[PATCH 4.19 00/41] 4.19.288-rc1 review

[PATCH 4.19 00/41] 4.19.288-rc1 review

[Greg Kroah-Hartman]

This is the start of the stable review cycle for the 4.19.288 release.
There are 41 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 Wed, 28 Jun 2023 18:07:23 +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/v4.x/stable-review/patch-4.19.288-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-4.19.y
and the diffstat can be found below.

thanks,

greg k-h

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

Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    Linux 4.19.288-rc1

Clark Wang <xiaoning.wang@nxp.com>
    i2c: imx-lpi2c: fix type char overflow issue when calculating the clock cycle

Dheeraj Kumar Srivastava <dheerajkumar.srivastava@amd.com>
    x86/apic: Fix kernel panic when booting with intremap=off and x2apic_phys

Min Li <lm0963hack@gmail.com>
    drm/radeon: fix race condition UAF in radeon_gem_set_domain_ioctl

Min Li <lm0963hack@gmail.com>
    drm/exynos: fix race condition UAF in exynos_g2d_exec_ioctl

Inki Dae <inki.dae@samsung.com>
    drm/exynos: vidi: fix a wrong error return

Edson Juliano Drosdeck <edson.drosdeck@gmail.com>
    ASoC: nau8824: Add quirk to active-high jack-detect

Vineeth Vijayan <vneethv@linux.ibm.com>
    s390/cio: unregister device when the only path is gone

Dan Carpenter <dan.carpenter@linaro.org>
    usb: gadget: udc: fix NULL dereference in remove()

Osama Muhammad <osmtendev@gmail.com>
    nfcsim.c: Fix error checking for debugfs_create_dir

Hans Verkuil <hverkuil-cisco@xs4all.nl>
    media: cec: core: don't set last_initiator if tx in progress

Marc Zyngier <maz@kernel.org>
    arm64: Add missing Set/Way CMO encodings

Denis Arefev <arefev@swemel.ru>
    HID: wacom: Add error check to wacom_parse_and_register()

Maurizio Lombardi <mlombard@redhat.com>
    scsi: target: iscsi: Prevent login threads from racing between each other

Eric Dumazet <edumazet@google.com>
    sch_netem: acquire qdisc lock in netem_change()

Pablo Neira Ayuso <pablo@netfilter.org>
    netfilter: nfnetlink_osf: fix module autoload

Pablo Neira Ayuso <pablo@netfilter.org>
    netfilter: nf_tables: disallow element updates of bound anonymous sets

Ross Lagerwall <ross.lagerwall@citrix.com>
    be2net: Extend xmit workaround to BE3 chip

Sergey Shtylyov <s.shtylyov@omp.ru>
    mmc: usdhi60rol0: fix deferred probing

Sergey Shtylyov <s.shtylyov@omp.ru>
    mmc: sdhci-acpi: fix deferred probing

Sergey Shtylyov <s.shtylyov@omp.ru>
    mmc: omap_hsmmc: fix deferred probing

Sergey Shtylyov <s.shtylyov@omp.ru>
    mmc: omap: fix deferred probing

Sergey Shtylyov <s.shtylyov@omp.ru>
    mmc: mvsdio: fix deferred probing

Yangtao Li <tiny.windzz@gmail.com>
    mmc: mvsdio: convert to devm_platform_ioremap_resource

Sergey Shtylyov <s.shtylyov@omp.ru>
    mmc: mtk-sd: fix deferred probing

Stefan Wahren <stefan.wahren@i2se.com>
    net: qca_spi: Avoid high load if QCA7000 is not available

Sebastian Andrzej Siewior <bigeasy@linutronix.de>
    xfrm: Linearize the skb after offloading if needed.

Chen Aotian <chenaotian2@163.com>
    ieee802154: hwsim: Fix possible memory leaks

Paul E. McKenney <paulmck@kernel.org>
    rcu: Upgrade rcu_swap_protected() to rcu_replace_pointer()

Ryusuke Konishi <konishi.ryusuke@gmail.com>
    nilfs2: prevent general protection fault in nilfs_clear_dirty_page()

Xiu Jianfeng <xiujianfeng@huawei.com>
    cgroup: Do not corrupt task iteration when rebinding subsystem

Dexuan Cui <decui@microsoft.com>
    PCI: hv: Fix a race condition bug in hv_pci_query_relations()

Michael Kelley <mikelley@microsoft.com>
    Drivers: hv: vmbus: Fix vmbus_wait_for_unload() to scan present CPUs

Ryusuke Konishi <konishi.ryusuke@gmail.com>
    nilfs2: fix buffer corruption due to concurrent device reads

Tony Camuso <tcamuso@redhat.com>
    ipmi: move message error checking to avoid deadlock

Corey Minyard <cminyard@mvista.com>
    ipmi: Make the smi watcher be disabled immediately when not needed

Ricardo Ribalda <ribalda@chromium.org>
    x86/purgatory: remove PGO flags

Ryusuke Konishi <konishi.ryusuke@gmail.com>
    nilfs2: reject devices with insufficient block count

Bernhard Seibold <mail@bernhard-seibold.de>
    serial: lantiq: add missing interrupt ack

Hauke Mehrtens <hauke@hauke-m.de>
    serial: lantiq: Do not swap register read/writes

Songjun Wu <songjun.wu@linux.intel.com>
    serial: lantiq: Use readl/writel instead of ltq_r32/ltq_w32

Songjun Wu <songjun.wu@linux.intel.com>
    serial: lantiq: Change ltq_w32_mask to asc_update_bits


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

Diffstat:

 Makefile                                    |   4 +-
 arch/arm64/include/asm/sysreg.h             |   6 +
 arch/x86/kernel/apic/x2apic_phys.c          |   5 +-
 arch/x86/purgatory/Makefile                 |   5 +
 drivers/char/ipmi/ipmi_msghandler.c         | 278 +++++++++++++++-------------
 drivers/char/ipmi/ipmi_si_intf.c            |   2 +-
 drivers/char/ipmi/ipmi_ssif.c               |   2 +-
 drivers/gpu/drm/exynos/exynos_drm_g2d.c     |   2 +-
 drivers/gpu/drm/exynos/exynos_drm_vidi.c    |   2 -
 drivers/gpu/drm/radeon/radeon_gem.c         |   4 +-
 drivers/hid/wacom_sys.c                     |   7 +-
 drivers/hv/channel_mgmt.c                   |  18 +-
 drivers/i2c/busses/i2c-imx-lpi2c.c          |   4 +-
 drivers/media/cec/cec-adap.c                |   3 +-
 drivers/mmc/host/mtk-sd.c                   |   2 +-
 drivers/mmc/host/mvsdio.c                   |   8 +-
 drivers/mmc/host/omap.c                     |   2 +-
 drivers/mmc/host/omap_hsmmc.c               |   6 +-
 drivers/mmc/host/sdhci-acpi.c               |   2 +-
 drivers/mmc/host/usdhi6rol0.c               |   6 +-
 drivers/net/ethernet/emulex/benet/be_main.c |   4 +-
 drivers/net/ethernet/qualcomm/qca_spi.c     |   3 +-
 drivers/net/ieee802154/mac802154_hwsim.c    |   6 +-
 drivers/nfc/nfcsim.c                        |   4 -
 drivers/pci/controller/pci-hyperv.c         |  18 ++
 drivers/s390/cio/device.c                   |   5 +-
 drivers/target/iscsi/iscsi_target_nego.c    |   4 +-
 drivers/tty/serial/lantiq.c                 |  74 ++++----
 drivers/usb/gadget/udc/amd5536udc_pci.c     |   3 +
 fs/nilfs2/page.c                            |  10 +-
 fs/nilfs2/segbuf.c                          |   6 +
 fs/nilfs2/segment.c                         |   7 +
 fs/nilfs2/super.c                           |  25 ++-
 fs/nilfs2/the_nilfs.c                       |  44 ++++-
 include/linux/ipmi_smi.h                    |  17 +-
 include/linux/rcupdate.h                    |  18 ++
 kernel/cgroup/cgroup.c                      |  20 +-
 net/ipv4/esp4_offload.c                     |   3 +
 net/ipv6/esp6_offload.c                     |   3 +
 net/netfilter/nf_tables_api.c               |   7 +-
 net/netfilter/nfnetlink_osf.c               |   1 +
 net/netfilter/xt_osf.c                      |   1 -
 net/sched/sch_netem.c                       |   8 +-
 sound/soc/codecs/nau8824.c                  |  24 +++
 44 files changed, 454 insertions(+), 229 deletions(-)

[PATCH 4.19 01/41] serial: lantiq: Change ltq_w32_mask to asc_update_bits

[Greg Kroah-Hartman]

From: Songjun Wu <songjun.wu@linux.intel.com>

[ Upstream commit fccf231ae907dc9eb45eb8a9adb961195066b2c6 ]

ltq prefix is platform specific function, asc prefix
is more generic.

