad Tabba <tabba@google.com>
Link: https://lore.kernel.org/r/20241216105057.579031-13-tabba@google.com
Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/arm64/include/asm/kvm_host.h  |    1 
 arch/arm64/kvm/arm.c               |    1 
 arch/arm64/kvm/hyp/nvhe/hyp-main.c |    2 -
 arch/arm64/kvm/hyp/nvhe/pkvm.c     |   27 -------------------
 arch/arm64/kvm/hyp/nvhe/switch.c   |   52 ++++++++++++++++++++++---------------
 5 files changed, 32 insertions(+), 51 deletions(-)

--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -486,7 +486,6 @@ struct kvm_vcpu_arch {
 	/* Values of trap registers for the guest. */
 	u64 hcr_el2;
 	u64 mdcr_el2;
-	u64 cptr_el2;
 
 	/* Values of trap registers for the host before guest entry. */
 	u64 mdcr_el2_host;
--- a/arch/arm64/kvm/arm.c
+++ b/arch/arm64/kvm/arm.c
@@ -1309,7 +1309,6 @@ static int kvm_arch_vcpu_ioctl_vcpu_init
 	}
 
 	vcpu_reset_hcr(vcpu);
-	vcpu->arch.cptr_el2 = kvm_get_reset_cptr_el2(vcpu);
 
 	/*
 	 * Handle the "start in power-off" case.
--- a/arch/arm64/kvm/hyp/nvhe/hyp-main.c
+++ b/arch/arm64/kvm/hyp/nvhe/hyp-main.c
@@ -36,7 +36,6 @@ static void flush_hyp_vcpu(struct pkvm_h
 
 	hyp_vcpu->vcpu.arch.hcr_el2	= host_vcpu->arch.hcr_el2;
 	hyp_vcpu->vcpu.arch.mdcr_el2	= host_vcpu->arch.mdcr_el2;
-	hyp_vcpu->vcpu.arch.cptr_el2	= host_vcpu->arch.cptr_el2;
 
 	hyp_vcpu->vcpu.arch.iflags	= host_vcpu->arch.iflags;
 	hyp_vcpu->vcpu.arch.fp_state	= host_vcpu->arch.fp_state;
@@ -59,7 +58,6 @@ static void sync_hyp_vcpu(struct pkvm_hy
 	host_vcpu->arch.ctxt		= hyp_vcpu->vcpu.arch.ctxt;
 
 	host_vcpu->arch.hcr_el2		= hyp_vcpu->vcpu.arch.hcr_el2;
-	host_vcpu->arch.cptr_el2	= hyp_vcpu->vcpu.arch.cptr_el2;
 
 	host_vcpu->arch.fault		= hyp_vcpu->vcpu.arch.fault;
 
--- a/arch/arm64/kvm/hyp/nvhe/pkvm.c
+++ b/arch/arm64/kvm/hyp/nvhe/pkvm.c
@@ -26,8 +26,6 @@ static void pvm_init_traps_aa64pfr0(stru
 	const u64 feature_ids = pvm_read_id_reg(vcpu, SYS_ID_AA64PFR0_EL1);
 	u64 hcr_set = HCR_RW;
 	u64 hcr_clear = 0;
-	u64 cptr_set = 0;
-	u64 cptr_clear = 0;
 
 	/* Protected KVM does not support AArch32 guests. */
 	BUILD_BUG_ON(FIELD_GET(ARM64_FEATURE_MASK(ID_AA64PFR0_EL1_EL0),
@@ -57,21 +55,10 @@ static void pvm_init_traps_aa64pfr0(stru
 	/* Trap AMU */
 	if (!FIELD_GET(ARM64_FEATURE_MASK(ID_AA64PFR0_EL1_AMU), feature_ids)) {
 		hcr_clear |= HCR_AMVOFFEN;
-		cptr_set |= CPTR_EL2_TAM;
-	}
-
-	/* Trap SVE */
-	if (!FIELD_GET(ARM64_FEATURE_MASK(ID_AA64PFR0_EL1_SVE), feature_ids)) {
-		if (has_hvhe())
-			cptr_clear |= CPACR_EL1_ZEN_EL0EN | CPACR_EL1_ZEN_EL1EN;
-		else
-			cptr_set |= CPTR_EL2_TZ;
 	}
 
 	vcpu->arch.hcr_el2 |= hcr_set;
 	vcpu->arch.hcr_el2 &= ~hcr_clear;
-	vcpu->arch.cptr_el2 |= cptr_set;
-	vcpu->arch.cptr_el2 &= ~cptr_clear;
 }
 
 /*
@@ -101,7 +88,6 @@ static void pvm_init_traps_aa64dfr0(stru
 	const u64 feature_ids = pvm_read_id_reg(vcpu, SYS_ID_AA64DFR0_EL1);
 	u64 mdcr_set = 0;
 	u64 mdcr_clear = 0;
-	u64 cptr_set = 0;
 
 	/* Trap/constrain PMU */
 	if (!FIELD_GET(ARM64_FEATURE_MASK(ID_AA64DFR0_EL1_PMUVer), feature_ids)) {
@@ -128,17 +114,8 @@ static void pvm_init_traps_aa64dfr0(stru
 	if (!FIELD_GET(ARM64_FEATURE_MASK(ID_AA64DFR0_EL1_TraceFilt), feature_ids))
 		mdcr_set |= MDCR_EL2_TTRF;
 
-	/* Trap Trace */
-	if (!FIELD_GET(ARM64_FEATURE_MASK(ID_AA64DFR0_EL1_TraceVer), feature_ids)) {
-		if (has_hvhe())
-			cptr_set |= CPACR_EL1_TTA;
-		else
-			cptr_set |= CPTR_EL2_TTA;
-	}
-
 	vcpu->arch.mdcr_el2 |= mdcr_set;
 	vcpu->arch.mdcr_el2 &= ~mdcr_clear;
-	vcpu->arch.cptr_el2 |= cptr_set;
 }
 
 /*
@@ -189,10 +166,6 @@ static void pvm_init_trap_regs(struct kv
 	/* Clear res0 and set res1 bits to trap potential new features. */
 	vcpu->arch.hcr_el2 &= ~(HCR_RES0);
 	vcpu->arch.mdcr_el2 &= ~(MDCR_EL2_RES0);
-	if (!has_hvhe()) {
-		vcpu->arch.cptr_el2 |= CPTR_NVHE_EL2_RES1;
-		vcpu->arch.cptr_el2 &= ~(CPTR_NVHE_EL2_RES0);
-	}
 }
 
 /*
--- a/arch/arm64/kvm/hyp/nvhe/switch.c
+++ b/arch/arm64/kvm/hyp/nvhe/switch.c
@@ -36,34 +36,46 @@ DEFINE_PER_CPU(unsigned long, kvm_hyp_ve
 
 extern void kvm_nvhe_prepare_backtrace(unsigned long fp, unsigned long pc);
 
-static void __activate_traps(struct kvm_vcpu *vcpu)
+static void __activate_cptr_traps(struct kvm_vcpu *vcpu)
 {
-	u64 val;
+	u64 val = CPTR_EL2_TAM;	/* Same bit irrespective of E2H */
 
-	___activate_traps(vcpu);
-	__activate_traps_common(vcpu);
+	if (has_hvhe()) {
+		val |= CPACR_ELx_TTA;
 
-	val = vcpu->arch.cptr_el2;
-	val |= CPTR_EL2_TAM;	/* Same bit irrespective of E2H */
-	val |= has_hvhe() ? CPACR_EL1_TTA : CPTR_EL2_TTA;
-	if (cpus_have_final_cap(ARM64_SME)) {
-		if (has_hvhe())
-			val &= ~(CPACR_EL1_SMEN_EL1EN | CPACR_EL1_SMEN_EL0EN);
-		else
-			val |= CPTR_EL2_TSM;
-	}
+		if (guest_owns_fp_regs(vcpu)) {
+			val |= CPACR_ELx_FPEN;
+			if (vcpu_has_sve(vcpu))
+				val |= CPACR_ELx_ZEN;
+		}
+	} else {
+		val |= CPTR_EL2_TTA | CPTR_NVHE_EL2_RES1;
+
+		/*
+		 * Always trap SME since it's not supported in KVM.
+		 * TSM is RES1 if SME isn't implemented.
+		 */
+		val |= CPTR_EL2_TSM;
 
-	if (!guest_owns_fp_regs(vcpu)) {
-		if (has_hvhe())
-			val &= ~(CPACR_EL1_FPEN_EL0EN | CPACR_EL1_FPEN_EL1EN |
-				 CPACR_EL1_ZEN_EL0EN | CPACR_EL1_ZEN_EL1EN);
-		else
-			val |= CPTR_EL2_TFP | CPTR_EL2_TZ;
+		if (!vcpu_has_sve(vcpu) || !guest_owns_fp_regs(vcpu))
+			val |= CPTR_EL2_TZ;
 
-		__activate_traps_fpsimd32(vcpu);
+		if (!guest_owns_fp_regs(vcpu))
+			val |= CPTR_EL2_TFP;
 	}
 
+	if (!guest_owns_fp_regs(vcpu))
+		__activate_traps_fpsimd32(vcpu);
+
 	kvm_write_cptr_el2(val);
+}
+
+static void __activate_traps(struct kvm_vcpu *vcpu)
+{
+	___activate_traps(vcpu);
+	__activate_traps_common(vcpu);
+	__activate_cptr_traps(vcpu);
+
 	write_sysreg(__this_cpu_read(kvm_hyp_vector), vbar_el2);
 
 	if (cpus_have_final_cap(ARM64_WORKAROUND_SPECULATIVE_AT)) {

[PATCH 6.6 64/77] KVM: arm64: Unconditionally save+flush host FPSIMD/SVE/SME state

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Mark Rutland <mark.rutland@arm.com>

[ Upstream commit fbc7e61195e23f744814e78524b73b59faa54ab4 ]

There are several problems with the way hyp code lazily saves the host's
FPSIMD/SVE state, including:

* Host SVE being discarded unexpectedly due to inconsistent
  configuration of TIF_SVE and CPACR_ELx.ZEN. This has been seen to
  result in QEMU crashes where SVE is used by memmove(), as reported by
  Eric Auger:

  https://issues.redhat.com/browse/RHEL-68997

* Host SVE state is discarded *after* modification by ptrace, which was an
  unintentional ptrace ABI change introduced with lazy discarding of SVE state.

* The host FPMR value can be discarded when running a non-protected VM,
  where FPMR support is not exposed to a VM, and that VM uses
  FPSIMD/SVE. In these cases the hyp code does not save the host's FPMR
  before unbinding the host's FPSIMD/SVE/SME state, leaving a stale
  value in memory.

Avoid these by eagerly saving and "flushing" the host's FPSIMD/SVE/SME
state when loading a vCPU such that KVM does not need to save any of the
host's FPSIMD/SVE/SME state. For clarity, fpsimd_kvm_prepare() is
removed and the necessary call to fpsimd_save_and_flush_cpu_state() is
placed in kvm_arch_vcpu_load_fp(). As 'fpsimd_state' and 'fpmr_ptr'
should not be used, they are set to NULL; all uses of these will be
removed in subsequent patches.

Historical problems go back at least as far as v5.17, e.g. erroneous
assumptions about TIF_SVE being clear in commit:

  8383741ab2e773a9 ("KVM: arm64: Get rid of host SVE tracking/saving")

... and so this eager save+flush probably needs to be backported to ALL
stable trees.

Fixes: 93ae6b01bafee8fa ("KVM: arm64: Discard any SVE state when entering KVM guests")
Fixes: 8c845e2731041f0f ("arm64/sve: Leave SVE enabled on syscall if we don't context switch")
Fixes: ef3be86021c3bdf3 ("KVM: arm64: Add save/restore support for FPMR")
Reported-by: Eric Auger <eauger@redhat.com>
Reported-by: Wilco Dijkstra <wilco.dijkstra@arm.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Tested-by: Mark Brown <broonie@kernel.org>
Tested-by: Eric Auger <eric.auger@redhat.com>
Acked-by: Will Deacon <will@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Florian Weimer <fweimer@redhat.com>
Cc: Fuad Tabba <tabba@google.com>
Cc: Jeremy Linton <jeremy.linton@arm.com>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Oliver Upton <oliver.upton@linux.dev>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Oliver Upton <oliver.upton@linux.dev>
Link: https://lore.kernel.org/r/20250210195226.1215254-2-mark.rutland@arm.com
Signed-off-by: Marc Zyngier <maz@kernel.org>
[ Mark: Handle vcpu/host flag conflict ]
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/arm64/kernel/fpsimd.c |   25 -------------------------
 arch/arm64/kvm/fpsimd.c    |   31 ++++++++-----------------------
 2 files changed, 8 insertions(+), 48 deletions(-)

--- a/arch/arm64/kernel/fpsimd.c
+++ b/arch/arm64/kernel/fpsimd.c
@@ -1708,31 +1708,6 @@ void fpsimd_signal_preserve_current_stat
 }
 
 /*
- * Called by KVM when entering the guest.
- */
-void fpsimd_kvm_prepare(void)
-{
-	if (!system_supports_sve())
-		return;
-
-	/*
-	 * KVM does not save host SVE state since we can only enter
-	 * the guest from a syscall so the ABI means that only the
-	 * non-saved SVE state needs to be saved.  If we have left
-	 * SVE enabled for performance reasons then update the task
-	 * state to be FPSIMD only.
-	 */
-	get_cpu_fpsimd_context();
-
-	if (test_and_clear_thread_flag(TIF_SVE)) {
-		sve_to_fpsimd(current);
-		current->thread.fp_type = FP_STATE_FPSIMD;
-	}
-
-	put_cpu_fpsimd_context();
-}
-
-/*
  * Associate current's FPSIMD context with this cpu
  * The caller must have ownership of the cpu FPSIMD context before calling
  * this function.
--- a/arch/arm64/kvm/fpsimd.c
+++ b/arch/arm64/kvm/fpsimd.c
@@ -79,14 +79,16 @@ void kvm_arch_vcpu_load_fp(struct kvm_vc
 	if (!system_supports_fpsimd())
 		return;
 
-	fpsimd_kvm_prepare();
-
 	/*
-	 * We will check TIF_FOREIGN_FPSTATE just before entering the
-	 * guest in kvm_arch_vcpu_ctxflush_fp() and override this to
-	 * FP_STATE_FREE if the flag set.
+	 * Ensure that any host FPSIMD/SVE/SME state is saved and unbound such
+	 * that the host kernel is responsible for restoring this state upon
+	 * return to userspace, and the hyp code doesn't need to save anything.
+	 *
+	 * When the host may use SME, fpsimd_save_and_flush_cpu_state() ensures
+	 * that PSTATE.{SM,ZA} == {0,0}.
 	 */
-	vcpu->arch.fp_state = FP_STATE_HOST_OWNED;
+	fpsimd_save_and_flush_cpu_state();
+	vcpu->arch.fp_state = FP_STATE_FREE;
 
 	vcpu_clear_flag(vcpu, HOST_SVE_ENABLED);
 	if (read_sysreg(cpacr_el1) & CPACR_EL1_ZEN_EL0EN)
@@ -96,23 +98,6 @@ void kvm_arch_vcpu_load_fp(struct kvm_vc
 		vcpu_clear_flag(vcpu, HOST_SME_ENABLED);
 		if (read_sysreg(cpacr_el1) & CPACR_EL1_SMEN_EL0EN)
 			vcpu_set_flag(vcpu, HOST_SME_ENABLED);
-
-		/*
-		 * If PSTATE.SM is enabled then save any pending FP
-		 * state and disable PSTATE.SM. If we leave PSTATE.SM
-		 * enabled and the guest does not enable SME via
-		 * CPACR_EL1.SMEN then operations that should be valid
-		 * may generate SME traps from EL1 to EL1 which we
-		 * can't intercept and which would confuse the guest.
-		 *
-		 * Do the same for PSTATE.ZA in the case where there
-		 * is state in the registers which has not already
-		 * been saved, this is very unlikely to happen.
-		 */
-		if (read_sysreg_s(SYS_SVCR) & (SVCR_SM_MASK | SVCR_ZA_MASK)) {
-			vcpu->arch.fp_state = FP_STATE_FREE;
-			fpsimd_save_and_flush_cpu_state();
-		}
 	}
 }
 

[PATCH 6.6 65/77] KVM: arm64: Remove host FPSIMD saving for non-protected KVM

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Mark Rutland <mark.rutland@arm.com>

[ Upstream commit 8eca7f6d5100b6997df4f532090bc3f7e0203bef ]

Now that the host eagerly saves its own FPSIMD/SVE/SME state,
non-protected KVM never needs to save the host FPSIMD/SVE/SME state,
and the code to do this is never used. Protected KVM still needs to
save/restore the host FPSIMD/SVE state to avoid leaking guest state to
the host (and to avoid revealing to the host whether the guest used
FPSIMD/SVE/SME), and that code needs to be retained.

Remove the unused code and data structures.

To avoid the need for a stub copy of kvm_hyp_save_fpsimd_host() in the
VHE hyp code, the nVHE/hVHE version is moved into the shared switch
header, where it is only invoked when KVM is in protected mode.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Tested-by: Mark Brown <broonie@kernel.org>
Acked-by: Will Deacon <will@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Fuad Tabba <tabba@google.com>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Oliver Upton <oliver.upton@linux.dev>
Reviewed-by: Oliver Upton <oliver.upton@linux.dev>
Link: https://lore.kernel.org/r/20250210195226.1215254-3-mark.rutland@arm.com
Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/arm64/include/asm/kvm_host.h       |    1 -
 arch/arm64/kvm/fpsimd.c                 |    2 --
 arch/arm64/kvm/hyp/include/hyp/switch.h |    4 ----
 arch/arm64/kvm/hyp/nvhe/hyp-main.c      |    1 -
 4 files changed, 8 deletions(-)

--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -535,7 +535,6 @@ struct kvm_vcpu_arch {
 	struct kvm_guest_debug_arch vcpu_debug_state;
 	struct kvm_guest_debug_arch external_debug_state;
 
-	struct user_fpsimd_state *host_fpsimd_state;	/* hyp VA */
 	struct task_struct *parent_task;
 
 	struct {
--- a/arch/arm64/kvm/fpsimd.c
+++ b/arch/arm64/kvm/fpsimd.c
@@ -49,8 +49,6 @@ int kvm_arch_vcpu_run_map_fp(struct kvm_
 	if (ret)
 		return ret;
 
-	vcpu->arch.host_fpsimd_state = kern_hyp_va(fpsimd);
-
 	/*
 	 * We need to keep current's task_struct pinned until its data has been
 	 * unshared with the hypervisor to make sure it is not re-used by the
--- a/arch/arm64/kvm/hyp/include/hyp/switch.h
+++ b/arch/arm64/kvm/hyp/include/hyp/switch.h
@@ -321,10 +321,6 @@ static bool kvm_hyp_handle_fpsimd(struct
 	}
 	isb();
 
-	/* Write out the host state if it's in the registers */
-	if (vcpu->arch.fp_state == FP_STATE_HOST_OWNED)
-		__fpsimd_save_state(vcpu->arch.host_fpsimd_state);
-
 	/* Restore the guest state */
 	if (sve_guest)
 		__hyp_sve_restore_guest(vcpu);
--- a/arch/arm64/kvm/hyp/nvhe/hyp-main.c
+++ b/arch/arm64/kvm/hyp/nvhe/hyp-main.c
@@ -41,7 +41,6 @@ static void flush_hyp_vcpu(struct pkvm_h
 	hyp_vcpu->vcpu.arch.fp_state	= host_vcpu->arch.fp_state;
 
 	hyp_vcpu->vcpu.arch.debug_ptr	= kern_hyp_va(host_vcpu->arch.debug_ptr);
-	hyp_vcpu->vcpu.arch.host_fpsimd_state = host_vcpu->arch.host_fpsimd_state;
 
 	hyp_vcpu->vcpu.arch.vsesr_el2	= host_vcpu->arch.vsesr_el2;
 

[PATCH 6.6 66/77] KVM: arm64: Remove VHE host restore of CPACR_EL1.ZEN

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Mark Rutland <mark.rutland@arm.com>

[ Upstream commit 459f059be702056d91537b99a129994aa6ccdd35 ]

When KVM is in VHE mode, the host kernel tries to save and restore the
configuration of CPACR_EL1.ZEN (i.e. CPTR_EL2.ZEN when HCR_EL2.E2H=1)
across kvm_arch_vcpu_load_fp() and kvm_arch_vcpu_put_fp(), since the
configuration may be clobbered by hyp when running a vCPU. This logic is
currently redundant.

The VHE hyp code unconditionally configures CPTR_EL2.ZEN to 0b01 when
returning to the host, permitting host kernel usage of SVE.

Now that the host eagerly saves and unbinds its own FPSIMD/SVE/SME
state, there's no need to save/restore the state of the EL0 SVE trap.
The kernel can safely save/restore state without trapping, as described
above, and will restore userspace state (including trap controls) before
returning to userspace.

Remove the redundant logic.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Tested-by: Mark Brown <broonie@kernel.org>
Acked-by: Will Deacon <will@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Fuad Tabba <tabba@google.com>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Oliver Upton <oliver.upton@linux.dev>
Reviewed-by: Oliver Upton <oliver.upton@linux.dev>
Link: https://lore.kernel.org/r/20250210195226.1215254-4-mark.rutland@arm.com
Signed-off-by: Marc Zyngier <maz@kernel.org>
[Rework for refactoring of where the flags are stored -- broonie]
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/arm64/include/asm/kvm_host.h |    2 --
 arch/arm64/kvm/fpsimd.c           |   16 ----------------
 2 files changed, 18 deletions(-)

--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -717,8 +717,6 @@ struct kvm_vcpu_arch {
 /* vcpu running in HYP context */
 #define VCPU_HYP_CONTEXT	__vcpu_single_flag(iflags, BIT(7))
 
-/* SVE enabled for host EL0 */
-#define HOST_SVE_ENABLED	__vcpu_single_flag(sflags, BIT(0))
 /* SME enabled for EL0 */
 #define HOST_SME_ENABLED	__vcpu_single_flag(sflags, BIT(1))
 /* Physical CPU not in supported_cpus */
--- a/arch/arm64/kvm/fpsimd.c
+++ b/arch/arm64/kvm/fpsimd.c
@@ -88,10 +88,6 @@ void kvm_arch_vcpu_load_fp(struct kvm_vc
 	fpsimd_save_and_flush_cpu_state();
 	vcpu->arch.fp_state = FP_STATE_FREE;
 
-	vcpu_clear_flag(vcpu, HOST_SVE_ENABLED);
-	if (read_sysreg(cpacr_el1) & CPACR_EL1_ZEN_EL0EN)
-		vcpu_set_flag(vcpu, HOST_SVE_ENABLED);
-
 	if (system_supports_sme()) {
 		vcpu_clear_flag(vcpu, HOST_SME_ENABLED);
 		if (read_sysreg(cpacr_el1) & CPACR_EL1_SMEN_EL0EN)
@@ -189,18 +185,6 @@ void kvm_arch_vcpu_put_fp(struct kvm_vcp
 		}
 
 		fpsimd_save_and_flush_cpu_state();
-	} else if (has_vhe() && system_supports_sve()) {
-		/*
-		 * The FPSIMD/SVE state in the CPU has not been touched, and we
-		 * have SVE (and VHE): CPACR_EL1 (alias CPTR_EL2) has been
-		 * reset by kvm_reset_cptr_el2() in the Hyp code, disabling SVE
-		 * for EL0.  To avoid spurious traps, restore the trap state
-		 * seen by kvm_arch_vcpu_load_fp():
-		 */
-		if (vcpu_get_flag(vcpu, HOST_SVE_ENABLED))
-			sysreg_clear_set(CPACR_EL1, 0, CPACR_EL1_ZEN_EL0EN);
-		else
-			sysreg_clear_set(CPACR_EL1, CPACR_EL1_ZEN_EL0EN, 0);
 	}
 
 	local_irq_restore(flags);

[PATCH 6.6 67/77] KVM: arm64: Remove VHE host restore of CPACR_EL1.SMEN

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Mark Rutland <mark.rutland@arm.com>

[ Upstream commit 407a99c4654e8ea65393f412c421a55cac539f5b ]

When KVM is in VHE mode, the host kernel tries to save and restore the
configuration of CPACR_EL1.SMEN (i.e. CPTR_EL2.SMEN when HCR_EL2.E2H=1)
across kvm_arch_vcpu_load_fp() and kvm_arch_vcpu_put_fp(), since the
configuration may be clobbered by hyp when running a vCPU. This logic
has historically been broken, and is currently redundant.

This logic was originally introduced in commit:

  861262ab86270206 ("KVM: arm64: Handle SME host state when running guests")

At the time, the VHE hyp code would reset CPTR_EL2.SMEN to 0b00 when
returning to the host, trapping host access to SME state. Unfortunately,
this was unsafe as the host could take a softirq before calling
kvm_arch_vcpu_put_fp(), and if a softirq handler were to use kernel mode
NEON the resulting attempt to save the live FPSIMD/SVE/SME state would
result in a fatal trap.

That issue was limited to VHE mode. For nVHE/hVHE modes, KVM always
saved/restored the host kernel's CPACR_EL1 value, and configured
CPTR_EL2.TSM to 0b0, ensuring that host usage of SME would not be
trapped.

The issue above was incidentally fixed by commit:

  375110ab51dec5dc ("KVM: arm64: Fix resetting SME trap values on reset for (h)VHE")

That commit changed the VHE hyp code to configure CPTR_EL2.SMEN to 0b01
when returning to the host, permitting host kernel usage of SME,
avoiding the issue described above. At the time, this was not identified
as a fix for commit 861262ab86270206.

Now that the host eagerly saves and unbinds its own FPSIMD/SVE/SME
state, there's no need to save/restore the state of the EL0 SME trap.
The kernel can safely save/restore state without trapping, as described
above, and will restore userspace state (including trap controls) before
returning to userspace.

Remove the redundant logic.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Tested-by: Mark Brown <broonie@kernel.org>
Acked-by: Will Deacon <will@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Fuad Tabba <tabba@google.com>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Oliver Upton <oliver.upton@linux.dev>
Reviewed-by: Oliver Upton <oliver.upton@linux.dev>
Link: https://lore.kernel.org/r/20250210195226.1215254-5-mark.rutland@arm.com
Signed-off-by: Marc Zyngier <maz@kernel.org>
[Update for rework of flags storage -- broonie]
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/arm64/include/asm/kvm_host.h |    2 --
 arch/arm64/kvm/fpsimd.c           |   23 -----------------------
 2 files changed, 25 deletions(-)

--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -717,8 +717,6 @@ struct kvm_vcpu_arch {
 /* vcpu running in HYP context */
 #define VCPU_HYP_CONTEXT	__vcpu_single_flag(iflags, BIT(7))
 
-/* SME enabled for EL0 */
-#define HOST_SME_ENABLED	__vcpu_single_flag(sflags, BIT(1))
 /* Physical CPU not in supported_cpus */
 #define ON_UNSUPPORTED_CPU	__vcpu_single_flag(sflags, BIT(2))
 /* WFIT instruction trapped */
--- a/arch/arm64/kvm/fpsimd.c
+++ b/arch/arm64/kvm/fpsimd.c
@@ -87,12 +87,6 @@ void kvm_arch_vcpu_load_fp(struct kvm_vc
 	 */
 	fpsimd_save_and_flush_cpu_state();
 	vcpu->arch.fp_state = FP_STATE_FREE;
-
-	if (system_supports_sme()) {
-		vcpu_clear_flag(vcpu, HOST_SME_ENABLED);
-		if (read_sysreg(cpacr_el1) & CPACR_EL1_SMEN_EL0EN)
-			vcpu_set_flag(vcpu, HOST_SME_ENABLED);
-	}
 }
 
 /*
@@ -157,23 +151,6 @@ void kvm_arch_vcpu_put_fp(struct kvm_vcp
 
 	local_irq_save(flags);
 
-	/*
-	 * If we have VHE then the Hyp code will reset CPACR_EL1 to
-	 * the default value and we need to reenable SME.
-	 */
-	if (has_vhe() && system_supports_sme()) {
-		/* Also restore EL0 state seen on entry */
-		if (vcpu_get_flag(vcpu, HOST_SME_ENABLED))
-			sysreg_clear_set(CPACR_EL1, 0,
-					 CPACR_EL1_SMEN_EL0EN |
-					 CPACR_EL1_SMEN_EL1EN);
-		else
-			sysreg_clear_set(CPACR_EL1,
-					 CPACR_EL1_SMEN_EL0EN,
-					 CPACR_EL1_SMEN_EL1EN);
-		isb();
-	}
-
 	if (vcpu->arch.fp_state == FP_STATE_GUEST_OWNED) {
 		if (vcpu_has_sve(vcpu)) {
 			__vcpu_sys_reg(vcpu, ZCR_EL1) = read_sysreg_el1(SYS_ZCR);

[PATCH 6.6 68/77] KVM: arm64: Refactor exit handlers

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Mark Rutland <mark.rutland@arm.com>

[ Upstream commit 9b66195063c5a145843547b1d692bd189be85287 ]

The hyp exit handling logic is largely shared between VHE and nVHE/hVHE,
with common logic in arch/arm64/kvm/hyp/include/hyp/switch.h. The code
in the header depends on function definitions provided by
arch/arm64/kvm/hyp/vhe/switch.c and arch/arm64/kvm/hyp/nvhe/switch.c
when they include the header.