Signed-off-by: Songjun Wu <songjun.wu@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Stable-dep-of: 306320034e8f ("serial: lantiq: add missing interrupt ack")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/tty/serial/lantiq.c | 33 ++++++++++++++++++++-------------
 1 file changed, 20 insertions(+), 13 deletions(-)

diff --git a/drivers/tty/serial/lantiq.c b/drivers/tty/serial/lantiq.c
index 044128277248b..848286a12c20b 100644
--- a/drivers/tty/serial/lantiq.c
+++ b/drivers/tty/serial/lantiq.c
@@ -113,6 +113,13 @@ struct ltq_uart_port {
 	unsigned int		err_irq;
 };
 
+static inline void asc_update_bits(u32 clear, u32 set, void __iomem *reg)
+{
+	u32 tmp = readl(reg);
+
+	writel((tmp & ~clear) | set, reg);
+}
+
 static inline struct
 ltq_uart_port *to_ltq_uart_port(struct uart_port *port)
 {
@@ -163,16 +170,16 @@ lqasc_rx_chars(struct uart_port *port)
 		if (rsr & ASCSTATE_ANY) {
 			if (rsr & ASCSTATE_PE) {
 				port->icount.parity++;
-				ltq_w32_mask(0, ASCWHBSTATE_CLRPE,
+				asc_update_bits(0, ASCWHBSTATE_CLRPE,
 					port->membase + LTQ_ASC_WHBSTATE);
 			} else if (rsr & ASCSTATE_FE) {
 				port->icount.frame++;
-				ltq_w32_mask(0, ASCWHBSTATE_CLRFE,
+				asc_update_bits(0, ASCWHBSTATE_CLRFE,
 					port->membase + LTQ_ASC_WHBSTATE);
 			}
 			if (rsr & ASCSTATE_ROE) {
 				port->icount.overrun++;
-				ltq_w32_mask(0, ASCWHBSTATE_CLRROE,
+				asc_update_bits(0, ASCWHBSTATE_CLRROE,
 					port->membase + LTQ_ASC_WHBSTATE);
 			}
 
@@ -252,7 +259,7 @@ lqasc_err_int(int irq, void *_port)
 	struct uart_port *port = (struct uart_port *)_port;
 	spin_lock_irqsave(&ltq_asc_lock, flags);
 	/* clear any pending interrupts */
-	ltq_w32_mask(0, ASCWHBSTATE_CLRPE | ASCWHBSTATE_CLRFE |
+	asc_update_bits(0, ASCWHBSTATE_CLRPE | ASCWHBSTATE_CLRFE |
 		ASCWHBSTATE_CLRROE, port->membase + LTQ_ASC_WHBSTATE);
 	spin_unlock_irqrestore(&ltq_asc_lock, flags);
 	return IRQ_HANDLED;
@@ -304,7 +311,7 @@ lqasc_startup(struct uart_port *port)
 		clk_enable(ltq_port->clk);
 	port->uartclk = clk_get_rate(ltq_port->fpiclk);
 
-	ltq_w32_mask(ASCCLC_DISS | ASCCLC_RMCMASK, (1 << ASCCLC_RMCOFFSET),
+	asc_update_bits(ASCCLC_DISS | ASCCLC_RMCMASK, (1 << ASCCLC_RMCOFFSET),
 		port->membase + LTQ_ASC_CLC);
 
 	ltq_w32(0, port->membase + LTQ_ASC_PISEL);
@@ -320,7 +327,7 @@ lqasc_startup(struct uart_port *port)
 	 * setting enable bits
 	 */
 	wmb();
-	ltq_w32_mask(0, ASCCON_M_8ASYNC | ASCCON_FEN | ASCCON_TOEN |
+	asc_update_bits(0, ASCCON_M_8ASYNC | ASCCON_FEN | ASCCON_TOEN |
 		ASCCON_ROEN, port->membase + LTQ_ASC_CON);
 
 	retval = request_irq(ltq_port->tx_irq, lqasc_tx_int,
@@ -364,9 +371,9 @@ lqasc_shutdown(struct uart_port *port)
 	free_irq(ltq_port->err_irq, port);
 
 	ltq_w32(0, port->membase + LTQ_ASC_CON);
-	ltq_w32_mask(ASCRXFCON_RXFEN, ASCRXFCON_RXFFLU,
+	asc_update_bits(ASCRXFCON_RXFEN, ASCRXFCON_RXFFLU,
 		port->membase + LTQ_ASC_RXFCON);
-	ltq_w32_mask(ASCTXFCON_TXFEN, ASCTXFCON_TXFFLU,
+	asc_update_bits(ASCTXFCON_TXFEN, ASCTXFCON_TXFFLU,
 		port->membase + LTQ_ASC_TXFCON);
 	if (!IS_ERR(ltq_port->clk))
 		clk_disable(ltq_port->clk);
@@ -438,7 +445,7 @@ lqasc_set_termios(struct uart_port *port,
 	spin_lock_irqsave(&ltq_asc_lock, flags);
 
 	/* set up CON */
-	ltq_w32_mask(0, con, port->membase + LTQ_ASC_CON);
+	asc_update_bits(0, con, port->membase + LTQ_ASC_CON);
 
 	/* Set baud rate - take a divider of 2 into account */
 	baud = uart_get_baud_rate(port, new, old, 0, port->uartclk / 16);
@@ -446,19 +453,19 @@ lqasc_set_termios(struct uart_port *port,
 	divisor = divisor / 2 - 1;
 
 	/* disable the baudrate generator */
-	ltq_w32_mask(ASCCON_R, 0, port->membase + LTQ_ASC_CON);
+	asc_update_bits(ASCCON_R, 0, port->membase + LTQ_ASC_CON);
 
 	/* make sure the fractional divider is off */
-	ltq_w32_mask(ASCCON_FDE, 0, port->membase + LTQ_ASC_CON);
+	asc_update_bits(ASCCON_FDE, 0, port->membase + LTQ_ASC_CON);
 
 	/* set up to use divisor of 2 */
-	ltq_w32_mask(ASCCON_BRS, 0, port->membase + LTQ_ASC_CON);
+	asc_update_bits(ASCCON_BRS, 0, port->membase + LTQ_ASC_CON);
 
 	/* now we can write the new baudrate into the register */
 	ltq_w32(divisor, port->membase + LTQ_ASC_BG);
 
 	/* turn the baudrate generator back on */
-	ltq_w32_mask(0, ASCCON_R, port->membase + LTQ_ASC_CON);
+	asc_update_bits(0, ASCCON_R, port->membase + LTQ_ASC_CON);
 
 	/* enable rx */
 	ltq_w32(ASCWHBSTATE_SETREN, port->membase + LTQ_ASC_WHBSTATE);
-- 
2.39.2

[PATCH 4.19 02/41] serial: lantiq: Use readl/writel instead of ltq_r32/ltq_w32

[Greg Kroah-Hartman]

From: Songjun Wu <songjun.wu@linux.intel.com>

[ Upstream commit 89b8bd2082bbbccbd95b849b34ff8b6ab3056bf7 ]

Previous implementation uses platform-dependent functions
ltq_w32()/ltq_r32() to access registers. Those functions are not
available for other SoC which uses the same IP.
Change to OS provided readl()/writel() and readb()/writeb(), so
that different SoCs can use the same driver.

Signed-off-by: Songjun Wu <songjun.wu@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Stable-dep-of: 306320034e8f ("serial: lantiq: add missing interrupt ack")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/tty/serial/lantiq.c | 38 ++++++++++++++++++-------------------
 1 file changed, 19 insertions(+), 19 deletions(-)

diff --git a/drivers/tty/serial/lantiq.c b/drivers/tty/serial/lantiq.c
index 848286a12c20b..c8dce404ed0c2 100644
--- a/drivers/tty/serial/lantiq.c
+++ b/drivers/tty/serial/lantiq.c
@@ -145,7 +145,7 @@ lqasc_start_tx(struct uart_port *port)
 static void
 lqasc_stop_rx(struct uart_port *port)
 {
-	ltq_w32(ASCWHBSTATE_CLRREN, port->membase + LTQ_ASC_WHBSTATE);
+	writel(ASCWHBSTATE_CLRREN, port->membase + LTQ_ASC_WHBSTATE);
 }
 
 static int
@@ -154,11 +154,11 @@ lqasc_rx_chars(struct uart_port *port)
 	struct tty_port *tport = &port->state->port;
 	unsigned int ch = 0, rsr = 0, fifocnt;
 
-	fifocnt = ltq_r32(port->membase + LTQ_ASC_FSTAT) & ASCFSTAT_RXFFLMASK;
+	fifocnt = readl(port->membase + LTQ_ASC_FSTAT) & ASCFSTAT_RXFFLMASK;
 	while (fifocnt--) {
 		u8 flag = TTY_NORMAL;
-		ch = ltq_r8(port->membase + LTQ_ASC_RBUF);
-		rsr = (ltq_r32(port->membase + LTQ_ASC_STATE)
+		ch = readb(port->membase + LTQ_ASC_RBUF);
+		rsr = (readl(port->membase + LTQ_ASC_STATE)
 			& ASCSTATE_ANY) | UART_DUMMY_UER_RX;
 		tty_flip_buffer_push(tport);
 		port->icount.rx++;
@@ -218,10 +218,10 @@ lqasc_tx_chars(struct uart_port *port)
 		return;
 	}
 
-	while (((ltq_r32(port->membase + LTQ_ASC_FSTAT) &
+	while (((readl(port->membase + LTQ_ASC_FSTAT) &
 		ASCFSTAT_TXFREEMASK) >> ASCFSTAT_TXFREEOFF) != 0) {
 		if (port->x_char) {
-			ltq_w8(port->x_char, port->membase + LTQ_ASC_TBUF);
+			writeb(port->x_char, port->membase + LTQ_ASC_TBUF);
 			port->icount.tx++;
 			port->x_char = 0;
 			continue;
@@ -230,7 +230,7 @@ lqasc_tx_chars(struct uart_port *port)
 		if (uart_circ_empty(xmit))
 			break;
 