This is an unusual header dependency, and prevents the use of
arch/arm64/kvm/hyp/include/hyp/switch.h in other files as this would
result in compiler warnings regarding missing definitions, e.g.

| In file included from arch/arm64/kvm/hyp/nvhe/hyp-main.c:8:
| ./arch/arm64/kvm/hyp/include/hyp/switch.h:733:31: warning: 'kvm_get_exit_handler_array' used but never defined
|   733 | static const exit_handler_fn *kvm_get_exit_handler_array(struct kvm_vcpu *vcpu);
|       |                               ^~~~~~~~~~~~~~~~~~~~~~~~~~
| ./arch/arm64/kvm/hyp/include/hyp/switch.h:735:13: warning: 'early_exit_filter' used but never defined
|   735 | static void early_exit_filter(struct kvm_vcpu *vcpu, u64 *exit_code);
|       |             ^~~~~~~~~~~~~~~~~

Refactor the logic such that the header doesn't depend on anything from
the C files. There should be no functional change as a result of this
patch.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Tested-by: Mark Brown <broonie@kernel.org>
Acked-by: Will Deacon <will@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Fuad Tabba <tabba@google.com>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Oliver Upton <oliver.upton@linux.dev>
Reviewed-by: Oliver Upton <oliver.upton@linux.dev>
Link: https://lore.kernel.org/r/20250210195226.1215254-7-mark.rutland@arm.com
Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/arm64/kvm/hyp/include/hyp/switch.h |   30 ++++++------------------------
 arch/arm64/kvm/hyp/nvhe/switch.c        |   27 +++++++++++++++------------
 arch/arm64/kvm/hyp/vhe/switch.c         |    9 ++++-----
 3 files changed, 25 insertions(+), 41 deletions(-)

--- a/arch/arm64/kvm/hyp/include/hyp/switch.h
+++ b/arch/arm64/kvm/hyp/include/hyp/switch.h
@@ -592,23 +592,16 @@ static bool kvm_hyp_handle_dabt_low(stru
 
 typedef bool (*exit_handler_fn)(struct kvm_vcpu *, u64 *);
 
-static const exit_handler_fn *kvm_get_exit_handler_array(struct kvm_vcpu *vcpu);
-
-static void early_exit_filter(struct kvm_vcpu *vcpu, u64 *exit_code);
-
 /*
  * Allow the hypervisor to handle the exit with an exit handler if it has one.
  *
  * Returns true if the hypervisor handled the exit, and control should go back
  * to the guest, or false if it hasn't.
  */
-static inline bool kvm_hyp_handle_exit(struct kvm_vcpu *vcpu, u64 *exit_code)
+static inline bool kvm_hyp_handle_exit(struct kvm_vcpu *vcpu, u64 *exit_code,
+				       const exit_handler_fn *handlers)
 {
-	const exit_handler_fn *handlers = kvm_get_exit_handler_array(vcpu);
-	exit_handler_fn fn;
-
-	fn = handlers[kvm_vcpu_trap_get_class(vcpu)];
-
+	exit_handler_fn fn = handlers[kvm_vcpu_trap_get_class(vcpu)];
 	if (fn)
 		return fn(vcpu, exit_code);
 
@@ -638,20 +631,9 @@ static inline void synchronize_vcpu_psta
  * the guest, false when we should restore the host state and return to the
  * main run loop.
  */
-static inline bool fixup_guest_exit(struct kvm_vcpu *vcpu, u64 *exit_code)
+static inline bool __fixup_guest_exit(struct kvm_vcpu *vcpu, u64 *exit_code,
+				      const exit_handler_fn *handlers)
 {
-	/*
-	 * Save PSTATE early so that we can evaluate the vcpu mode
-	 * early on.
-	 */
-	synchronize_vcpu_pstate(vcpu, exit_code);
-
-	/*
-	 * Check whether we want to repaint the state one way or
-	 * another.
-	 */
-	early_exit_filter(vcpu, exit_code);
-
 	if (ARM_EXCEPTION_CODE(*exit_code) != ARM_EXCEPTION_IRQ)
 		vcpu->arch.fault.esr_el2 = read_sysreg_el2(SYS_ESR);
 
@@ -681,7 +663,7 @@ static inline bool fixup_guest_exit(stru
 		goto exit;
 
 	/* Check if there's an exit handler and allow it to handle the exit. */
-	if (kvm_hyp_handle_exit(vcpu, exit_code))
+	if (kvm_hyp_handle_exit(vcpu, exit_code, handlers))
 		goto guest;
 exit:
 	/* Return to the host kernel and handle the exit */
--- a/arch/arm64/kvm/hyp/nvhe/switch.c
+++ b/arch/arm64/kvm/hyp/nvhe/switch.c
@@ -225,21 +225,22 @@ static const exit_handler_fn *kvm_get_ex
 	return hyp_exit_handlers;
 }
 
-/*
- * Some guests (e.g., protected VMs) are not be allowed to run in AArch32.
- * The ARMv8 architecture does not give the hypervisor a mechanism to prevent a
- * guest from dropping to AArch32 EL0 if implemented by the CPU. If the
- * hypervisor spots a guest in such a state ensure it is handled, and don't
- * trust the host to spot or fix it.  The check below is based on the one in
- * kvm_arch_vcpu_ioctl_run().
- *
- * Returns false if the guest ran in AArch32 when it shouldn't have, and
- * thus should exit to the host, or true if a the guest run loop can continue.
- */
-static void early_exit_filter(struct kvm_vcpu *vcpu, u64 *exit_code)
+static inline bool fixup_guest_exit(struct kvm_vcpu *vcpu, u64 *exit_code)
 {
+	const exit_handler_fn *handlers = kvm_get_exit_handler_array(vcpu);
 	struct kvm *kvm = kern_hyp_va(vcpu->kvm);
 
+	synchronize_vcpu_pstate(vcpu, exit_code);
+
+	/*
+	 * Some guests (e.g., protected VMs) are not be allowed to run in
+	 * AArch32.  The ARMv8 architecture does not give the hypervisor a
+	 * mechanism to prevent a guest from dropping to AArch32 EL0 if
+	 * implemented by the CPU. If the hypervisor spots a guest in such a
+	 * state ensure it is handled, and don't trust the host to spot or fix
+	 * it.  The check below is based on the one in
+	 * kvm_arch_vcpu_ioctl_run().
+	 */
 	if (kvm_vm_is_protected(kvm) && vcpu_mode_is_32bit(vcpu)) {
 		/*
 		 * As we have caught the guest red-handed, decide that it isn't
@@ -252,6 +253,8 @@ static void early_exit_filter(struct kvm
 		*exit_code &= BIT(ARM_EXIT_WITH_SERROR_BIT);
 		*exit_code |= ARM_EXCEPTION_IL;
 	}
+
+	return __fixup_guest_exit(vcpu, exit_code, handlers);
 }
 
 /* Switch to the guest for legacy non-VHE systems */
--- a/arch/arm64/kvm/hyp/vhe/switch.c
+++ b/arch/arm64/kvm/hyp/vhe/switch.c
@@ -172,13 +172,10 @@ static const exit_handler_fn hyp_exit_ha
 	[ESR_ELx_EC_PAC]		= kvm_hyp_handle_ptrauth,
 };
 
-static const exit_handler_fn *kvm_get_exit_handler_array(struct kvm_vcpu *vcpu)
+static inline bool fixup_guest_exit(struct kvm_vcpu *vcpu, u64 *exit_code)
 {
-	return hyp_exit_handlers;
-}
+	synchronize_vcpu_pstate(vcpu, exit_code);
 
-static void early_exit_filter(struct kvm_vcpu *vcpu, u64 *exit_code)
-{
 	/*
 	 * If we were in HYP context on entry, adjust the PSTATE view
 	 * so that the usual helpers work correctly.
@@ -198,6 +195,8 @@ static void early_exit_filter(struct kvm
 		*vcpu_cpsr(vcpu) &= ~(PSR_MODE_MASK | PSR_MODE32_BIT);
 		*vcpu_cpsr(vcpu) |= mode;
 	}
+
+	return __fixup_guest_exit(vcpu, exit_code, hyp_exit_handlers);
 }
 
 /* Switch to the guest for VHE systems running in EL2 */

[PATCH 6.6 69/77] KVM: arm64: Mark some header functions as inline

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Mark Rutland <mark.rutland@arm.com>

[ Upstream commit f9dd00de1e53a47763dfad601635d18542c3836d ]

The shared hyp switch header has a number of static functions which
might not be used by all files that include the header, and when unused
they will provoke compiler warnings, e.g.

| In file included from arch/arm64/kvm/hyp/nvhe/hyp-main.c:8:
| ./arch/arm64/kvm/hyp/include/hyp/switch.h:703:13: warning: 'kvm_hyp_handle_dabt_low' defined but not used [-Wunused-function]
|   703 | static bool kvm_hyp_handle_dabt_low(struct kvm_vcpu *vcpu, u64 *exit_code)
|       |             ^~~~~~~~~~~~~~~~~~~~~~~
| ./arch/arm64/kvm/hyp/include/hyp/switch.h:682:13: warning: 'kvm_hyp_handle_cp15_32' defined but not used [-Wunused-function]
|   682 | static bool kvm_hyp_handle_cp15_32(struct kvm_vcpu *vcpu, u64 *exit_code)
|       |             ^~~~~~~~~~~~~~~~~~~~~~
| ./arch/arm64/kvm/hyp/include/hyp/switch.h:662:13: warning: 'kvm_hyp_handle_sysreg' defined but not used [-Wunused-function]
|   662 | static bool kvm_hyp_handle_sysreg(struct kvm_vcpu *vcpu, u64 *exit_code)
|       |             ^~~~~~~~~~~~~~~~~~~~~
| ./arch/arm64/kvm/hyp/include/hyp/switch.h:458:13: warning: 'kvm_hyp_handle_fpsimd' defined but not used [-Wunused-function]
|   458 | static bool kvm_hyp_handle_fpsimd(struct kvm_vcpu *vcpu, u64 *exit_code)
|       |             ^~~~~~~~~~~~~~~~~~~~~
| ./arch/arm64/kvm/hyp/include/hyp/switch.h:329:13: warning: 'kvm_hyp_handle_mops' defined but not used [-Wunused-function]
|   329 | static bool kvm_hyp_handle_mops(struct kvm_vcpu *vcpu, u64 *exit_code)
|       |             ^~~~~~~~~~~~~~~~~~~

Mark these functions as 'inline' to suppress this warning. This
shouldn't result in any functional change.

At the same time, avoid the use of __alias() in the header and alias
kvm_hyp_handle_iabt_low() and kvm_hyp_handle_watchpt_low() to
kvm_hyp_handle_memory_fault() using CPP, matching the style in the rest
of the kernel. For consistency, kvm_hyp_handle_memory_fault() is also
marked as 'inline'.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Tested-by: Mark Brown <broonie@kernel.org>
Acked-by: Will Deacon <will@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Fuad Tabba <tabba@google.com>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Oliver Upton <oliver.upton@linux.dev>
Reviewed-by: Oliver Upton <oliver.upton@linux.dev>
Link: https://lore.kernel.org/r/20250210195226.1215254-8-mark.rutland@arm.com
Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/arm64/kvm/hyp/include/hyp/switch.h |   17 ++++++++---------
 1 file changed, 8 insertions(+), 9 deletions(-)

--- a/arch/arm64/kvm/hyp/include/hyp/switch.h
+++ b/arch/arm64/kvm/hyp/include/hyp/switch.h
@@ -279,7 +279,7 @@ static inline void __hyp_sve_restore_gue
  * If FP/SIMD is not implemented, handle the trap and inject an undefined
  * instruction exception to the guest. Similarly for trapped SVE accesses.
  */
-static bool kvm_hyp_handle_fpsimd(struct kvm_vcpu *vcpu, u64 *exit_code)
+static inline bool kvm_hyp_handle_fpsimd(struct kvm_vcpu *vcpu, u64 *exit_code)
 {
 	bool sve_guest;
 	u8 esr_ec;
@@ -518,7 +518,7 @@ static bool handle_ampere1_tcr(struct kv
 	return true;
 }
 
-static bool kvm_hyp_handle_sysreg(struct kvm_vcpu *vcpu, u64 *exit_code)
+static inline bool kvm_hyp_handle_sysreg(struct kvm_vcpu *vcpu, u64 *exit_code)
 {
 	if (cpus_have_final_cap(ARM64_WORKAROUND_CAVIUM_TX2_219_TVM) &&
 	    handle_tx2_tvm(vcpu))
@@ -541,7 +541,7 @@ static bool kvm_hyp_handle_sysreg(struct
 	return false;
 }
 
-static bool kvm_hyp_handle_cp15_32(struct kvm_vcpu *vcpu, u64 *exit_code)
+static inline bool kvm_hyp_handle_cp15_32(struct kvm_vcpu *vcpu, u64 *exit_code)
 {
 	if (static_branch_unlikely(&vgic_v3_cpuif_trap) &&
 	    __vgic_v3_perform_cpuif_access(vcpu) == 1)
@@ -550,19 +550,18 @@ static bool kvm_hyp_handle_cp15_32(struc
 	return false;
 }
 
-static bool kvm_hyp_handle_memory_fault(struct kvm_vcpu *vcpu, u64 *exit_code)
+static inline bool kvm_hyp_handle_memory_fault(struct kvm_vcpu *vcpu,
+					       u64 *exit_code)
 {
 	if (!__populate_fault_info(vcpu))
 		return true;
 
 	return false;
 }
-static bool kvm_hyp_handle_iabt_low(struct kvm_vcpu *vcpu, u64 *exit_code)
-	__alias(kvm_hyp_handle_memory_fault);
-static bool kvm_hyp_handle_watchpt_low(struct kvm_vcpu *vcpu, u64 *exit_code)
-	__alias(kvm_hyp_handle_memory_fault);
+#define kvm_hyp_handle_iabt_low		kvm_hyp_handle_memory_fault
+#define kvm_hyp_handle_watchpt_low	kvm_hyp_handle_memory_fault
 
-static bool kvm_hyp_handle_dabt_low(struct kvm_vcpu *vcpu, u64 *exit_code)
+static inline bool kvm_hyp_handle_dabt_low(struct kvm_vcpu *vcpu, u64 *exit_code)
 {
 	if (kvm_hyp_handle_memory_fault(vcpu, exit_code))
 		return true;

[PATCH 6.6 70/77] KVM: arm64: Eagerly switch ZCR_EL{1,2}

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Mark Rutland <mark.rutland@arm.com>

[ Upstream commit 59419f10045bc955d2229819c7cf7a8b0b9c5b59 ]

In non-protected KVM modes, while the guest FPSIMD/SVE/SME state is live on the
CPU, the host's active SVE VL may differ from the guest's maximum SVE VL:

* For VHE hosts, when a VM uses NV, ZCR_EL2 contains a value constrained
  by the guest hypervisor, which may be less than or equal to that
  guest's maximum VL.

  Note: in this case the value of ZCR_EL1 is immaterial due to E2H.

* For nVHE/hVHE hosts, ZCR_EL1 contains a value written by the guest,
  which may be less than or greater than the guest's maximum VL.

  Note: in this case hyp code traps host SVE usage and lazily restores
  ZCR_EL2 to the host's maximum VL, which may be greater than the
  guest's maximum VL.

This can be the case between exiting a guest and kvm_arch_vcpu_put_fp().
If a softirq is taken during this period and the softirq handler tries
to use kernel-mode NEON, then the kernel will fail to save the guest's
FPSIMD/SVE state, and will pend a SIGKILL for the current thread.

This happens because kvm_arch_vcpu_ctxsync_fp() binds the guest's live
FPSIMD/SVE state with the guest's maximum SVE VL, and
fpsimd_save_user_state() verifies that the live SVE VL is as expected
before attempting to save the register state:

| if (WARN_ON(sve_get_vl() != vl)) {
|         force_signal_inject(SIGKILL, SI_KERNEL, 0, 0);
|         return;
| }

Fix this and make this a bit easier to reason about by always eagerly
switching ZCR_EL{1,2} at hyp during guest<->host transitions. With this
happening, there's no need to trap host SVE usage, and the nVHE/nVHE
__deactivate_cptr_traps() logic can be simplified to enable host access
to all present FPSIMD/SVE/SME features.

In protected nVHE/hVHE modes, the host's state is always saved/restored
by hyp, and the guest's state is saved prior to exit to the host, so
from the host's PoV the guest never has live FPSIMD/SVE/SME state, and
the host's ZCR_EL1 is never clobbered by hyp.

Fixes: 8c8010d69c132273 ("KVM: arm64: Save/restore SVE state for nVHE")
Fixes: 2e3cf82063a00ea0 ("KVM: arm64: nv: Ensure correct VL is loaded before saving SVE state")
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Tested-by: Mark Brown <broonie@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Fuad Tabba <tabba@google.com>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Oliver Upton <oliver.upton@linux.dev>
Cc: Will Deacon <will@kernel.org>
Reviewed-by: Oliver Upton <oliver.upton@linux.dev>
Link: https://lore.kernel.org/r/20250210195226.1215254-9-mark.rutland@arm.com
Signed-off-by: Marc Zyngier <maz@kernel.org>
[ v6.6 lacks pKVM saving of host SVE state, pull in discovery of maximum
  host VL separately -- broonie ]
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/arm64/include/asm/kvm_host.h       |    1 
 arch/arm64/include/asm/kvm_hyp.h        |    1 
 arch/arm64/kvm/fpsimd.c                 |   19 +++++------
 arch/arm64/kvm/hyp/entry.S              |    5 ++
 arch/arm64/kvm/hyp/include/hyp/switch.h |   55 ++++++++++++++++++++++++++++++++
 arch/arm64/kvm/hyp/nvhe/hyp-main.c      |   12 +-----
 arch/arm64/kvm/hyp/nvhe/pkvm.c          |    2 +
 arch/arm64/kvm/hyp/nvhe/switch.c        |   33 ++++++++++++++++---
 arch/arm64/kvm/hyp/vhe/switch.c         |    4 ++
 arch/arm64/kvm/reset.c                  |    3 +
 10 files changed, 113 insertions(+), 22 deletions(-)

--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -73,6 +73,7 @@ static inline enum kvm_mode kvm_get_mode
 #endif
 
 extern unsigned int __ro_after_init kvm_sve_max_vl;
+extern unsigned int __ro_after_init kvm_host_sve_max_vl;
 int __init kvm_arm_init_sve(void);
 
 u32 __attribute_const__ kvm_target_cpu(void);
--- a/arch/arm64/include/asm/kvm_hyp.h
+++ b/arch/arm64/include/asm/kvm_hyp.h
@@ -145,5 +145,6 @@ extern u64 kvm_nvhe_sym(id_aa64smfr0_el1
 
 extern unsigned long kvm_nvhe_sym(__icache_flags);
 extern unsigned int kvm_nvhe_sym(kvm_arm_vmid_bits);
+extern unsigned int kvm_nvhe_sym(kvm_host_sve_max_vl);
 
 #endif /* __ARM64_KVM_HYP_H__ */
--- a/arch/arm64/kvm/fpsimd.c
+++ b/arch/arm64/kvm/fpsimd.c
@@ -152,15 +152,16 @@ void kvm_arch_vcpu_put_fp(struct kvm_vcp
 	local_irq_save(flags);
 
 	if (vcpu->arch.fp_state == FP_STATE_GUEST_OWNED) {
-		if (vcpu_has_sve(vcpu)) {
-			__vcpu_sys_reg(vcpu, ZCR_EL1) = read_sysreg_el1(SYS_ZCR);
-
-			/* Restore the VL that was saved when bound to the CPU */
-			if (!has_vhe())
-				sve_cond_update_zcr_vq(vcpu_sve_max_vq(vcpu) - 1,
-						       SYS_ZCR_EL1);
-		}
-
+		/*
+		 * Flush (save and invalidate) the fpsimd/sve state so that if
+		 * the host tries to use fpsimd/sve, it's not using stale data
+		 * from the guest.
+		 *
+		 * Flushing the state sets the TIF_FOREIGN_FPSTATE bit for the
+		 * context unconditionally, in both nVHE and VHE. This allows
+		 * the kernel to restore the fpsimd/sve state, including ZCR_EL1
+		 * when needed.
+		 */
 		fpsimd_save_and_flush_cpu_state();
 	}
 
--- a/arch/arm64/kvm/hyp/entry.S
+++ b/arch/arm64/kvm/hyp/entry.S
@@ -44,6 +44,11 @@ alternative_if ARM64_HAS_RAS_EXTN
 alternative_else_nop_endif
 	mrs	x1, isr_el1
 	cbz	x1,  1f
+
+	// Ensure that __guest_enter() always provides a context
+	// synchronization event so that callers don't need ISBs for anything
+	// that would usually be synchonized by the ERET.
+	isb
 	mov	x0, #ARM_EXCEPTION_IRQ
 	ret
 
--- a/arch/arm64/kvm/hyp/include/hyp/switch.h
+++ b/arch/arm64/kvm/hyp/include/hyp/switch.h
@@ -273,6 +273,61 @@ static inline void __hyp_sve_restore_gue
 	write_sysreg_el1(__vcpu_sys_reg(vcpu, ZCR_EL1), SYS_ZCR);
 }
 
+static inline void fpsimd_lazy_switch_to_guest(struct kvm_vcpu *vcpu)
+{
+	u64 zcr_el1, zcr_el2;
+
+	if (!guest_owns_fp_regs(vcpu))
+		return;
+
+	if (vcpu_has_sve(vcpu)) {
+		zcr_el2 = vcpu_sve_max_vq(vcpu) - 1;
+
+		write_sysreg_el2(zcr_el2, SYS_ZCR);
+
+		zcr_el1 = __vcpu_sys_reg(vcpu, ZCR_EL1);
+		write_sysreg_el1(zcr_el1, SYS_ZCR);
+	}
+}
+
+static inline void fpsimd_lazy_switch_to_host(struct kvm_vcpu *vcpu)
+{
+	u64 zcr_el1, zcr_el2;
+
+	if (!guest_owns_fp_regs(vcpu))
+		return;
+
+	/*
+	 * When the guest owns the FP regs, we know that guest+hyp traps for
+	 * any FPSIMD/SVE/SME features exposed to the guest have been disabled
+	 * by either fpsimd_lazy_switch_to_guest() or kvm_hyp_handle_fpsimd()
+	 * prior to __guest_entry(). As __guest_entry() guarantees a context
+	 * synchronization event, we don't need an ISB here to avoid taking
+	 * traps for anything that was exposed to the guest.
+	 */
+	if (vcpu_has_sve(vcpu)) {
+		zcr_el1 = read_sysreg_el1(SYS_ZCR);
+		__vcpu_sys_reg(vcpu, ZCR_EL1) = zcr_el1;
+
+		/*
+		 * The guest's state is always saved using the guest's max VL.
+		 * Ensure that the host has the guest's max VL active such that
+		 * the host can save the guest's state lazily, but don't
+		 * artificially restrict the host to the guest's max VL.
+		 */
+		if (has_vhe()) {
+			zcr_el2 = vcpu_sve_max_vq(vcpu) - 1;
+			write_sysreg_el2(zcr_el2, SYS_ZCR);
+		} else {
+			zcr_el2 = sve_vq_from_vl(kvm_host_sve_max_vl) - 1;
+			write_sysreg_el2(zcr_el2, SYS_ZCR);
+
+			zcr_el1 = vcpu_sve_max_vq(vcpu) - 1;
+			write_sysreg_el1(zcr_el1, SYS_ZCR);
+		}
+	}
+}
+
 /*
  * We trap the first access to the FP/SIMD to save the host context and
  * restore the guest context lazily.
--- a/arch/arm64/kvm/hyp/nvhe/hyp-main.c
+++ b/arch/arm64/kvm/hyp/nvhe/hyp-main.c
@@ -5,6 +5,7 @@
  */
 
 #include <hyp/adjust_pc.h>
+#include <hyp/switch.h>
 
 #include <asm/pgtable-types.h>
 #include <asm/kvm_asm.h>
@@ -95,7 +96,9 @@ static void handle___kvm_vcpu_run(struct
 		pkvm_put_hyp_vcpu(hyp_vcpu);
 	} else {
 		/* The host is fully trusted, run its vCPU directly. */
+		fpsimd_lazy_switch_to_guest(host_vcpu);
 		ret = __kvm_vcpu_run(host_vcpu);
+		fpsimd_lazy_switch_to_host(host_vcpu);
 	}
 
 out:
@@ -416,15 +419,6 @@ void handle_trap(struct kvm_cpu_context
 	case ESR_ELx_EC_SMC64:
 		handle_host_smc(host_ctxt);
 		break;
-	case ESR_ELx_EC_SVE:
-		if (has_hvhe())
-			sysreg_clear_set(cpacr_el1, 0, (CPACR_EL1_ZEN_EL1EN |
-							CPACR_EL1_ZEN_EL0EN));
-		else
-			sysreg_clear_set(cptr_el2, CPTR_EL2_TZ, 0);
-		isb();
-		sve_cond_update_zcr_vq(ZCR_ELx_LEN_MASK, SYS_ZCR_EL2);
-		break;
 	case ESR_ELx_EC_IABT_LOW:
 	case ESR_ELx_EC_DABT_LOW:
 		handle_host_mem_abort(host_ctxt);
--- a/arch/arm64/kvm/hyp/nvhe/pkvm.c
+++ b/arch/arm64/kvm/hyp/nvhe/pkvm.c
@@ -18,6 +18,8 @@ unsigned long __icache_flags;
 /* Used by kvm_get_vttbr(). */
 unsigned int kvm_arm_vmid_bits;
 
+unsigned int kvm_host_sve_max_vl;
+
 /*
  * Set trap register values based on features in ID_AA64PFR0.
  */
--- a/arch/arm64/kvm/hyp/nvhe/switch.c
+++ b/arch/arm64/kvm/hyp/nvhe/switch.c
@@ -40,6 +40,9 @@ static void __activate_cptr_traps(struct
 {
 	u64 val = CPTR_EL2_TAM;	/* Same bit irrespective of E2H */
 
+	if (!guest_owns_fp_regs(vcpu))
+		__activate_traps_fpsimd32(vcpu);
+
 	if (has_hvhe()) {
 		val |= CPACR_ELx_TTA;
 
@@ -48,6 +51,8 @@ static void __activate_cptr_traps(struct
 			if (vcpu_has_sve(vcpu))
 				val |= CPACR_ELx_ZEN;
 		}
+
+		write_sysreg(val, cpacr_el1);
 	} else {
 		val |= CPTR_EL2_TTA | CPTR_NVHE_EL2_RES1;
 
@@ -62,12 +67,32 @@ static void __activate_cptr_traps(struct
 
 		if (!guest_owns_fp_regs(vcpu))
 			val |= CPTR_EL2_TFP;
+
+		write_sysreg(val, cptr_el2);
 	}
+}
 
-	if (!guest_owns_fp_regs(vcpu))
-		__activate_traps_fpsimd32(vcpu);
+static void __deactivate_cptr_traps(struct kvm_vcpu *vcpu)
+{
+	if (has_hvhe()) {
+		u64 val = CPACR_ELx_FPEN;
+
+		if (cpus_have_final_cap(ARM64_SVE))
+			val |= CPACR_ELx_ZEN;
+		if (cpus_have_final_cap(ARM64_SME))
+			val |= CPACR_ELx_SMEN;
+
+		write_sysreg(val, cpacr_el1);
+	} else {
+		u64 val = CPTR_NVHE_EL2_RES1;
+
+		if (!cpus_have_final_cap(ARM64_SVE))
+			val |= CPTR_EL2_TZ;
+		if (!cpus_have_final_cap(ARM64_SME))
+			val |= CPTR_EL2_TSM;
 
-	kvm_write_cptr_el2(val);
+		write_sysreg(val, cptr_el2);
+	}
 }
 
 static void __activate_traps(struct kvm_vcpu *vcpu)
@@ -120,7 +145,7 @@ static void __deactivate_traps(struct kv
 
 	write_sysreg(this_cpu_ptr(&kvm_init_params)->hcr_el2, hcr_el2);
 
-	kvm_reset_cptr_el2(vcpu);
+	__deactivate_cptr_traps(vcpu);
 	write_sysreg(__kvm_hyp_host_vector, vbar_el2);
 }
 
--- a/arch/arm64/kvm/hyp/vhe/switch.c
+++ b/arch/arm64/kvm/hyp/vhe/switch.c
@@ -212,6 +212,8 @@ static int __kvm_vcpu_run_vhe(struct kvm
 
 	sysreg_save_host_state_vhe(host_ctxt);
 
+	fpsimd_lazy_switch_to_guest(vcpu);
+
 	/*
 	 * ARM erratum 1165522 requires us to configure both stage 1 and
 	 * stage 2 translation for the guest context before we clear
@@ -247,6 +249,8 @@ static int __kvm_vcpu_run_vhe(struct kvm
 
 	__deactivate_traps(vcpu);
 
+	fpsimd_lazy_switch_to_host(vcpu);
+
 	sysreg_restore_host_state_vhe(host_ctxt);
 
 	if (vcpu->arch.fp_state == FP_STATE_GUEST_OWNED)
--- a/arch/arm64/kvm/reset.c
+++ b/arch/arm64/kvm/reset.c
@@ -46,11 +46,14 @@ static u32 __ro_after_init kvm_ipa_limit
 				 PSR_AA32_I_BIT | PSR_AA32_F_BIT)
 
 unsigned int __ro_after_init kvm_sve_max_vl;
+unsigned int __ro_after_init kvm_host_sve_max_vl;
 
 int __init kvm_arm_init_sve(void)
 {
 	if (system_supports_sve()) {
 		kvm_sve_max_vl = sve_max_virtualisable_vl();
+		kvm_host_sve_max_vl = sve_max_vl();
+		kvm_nvhe_sym(kvm_host_sve_max_vl) = kvm_host_sve_max_vl;
 
 		/*
 		 * The get_sve_reg()/set_sve_reg() ioctl interface will need

[PATCH 6.6 71/77] arm64: dts: rockchip: fix u2phy1_host status for NanoPi R4S

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Justin Klaassen <justin@tidylabs.net>

commit 38f4aa34a5f737ea8588dac320d884cc2e762c03 upstream.

The u2phy1_host should always have the same status as usb_host1_ehci
and usb_host1_ohci, otherwise the EHCI and OHCI drivers may be
initialized for a disabled usb port.

Per the NanoPi R4S schematic, the phy-supply for u2phy1_host is set to
the vdd_5v regulator.

Fixes: db792e9adbf8 ("rockchip: rk3399: Add support for FriendlyARM NanoPi R4S")
Cc: stable@vger.kernel.org
Signed-off-by: Justin Klaassen <justin@tidylabs.net>
Reviewed-by: Dragan Simic <dsimic@manjaro.org>
Link: https://lore.kernel.org/r/20250225170420.3898-1-justin@tidylabs.net
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dts |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dts
@@ -117,7 +117,7 @@
 };
 
 &u2phy1_host {
-	status = "disabled";
+	phy-supply = <&vdd_5v>;
 };
 
 &uart0 {

[PATCH 6.6 72/77] Revert "sched/core: Reduce cost of sched_move_task when config autogroup"

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Dietmar Eggemann <dietmar.eggemann@arm.com>

commit 76f970ce51c80f625eb6ddbb24e9cb51b977b598 upstream.

This reverts commit eff6c8ce8d4d7faef75f66614dd20bb50595d261.

Hazem reported a 30% drop in UnixBench spawn test with commit
eff6c8ce8d4d ("sched/core: Reduce cost of sched_move_task when config
autogroup") on a m6g.xlarge AWS EC2 instance with 4 vCPUs and 16 GiB RAM
(aarch64) (single level MC sched domain):

  https://lkml.kernel.org/r/20250205151026.13061-1-hagarhem@amazon.com

There is an early bail from sched_move_task() if p->sched_task_group is
equal to p's 'cpu cgroup' (sched_get_task_group()). E.g. both are
pointing to taskgroup '/user.slice/user-1000.slice/session-1.scope'
(Ubuntu '22.04.5 LTS').