-		ltq_w8(port->state->xmit.buf[port->state->xmit.tail],
+		writeb(port->state->xmit.buf[port->state->xmit.tail],
 			port->membase + LTQ_ASC_TBUF);
 		xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
 		port->icount.tx++;
@@ -246,7 +246,7 @@ lqasc_tx_int(int irq, void *_port)
 	unsigned long flags;
 	struct uart_port *port = (struct uart_port *)_port;
 	spin_lock_irqsave(&ltq_asc_lock, flags);
-	ltq_w32(ASC_IRNCR_TIR, port->membase + LTQ_ASC_IRNCR);
+	writel(ASC_IRNCR_TIR, port->membase + LTQ_ASC_IRNCR);
 	spin_unlock_irqrestore(&ltq_asc_lock, flags);
 	lqasc_start_tx(port);
 	return IRQ_HANDLED;
@@ -271,7 +271,7 @@ lqasc_rx_int(int irq, void *_port)
 	unsigned long flags;
 	struct uart_port *port = (struct uart_port *)_port;
 	spin_lock_irqsave(&ltq_asc_lock, flags);
-	ltq_w32(ASC_IRNCR_RIR, port->membase + LTQ_ASC_IRNCR);
+	writel(ASC_IRNCR_RIR, port->membase + LTQ_ASC_IRNCR);
 	lqasc_rx_chars(port);
 	spin_unlock_irqrestore(&ltq_asc_lock, flags);
 	return IRQ_HANDLED;
@@ -281,7 +281,7 @@ static unsigned int
 lqasc_tx_empty(struct uart_port *port)
 {
 	int status;
-	status = ltq_r32(port->membase + LTQ_ASC_FSTAT) & ASCFSTAT_TXFFLMASK;
+	status = readl(port->membase + LTQ_ASC_FSTAT) & ASCFSTAT_TXFFLMASK;
 	return status ? 0 : TIOCSER_TEMT;
 }
 
@@ -314,12 +314,12 @@ lqasc_startup(struct uart_port *port)
 	asc_update_bits(ASCCLC_DISS | ASCCLC_RMCMASK, (1 << ASCCLC_RMCOFFSET),
 		port->membase + LTQ_ASC_CLC);
 
-	ltq_w32(0, port->membase + LTQ_ASC_PISEL);
-	ltq_w32(
+	writel(0, port->membase + LTQ_ASC_PISEL);
+	writel(
 		((TXFIFO_FL << ASCTXFCON_TXFITLOFF) & ASCTXFCON_TXFITLMASK) |
 		ASCTXFCON_TXFEN | ASCTXFCON_TXFFLU,
 		port->membase + LTQ_ASC_TXFCON);
-	ltq_w32(
+	writel(
 		((RXFIFO_FL << ASCRXFCON_RXFITLOFF) & ASCRXFCON_RXFITLMASK)
 		| ASCRXFCON_RXFEN | ASCRXFCON_RXFFLU,
 		port->membase + LTQ_ASC_RXFCON);
@@ -351,7 +351,7 @@ lqasc_startup(struct uart_port *port)
 		goto err2;
 	}
 
-	ltq_w32(ASC_IRNREN_RX | ASC_IRNREN_ERR | ASC_IRNREN_TX,
+	writel(ASC_IRNREN_RX | ASC_IRNREN_ERR | ASC_IRNREN_TX,
 		port->membase + LTQ_ASC_IRNREN);
 	return 0;
 
@@ -370,7 +370,7 @@ lqasc_shutdown(struct uart_port *port)
 	free_irq(ltq_port->rx_irq, port);
 	free_irq(ltq_port->err_irq, port);
 
-	ltq_w32(0, port->membase + LTQ_ASC_CON);
+	writel(0, port->membase + LTQ_ASC_CON);
 	asc_update_bits(ASCRXFCON_RXFEN, ASCRXFCON_RXFFLU,
 		port->membase + LTQ_ASC_RXFCON);
 	asc_update_bits(ASCTXFCON_TXFEN, ASCTXFCON_TXFFLU,
@@ -462,13 +462,13 @@ lqasc_set_termios(struct uart_port *port,
 	asc_update_bits(ASCCON_BRS, 0, port->membase + LTQ_ASC_CON);
 
 	/* now we can write the new baudrate into the register */
-	ltq_w32(divisor, port->membase + LTQ_ASC_BG);
+	writel(divisor, port->membase + LTQ_ASC_BG);
 
 	/* turn the baudrate generator back on */
 	asc_update_bits(0, ASCCON_R, port->membase + LTQ_ASC_CON);
 
 	/* enable rx */
-	ltq_w32(ASCWHBSTATE_SETREN, port->membase + LTQ_ASC_WHBSTATE);
+	writel(ASCWHBSTATE_SETREN, port->membase + LTQ_ASC_WHBSTATE);
 
 	spin_unlock_irqrestore(&ltq_asc_lock, flags);
 
@@ -579,10 +579,10 @@ lqasc_console_putchar(struct uart_port *port, int ch)
 		return;
 
 	do {
-		fifofree = (ltq_r32(port->membase + LTQ_ASC_FSTAT)
+		fifofree = (readl(port->membase + LTQ_ASC_FSTAT)
 			& ASCFSTAT_TXFREEMASK) >> ASCFSTAT_TXFREEOFF;
 	} while (fifofree == 0);
-	ltq_w8(ch, port->membase + LTQ_ASC_TBUF);
+	writeb(ch, port->membase + LTQ_ASC_TBUF);
 }
 
 static void lqasc_serial_port_write(struct uart_port *port, const char *s,
-- 
2.39.2

[PATCH 4.19 03/41] serial: lantiq: Do not swap register read/writes

[Greg Kroah-Hartman]

From: Hauke Mehrtens <hauke@hauke-m.de>

[ Upstream commit d3a28a53630e1ca10f59562ef560e3f70785cb09 ]

The ltq_r32() and ltq_w32() macros use the __raw_readl() and
__raw_writel() functions which do not swap the value to little endian.
On the big endian vrx200 SoC the UART is operated in big endian IO mode,
the readl() and write() functions convert the value to little endian
first and then the driver does not work any more on this SoC.
Currently the vrx200 SoC selects the CONFIG_SWAP_IO_SPACE option,
without this option the serial driver would work, but PCI devices do not
work any more.

This patch makes the driver use the __raw_readl() and __raw_writel()
functions which do not swap the endianness. On big endian system it is
assumed that the device should be access in big endian IO mode and on a
little endian system it would be access in little endian mode.

Fixes: 89b8bd2082bb ("serial: lantiq: Use readl/writel instead of ltq_r32/ltq_w32")
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Acked-by: John Crispin <john@phrozen.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Stable-dep-of: 306320034e8f ("serial: lantiq: add missing interrupt ack")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/tty/serial/lantiq.c | 36 +++++++++++++++++++-----------------
 1 file changed, 19 insertions(+), 17 deletions(-)

diff --git a/drivers/tty/serial/lantiq.c b/drivers/tty/serial/lantiq.c
index c8dce404ed0c2..de2d051cd7664 100644
--- a/drivers/tty/serial/lantiq.c
+++ b/drivers/tty/serial/lantiq.c
@@ -115,9 +115,9 @@ struct ltq_uart_port {
 
 static inline void asc_update_bits(u32 clear, u32 set, void __iomem *reg)
 {
-	u32 tmp = readl(reg);
+	u32 tmp = __raw_readl(reg);
 
-	writel((tmp & ~clear) | set, reg);
+	__raw_writel((tmp & ~clear) | set, reg);
 }
 
 static inline struct
@@ -145,7 +145,7 @@ lqasc_start_tx(struct uart_port *port)
 static void
 lqasc_stop_rx(struct uart_port *port)
 {
-	writel(ASCWHBSTATE_CLRREN, port->membase + LTQ_ASC_WHBSTATE);
+	__raw_writel(ASCWHBSTATE_CLRREN, port->membase + LTQ_ASC_WHBSTATE);
 }
 
 static int
@@ -154,11 +154,12 @@ lqasc_rx_chars(struct uart_port *port)
 	struct tty_port *tport = &port->state->port;
 	unsigned int ch = 0, rsr = 0, fifocnt;
 
-	fifocnt = readl(port->membase + LTQ_ASC_FSTAT) & ASCFSTAT_RXFFLMASK;
+	fifocnt = __raw_readl(port->membase + LTQ_ASC_FSTAT) &
+		  ASCFSTAT_RXFFLMASK;
 	while (fifocnt--) {
 		u8 flag = TTY_NORMAL;
 		ch = readb(port->membase + LTQ_ASC_RBUF);
-		rsr = (readl(port->membase + LTQ_ASC_STATE)
+		rsr = (__raw_readl(port->membase + LTQ_ASC_STATE)
 			& ASCSTATE_ANY) | UART_DUMMY_UER_RX;
 		tty_flip_buffer_push(tport);
 		port->icount.rx++;
@@ -218,7 +219,7 @@ lqasc_tx_chars(struct uart_port *port)
 		return;
 	}
 