So in:

  do_exit()

    sched_autogroup_exit_task()

      sched_move_task()

        if sched_get_task_group(p) == p->sched_task_group
          return

        /* p is enqueued */
        dequeue_task()              \
        sched_change_group()        |
          task_change_group_fair()  |
            detach_task_cfs_rq()    |                              (1)
            set_task_rq()           |
            attach_task_cfs_rq()    |
        enqueue_task()              /

(1) isn't called for p anymore.

Turns out that the regression is related to sgs->group_util in
group_is_overloaded() and group_has_capacity(). If (1) isn't called for
all the 'spawn' tasks then sgs->group_util is ~900 and
sgs->group_capacity = 1024 (single CPU sched domain) and this leads to
group_is_overloaded() returning true (2) and group_has_capacity() false
(3) much more often compared to the case when (1) is called.

I.e. there are much more cases of 'group_is_overloaded' and
'group_fully_busy' in WF_FORK wakeup sched_balance_find_dst_cpu() which
then returns much more often a CPU != smp_processor_id() (5).

This isn't good for these extremely short running tasks (FORK + EXIT)
and also involves calling sched_balance_find_dst_group_cpu() unnecessary
(single CPU sched domain).

Instead if (1) is called for 'p->flags & PF_EXITING' then the path
(4),(6) is taken much more often.

  select_task_rq_fair(..., wake_flags = WF_FORK)

    cpu = smp_processor_id()

    new_cpu = sched_balance_find_dst_cpu(..., cpu, ...)

      group = sched_balance_find_dst_group(..., cpu)

        do {

          update_sg_wakeup_stats()

            sgs->group_type = group_classify()

              if group_is_overloaded()                             (2)
                return group_overloaded

              if !group_has_capacity()                             (3)
                return group_fully_busy

              return group_has_spare                               (4)

        } while group

        if local_sgs.group_type > idlest_sgs.group_type
          return idlest                                            (5)

        case group_has_spare:

          if local_sgs.idle_cpus >= idlest_sgs.idle_cpus
            return NULL                                            (6)

Unixbench Tests './Run -c 4 spawn' on:

(a) VM AWS instance (m7gd.16xlarge) with v6.13 ('maxcpus=4 nr_cpus=4')
    and Ubuntu 22.04.5 LTS (aarch64).

    Shell & test run in '/user.slice/user-1000.slice/session-1.scope'.

    w/o patch	w/ patch
    21005	27120

(b) i7-13700K with tip/sched/core ('nosmt maxcpus=8 nr_cpus=8') and
    Ubuntu 22.04.5 LTS (x86_64).

    Shell & test run in '/A'.

    w/o patch	w/ patch
    67675	88806

CONFIG_SCHED_AUTOGROUP=y & /sys/proc/kernel/sched_autogroup_enabled equal
0 or 1.

Reported-by: Hazem Mohamed Abuelfotoh <abuehaze@amazon.com>
Signed-off-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Vincent Guittot <vincent.guittot@linaro.org>
Tested-by: Hagar Hemdan <hagarhem@amazon.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/r/20250314151345.275739-1-dietmar.eggemann@arm.com
[Hagar: clean revert of eff6c8ce8dd7 to make it work on 6.6]
Signed-off-by: Hagar Hemdan <hagarhem@amazon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 kernel/sched/core.c |   22 +++-------------------
 1 file changed, 3 insertions(+), 19 deletions(-)

--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -10494,7 +10494,7 @@ void sched_release_group(struct task_gro
 	spin_unlock_irqrestore(&task_group_lock, flags);
 }
 
-static struct task_group *sched_get_task_group(struct task_struct *tsk)
+static void sched_change_group(struct task_struct *tsk)
 {
 	struct task_group *tg;
 
@@ -10506,13 +10506,7 @@ static struct task_group *sched_get_task
 	tg = container_of(task_css_check(tsk, cpu_cgrp_id, true),
 			  struct task_group, css);
 	tg = autogroup_task_group(tsk, tg);
-
-	return tg;
-}
-
-static void sched_change_group(struct task_struct *tsk, struct task_group *group)
-{
-	tsk->sched_task_group = group;
+	tsk->sched_task_group = tg;
 
 #ifdef CONFIG_FAIR_GROUP_SCHED
 	if (tsk->sched_class->task_change_group)
@@ -10533,19 +10527,10 @@ void sched_move_task(struct task_struct
 {
 	int queued, running, queue_flags =
 		DEQUEUE_SAVE | DEQUEUE_MOVE | DEQUEUE_NOCLOCK;
-	struct task_group *group;
 	struct rq_flags rf;
 	struct rq *rq;
 
 	rq = task_rq_lock(tsk, &rf);
-	/*
-	 * Esp. with SCHED_AUTOGROUP enabled it is possible to get superfluous
-	 * group changes.
-	 */
-	group = sched_get_task_group(tsk);
-	if (group == tsk->sched_task_group)
-		goto unlock;
-
 	update_rq_clock(rq);
 
 	running = task_current(rq, tsk);
@@ -10556,7 +10541,7 @@ void sched_move_task(struct task_struct
 	if (running)
 		put_prev_task(rq, tsk);
 
-	sched_change_group(tsk, group);
+	sched_change_group(tsk);
 
 	if (queued)
 		enqueue_task(rq, tsk, queue_flags);
@@ -10570,7 +10555,6 @@ void sched_move_task(struct task_struct
 		resched_curr(rq);
 	}
 
-unlock:
 	task_rq_unlock(rq, tsk, &rf);
 }
 

[PATCH 6.6 73/77] btrfs: make sure that WRITTEN is set on all metadata blocks

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Josef Bacik <josef@toxicpanda.com>

commit e03418abde871314e1a3a550f4c8afb7b89cb273 upstream.

We previously would call btrfs_check_leaf() if we had the check
integrity code enabled, which meant that we could only run the extended
leaf checks if we had WRITTEN set on the header flags.

This leaves a gap in our checking, because we could end up with
corruption on disk where WRITTEN isn't set on the leaf, and then the
extended leaf checks don't get run which we rely on to validate all of
the item pointers to make sure we don't access memory outside of the
extent buffer.

However, since 732fab95abe2 ("btrfs: check-integrity: remove
CONFIG_BTRFS_FS_CHECK_INTEGRITY option") we no longer call
btrfs_check_leaf() from btrfs_mark_buffer_dirty(), which means we only
ever call it on blocks that are being written out, and thus have WRITTEN
set, or that are being read in, which should have WRITTEN set.

Add checks to make sure we have WRITTEN set appropriately, and then make
sure __btrfs_check_leaf() always does the item checking.  This will
protect us from file systems that have been corrupted and no longer have
WRITTEN set on some of the blocks.

This was hit on a crafted image tweaking the WRITTEN bit and reported by
KASAN as out-of-bound access in the eb accessors. The example is a dir
item at the end of an eb.

  [2.042] BTRFS warning (device loop1): bad eb member start: ptr 0x3fff start 30572544 member offset 16410 size 2
  [2.040] general protection fault, probably for non-canonical address 0xe0009d1000000003: 0000 [#1] PREEMPT SMP KASAN NOPTI
  [2.537] KASAN: maybe wild-memory-access in range [0x0005088000000018-0x000508800000001f]
  [2.729] CPU: 0 PID: 2587 Comm: mount Not tainted 6.8.2 #1
  [2.729] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014
  [2.621] RIP: 0010:btrfs_get_16+0x34b/0x6d0
  [2.621] RSP: 0018:ffff88810871fab8 EFLAGS: 00000206
  [2.621] RAX: 0000a11000000003 RBX: ffff888104ff8720 RCX: ffff88811b2288c0
  [2.621] RDX: dffffc0000000000 RSI: ffffffff81dd8aca RDI: ffff88810871f748
  [2.621] RBP: 000000000000401a R08: 0000000000000001 R09: ffffed10210e3ee9
  [2.621] R10: ffff88810871f74f R11: 205d323430333737 R12: 000000000000001a
  [2.621] R13: 000508800000001a R14: 1ffff110210e3f5d R15: ffffffff850011e8
  [2.621] FS:  00007f56ea275840(0000) GS:ffff88811b200000(0000) knlGS:0000000000000000
  [2.621] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  [2.621] CR2: 00007febd13b75c0 CR3: 000000010bb50000 CR4: 00000000000006f0
  [2.621] Call Trace:
  [2.621]  <TASK>
  [2.621]  ? show_regs+0x74/0x80
  [2.621]  ? die_addr+0x46/0xc0
  [2.621]  ? exc_general_protection+0x161/0x2a0
  [2.621]  ? asm_exc_general_protection+0x26/0x30
  [2.621]  ? btrfs_get_16+0x33a/0x6d0
  [2.621]  ? btrfs_get_16+0x34b/0x6d0
  [2.621]  ? btrfs_get_16+0x33a/0x6d0
  [2.621]  ? __pfx_btrfs_get_16+0x10/0x10
  [2.621]  ? __pfx_mutex_unlock+0x10/0x10
  [2.621]  btrfs_match_dir_item_name+0x101/0x1a0
  [2.621]  btrfs_lookup_dir_item+0x1f3/0x280
  [2.621]  ? __pfx_btrfs_lookup_dir_item+0x10/0x10
  [2.621]  btrfs_get_tree+0xd25/0x1910

Reported-by: lei lu <llfamsec@gmail.com>
CC: stable@vger.kernel.org # 6.7+
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
[ copy more details from report ]
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Jianqi Ren <jianqi.ren.cn@windriver.com>
Signed-off-by: He Zhe <zhe.he@windriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/btrfs/tree-checker.c |   30 +++++++++++++++---------------
 fs/btrfs/tree-checker.h |    1 +
 2 files changed, 16 insertions(+), 15 deletions(-)

--- a/fs/btrfs/tree-checker.c
+++ b/fs/btrfs/tree-checker.c
@@ -1889,6 +1889,11 @@ enum btrfs_tree_block_status __btrfs_che
 		return BTRFS_TREE_BLOCK_INVALID_LEVEL;
 	}
 
+	if (unlikely(!btrfs_header_flag(leaf, BTRFS_HEADER_FLAG_WRITTEN))) {
+		generic_err(leaf, 0, "invalid flag for leaf, WRITTEN not set");
+		return BTRFS_TREE_BLOCK_WRITTEN_NOT_SET;
+	}
+
 	/*
 	 * Extent buffers from a relocation tree have a owner field that
 	 * corresponds to the subvolume tree they are based on. So just from an
@@ -1950,6 +1955,7 @@ enum btrfs_tree_block_status __btrfs_che
 	for (slot = 0; slot < nritems; slot++) {
 		u32 item_end_expected;
 		u64 item_data_end;
+		enum btrfs_tree_block_status ret;
 
 		btrfs_item_key_to_cpu(leaf, &key, slot);
 
@@ -2005,21 +2011,10 @@ enum btrfs_tree_block_status __btrfs_che
 			return BTRFS_TREE_BLOCK_INVALID_OFFSETS;
 		}
 
-		/*
-		 * We only want to do this if WRITTEN is set, otherwise the leaf
-		 * may be in some intermediate state and won't appear valid.
-		 */
-		if (btrfs_header_flag(leaf, BTRFS_HEADER_FLAG_WRITTEN)) {
-			enum btrfs_tree_block_status ret;
-
-			/*
-			 * Check if the item size and content meet other
-			 * criteria
-			 */
-			ret = check_leaf_item(leaf, &key, slot, &prev_key);
-			if (unlikely(ret != BTRFS_TREE_BLOCK_CLEAN))
-				return ret;
-		}
+		/* Check if the item size and content meet other criteria. */
+		ret = check_leaf_item(leaf, &key, slot, &prev_key);
+		if (unlikely(ret != BTRFS_TREE_BLOCK_CLEAN))
+			return ret;
 
 		prev_key.objectid = key.objectid;
 		prev_key.type = key.type;
@@ -2049,6 +2044,11 @@ enum btrfs_tree_block_status __btrfs_che
 	int level = btrfs_header_level(node);
 	u64 bytenr;
 
+	if (unlikely(!btrfs_header_flag(node, BTRFS_HEADER_FLAG_WRITTEN))) {
+		generic_err(node, 0, "invalid flag for node, WRITTEN not set");
+		return BTRFS_TREE_BLOCK_WRITTEN_NOT_SET;
+	}
+
 	if (unlikely(level <= 0 || level >= BTRFS_MAX_LEVEL)) {
 		generic_err(node, 0,
 			"invalid level for node, have %d expect [1, %d]",
--- a/fs/btrfs/tree-checker.h
+++ b/fs/btrfs/tree-checker.h
@@ -51,6 +51,7 @@ enum btrfs_tree_block_status {
 	BTRFS_TREE_BLOCK_INVALID_BLOCKPTR,
 	BTRFS_TREE_BLOCK_INVALID_ITEM,
 	BTRFS_TREE_BLOCK_INVALID_OWNER,
+	BTRFS_TREE_BLOCK_WRITTEN_NOT_SET,
 };
 
 /*

[PATCH 6.6 74/77] bnxt_en: Fix receive ring space parameters when XDP is active

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Shravya KN <shravya.k-n@broadcom.com>

commit 3051a77a09dfe3022aa012071346937fdf059033 upstream.

The MTU setting at the time an XDP multi-buffer is attached
determines whether the aggregation ring will be used and the
rx_skb_func handler.  This is done in bnxt_set_rx_skb_mode().

If the MTU is later changed, the aggregation ring setting may need
to be changed and it may become out-of-sync with the settings
initially done in bnxt_set_rx_skb_mode().  This may result in
random memory corruption and crashes as the HW may DMA data larger
than the allocated buffer size, such as:

BUG: kernel NULL pointer dereference, address: 00000000000003c0
PGD 0 P4D 0
Oops: 0000 [#1] PREEMPT SMP NOPTI
CPU: 17 PID: 0 Comm: swapper/17 Kdump: loaded Tainted: G S         OE      6.1.0-226bf9805506 #1
Hardware name: Wiwynn Delta Lake PVT BZA.02601.0150/Delta Lake-Class1, BIOS F0E_3A12 08/26/2021
RIP: 0010:bnxt_rx_pkt+0xe97/0x1ae0 [bnxt_en]
Code: 8b 95 70 ff ff ff 4c 8b 9d 48 ff ff ff 66 41 89 87 b4 00 00 00 e9 0b f7 ff ff 0f b7 43 0a 49 8b 95 a8 04 00 00 25 ff 0f 00 00 <0f> b7 14 42 48 c1 e2 06 49 03 95 a0 04 00 00 0f b6 42 33f
RSP: 0018:ffffa19f40cc0d18 EFLAGS: 00010202
RAX: 00000000000001e0 RBX: ffff8e2c805c6100 RCX: 00000000000007ff
RDX: 0000000000000000 RSI: ffff8e2c271ab990 RDI: ffff8e2c84f12380
RBP: ffffa19f40cc0e48 R08: 000000000001000d R09: 974ea2fcddfa4cbf
R10: 0000000000000000 R11: ffffa19f40cc0ff8 R12: ffff8e2c94b58980
R13: ffff8e2c952d6600 R14: 0000000000000016 R15: ffff8e2c271ab990
FS:  0000000000000000(0000) GS:ffff8e3b3f840000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000000003c0 CR3: 0000000e8580a004 CR4: 00000000007706e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
PKRU: 55555554
Call Trace:
 <IRQ>
 __bnxt_poll_work+0x1c2/0x3e0 [bnxt_en]

To address the issue, we now call bnxt_set_rx_skb_mode() within
bnxt_change_mtu() to properly set the AGG rings configuration and
update rx_skb_func based on the new MTU value.
Additionally, BNXT_FLAG_NO_AGG_RINGS is cleared at the beginning of
bnxt_set_rx_skb_mode() to make sure it gets set or cleared based on
the current MTU.

Fixes: 08450ea98ae9 ("bnxt_en: Fix max_mtu setting for multi-buf XDP")
Co-developed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Shravya KN <shravya.k-n@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Jianqi Ren <jianqi.ren.cn@windriver.com>
Signed-off-by: He Zhe <zhe.he@windriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c |   10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -3987,7 +3987,7 @@ int bnxt_set_rx_skb_mode(struct bnxt *bp
 	struct net_device *dev = bp->dev;
 
 	if (page_mode) {
-		bp->flags &= ~BNXT_FLAG_AGG_RINGS;
+		bp->flags &= ~(BNXT_FLAG_AGG_RINGS | BNXT_FLAG_NO_AGG_RINGS);
 		bp->flags |= BNXT_FLAG_RX_PAGE_MODE;
 
 		if (bp->xdp_prog->aux->xdp_has_frags)
@@ -12796,6 +12796,14 @@ static int bnxt_change_mtu(struct net_de
 		bnxt_close_nic(bp, true, false);
 
 	dev->mtu = new_mtu;
+
+	/* MTU change may change the AGG ring settings if an XDP multi-buffer
+	 * program is attached.  We need to set the AGG rings settings and
+	 * rx_skb_func accordingly.
+	 */
+	if (READ_ONCE(bp->xdp_prog))
+		bnxt_set_rx_skb_mode(bp, true);
+
 	bnxt_set_ring_params(bp);
 
 	if (netif_running(dev))

[PATCH 6.6 75/77] wifi: iwlwifi: support BIOS override for 5G9 in CA also in LARI version 8

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Miri Korenblit <miriam.rachel.korenblit@intel.com>

commit b1e8102a4048003097c7054cbc00bbda91a5ced7 upstream.

Commit 6b3e87cc0ca5 ("iwlwifi: Add support for LARI_CONFIG_CHANGE_CMD
cmd v9")
added a few bits to iwl_lari_config_change_cmd::oem_unii4_allow_bitmap
if the FW has LARI version >= 9.
But we also need to send those bits for version 8 if the FW is capable
of this feature (indicated with capability bits)
Add the FW capability bit, and set the additional bits in the cmd when
the version is 8 and the FW capability bit is set.

Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Link: https://patch.msgid.link/20241226174257.dc5836f84514.I1e38f94465a36731034c94b9811de10cb6ee5921@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/wireless/intel/iwlwifi/fw/file.h |    4 ++
 drivers/net/wireless/intel/iwlwifi/mvm/fw.c  |   37 +++++++++++++++++++++++++--
 2 files changed, 38 insertions(+), 3 deletions(-)

--- a/drivers/net/wireless/intel/iwlwifi/fw/file.h
+++ b/drivers/net/wireless/intel/iwlwifi/fw/file.h
@@ -372,6 +372,8 @@ typedef unsigned int __bitwise iwl_ucode
  *      channels even when these are not enabled.
  * @IWL_UCODE_TLV_CAPA_DUMP_COMPLETE_SUPPORT: Support for indicating dump collection
  *	complete to FW.
+ * @IWL_UCODE_TLV_CAPA_BIOS_OVERRIDE_5G9_FOR_CA: supports (de)activating 5G9
+ *	for CA from BIOS.
  *
  * @NUM_IWL_UCODE_TLV_CAPA: number of bits used
  */
@@ -468,7 +470,7 @@ enum iwl_ucode_tlv_capa {
 	IWL_UCODE_TLV_CAPA_OFFLOAD_BTM_SUPPORT		= (__force iwl_ucode_tlv_capa_t)113,
 	IWL_UCODE_TLV_CAPA_STA_EXP_MFP_SUPPORT		= (__force iwl_ucode_tlv_capa_t)114,
 	IWL_UCODE_TLV_CAPA_SNIFF_VALIDATE_SUPPORT	= (__force iwl_ucode_tlv_capa_t)116,
-
+	IWL_UCODE_TLV_CAPA_BIOS_OVERRIDE_5G9_FOR_CA	= (__force iwl_ucode_tlv_capa_t)123,
 #ifdef __CHECKER__
 	/* sparse says it cannot increment the previous enum member */
 #define NUM_IWL_UCODE_TLV_CAPA 128
--- a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c
@@ -1195,11 +1195,30 @@ static u8 iwl_mvm_eval_dsm_rfi(struct iw
 	return DSM_VALUE_RFI_DISABLE;
 }
 
+enum iwl_dsm_unii4_bitmap {
+	DSM_VALUE_UNII4_US_OVERRIDE_MSK		= BIT(0),
+	DSM_VALUE_UNII4_US_EN_MSK		= BIT(1),
+	DSM_VALUE_UNII4_ETSI_OVERRIDE_MSK	= BIT(2),
+	DSM_VALUE_UNII4_ETSI_EN_MSK		= BIT(3),
+	DSM_VALUE_UNII4_CANADA_OVERRIDE_MSK	= BIT(4),
+	DSM_VALUE_UNII4_CANADA_EN_MSK		= BIT(5),
+};
+
+#define DSM_UNII4_ALLOW_BITMAP (DSM_VALUE_UNII4_US_OVERRIDE_MSK		|\
+				DSM_VALUE_UNII4_US_EN_MSK		|\
+				DSM_VALUE_UNII4_ETSI_OVERRIDE_MSK	|\
+				DSM_VALUE_UNII4_ETSI_EN_MSK		|\
+				DSM_VALUE_UNII4_CANADA_OVERRIDE_MSK	|\
+				DSM_VALUE_UNII4_CANADA_EN_MSK)
+
 static void iwl_mvm_lari_cfg(struct iwl_mvm *mvm)
 {
 	int ret;
 	u32 value;
 	struct iwl_lari_config_change_cmd_v6 cmd = {};
+	u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,
+					   WIDE_ID(REGULATORY_AND_NVM_GROUP,
+						   LARI_CONFIG_CHANGE), 1);
 
 	cmd.config_bitmap = iwl_acpi_get_lari_config_bitmap(&mvm->fwrt);
 
@@ -1211,8 +1230,22 @@ static void iwl_mvm_lari_cfg(struct iwl_
 	ret = iwl_acpi_get_dsm_u32(mvm->fwrt.dev, 0,
 				   DSM_FUNC_ENABLE_UNII4_CHAN,
 				   &iwl_guid, &value);
-	if (!ret)
-		cmd.oem_unii4_allow_bitmap = cpu_to_le32(value);
+	if (!ret) {
+		u32 _value = cpu_to_le32(value);
+
+		_value &= DSM_UNII4_ALLOW_BITMAP;
+
+		/* Since version 9, bits 4 and 5 are supported
+		 * regardless of this capability.
+		 */
+		if (cmd_ver < 9 &&
+		    !fw_has_capa(&mvm->fw->ucode_capa,
+				 IWL_UCODE_TLV_CAPA_BIOS_OVERRIDE_5G9_FOR_CA))
+			_value &= ~(DSM_VALUE_UNII4_CANADA_OVERRIDE_MSK |
+				   DSM_VALUE_UNII4_CANADA_EN_MSK);
+
+		cmd.oem_unii4_allow_bitmap = cpu_to_le32(_value);
+	}
 
 	ret = iwl_acpi_get_dsm_u32(mvm->fwrt.dev, 0,
 				   DSM_FUNC_ACTIVATE_CHANNEL,

[PATCH 6.6 76/77] wifi: iwlwifi: mvm: ensure offloading TID queue exists

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Benjamin Berg <benjamin.berg@intel.com>

commit 78f65fbf421a61894c14a1b91fe2fb4437b3fe5f upstream.

The resume code path assumes that the TX queue for the offloading TID
has been configured. At resume time it then tries to sync the write
pointer as it may have been updated by the firmware.

In the unusual event that no packets have been send on TID 0, the queue
will not have been allocated and this causes a crash. Fix this by
ensuring the queue exist at suspend time.

Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240218194912.6632e6dc7b35.Ie6e6a7488c9c7d4529f13d48f752b5439d8ac3c4@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Jianqi Ren <jianqi.ren.cn@windriver.com>
Signed-off-by: He Zhe <zhe.he@windriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/wireless/intel/iwlwifi/mvm/d3.c  |    9 +++++++-
 drivers/net/wireless/intel/iwlwifi/mvm/sta.c |   28 +++++++++++++++++++++++++++
 drivers/net/wireless/intel/iwlwifi/mvm/sta.h |    3 +-
 3 files changed, 38 insertions(+), 2 deletions(-)

--- a/drivers/net/wireless/intel/iwlwifi/mvm/d3.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/d3.c
@@ -1293,7 +1293,9 @@ static int __iwl_mvm_suspend(struct ieee
 
 		mvm->net_detect = true;
 	} else {
-		struct iwl_wowlan_config_cmd wowlan_config_cmd = {};
+		struct iwl_wowlan_config_cmd wowlan_config_cmd = {
+			.offloading_tid = 0,
+		};
 
 		wowlan_config_cmd.sta_id = mvmvif->deflink.ap_sta_id;
 
@@ -1305,6 +1307,11 @@ static int __iwl_mvm_suspend(struct ieee
 			goto out_noreset;
 		}
 
+		ret = iwl_mvm_sta_ensure_queue(
+			mvm, ap_sta->txq[wowlan_config_cmd.offloading_tid]);
+		if (ret)
+			goto out_noreset;
+
 		ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
 						vif, mvmvif, ap_sta);
 		if (ret)
--- a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c
@@ -1501,6 +1501,34 @@ out_err:
 	return ret;
 }
 
+int iwl_mvm_sta_ensure_queue(struct iwl_mvm *mvm,
+			     struct ieee80211_txq *txq)
+{
+	struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(txq);
+	int ret = -EINVAL;
+
+	lockdep_assert_held(&mvm->mutex);
+
+	if (likely(test_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state)) ||
+	    !txq->sta) {
+		return 0;
+	}
+
+	if (!iwl_mvm_sta_alloc_queue(mvm, txq->sta, txq->ac, txq->tid)) {
+		set_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state);
+		ret = 0;
+	}
+
+	local_bh_disable();
+	spin_lock(&mvm->add_stream_lock);
+	if (!list_empty(&mvmtxq->list))
+		list_del_init(&mvmtxq->list);
+	spin_unlock(&mvm->add_stream_lock);
+	local_bh_enable();
+
+	return ret;
+}
+
 void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk)
 {
 	struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm,
--- a/drivers/net/wireless/intel/iwlwifi/mvm/sta.h
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/sta.h
@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
 /*
- * Copyright (C) 2012-2014, 2018-2022 Intel Corporation
+ * Copyright (C) 2012-2014, 2018-2024 Intel Corporation
  * Copyright (C) 2013-2014 Intel Mobile Communications GmbH
  * Copyright (C) 2015-2016 Intel Deutschland GmbH
  */
@@ -577,6 +577,7 @@ void iwl_mvm_modify_all_sta_disable_tx(s
 				       bool disable);
 
 void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif);
+int iwl_mvm_sta_ensure_queue(struct iwl_mvm *mvm, struct ieee80211_txq *txq);
 void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk);
 int iwl_mvm_add_pasn_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 			 struct iwl_mvm_int_sta *sta, u8 *addr, u32 cipher,

[PATCH 6.6 77/77] netfilter: nft_counter: Use u64_stats_t for statistic.

[Greg Kroah-Hartman]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

commit 4a1d3acd6ea86075e77fcc1188c3fc372833ba73 upstream.

The nft_counter uses two s64 counters for statistics. Those two are
protected by a seqcount to ensure that the 64bit variable is always
properly seen during updates even on 32bit architectures where the store
is performed by two writes. A side effect is that the two counter (bytes
and packet) are written and read together in the same window.

This can be replaced with u64_stats_t. write_seqcount_begin()/ end() is
replaced with u64_stats_update_begin()/ end() and behaves the same way
as with seqcount_t on 32bit architectures. Additionally there is a
preempt_disable on PREEMPT_RT to ensure that a reader does not preempt a
writer.
On 64bit architectures the macros are removed and the reads happen
without any retries. This also means that the reader can observe one
counter (bytes) from before the update and the other counter (packets)
but that is okay since there is no requirement to have both counter from
the same update window.

Convert the statistic to u64_stats_t. There is one optimisation:
nft_counter_do_init() and nft_counter_clone() allocate a new per-CPU
counter and assign a value to it. During this assignment preemption is
disabled which is not needed because the counter is not yet exposed to
the system so there can not be another writer or reader. Therefore
disabling preemption is omitted and raw_cpu_ptr() is used to obtain a
pointer to a counter for the assignment.

Cc: Eric Dumazet <edumazet@google.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Felix Moessbauer <felix.moessbauer@siemens.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/netfilter/nft_counter.c |   90 ++++++++++++++++++++++----------------------
 1 file changed, 46 insertions(+), 44 deletions(-)

--- a/net/netfilter/nft_counter.c
+++ b/net/netfilter/nft_counter.c
@@ -8,7 +8,7 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/module.h>
-#include <linux/seqlock.h>
+#include <linux/u64_stats_sync.h>
 #include <linux/netlink.h>
 #include <linux/netfilter.h>
 #include <linux/netfilter/nf_tables.h>
@@ -17,6 +17,11 @@
 #include <net/netfilter/nf_tables_offload.h>
 
 struct nft_counter {
+	u64_stats_t	bytes;
+	u64_stats_t	packets;
+};
+
+struct nft_counter_tot {
 	s64		bytes;
 	s64		packets;
 };
@@ -25,25 +30,24 @@ struct nft_counter_percpu_priv {
 	struct nft_counter __percpu *counter;
 };
 
-static DEFINE_PER_CPU(seqcount_t, nft_counter_seq);
+static DEFINE_PER_CPU(struct u64_stats_sync, nft_counter_sync);
 
 static inline void nft_counter_do_eval(struct nft_counter_percpu_priv *priv,
 				       struct nft_regs *regs,
 				       const struct nft_pktinfo *pkt)
 {
+	struct u64_stats_sync *nft_sync;
 	struct nft_counter *this_cpu;
-	seqcount_t *myseq;
 
 	local_bh_disable();
 	this_cpu = this_cpu_ptr(priv->counter);
-	myseq = this_cpu_ptr(&nft_counter_seq);
-
-	write_seqcount_begin(myseq);
+	nft_sync = this_cpu_ptr(&nft_counter_sync);
 
-	this_cpu->bytes += pkt->skb->len;
-	this_cpu->packets++;
+	u64_stats_update_begin(nft_sync);
+	u64_stats_add(&this_cpu->bytes, pkt->skb->len);
+	u64_stats_inc(&this_cpu->packets);
+	u64_stats_update_end(nft_sync);
 
-	write_seqcount_end(myseq);
 	local_bh_enable();
 }
 
@@ -66,17 +70,16 @@ static int nft_counter_do_init(const str
 	if (cpu_stats == NULL)
 		return -ENOMEM;
 