-	while (((readl(port->membase + LTQ_ASC_FSTAT) &
+	while (((__raw_readl(port->membase + LTQ_ASC_FSTAT) &
 		ASCFSTAT_TXFREEMASK) >> ASCFSTAT_TXFREEOFF) != 0) {
 		if (port->x_char) {
 			writeb(port->x_char, port->membase + LTQ_ASC_TBUF);
@@ -246,7 +247,7 @@ lqasc_tx_int(int irq, void *_port)
 	unsigned long flags;
 	struct uart_port *port = (struct uart_port *)_port;
 	spin_lock_irqsave(&ltq_asc_lock, flags);
-	writel(ASC_IRNCR_TIR, port->membase + LTQ_ASC_IRNCR);
+	__raw_writel(ASC_IRNCR_TIR, port->membase + LTQ_ASC_IRNCR);
 	spin_unlock_irqrestore(&ltq_asc_lock, flags);
 	lqasc_start_tx(port);
 	return IRQ_HANDLED;
@@ -271,7 +272,7 @@ lqasc_rx_int(int irq, void *_port)
 	unsigned long flags;
 	struct uart_port *port = (struct uart_port *)_port;
 	spin_lock_irqsave(&ltq_asc_lock, flags);
-	writel(ASC_IRNCR_RIR, port->membase + LTQ_ASC_IRNCR);
+	__raw_writel(ASC_IRNCR_RIR, port->membase + LTQ_ASC_IRNCR);
 	lqasc_rx_chars(port);
 	spin_unlock_irqrestore(&ltq_asc_lock, flags);
 	return IRQ_HANDLED;
@@ -281,7 +282,8 @@ static unsigned int
 lqasc_tx_empty(struct uart_port *port)
 {
 	int status;
-	status = readl(port->membase + LTQ_ASC_FSTAT) & ASCFSTAT_TXFFLMASK;
+	status = __raw_readl(port->membase + LTQ_ASC_FSTAT) &
+		 ASCFSTAT_TXFFLMASK;
 	return status ? 0 : TIOCSER_TEMT;
 }
 
@@ -314,12 +316,12 @@ lqasc_startup(struct uart_port *port)
 	asc_update_bits(ASCCLC_DISS | ASCCLC_RMCMASK, (1 << ASCCLC_RMCOFFSET),
 		port->membase + LTQ_ASC_CLC);
 
-	writel(0, port->membase + LTQ_ASC_PISEL);
-	writel(
+	__raw_writel(0, port->membase + LTQ_ASC_PISEL);
+	__raw_writel(
 		((TXFIFO_FL << ASCTXFCON_TXFITLOFF) & ASCTXFCON_TXFITLMASK) |
 		ASCTXFCON_TXFEN | ASCTXFCON_TXFFLU,
 		port->membase + LTQ_ASC_TXFCON);
-	writel(
+	__raw_writel(
 		((RXFIFO_FL << ASCRXFCON_RXFITLOFF) & ASCRXFCON_RXFITLMASK)
 		| ASCRXFCON_RXFEN | ASCRXFCON_RXFFLU,
 		port->membase + LTQ_ASC_RXFCON);
@@ -351,7 +353,7 @@ lqasc_startup(struct uart_port *port)
 		goto err2;
 	}
 
-	writel(ASC_IRNREN_RX | ASC_IRNREN_ERR | ASC_IRNREN_TX,
+	__raw_writel(ASC_IRNREN_RX | ASC_IRNREN_ERR | ASC_IRNREN_TX,
 		port->membase + LTQ_ASC_IRNREN);
 	return 0;
 
@@ -370,7 +372,7 @@ lqasc_shutdown(struct uart_port *port)
 	free_irq(ltq_port->rx_irq, port);
 	free_irq(ltq_port->err_irq, port);
 
-	writel(0, port->membase + LTQ_ASC_CON);
+	__raw_writel(0, port->membase + LTQ_ASC_CON);
 	asc_update_bits(ASCRXFCON_RXFEN, ASCRXFCON_RXFFLU,
 		port->membase + LTQ_ASC_RXFCON);
 	asc_update_bits(ASCTXFCON_TXFEN, ASCTXFCON_TXFFLU,
@@ -462,13 +464,13 @@ lqasc_set_termios(struct uart_port *port,
 	asc_update_bits(ASCCON_BRS, 0, port->membase + LTQ_ASC_CON);
 
 	/* now we can write the new baudrate into the register */
-	writel(divisor, port->membase + LTQ_ASC_BG);
+	__raw_writel(divisor, port->membase + LTQ_ASC_BG);
 
 	/* turn the baudrate generator back on */
 	asc_update_bits(0, ASCCON_R, port->membase + LTQ_ASC_CON);
 
 	/* enable rx */
-	writel(ASCWHBSTATE_SETREN, port->membase + LTQ_ASC_WHBSTATE);
+	__raw_writel(ASCWHBSTATE_SETREN, port->membase + LTQ_ASC_WHBSTATE);
 
 	spin_unlock_irqrestore(&ltq_asc_lock, flags);
 
@@ -579,7 +581,7 @@ lqasc_console_putchar(struct uart_port *port, int ch)
 		return;
 
 	do {
-		fifofree = (readl(port->membase + LTQ_ASC_FSTAT)
+		fifofree = (__raw_readl(port->membase + LTQ_ASC_FSTAT)
 			& ASCFSTAT_TXFREEMASK) >> ASCFSTAT_TXFREEOFF;
 	} while (fifofree == 0);
 	writeb(ch, port->membase + LTQ_ASC_TBUF);
-- 
2.39.2

[PATCH 4.19 04/41] serial: lantiq: add missing interrupt ack

[Greg Kroah-Hartman]

From: Bernhard Seibold <mail@bernhard-seibold.de>

[ Upstream commit 306320034e8fbe7ee1cc4f5269c55658b4612048 ]

Currently, the error interrupt is never acknowledged, so once active it
will stay active indefinitely, causing the handler to be called in an
infinite loop.

Fixes: 2f0fc4159a6a ("SERIAL: Lantiq: Add driver for MIPS Lantiq SOCs.")
Cc: <stable@vger.kernel.org>
Signed-off-by: Bernhard Seibold <mail@bernhard-seibold.de>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Message-ID: <20230602133029.546-1-mail@bernhard-seibold.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/tty/serial/lantiq.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/tty/serial/lantiq.c b/drivers/tty/serial/lantiq.c
index de2d051cd7664..6cd168cb673fd 100644
--- a/drivers/tty/serial/lantiq.c
+++ b/drivers/tty/serial/lantiq.c
@@ -259,6 +259,7 @@ lqasc_err_int(int irq, void *_port)
 	unsigned long flags;
 	struct uart_port *port = (struct uart_port *)_port;
 	spin_lock_irqsave(&ltq_asc_lock, flags);
+	__raw_writel(ASC_IRNCR_EIR, port->membase + LTQ_ASC_IRNCR);
 	/* clear any pending interrupts */
 	asc_update_bits(0, ASCWHBSTATE_CLRPE | ASCWHBSTATE_CLRFE |
 		ASCWHBSTATE_CLRROE, port->membase + LTQ_ASC_WHBSTATE);
-- 
2.39.2

[PATCH 4.19 05/41] nilfs2: reject devices with insufficient block count

[Greg Kroah-Hartman]

From: Ryusuke Konishi <konishi.ryusuke@gmail.com>

commit 92c5d1b860e9581d64baca76779576c0ab0d943d upstream.

The current sanity check for nilfs2 geometry information lacks checks for
the number of segments stored in superblocks, so even for device images
that have been destructively truncated or have an unusually high number of
segments, the mount operation may succeed.

This causes out-of-bounds block I/O on file system block reads or log
writes to the segments, the latter in particular causing
"a_ops->writepages" to repeatedly fail, resulting in sync_inodes_sb() to
hang.

Fix this issue by checking the number of segments stored in the superblock
and avoiding mounting devices that can cause out-of-bounds accesses.  To
eliminate the possibility of overflow when calculating the number of
blocks required for the device from the number of segments, this also adds
a helper function to calculate the upper bound on the number of segments
and inserts a check using it.

Link: https://lkml.kernel.org/r/20230526021332.3431-1-konishi.ryusuke@gmail.com
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Reported-by: syzbot+7d50f1e54a12ba3aeae2@syzkaller.appspotmail.com
  Link: https://syzkaller.appspot.com/bug?extid=7d50f1e54a12ba3aeae2
Tested-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/nilfs2/the_nilfs.c |   44 +++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 43 insertions(+), 1 deletion(-)

--- a/fs/nilfs2/the_nilfs.c
+++ b/fs/nilfs2/the_nilfs.c
@@ -375,6 +375,18 @@ unsigned long nilfs_nrsvsegs(struct the_
 				  100));
 }
 
+/**
+ * nilfs_max_segment_count - calculate the maximum number of segments
+ * @nilfs: nilfs object
+ */
+static u64 nilfs_max_segment_count(struct the_nilfs *nilfs)
+{
+	u64 max_count = U64_MAX;
+
+	do_div(max_count, nilfs->ns_blocks_per_segment);
+	return min_t(u64, max_count, ULONG_MAX);
+}
+
 void nilfs_set_nsegments(struct the_nilfs *nilfs, unsigned long nsegs)
 {
 	nilfs->ns_nsegments = nsegs;
@@ -384,6 +396,8 @@ void nilfs_set_nsegments(struct the_nilf
 static int nilfs_store_disk_layout(struct the_nilfs *nilfs,
 				   struct nilfs_super_block *sbp)
 {
+	u64 nsegments, nblocks;
+
 	if (le32_to_cpu(sbp->s_rev_level) < NILFS_MIN_SUPP_REV) {
 		nilfs_msg(nilfs->ns_sb, KERN_ERR,
 			  "unsupported revision (superblock rev.=%d.%d, current rev.=%d.%d). Please check the version of mkfs.nilfs(2).",
@@ -430,7 +444,35 @@ static int nilfs_store_disk_layout(struc
 		return -EINVAL;
 	}
 