-	preempt_disable();
-	this_cpu = this_cpu_ptr(cpu_stats);
+	this_cpu = raw_cpu_ptr(cpu_stats);
 	if (tb[NFTA_COUNTER_PACKETS]) {
-	        this_cpu->packets =
-			be64_to_cpu(nla_get_be64(tb[NFTA_COUNTER_PACKETS]));
+		u64_stats_set(&this_cpu->packets,
+			      be64_to_cpu(nla_get_be64(tb[NFTA_COUNTER_PACKETS])));
 	}
 	if (tb[NFTA_COUNTER_BYTES]) {
-		this_cpu->bytes =
-			be64_to_cpu(nla_get_be64(tb[NFTA_COUNTER_BYTES]));
+		u64_stats_set(&this_cpu->bytes,
+			      be64_to_cpu(nla_get_be64(tb[NFTA_COUNTER_BYTES])));
 	}
-	preempt_enable();
+
 	priv->counter = cpu_stats;
 	return 0;
 }
@@ -104,40 +107,41 @@ static void nft_counter_obj_destroy(cons
 }
 
 static void nft_counter_reset(struct nft_counter_percpu_priv *priv,
-			      struct nft_counter *total)
+			      struct nft_counter_tot *total)
 {
+	struct u64_stats_sync *nft_sync;
 	struct nft_counter *this_cpu;
-	seqcount_t *myseq;
 
 	local_bh_disable();
 	this_cpu = this_cpu_ptr(priv->counter);
-	myseq = this_cpu_ptr(&nft_counter_seq);
+	nft_sync = this_cpu_ptr(&nft_counter_sync);
+
+	u64_stats_update_begin(nft_sync);
+	u64_stats_add(&this_cpu->packets, -total->packets);
+	u64_stats_add(&this_cpu->bytes, -total->bytes);
+	u64_stats_update_end(nft_sync);
 
-	write_seqcount_begin(myseq);
-	this_cpu->packets -= total->packets;
-	this_cpu->bytes -= total->bytes;
-	write_seqcount_end(myseq);
 	local_bh_enable();
 }
 
 static void nft_counter_fetch(struct nft_counter_percpu_priv *priv,
-			      struct nft_counter *total)
+			      struct nft_counter_tot *total)
 {
 	struct nft_counter *this_cpu;
-	const seqcount_t *myseq;
 	u64 bytes, packets;
 	unsigned int seq;
 	int cpu;
 
 	memset(total, 0, sizeof(*total));
 	for_each_possible_cpu(cpu) {
-		myseq = per_cpu_ptr(&nft_counter_seq, cpu);
+		struct u64_stats_sync *nft_sync = per_cpu_ptr(&nft_counter_sync, cpu);
+
 		this_cpu = per_cpu_ptr(priv->counter, cpu);
 		do {
-			seq	= read_seqcount_begin(myseq);
-			bytes	= this_cpu->bytes;
-			packets	= this_cpu->packets;
-		} while (read_seqcount_retry(myseq, seq));
+			seq	= u64_stats_fetch_begin(nft_sync);
+			bytes	= u64_stats_read(&this_cpu->bytes);
+			packets	= u64_stats_read(&this_cpu->packets);
+		} while (u64_stats_fetch_retry(nft_sync, seq));
 
 		total->bytes	+= bytes;
 		total->packets	+= packets;
@@ -148,7 +152,7 @@ static int nft_counter_do_dump(struct sk
 			       struct nft_counter_percpu_priv *priv,
 			       bool reset)
 {
-	struct nft_counter total;
+	struct nft_counter_tot total;
 
 	nft_counter_fetch(priv, &total);
 
@@ -237,7 +241,7 @@ static int nft_counter_clone(struct nft_
 	struct nft_counter_percpu_priv *priv_clone = nft_expr_priv(dst);
 	struct nft_counter __percpu *cpu_stats;
 	struct nft_counter *this_cpu;
-	struct nft_counter total;
+	struct nft_counter_tot total;
 
 	nft_counter_fetch(priv, &total);
 
@@ -245,11 +249,9 @@ static int nft_counter_clone(struct nft_
 	if (cpu_stats == NULL)
 		return -ENOMEM;
 
-	preempt_disable();
-	this_cpu = this_cpu_ptr(cpu_stats);
-	this_cpu->packets = total.packets;
-	this_cpu->bytes = total.bytes;
-	preempt_enable();
+	this_cpu = raw_cpu_ptr(cpu_stats);
+	u64_stats_set(&this_cpu->packets, total.packets);
+	u64_stats_set(&this_cpu->bytes, total.bytes);
 
 	priv_clone->counter = cpu_stats;
 	return 0;
@@ -267,17 +269,17 @@ static void nft_counter_offload_stats(st
 				      const struct flow_stats *stats)
 {
 	struct nft_counter_percpu_priv *priv = nft_expr_priv(expr);
+	struct u64_stats_sync *nft_sync;
 	struct nft_counter *this_cpu;
-	seqcount_t *myseq;
 
 	local_bh_disable();
 	this_cpu = this_cpu_ptr(priv->counter);
-	myseq = this_cpu_ptr(&nft_counter_seq);
+	nft_sync = this_cpu_ptr(&nft_counter_sync);
 
-	write_seqcount_begin(myseq);
-	this_cpu->packets += stats->pkts;
-	this_cpu->bytes += stats->bytes;
-	write_seqcount_end(myseq);
+	u64_stats_update_begin(nft_sync);
+	u64_stats_add(&this_cpu->packets, stats->pkts);
+	u64_stats_add(&this_cpu->bytes, stats->bytes);
+	u64_stats_update_end(nft_sync);
 	local_bh_enable();
 }
 
@@ -286,7 +288,7 @@ void nft_counter_init_seqcount(void)
 	int cpu;
 
 	for_each_possible_cpu(cpu)
-		seqcount_init(per_cpu_ptr(&nft_counter_seq, cpu));
+		u64_stats_init(per_cpu_ptr(&nft_counter_sync, cpu));
 }
 
 struct nft_expr_type nft_counter_type;

Re: [PATCH 6.6 00/77] 6.6.85-rc1 review

[Naresh Kamboju]

On Tue, 25 Mar 2025 at 18:05, Greg Kroah-Hartman
<gregkh@linuxfoundation.org> wrote:
>
> This is the start of the stable review cycle for the 6.6.85 release.
> There are 77 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.
>
> Responses should be made by Thu, 27 Mar 2025 12:21:27 +0000.
> Anything received after that time might be too late.
>
> The whole patch series can be found in one patch at:
>         https://www.kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.6.85-rc1.gz
> or in the git tree and branch at:
>         git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-6.6.y
> and the diffstat can be found below.
>
> thanks,
>
> greg k-h


Regressions on arm64 rk3399 dtb builds failed with gcc-13 the
stable-rc 6.6.85-rc1

First seen on the v6.6.83-245-gc1fb5424adea
 Good: v6.6.84
 Bad: 6.6.85-rc1

* arm64, build
  - gcc-13-defconfig

Regression Analysis:
 - New regression? yes
 - Reproducibility? Yes


Build regression: arm64 dtb rockchip non-existent node or label "vcca_0v9"
Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>

## Build log
arch/arm64/boot/dts/rockchip/rk3399.dtsi:221.23-266.4: ERROR
(phandle_references):
/pcie@f8000000: Reference to non-existent node or label "vcca_0v9"

  also defined at arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dtsi:659.8-669.3

## Source
* Kernel version: 6.6.85-rc1
* Git tree: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
* Git sha: c1fb5424adea53e3a4d8b2018c5e974f7772af29
* Git describe: v6.6.83-245-gc1fb5424adea
* Project details:
https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-6.6.y/build/v6.6.83-245-gc1fb5424adea/

## Build
* Build log: https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-6.6.y/build/v6.6.83-245-gc1fb5424adea/testrun/27760755/suite/build/test/gcc-13-defconfig/log
* Build history:
https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-6.6.y/build/v6.6.83-245-gc1fb5424adea/testrun/27763720/suite/build/test/gcc-13-defconfig/history/
* Build details:
https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-6.6.y/build/v6.6.83-245-gc1fb5424adea/testrun/27760755/suite/build/test/gcc-13-defconfig/
* Build link: https://storage.tuxsuite.com/public/linaro/lkft/builds/2uoHmBcVLd60GQ0SVHWAaZRZfNd/
* Kernel config:
https://storage.tuxsuite.com/public/linaro/lkft/builds/2uoHmBcVLd60GQ0SVHWAaZRZfNd/config

## Steps to reproduce
 - # tuxmake --runtime podman --target-arch arm64 --toolchain gcc-13
--kconfig defconfig


--
Linaro LKFT
https://lkft.linaro.org

Re: [PATCH 6.6 00/77] 6.6.85-rc1 review

[Dragan Simic]

Hello Naresh,

On 2025-03-25 16:07, Naresh Kamboju wrote:
> On Tue, 25 Mar 2025 at 18:05, Greg Kroah-Hartman
> <gregkh@linuxfoundation.org> wrote:
>> 
>> This is the start of the stable review cycle for the 6.6.85 release.
>> There are 77 patches in this series, all will be posted as a response
>> to this one.  If anyone has any issues with these being applied, 
>> please
>> let me know.
>> 
>> Responses should be made by Thu, 27 Mar 2025 12:21:27 +0000.
>> Anything received after that time might be too late.
>> 
>> The whole patch series can be found in one patch at:
>>         
>> https://www.kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.6.85-rc1.gz
>> or in the git tree and branch at:
>>         
>> git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git 
>> linux-6.6.y
>> and the diffstat can be found below.
>> 
>> thanks,
>> 
>> greg k-h
> 
> 
> Regressions on arm64 rk3399 dtb builds failed with gcc-13 the
> stable-rc 6.6.85-rc1
> 
> First seen on the v6.6.83-245-gc1fb5424adea
>  Good: v6.6.84
>  Bad: 6.6.85-rc1
> 
> * arm64, build
>   - gcc-13-defconfig
> 
> Regression Analysis:
>  - New regression? yes
>  - Reproducibility? Yes
> 
> 
> Build regression: arm64 dtb rockchip non-existent node or label 
> "vcca_0v9"
> Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
> 
> ## Build log
> arch/arm64/boot/dts/rockchip/rk3399.dtsi:221.23-266.4: ERROR
> (phandle_references):
> /pcie@f8000000: Reference to non-existent node or label "vcca_0v9"
> 
>   also defined at 
> arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dtsi:659.8-669.3
> 
> ## Source
> * Kernel version: 6.6.85-rc1
> * Git tree:
> https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
> * Git sha: c1fb5424adea53e3a4d8b2018c5e974f7772af29
> * Git describe: v6.6.83-245-gc1fb5424adea
> * Project details:
> https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-6.6.y/build/v6.6.83-245-gc1fb5424adea/
> 
> ## Build
> * Build log:
> https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-6.6.y/build/v6.6.83-245-gc1fb5424adea/testrun/27760755/suite/build/test/gcc-13-defconfig/log
> * Build history:
> https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-6.6.y/build/v6.6.83-245-gc1fb5424adea/testrun/27763720/suite/build/test/gcc-13-defconfig/history/
> * Build details:
> https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-6.6.y/build/v6.6.83-245-gc1fb5424adea/testrun/27760755/suite/build/test/gcc-13-defconfig/
> * Build link:
> https://storage.tuxsuite.com/public/linaro/lkft/builds/2uoHmBcVLd60GQ0SVHWAaZRZfNd/
> * Kernel config:
> https://storage.tuxsuite.com/public/linaro/lkft/builds/2uoHmBcVLd60GQ0SVHWAaZRZfNd/config
> 
> ## Steps to reproduce
>  - # tuxmake --runtime podman --target-arch arm64 --toolchain gcc-13
> --kconfig defconfig

This is caused by another patch from the original series failing
to apply due to some bulk regulator renaming.  I'll send backported
version of that patch soon, which should make everything fine.

Re: [PATCH 6.6 00/77] 6.6.85-rc1 review

[Florian Fainelli]

On 3/25/25 05:21, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 6.6.85 release.
> There are 77 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.
> 
> Responses should be made by Thu, 27 Mar 2025 12:21:27 +0000.
> Anything received after that time might be too late.
> 
> The whole patch series can be found in one patch at:
> 	https://www.kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.6.85-rc1.gz
> or in the git tree and branch at:
> 	git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-6.6.y
> and the diffstat can be found below.
> 
> thanks,
> 
> greg k-h

On ARCH_BRCMSTB using 32-bit and 64-bit ARM kernels, build tested on 
BMIPS_GENERIC:

Tested-by: Florian Fainelli <florian.fainelli@broadcom.com>
-- 
Florian

Re: [PATCH 6.6 00/77] 6.6.85-rc1 review

[Greg Kroah-Hartman]

On Tue, Mar 25, 2025 at 05:07:16PM +0100, Dragan Simic wrote:
> Hello Naresh,
> 
> On 2025-03-25 16:07, Naresh Kamboju wrote:
> > On Tue, 25 Mar 2025 at 18:05, Greg Kroah-Hartman
> > <gregkh@linuxfoundation.org> wrote:
> > > 
> > > This is the start of the stable review cycle for the 6.6.85 release.
> > > There are 77 patches in this series, all will be posted as a response
> > > to this one.  If anyone has any issues with these being applied,
> > > please
> > > let me know.
> > > 
> > > Responses should be made by Thu, 27 Mar 2025 12:21:27 +0000.
> > > Anything received after that time might be too late.
> > > 
> > > The whole patch series can be found in one patch at:
> > > https://www.kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.6.85-rc1.gz
> > > or in the git tree and branch at:

> > > git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
> > > linux-6.6.y
> > > and the diffstat can be found below.
> > > 
> > > thanks,
> > > 
> > > greg k-h
> > 
> > 
> > Regressions on arm64 rk3399 dtb builds failed with gcc-13 the
> > stable-rc 6.6.85-rc1
> > 
> > First seen on the v6.6.83-245-gc1fb5424adea
> >  Good: v6.6.84
> >  Bad: 6.6.85-rc1
> > 
> > * arm64, build
> >   - gcc-13-defconfig
> > 
> > Regression Analysis:
> >  - New regression? yes
> >  - Reproducibility? Yes
> > 
> > 
> > Build regression: arm64 dtb rockchip non-existent node or label
> > "vcca_0v9"
> > Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
> > 
> > ## Build log
> > arch/arm64/boot/dts/rockchip/rk3399.dtsi:221.23-266.4: ERROR
> > (phandle_references):
> > /pcie@f8000000: Reference to non-existent node or label "vcca_0v9"
> > 
> >   also defined at
> > arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dtsi:659.8-669.3
> > 
> > ## Source
> > * Kernel version: 6.6.85-rc1
> > * Git tree:
> > https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
> > * Git sha: c1fb5424adea53e3a4d8b2018c5e974f7772af29
> > * Git describe: v6.6.83-245-gc1fb5424adea
> > * Project details:
> > https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-6.6.y/build/v6.6.83-245-gc1fb5424adea/
> > 
> > ## Build
> > * Build log:
> > https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-6.6.y/build/v6.6.83-245-gc1fb5424adea/testrun/27760755/suite/build/test/gcc-13-defconfig/log
> > * Build history:
> > https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-6.6.y/build/v6.6.83-245-gc1fb5424adea/testrun/27763720/suite/build/test/gcc-13-defconfig/history/
> > * Build details:
> > https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-6.6.y/build/v6.6.83-245-gc1fb5424adea/testrun/27760755/suite/build/test/gcc-13-defconfig/
> > * Build link:
> > https://storage.tuxsuite.com/public/linaro/lkft/builds/2uoHmBcVLd60GQ0SVHWAaZRZfNd/
> > * Kernel config:
> > https://storage.tuxsuite.com/public/linaro/lkft/builds/2uoHmBcVLd60GQ0SVHWAaZRZfNd/config
> > 
> > ## Steps to reproduce
> >  - # tuxmake --runtime podman --target-arch arm64 --toolchain gcc-13
> > --kconfig defconfig
> 
> This is caused by another patch from the original series failing
> to apply due to some bulk regulator renaming.  I'll send backported
> version of that patch soon, which should make everything fine.
> 

What commit id needs to be backported?  Or did you submit the fix
already and I just missed it?

thanks,

greg k-h

Re: [PATCH 6.6 00/77] 6.6.85-rc1 review

[Harshit Mogalapalli]

Hi Greg,

On 25/03/25 21:37, Dragan Simic wrote:
> Hello Naresh,
> 
> On 2025-03-25 16:07, Naresh Kamboju wrote:
...
>> Build regression: arm64 dtb rockchip non-existent node or label 
>> "vcca_0v9"
>> Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
>>
>> ## Build log
>> arch/arm64/boot/dts/rockchip/rk3399.dtsi:221.23-266.4: ERROR
>> (phandle_references):
>> /pcie@f8000000: Reference to non-existent node or label "vcca_0v9"
>>
>>   also defined at arch/arm64/boot/dts/rockchip/rk3399- 
>> rockpro64.dtsi:659.8-669.3
...
> 
> This is caused by another patch from the original series failing
> to apply due to some bulk regulator renaming.  I'll send backported
> version of that patch soon, which should make everything fine.
> 

On ARM configs, we do see the same issue that Naresh reported.

arch/arm64/boot/dts/rockchip/rk3399.dtsi:221.23-266.4: ERROR 
(phandle_references): /pcie@f8000000: Reference to non-existent node or 
label "vcca_0v9"
  also defined at 
arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dtsi:659.8-669.3
ERROR: Input tree has errors, aborting (use -f to force output)
make[3]: *** [scripts/Makefile.lib:423: 
arch/arm64/boot/dts/rockchip/rk3399-rockpro64-v2.dtb] Error 2
make[3]: *** Waiting for unfinished jobs....
arch/arm64/boot/dts/rockchip/rk3399.dtsi:221.23-266.4: ERROR 
(phandle_references): /pcie@f8000000: Reference to non-existent node or 
label "vcca_0v9"
  also defined at 
arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dtsi:659.8-669.3
ERROR: Input tree has errors, aborting (use -f to force output)
make[3]: *** [scripts/Makefile.lib:423: 
arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dtb] Error 2
make[2]: *** [scripts/Makefile.build:480: arch/arm64/boot/dts/rockchip] 
Error 2
make[2]: *** Waiting for unfinished jobs....

Caused by commit: 1e4bd0ec5a47 ("arm64: dts: rockchip: Add missing PCIe 
supplies to RockPro64 board dtsi") -- PATCH 42/77 of this series.

We see same problem with 6.12.21-rc1 as well.


Notes:
-----
I think Dragan was referring to upstream commit: bd1c959f37f3 ("arm64: 
dts: rockchip: Add avdd HDMI supplies to RockPro64 board dtsi") which 
will fix this problem but fails to apply due to regulator renaming in 
commit: 5c96e6330197 ("arm64: dts: rockchip: adapt regulator nodenames 
to preferred form") which is not in stable kernels(6.6.y and 6.12.y)


Thanks,
Harshit

Re: [PATCH 6.6 00/77] 6.6.85-rc1 review

[Dragan Simic]

Hello Harshit and Greg,

On 2025-03-26 03:33, Harshit Mogalapalli wrote:
> On 25/03/25 21:37, Dragan Simic wrote:
>> On 2025-03-25 16:07, Naresh Kamboju wrote:
> ...
>>> Build regression: arm64 dtb rockchip non-existent node or label 
>>> "vcca_0v9"
>>> Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
>>> 
>>> ## Build log
>>> arch/arm64/boot/dts/rockchip/rk3399.dtsi:221.23-266.4: ERROR
>>> (phandle_references):
>>> /pcie@f8000000: Reference to non-existent node or label "vcca_0v9"
>>> 
>>>   also defined at arch/arm64/boot/dts/rockchip/rk3399- 
>>> rockpro64.dtsi:659.8-669.3
> ...
>> 
>> This is caused by another patch from the original series failing
>> to apply due to some bulk regulator renaming.  I'll send backported
>> version of that patch soon, which should make everything fine.
> 
> On ARM configs, we do see the same issue that Naresh reported.
> 
> arch/arm64/boot/dts/rockchip/rk3399.dtsi:221.23-266.4: ERROR
> (phandle_references): /pcie@f8000000: Reference to non-existent node
> or label "vcca_0v9"
>  also defined at 
> arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dtsi:659.8-669.3
> ERROR: Input tree has errors, aborting (use -f to force output)
> make[3]: *** [scripts/Makefile.lib:423:
> arch/arm64/boot/dts/rockchip/rk3399-rockpro64-v2.dtb] Error 2
> make[3]: *** Waiting for unfinished jobs....
> arch/arm64/boot/dts/rockchip/rk3399.dtsi:221.23-266.4: ERROR
> (phandle_references): /pcie@f8000000: Reference to non-existent node
> or label "vcca_0v9"
>  also defined at 
> arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dtsi:659.8-669.3
> ERROR: Input tree has errors, aborting (use -f to force output)
> make[3]: *** [scripts/Makefile.lib:423:
> arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dtb] Error 2
> make[2]: *** [scripts/Makefile.build:480: arch/arm64/boot/dts/rockchip] 
> Error 2
> make[2]: *** Waiting for unfinished jobs....
> 
> Caused by commit: 1e4bd0ec5a47 ("arm64: dts: rockchip: Add missing
> PCIe supplies to RockPro64 board dtsi") -- PATCH 42/77 of this series.
> 
> We see same problem with 6.12.21-rc1 as well.
> 
> Notes:
> -----
> I think Dragan was referring to upstream commit: bd1c959f37f3 ("arm64:
> dts: rockchip: Add avdd HDMI supplies to RockPro64 board dtsi") which
> will fix this problem but fails to apply due to regulator renaming in
> commit: 5c96e6330197 ("arm64: dts: rockchip: adapt regulator nodenames
> to preferred form") which is not in stable kernels(6.6.y and 6.12.y)

Exactly, the direct dependency is the commit bd1c959f37f3 ("arm64:
dts: rockchip: Add avdd HDMI supplies to RockPro64 board dtsi"),
for which I haven't sent the backported version yet.

As Diederik pointed it out already in a separate message [*] from
a couple of days ago, it might be the best to include the commit
5c96e6330197 ("arm64: dts: rockchip: adapt regulator nodenames to
preferred form") into stable kernels as well.

Obviously, including the commit 5c96e6330197 pretty much goes
against the rules of stable kernels, but it would save a lot of
time and effort in the future.

[*] https://lore.kernel.org/stable/D8ONE4WEF7A2.1OE1YY8J34MM3@cknow.org/

Re: [PATCH 6.6 00/77] 6.6.85-rc1 review

[Greg Kroah-Hartman]

On Wed, Mar 26, 2025 at 04:56:18AM +0100, Dragan Simic wrote:
> Hello Harshit and Greg,
> 
> On 2025-03-26 03:33, Harshit Mogalapalli wrote:
> > On 25/03/25 21:37, Dragan Simic wrote:
> > > On 2025-03-25 16:07, Naresh Kamboju wrote:
> > ...
> > > > Build regression: arm64 dtb rockchip non-existent node or label
> > > > "vcca_0v9"
> > > > Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
> > > > 
> > > > ## Build log
> > > > arch/arm64/boot/dts/rockchip/rk3399.dtsi:221.23-266.4: ERROR
> > > > (phandle_references):
> > > > /pcie@f8000000: Reference to non-existent node or label "vcca_0v9"
> > > > 
> > > >   also defined at arch/arm64/boot/dts/rockchip/rk3399-
> > > > rockpro64.dtsi:659.8-669.3
> > ...
> > > 
> > > This is caused by another patch from the original series failing
> > > to apply due to some bulk regulator renaming.  I'll send backported
> > > version of that patch soon, which should make everything fine.
> > 
> > On ARM configs, we do see the same issue that Naresh reported.
> > 
> > arch/arm64/boot/dts/rockchip/rk3399.dtsi:221.23-266.4: ERROR
> > (phandle_references): /pcie@f8000000: Reference to non-existent node
> > or label "vcca_0v9"
> >  also defined at
> > arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dtsi:659.8-669.3
> > ERROR: Input tree has errors, aborting (use -f to force output)
> > make[3]: *** [scripts/Makefile.lib:423:
> > arch/arm64/boot/dts/rockchip/rk3399-rockpro64-v2.dtb] Error 2
> > make[3]: *** Waiting for unfinished jobs....
> > arch/arm64/boot/dts/rockchip/rk3399.dtsi:221.23-266.4: ERROR
> > (phandle_references): /pcie@f8000000: Reference to non-existent node
> > or label "vcca_0v9"
> >  also defined at
> > arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dtsi:659.8-669.3
> > ERROR: Input tree has errors, aborting (use -f to force output)
> > make[3]: *** [scripts/Makefile.lib:423:
> > arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dtb] Error 2
> > make[2]: *** [scripts/Makefile.build:480: arch/arm64/boot/dts/rockchip]
> > Error 2
> > make[2]: *** Waiting for unfinished jobs....
> > 
> > Caused by commit: 1e4bd0ec5a47 ("arm64: dts: rockchip: Add missing
> > PCIe supplies to RockPro64 board dtsi") -- PATCH 42/77 of this series.
> > 
> > We see same problem with 6.12.21-rc1 as well.
> > 
> > Notes:
> > -----
> > I think Dragan was referring to upstream commit: bd1c959f37f3 ("arm64:
> > dts: rockchip: Add avdd HDMI supplies to RockPro64 board dtsi") which
> > will fix this problem but fails to apply due to regulator renaming in
> > commit: 5c96e6330197 ("arm64: dts: rockchip: adapt regulator nodenames
> > to preferred form") which is not in stable kernels(6.6.y and 6.12.y)
> 
> Exactly, the direct dependency is the commit bd1c959f37f3 ("arm64:
> dts: rockchip: Add avdd HDMI supplies to RockPro64 board dtsi"),
> for which I haven't sent the backported version yet.
> 
> As Diederik pointed it out already in a separate message [*] from
> a couple of days ago, it might be the best to include the commit
> 5c96e6330197 ("arm64: dts: rockchip: adapt regulator nodenames to
> preferred form") into stable kernels as well.
> 
> Obviously, including the commit 5c96e6330197 pretty much goes
> against the rules of stable kernels, but it would save a lot of
> time and effort in the future.
> 
> [*] https://lore.kernel.org/stable/D8ONE4WEF7A2.1OE1YY8J34MM3@cknow.org/

As that's a big change, and no one seems to be sending it to me for
inclusion, I'll just go drop the patch that broke the builds for now and
wait for someone to send working ones later.

thanks,

greg k-h

Re: [PATCH 6.6 00/77] 6.6.85-rc1 review

[Dragan Simic]

Hello Greg,

On 2025-03-26 16:38, Greg Kroah-Hartman wrote:
> On Wed, Mar 26, 2025 at 04:56:18AM +0100, Dragan Simic wrote:
>> On 2025-03-26 03:33, Harshit Mogalapalli wrote:
>> > On 25/03/25 21:37, Dragan Simic wrote:
>> > > On 2025-03-25 16:07, Naresh Kamboju wrote:
>> > ...
>> > > > Build regression: arm64 dtb rockchip non-existent node or label
>> > > > "vcca_0v9"
>> > > > Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
>> > > >
>> > > > ## Build log
>> > > > arch/arm64/boot/dts/rockchip/rk3399.dtsi:221.23-266.4: ERROR
>> > > > (phandle_references):
>> > > > /pcie@f8000000: Reference to non-existent node or label "vcca_0v9"
>> > > >
>> > > >   also defined at arch/arm64/boot/dts/rockchip/rk3399-
>> > > > rockpro64.dtsi:659.8-669.3
>> > ...
>> > >
>> > > This is caused by another patch from the original series failing
>> > > to apply due to some bulk regulator renaming.  I'll send backported
>> > > version of that patch soon, which should make everything fine.
>> >
>> > On ARM configs, we do see the same issue that Naresh reported.
>> >
>> > arch/arm64/boot/dts/rockchip/rk3399.dtsi:221.23-266.4: ERROR
>> > (phandle_references): /pcie@f8000000: Reference to non-existent node
>> > or label "vcca_0v9"
>> >  also defined at
>> > arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dtsi:659.8-669.3
>> > ERROR: Input tree has errors, aborting (use -f to force output)
>> > make[3]: *** [scripts/Makefile.lib:423:
>> > arch/arm64/boot/dts/rockchip/rk3399-rockpro64-v2.dtb] Error 2
>> > make[3]: *** Waiting for unfinished jobs....
>> > arch/arm64/boot/dts/rockchip/rk3399.dtsi:221.23-266.4: ERROR
>> > (phandle_references): /pcie@f8000000: Reference to non-existent node
>> > or label "vcca_0v9"
>> >  also defined at
>> > arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dtsi:659.8-669.3
>> > ERROR: Input tree has errors, aborting (use -f to force output)
>> > make[3]: *** [scripts/Makefile.lib:423:
>> > arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dtb] Error 2
>> > make[2]: *** [scripts/Makefile.build:480: arch/arm64/boot/dts/rockchip]
>> > Error 2
>> > make[2]: *** Waiting for unfinished jobs....
>> >
>> > Caused by commit: 1e4bd0ec5a47 ("arm64: dts: rockchip: Add missing
>> > PCIe supplies to RockPro64 board dtsi") -- PATCH 42/77 of this series.
>> >
>> > We see same problem with 6.12.21-rc1 as well.
>> >
>> > Notes:
>> > -----
>> > I think Dragan was referring to upstream commit: bd1c959f37f3 ("arm64:
>> > dts: rockchip: Add avdd HDMI supplies to RockPro64 board dtsi") which
>> > will fix this problem but fails to apply due to regulator renaming in
>> > commit: 5c96e6330197 ("arm64: dts: rockchip: adapt regulator nodenames
>> > to preferred form") which is not in stable kernels(6.6.y and 6.12.y)
>> 
>> Exactly, the direct dependency is the commit bd1c959f37f3 ("arm64:
>> dts: rockchip: Add avdd HDMI supplies to RockPro64 board dtsi"),
>> for which I haven't sent the backported version yet.
>> 
>> As Diederik pointed it out already in a separate message [*] from
>> a couple of days ago, it might be the best to include the commit
>> 5c96e6330197 ("arm64: dts: rockchip: adapt regulator nodenames to
>> preferred form") into stable kernels as well.
>> 
>> Obviously, including the commit 5c96e6330197 pretty much goes
>> against the rules of stable kernels, but it would save a lot of
>> time and effort in the future.
>> 
>> [*] 
>> https://lore.kernel.org/stable/D8ONE4WEF7A2.1OE1YY8J34MM3@cknow.org/
> 
> As that's a big change, and no one seems to be sending it to me for
> inclusion, I'll just go drop the patch that broke the builds for now 
> and
> wait for someone to send working ones later.

Makes sense to me, thanks.  I'll send you the three patches (i.e., the
bulk regulator renaming patch, and the two RockPro64 patches) that need
to be included in the stable kernels, in the next couple of days.  
Having
the bulk regulator renaming patch included in the stable kernels should
save us a lot of time and effort in the future.

I would've sent you those patches earlier, but I'm currently in a really
tight spot when it comes to time.