-	nilfs_set_nsegments(nilfs, le64_to_cpu(sbp->s_nsegments));
+	nsegments = le64_to_cpu(sbp->s_nsegments);
+	if (nsegments > nilfs_max_segment_count(nilfs)) {
+		nilfs_msg(nilfs->ns_sb, KERN_ERR,
+			  "segment count %llu exceeds upper limit (%llu segments)",
+			  (unsigned long long)nsegments,
+			  (unsigned long long)nilfs_max_segment_count(nilfs));
+		return -EINVAL;
+	}
+
+	nblocks = (u64)i_size_read(nilfs->ns_sb->s_bdev->bd_inode) >>
+		nilfs->ns_sb->s_blocksize_bits;
+	if (nblocks) {
+		u64 min_block_count = nsegments * nilfs->ns_blocks_per_segment;
+		/*
+		 * To avoid failing to mount early device images without a
+		 * second superblock, exclude that block count from the
+		 * "min_block_count" calculation.
+		 */
+
+		if (nblocks < min_block_count) {
+			nilfs_msg(nilfs->ns_sb, KERN_ERR,
+				  "total number of segment blocks %llu exceeds device size (%llu blocks)",
+				  (unsigned long long)min_block_count,
+				  (unsigned long long)nblocks);
+			return -EINVAL;
+		}
+	}
+
+	nilfs_set_nsegments(nilfs, nsegments);
 	nilfs->ns_crc_seed = le32_to_cpu(sbp->s_crc_seed);
 	return 0;
 }

[PATCH 4.19 06/41] x86/purgatory: remove PGO flags

[Greg Kroah-Hartman]

From: Ricardo Ribalda <ribalda@chromium.org>

commit 97b6b9cbba40a21c1d9a344d5c1991f8cfbf136e upstream.

If profile-guided optimization is enabled, the purgatory ends up with
multiple .text sections.  This is not supported by kexec and crashes the
system.

Link: https://lkml.kernel.org/r/20230321-kexec_clang16-v7-2-b05c520b7296@chromium.org
Fixes: 930457057abe ("kernel/kexec_file.c: split up __kexec_load_puragory")
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Cc: <stable@vger.kernel.org>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Baoquan He <bhe@redhat.com>
Cc: Borislav Petkov (AMD) <bp@alien8.de>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Palmer Dabbelt <palmer@rivosinc.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Philipp Rudo <prudo@redhat.com>
Cc: Ross Zwisler <zwisler@google.com>
Cc: Simon Horman <horms@kernel.org>
Cc: Steven Rostedt (Google) <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tom Rix <trix@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ricardo Ribalda Delgado <ribalda@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/x86/purgatory/Makefile |    5 +++++
 1 file changed, 5 insertions(+)

--- a/arch/x86/purgatory/Makefile
+++ b/arch/x86/purgatory/Makefile
@@ -12,6 +12,11 @@ $(obj)/string.o: $(srctree)/arch/x86/boo
 $(obj)/sha256.o: $(srctree)/lib/sha256.c FORCE
 	$(call if_changed_rule,cc_o_c)
 
+# When profile-guided optimization is enabled, llvm emits two different
+# overlapping text sections, which is not supported by kexec. Remove profile
+# optimization flags.
+KBUILD_CFLAGS := $(filter-out -fprofile-sample-use=% -fprofile-use=%,$(KBUILD_CFLAGS))
+
 LDFLAGS_purgatory.ro := -e purgatory_start -r --no-undefined -nostdlib -z nodefaultlib
 targets += purgatory.ro
 

[PATCH 4.19 07/41] ipmi: Make the smi watcher be disabled immediately when not needed

[Greg Kroah-Hartman]

From: Corey Minyard <cminyard@mvista.com>

commit e1891cffd4c4896a899337a243273f0e23c028df upstream.

The code to tell the lower layer to enable or disable watching for
certain things was lazy in disabling, it waited until a timer tick
to see if a disable was necessary.  Not a really big deal, but it
could be improved.

Modify the code to enable and disable watching immediately and don't
do it from the background timer any more.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
Tested-by: Kamlakant Patel <kamlakant.patel@cavium.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/char/ipmi/ipmi_msghandler.c |  164 +++++++++++++++++++-----------------
 drivers/char/ipmi/ipmi_si_intf.c    |    2 
 drivers/char/ipmi/ipmi_ssif.c       |    2 
 include/linux/ipmi_smi.h            |   17 ---
 4 files changed, 96 insertions(+), 89 deletions(-)

--- a/drivers/char/ipmi/ipmi_msghandler.c
+++ b/drivers/char/ipmi/ipmi_msghandler.c
@@ -541,15 +541,20 @@ struct ipmi_smi {
 	atomic_t         event_waiters;
 	unsigned int     ticks_to_req_ev;
 
+	spinlock_t       watch_lock; /* For dealing with watch stuff below. */
+
 	/* How many users are waiting for commands? */
-	atomic_t         command_waiters;
+	unsigned int     command_waiters;
 
 	/* How many users are waiting for watchdogs? */
-	atomic_t         watchdog_waiters;
+	unsigned int     watchdog_waiters;
+
+	/* How many users are waiting for message responses? */
+	unsigned int     response_waiters;
 
 	/*
 	 * Tells what the lower layer has last been asked to watch for,
-	 * messages and/or watchdogs.  Protected by xmit_msgs_lock.
+	 * messages and/or watchdogs.  Protected by watch_lock.
 	 */
 	unsigned int     last_watch_mask;
 
@@ -945,6 +950,64 @@ static void deliver_err_response(struct
 	deliver_local_response(intf, msg);
 }
 
+static void smi_add_watch(struct ipmi_smi *intf, unsigned int flags)
+{
+	unsigned long iflags;
+
+	if (!intf->handlers->set_need_watch)
+		return;
+
+	spin_lock_irqsave(&intf->watch_lock, iflags);
+	if (flags & IPMI_WATCH_MASK_CHECK_MESSAGES)
+		intf->response_waiters++;
+
+	if (flags & IPMI_WATCH_MASK_CHECK_WATCHDOG)
+		intf->watchdog_waiters++;
+
+	if (flags & IPMI_WATCH_MASK_CHECK_COMMANDS)
+		intf->command_waiters++;
+
+	if ((intf->last_watch_mask & flags) != flags) {
+		intf->last_watch_mask |= flags;
+		intf->handlers->set_need_watch(intf->send_info,
+					       intf->last_watch_mask);
+	}
+	spin_unlock_irqrestore(&intf->watch_lock, iflags);
+}
+
+static void smi_remove_watch(struct ipmi_smi *intf, unsigned int flags)
+{
+	unsigned long iflags;
+
+	if (!intf->handlers->set_need_watch)
+		return;
+
+	spin_lock_irqsave(&intf->watch_lock, iflags);
+	if (flags & IPMI_WATCH_MASK_CHECK_MESSAGES)
+		intf->response_waiters--;
+
+	if (flags & IPMI_WATCH_MASK_CHECK_WATCHDOG)
+		intf->watchdog_waiters--;
+
+	if (flags & IPMI_WATCH_MASK_CHECK_COMMANDS)
+		intf->command_waiters--;
+
+	flags = 0;
+	if (intf->response_waiters)
+		flags |= IPMI_WATCH_MASK_CHECK_MESSAGES;
+	if (intf->watchdog_waiters)
+		flags |= IPMI_WATCH_MASK_CHECK_WATCHDOG;
+	if (intf->command_waiters)
+		flags |= IPMI_WATCH_MASK_CHECK_COMMANDS;
+
+	if (intf->last_watch_mask != flags) {
+		intf->last_watch_mask = flags;
+		intf->handlers->set_need_watch(intf->send_info,
+					       intf->last_watch_mask);
+	}
+	spin_unlock_irqrestore(&intf->watch_lock, iflags);
+}
+
 /*
  * Find the next sequence number not being used and add the given
  * message with the given timeout to the sequence table.  This must be
@@ -988,6 +1051,7 @@ static int intf_next_seq(struct ipmi_smi
 		*seq = i;
 		*seqid = intf->seq_table[i].seqid;
 		intf->curr_seq = (i+1)%IPMI_IPMB_NUM_SEQ;
+		smi_add_watch(intf, IPMI_WATCH_MASK_CHECK_MESSAGES);
 		need_waiter(intf);
 	} else {
 		rv = -EAGAIN;
@@ -1026,6 +1090,7 @@ static int intf_find_seq(struct ipmi_smi
 				&& (ipmi_addr_equal(addr, &msg->addr))) {
 			*recv_msg = msg;
 			intf->seq_table[seq].inuse = 0;
+			smi_remove_watch(intf, IPMI_WATCH_MASK_CHECK_MESSAGES);
 			rv = 0;
 		}
 	}
@@ -1087,6 +1152,7 @@ static int intf_err_seq(struct ipmi_smi
 		struct seq_table *ent = &intf->seq_table[seq];
 
 		ent->inuse = 0;
+		smi_remove_watch(intf, IPMI_WATCH_MASK_CHECK_MESSAGES);
 		msg = ent->recv_msg;
 		rv = 0;
 	}
@@ -1098,30 +1164,6 @@ static int intf_err_seq(struct ipmi_smi
 	return rv;
 }
 
-/* Must be called with xmit_msgs_lock held. */
-static void smi_tell_to_watch(struct ipmi_smi *intf,
-			      unsigned int flags,
-			      struct ipmi_smi_msg *smi_msg)
-{
-	if (flags & IPMI_WATCH_MASK_CHECK_MESSAGES) {
-		if (!smi_msg)
-			return;
-
-		if (!smi_msg->needs_response)
-			return;
-	}
-
-	if (!intf->handlers->set_need_watch)
-		return;
-
-	if ((intf->last_watch_mask & flags) == flags)
-		return;
-
-	intf->last_watch_mask |= flags;
-	intf->handlers->set_need_watch(intf->send_info,
-				       intf->last_watch_mask);
-}
-
 static void free_user_work(struct work_struct *work)
 {
 	struct ipmi_user *user = container_of(work, struct ipmi_user,
@@ -1198,12 +1240,9 @@ int ipmi_create_user(unsigned int
 	spin_lock_irqsave(&intf->seq_lock, flags);
 	list_add_rcu(&new_user->link, &intf->users);
 	spin_unlock_irqrestore(&intf->seq_lock, flags);
-	if (handler->ipmi_watchdog_pretimeout) {
+	if (handler->ipmi_watchdog_pretimeout)
 		/* User wants pretimeouts, so make sure to watch for them. */
-		if (atomic_inc_return(&intf->watchdog_waiters) == 1)
-			smi_tell_to_watch(intf, IPMI_WATCH_MASK_CHECK_WATCHDOG,
-					  NULL);
-	}
+		smi_add_watch(intf, IPMI_WATCH_MASK_CHECK_WATCHDOG);
 	srcu_read_unlock(&ipmi_interfaces_srcu, index);
 	*user = new_user;
 	return 0;
@@ -1276,7 +1315,7 @@ static void _ipmi_destroy_user(struct ip
 		user->handler->shutdown(user->handler_data);
 
 	if (user->handler->ipmi_watchdog_pretimeout)
-		atomic_dec(&intf->watchdog_waiters);
+		smi_remove_watch(intf, IPMI_WATCH_MASK_CHECK_WATCHDOG);
 
 	if (user->gets_events)
 		atomic_dec(&intf->event_waiters);
@@ -1289,6 +1328,7 @@ static void _ipmi_destroy_user(struct ip
 		if (intf->seq_table[i].inuse
 		    && (intf->seq_table[i].recv_msg->user == user)) {
 			intf->seq_table[i].inuse = 0;
+			smi_remove_watch(intf, IPMI_WATCH_MASK_CHECK_MESSAGES);
 			ipmi_free_recv_msg(intf->seq_table[i].recv_msg);
 		}
 	}
@@ -1634,8 +1674,7 @@ int ipmi_register_for_cmd(struct ipmi_us
 		goto out_unlock;
 	}
 
-	if (atomic_inc_return(&intf->command_waiters) == 1)
-		smi_tell_to_watch(intf, IPMI_WATCH_MASK_CHECK_COMMANDS, NULL);
+	smi_add_watch(intf, IPMI_WATCH_MASK_CHECK_COMMANDS);
 
 	list_add_rcu(&rcvr->link, &intf->cmd_rcvrs);
 
@@ -1685,7 +1724,7 @@ int ipmi_unregister_for_cmd(struct ipmi_
 	synchronize_rcu();
 	release_ipmi_user(user, index);
 	while (rcvrs) {
-		atomic_dec(&intf->command_waiters);
+		smi_remove_watch(intf, IPMI_WATCH_MASK_CHECK_COMMANDS);
 		rcvr = rcvrs;
 		rcvrs = rcvr->next;
 		kfree(rcvr);
@@ -1813,8 +1852,6 @@ static void smi_send(struct ipmi_smi *in
 		spin_lock_irqsave(&intf->xmit_msgs_lock, flags);
 	smi_msg = smi_add_send_msg(intf, smi_msg, priority);
 
-	smi_tell_to_watch(intf, IPMI_WATCH_MASK_CHECK_MESSAGES, smi_msg);
-
 	if (!run_to_completion)
 		spin_unlock_irqrestore(&intf->xmit_msgs_lock, flags);
 
@@ -2014,9 +2051,6 @@ static int i_ipmi_req_ipmb(struct ipmi_s
 				ipmb_seq, broadcast,
 				source_address, source_lun);
 
-		/* We will be getting a response in the BMC message queue. */
-		smi_msg->needs_response = true;
-
 		/*
 		 * Copy the message into the recv message data, so we
 		 * can retransmit it later if necessary.
@@ -2204,7 +2238,6 @@ static int i_ipmi_request(struct ipmi_us
 			goto out;
 		}
 	}
-	smi_msg->needs_response = false;
 
 	rcu_read_lock();
 	if (intf->in_shutdown) {
@@ -3425,9 +3458,8 @@ int ipmi_add_smi(struct module         *
 	INIT_LIST_HEAD(&intf->xmit_msgs);
 	INIT_LIST_HEAD(&intf->hp_xmit_msgs);
 	spin_lock_init(&intf->events_lock);
+	spin_lock_init(&intf->watch_lock);
 	atomic_set(&intf->event_waiters, 0);
-	atomic_set(&intf->watchdog_waiters, 0);
-	atomic_set(&intf->command_waiters, 0);
 	intf->ticks_to_req_ev = IPMI_REQUEST_EV_TIME;
 	INIT_LIST_HEAD(&intf->waiting_events);
 	intf->waiting_events_count = 0;
@@ -4447,8 +4479,6 @@ static void smi_recv_tasklet(unsigned lo
 		}
 	}
 
-	smi_tell_to_watch(intf, IPMI_WATCH_MASK_CHECK_MESSAGES, newmsg);
-
 	if (!run_to_completion)
 		spin_unlock_irqrestore(&intf->xmit_msgs_lock, flags);
 	if (newmsg)
@@ -4576,7 +4606,7 @@ static void check_msg_timeout(struct ipm
 			      struct list_head *timeouts,
 			      unsigned long timeout_period,
 			      int slot, unsigned long *flags,
-			      unsigned int *watch_mask)
+			      bool *need_timer)
 {
 	struct ipmi_recv_msg *msg;
 
@@ -4588,13 +4618,14 @@ static void check_msg_timeout(struct ipm
 
 	if (timeout_period < ent->timeout) {
 		ent->timeout -= timeout_period;
-		*watch_mask |= IPMI_WATCH_MASK_CHECK_MESSAGES;
+		*need_timer = true;
 		return;
 	}
 
 	if (ent->retries_left == 0) {
 		/* The message has used all its retries. */
 		ent->inuse = 0;
+		smi_remove_watch(intf, IPMI_WATCH_MASK_CHECK_MESSAGES);
 		msg = ent->recv_msg;
 		list_add_tail(&msg->link, timeouts);
 		if (ent->broadcast)
@@ -4607,7 +4638,7 @@ static void check_msg_timeout(struct ipm
 		struct ipmi_smi_msg *smi_msg;
 		/* More retries, send again. */
 
-		*watch_mask |= IPMI_WATCH_MASK_CHECK_MESSAGES;
+		*need_timer = true;
 
 		/*
 		 * Start with the max timer, set to normal timer after
@@ -4652,20 +4683,20 @@ static void check_msg_timeout(struct ipm
 	}
 }
 
-static unsigned int ipmi_timeout_handler(struct ipmi_smi *intf,
-					 unsigned long timeout_period)
+static bool ipmi_timeout_handler(struct ipmi_smi *intf,
+				 unsigned long timeout_period)
 {
 	struct list_head     timeouts;
 	struct ipmi_recv_msg *msg, *msg2;
 	unsigned long        flags;
 	int                  i;
-	unsigned int         watch_mask = 0;
+	bool                 need_timer = false;
 
 	if (!intf->bmc_registered) {
 		kref_get(&intf->refcount);
 		if (!schedule_work(&intf->bmc_reg_work)) {
 			kref_put(&intf->refcount, intf_free);
-			watch_mask |= IPMI_WATCH_MASK_INTERNAL;
+			need_timer = true;
 		}
 	}
 
@@ -4685,7 +4716,7 @@ static unsigned int ipmi_timeout_handler
 	for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++)
 		check_msg_timeout(intf, &intf->seq_table[i],
 				  &timeouts, timeout_period, i,
-				  &flags, &watch_mask);
+				  &flags, &need_timer);
 	spin_unlock_irqrestore(&intf->seq_lock, flags);
 
 	list_for_each_entry_safe(msg, msg2, &timeouts, link)
@@ -4716,7 +4747,7 @@ static unsigned int ipmi_timeout_handler
 
 	tasklet_schedule(&intf->recv_tasklet);
 
-	return watch_mask;
+	return need_timer;
 }
 
 static void ipmi_request_event(struct ipmi_smi *intf)
@@ -4736,9 +4767,8 @@ static atomic_t stop_operation;
 static void ipmi_timeout(struct timer_list *unused)
 {
 	struct ipmi_smi *intf;
-	unsigned int watch_mask = 0;
+	bool need_timer = false;
 	int index;
-	unsigned long flags;
 
 	if (atomic_read(&stop_operation))
 		return;
@@ -4751,28 +4781,14 @@ static void ipmi_timeout(struct timer_li
 				ipmi_request_event(intf);
 				intf->ticks_to_req_ev = IPMI_REQUEST_EV_TIME;
 			}
-			watch_mask |= IPMI_WATCH_MASK_INTERNAL;
+			need_timer = true;
 		}
 
-		if (atomic_read(&intf->watchdog_waiters))
-			watch_mask |= IPMI_WATCH_MASK_CHECK_WATCHDOG;
-
-		if (atomic_read(&intf->command_waiters))
-			watch_mask |= IPMI_WATCH_MASK_CHECK_COMMANDS;
-
-		watch_mask |= ipmi_timeout_handler(intf, IPMI_TIMEOUT_TIME);
-
-		spin_lock_irqsave(&intf->xmit_msgs_lock, flags);
-		if (watch_mask != intf->last_watch_mask &&
-					intf->handlers->set_need_watch)
-			intf->handlers->set_need_watch(intf->send_info,
-						       watch_mask);
-		intf->last_watch_mask = watch_mask;
-		spin_unlock_irqrestore(&intf->xmit_msgs_lock, flags);
+		need_timer |= ipmi_timeout_handler(intf, IPMI_TIMEOUT_TIME);
 	}
 	srcu_read_unlock(&ipmi_interfaces_srcu, index);
 
-	if (watch_mask)
+	if (need_timer)
 		mod_timer(&ipmi_timer, jiffies + IPMI_TIMEOUT_JIFFIES);
 }
 
--- a/drivers/char/ipmi/ipmi_si_intf.c
+++ b/drivers/char/ipmi/ipmi_si_intf.c
@@ -1079,7 +1079,7 @@ static void set_need_watch(void *send_in
 	unsigned long flags;
 	int enable;
 
-	enable = !!(watch_mask & ~IPMI_WATCH_MASK_INTERNAL);
+	enable = !!watch_mask;
 
 	atomic_set(&smi_info->need_watch, enable);
 	spin_lock_irqsave(&smi_info->si_lock, flags);
--- a/drivers/char/ipmi/ipmi_ssif.c
+++ b/drivers/char/ipmi/ipmi_ssif.c
@@ -1159,7 +1159,7 @@ static void ssif_set_need_watch(void *se
 
 	if (watch_mask & IPMI_WATCH_MASK_CHECK_MESSAGES)
 		timeout = SSIF_WATCH_MSG_TIMEOUT;
-	else if (watch_mask & ~IPMI_WATCH_MASK_INTERNAL)
+	else if (watch_mask)
 		timeout = SSIF_WATCH_WATCHDOG_TIMEOUT;
 
 	flags = ipmi_ssif_lock_cond(ssif_info, &oflags);
--- a/include/linux/ipmi_smi.h
+++ b/include/linux/ipmi_smi.h
@@ -32,14 +32,11 @@ typedef struct ipmi_smi *ipmi_smi_t;
 
 /*
  * Flags for set_check_watch() below.  Tells if the SMI should be
- * waiting for watchdog timeouts, commands and/or messages.  There is
- * also an internal flag for the message handler, SMIs should ignore
- * it.
+ * waiting for watchdog timeouts, commands and/or messages.
  */
-#define IPMI_WATCH_MASK_INTERNAL	(1 << 0)
-#define IPMI_WATCH_MASK_CHECK_MESSAGES	(1 << 1)
-#define IPMI_WATCH_MASK_CHECK_WATCHDOG	(1 << 2)
-#define IPMI_WATCH_MASK_CHECK_COMMANDS	(1 << 3)
+#define IPMI_WATCH_MASK_CHECK_MESSAGES	(1 << 0)
+#define IPMI_WATCH_MASK_CHECK_WATCHDOG	(1 << 1)
+#define IPMI_WATCH_MASK_CHECK_COMMANDS	(1 << 2)
 
 /*
  * Messages to/from the lower layer.  The smi interface will take one
@@ -67,12 +64,6 @@ struct ipmi_smi_msg {
 	unsigned char rsp[IPMI_MAX_MSG_LENGTH];
 
 	/*
-	 * There should be a response message coming back in the BMC
-	 * message queue.
-	 */
-	bool needs_response;
-
-	/*
 	 * Will be called when the system is done with the message
 	 * (presumably to free it).
 	 */

[PATCH 4.19 08/41] ipmi: move message error checking to avoid deadlock

[Greg Kroah-Hartman]

From: Tony Camuso <tcamuso@redhat.com>

commit 383035211c79d4d98481a09ad429b31c7dbf22bd upstream.

V1->V2: in handle_one_rcv_msg, if data_size > 2, set requeue to zero and
        goto out instead of calling ipmi_free_msg.
        Kosuke Tatsukawa <tatsu@ab.jp.nec.com>

In the source stack trace below, function set_need_watch tries to
take out the same si_lock that was taken earlier by ipmi_thread.

ipmi_thread() [drivers/char/ipmi/ipmi_si_intf.c:995]
 smi_event_handler() [drivers/char/ipmi/ipmi_si_intf.c:765]
  handle_transaction_done() [drivers/char/ipmi/ipmi_si_intf.c:555]
   deliver_recv_msg() [drivers/char/ipmi/ipmi_si_intf.c:283]
    ipmi_smi_msg_received() [drivers/char/ipmi/ipmi_msghandler.c:4503]
     intf_err_seq() [drivers/char/ipmi/ipmi_msghandler.c:1149]
      smi_remove_watch() [drivers/char/ipmi/ipmi_msghandler.c:999]
       set_need_watch() [drivers/char/ipmi/ipmi_si_intf.c:1066]

Upstream commit e1891cffd4c4896a899337a243273f0e23c028df adds code to
ipmi_smi_msg_received() to call smi_remove_watch() via intf_err_seq()
and this seems to be causing the deadlock.

commit e1891cffd4c4896a899337a243273f0e23c028df
Author: Corey Minyard <cminyard@mvista.com>
Date:   Wed Oct 24 15:17:04 2018 -0500
    ipmi: Make the smi watcher be disabled immediately when not needed

The fix is to put all messages in the queue and move the message
checking code out of ipmi_smi_msg_received and into handle_one_recv_msg,
which processes the message checking after ipmi_thread releases its
locks.

Additionally,Kosuke Tatsukawa <tatsu@ab.jp.nec.com> reported that
handle_new_recv_msgs calls ipmi_free_msg when handle_one_rcv_msg returns
zero, so that the call to ipmi_free_msg in handle_one_rcv_msg introduced
another panic when "ipmitool sensor list" was run in a loop. He
submitted this part of the patch.

+free_msg:
+               requeue = 0;
+               goto out;

Reported by: Osamu Samukawa <osa-samukawa@tg.jp.nec.com>
Characterized by: Kosuke Tatsukawa <tatsu@ab.jp.nec.com>
Signed-off-by: Tony Camuso <tcamuso@redhat.com>
Fixes: e1891cffd4c4 ("ipmi: Make the smi watcher be disabled immediately when not needed")
Cc: stable@vger.kernel.org # 5.1
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/char/ipmi/ipmi_msghandler.c |  114 ++++++++++++++++++------------------
 1 file changed, 57 insertions(+), 57 deletions(-)

--- a/drivers/char/ipmi/ipmi_msghandler.c
+++ b/drivers/char/ipmi/ipmi_msghandler.c
@@ -4239,7 +4239,53 @@ static int handle_one_recv_msg(struct ip
 	int chan;
 
 	ipmi_debug_msg("Recv:", msg->rsp, msg->rsp_size);
-	if (msg->rsp_size < 2) {
+
+	if ((msg->data_size >= 2)
+	    && (msg->data[0] == (IPMI_NETFN_APP_REQUEST << 2))
+	    && (msg->data[1] == IPMI_SEND_MSG_CMD)
+	    && (msg->user_data == NULL)) {
+
+		if (intf->in_shutdown)
+			goto free_msg;
+
+		/*
+		 * This is the local response to a command send, start
+		 * the timer for these.  The user_data will not be
+		 * NULL if this is a response send, and we will let
+		 * response sends just go through.
+		 */
+
+		/*
+		 * Check for errors, if we get certain errors (ones
+		 * that mean basically we can try again later), we
+		 * ignore them and start the timer.  Otherwise we
+		 * report the error immediately.
+		 */
+		if ((msg->rsp_size >= 3) && (msg->rsp[2] != 0)
+		    && (msg->rsp[2] != IPMI_NODE_BUSY_ERR)
+		    && (msg->rsp[2] != IPMI_LOST_ARBITRATION_ERR)
+		    && (msg->rsp[2] != IPMI_BUS_ERR)
+		    && (msg->rsp[2] != IPMI_NAK_ON_WRITE_ERR)) {
+			int ch = msg->rsp[3] & 0xf;
+			struct ipmi_channel *chans;
+
+			/* Got an error sending the message, handle it. */
+
+			chans = READ_ONCE(intf->channel_list)->c;
+			if ((chans[ch].medium == IPMI_CHANNEL_MEDIUM_8023LAN)
+			    || (chans[ch].medium == IPMI_CHANNEL_MEDIUM_ASYNC))
+				ipmi_inc_stat(intf, sent_lan_command_errs);
+			else
+				ipmi_inc_stat(intf, sent_ipmb_command_errs);
+			intf_err_seq(intf, msg->msgid, msg->rsp[2]);
+		} else
+			/* The message was sent, start the timer. */
+			intf_start_seq_timer(intf, msg->msgid);
+free_msg:
+		requeue = 0;
+		goto out;
+
+	} else if (msg->rsp_size < 2) {
 		/* Message is too small to be correct. */
 		dev_warn(intf->si_dev,
 			 PFX "BMC returned to small a message for netfn %x cmd %x, got %d bytes\n",
@@ -4496,62 +4542,16 @@ void ipmi_smi_msg_received(struct ipmi_s
 	unsigned long flags = 0; /* keep us warning-free. */
 	int run_to_completion = intf->run_to_completion;
 
-	if ((msg->data_size >= 2)
-	    && (msg->data[0] == (IPMI_NETFN_APP_REQUEST << 2))
-	    && (msg->data[1] == IPMI_SEND_MSG_CMD)
-	    && (msg->user_data == NULL)) {
-
-		if (intf->in_shutdown)
-			goto free_msg;
-
-		/*
-		 * This is the local response to a command send, start
-		 * the timer for these.  The user_data will not be
-		 * NULL if this is a response send, and we will let
-		 * response sends just go through.
-		 */
-
-		/*
-		 * Check for errors, if we get certain errors (ones
-		 * that mean basically we can try again later), we
-		 * ignore them and start the timer.  Otherwise we
-		 * report the error immediately.
-		 */
-		if ((msg->rsp_size >= 3) && (msg->rsp[2] != 0)
-		    && (msg->rsp[2] != IPMI_NODE_BUSY_ERR)
-		    && (msg->rsp[2] != IPMI_LOST_ARBITRATION_ERR)
-		    && (msg->rsp[2] != IPMI_BUS_ERR)
-		    && (msg->rsp[2] != IPMI_NAK_ON_WRITE_ERR)) {
-			int ch = msg->rsp[3] & 0xf;
-			struct ipmi_channel *chans;
-
-			/* Got an error sending the message, handle it. */
-
-			chans = READ_ONCE(intf->channel_list)->c;
-			if ((chans[ch].medium == IPMI_CHANNEL_MEDIUM_8023LAN)
-			    || (chans[ch].medium == IPMI_CHANNEL_MEDIUM_ASYNC))
-				ipmi_inc_stat(intf, sent_lan_command_errs);
-			else
-				ipmi_inc_stat(intf, sent_ipmb_command_errs);
-			intf_err_seq(intf, msg->msgid, msg->rsp[2]);
-		} else
-			/* The message was sent, start the timer. */
-			intf_start_seq_timer(intf, msg->msgid);
-
-free_msg:
-		ipmi_free_smi_msg(msg);
-	} else {
-		/*
-		 * To preserve message order, we keep a queue and deliver from
-		 * a tasklet.
-		 */
-		if (!run_to_completion)
-			spin_lock_irqsave(&intf->waiting_rcv_msgs_lock, flags);
-		list_add_tail(&msg->link, &intf->waiting_rcv_msgs);
-		if (!run_to_completion)
-			spin_unlock_irqrestore(&intf->waiting_rcv_msgs_lock,
-					       flags);
-	}
+	/*
+	 * To preserve message order, we keep a queue and deliver from
+	 * a tasklet.
+	 */
+	if (!run_to_completion)
+		spin_lock_irqsave(&intf->waiting_rcv_msgs_lock, flags);
+	list_add_tail(&msg->link, &intf->waiting_rcv_msgs);
+	if (!run_to_completion)
+		spin_unlock_irqrestore(&intf->waiting_rcv_msgs_lock,
+				       flags);
 
 	if (!run_to_completion)
 		spin_lock_irqsave(&intf->xmit_msgs_lock, flags);

[PATCH 4.19 09/41] nilfs2: fix buffer corruption due to concurrent device reads

[Greg Kroah-Hartman]

From: Ryusuke Konishi <konishi.ryusuke@gmail.com>

commit 679bd7ebdd315bf457a4740b306ae99f1d0a403d upstream.

As a result of analysis of a syzbot report, it turned out that in three
cases where nilfs2 allocates block device buffers directly via sb_getblk,
concurrent reads to the device can corrupt the allocated buffers.

Nilfs2 uses sb_getblk for segment summary blocks, that make up a log
header, and the super root block, that is the trailer, and when moving and
writing the second super block after fs resize.

In any of these, since the uptodate flag is not set when storing metadata
to be written in the allocated buffers, the stored metadata will be
overwritten if a device read of the same block occurs concurrently before
the write.  This causes metadata corruption and misbehavior in the log
write itself, causing warnings in nilfs_btree_assign() as reported.

Fix these issues by setting an uptodate flag on the buffer head on the
first or before modifying each buffer obtained with sb_getblk, and
clearing the flag on failure.

When setting the uptodate flag, the lock_buffer/unlock_buffer pair is used
to perform necessary exclusive control, and the buffer is filled to ensure
that uninitialized bytes are not mixed into the data read from others.  As
for buffers for segment summary blocks, they are filled incrementally, so
if the uptodate flag was unset on their allocation, set the flag and zero
fill the buffer once at that point.

Also, regarding the superblock move routine, the starting point of the
memset call to zerofill the block is incorrectly specified, which can
cause a buffer overflow on file systems with block sizes greater than
4KiB.  In addition, if the superblock is moved within a large block, it is
necessary to assume the possibility that the data in the superblock will
be destroyed by zero-filling before copying.  So fix these potential
issues as well.

Link: https://lkml.kernel.org/r/20230609035732.20426-1-konishi.ryusuke@gmail.com
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Reported-by: syzbot+31837fe952932efc8fb9@syzkaller.appspotmail.com
Closes: https://lkml.kernel.org/r/00000000000030000a05e981f475@google.com
Tested-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/nilfs2/segbuf.c  |    6 ++++++
 fs/nilfs2/segment.c |    7 +++++++
 fs/nilfs2/super.c   |   23 ++++++++++++++++++++++-
 3 files changed, 35 insertions(+), 1 deletion(-)

--- a/fs/nilfs2/segbuf.c
+++ b/fs/nilfs2/segbuf.c
@@ -101,6 +101,12 @@ int nilfs_segbuf_extend_segsum(struct ni
 	if (unlikely(!bh))
 		return -ENOMEM;
 
+	lock_buffer(bh);
+	if (!buffer_uptodate(bh)) {
+		memset(bh->b_data, 0, bh->b_size);
+		set_buffer_uptodate(bh);
+	}
+	unlock_buffer(bh);
 	nilfs_segbuf_add_segsum_buffer(segbuf, bh);
 	return 0;
 }
--- a/fs/nilfs2/segment.c
+++ b/fs/nilfs2/segment.c
@@ -984,10 +984,13 @@ static void nilfs_segctor_fill_in_super_
 	unsigned int isz, srsz;
 
 	bh_sr = NILFS_LAST_SEGBUF(&sci->sc_segbufs)->sb_super_root;
+
+	lock_buffer(bh_sr);
 	raw_sr = (struct nilfs_super_root *)bh_sr->b_data;
 	isz = nilfs->ns_inode_size;
 	srsz = NILFS_SR_BYTES(isz);
 
+	raw_sr->sr_sum = 0;  /* Ensure initialization within this update */
 	raw_sr->sr_bytes = cpu_to_le16(srsz);
 	raw_sr->sr_nongc_ctime
 		= cpu_to_le64(nilfs_doing_gc() ?
@@ -1001,6 +1004,8 @@ static void nilfs_segctor_fill_in_super_
 	nilfs_write_inode_common(nilfs->ns_sufile, (void *)raw_sr +
 				 NILFS_SR_SUFILE_OFFSET(isz), 1);
 	memset((void *)raw_sr + srsz, 0, nilfs->ns_blocksize - srsz);
+	set_buffer_uptodate(bh_sr);
+	unlock_buffer(bh_sr);
 }
 
 static void nilfs_redirty_inodes(struct list_head *head)
@@ -1778,6 +1783,7 @@ static void nilfs_abort_logs(struct list
 	list_for_each_entry(segbuf, logs, sb_list) {
 		list_for_each_entry(bh, &segbuf->sb_segsum_buffers,
 				    b_assoc_buffers) {
+			clear_buffer_uptodate(bh);
 			if (bh->b_page != bd_page) {
 				if (bd_page)
 					end_page_writeback(bd_page);
@@ -1789,6 +1795,7 @@ static void nilfs_abort_logs(struct list
 				    b_assoc_buffers) {
 			clear_buffer_async_write(bh);
 			if (bh == segbuf->sb_super_root) {
+				clear_buffer_uptodate(bh);
 				if (bh->b_page != bd_page) {
 					end_page_writeback(bd_page);
 					bd_page = bh->b_page;
--- a/fs/nilfs2/super.c
+++ b/fs/nilfs2/super.c
@@ -374,10 +374,31 @@ static int nilfs_move_2nd_super(struct s
 		goto out;
 	}
 	nsbp = (void *)nsbh->b_data + offset;
-	memset(nsbp, 0, nilfs->ns_blocksize);
 
+	lock_buffer(nsbh);
 	if (sb2i >= 0) {
+		/*
+		 * The position of the second superblock only changes by 4KiB,
+		 * which is larger than the maximum superblock data size
+		 * (= 1KiB), so there is no need to use memmove() to allow
+		 * overlap between source and destination.
+		 */
 		memcpy(nsbp, nilfs->ns_sbp[sb2i], nilfs->ns_sbsize);
+
+		/*
+		 * Zero fill after copy to avoid overwriting in case of move
+		 * within the same block.
+		 */
+		memset(nsbh->b_data, 0, offset);
+		memset((void *)nsbp + nilfs->ns_sbsize, 0,
+		       nsbh->b_size - offset - nilfs->ns_sbsize);
+	} else {
+		memset(nsbh->b_data, 0, nsbh->b_size);
+	}
+	set_buffer_uptodate(nsbh);
+	unlock_buffer(nsbh);
+
+	if (sb2i >= 0) {
 		brelse(nilfs->ns_sbh[sb2i]);
 		nilfs->ns_sbh[sb2i] = nsbh;
 		nilfs->ns_sbp[sb2i] = nsbp;

[PATCH 4.19 10/41] Drivers: hv: vmbus: Fix vmbus_wait_for_unload() to scan present CPUs

[Greg Kroah-Hartman]

From: Michael Kelley <mikelley@microsoft.com>

commit 320805ab61e5f1e2a5729ae266e16bec2904050c upstream.

vmbus_wait_for_unload() may be called in the panic path after other
CPUs are stopped. vmbus_wait_for_unload() currently loops through
online CPUs looking for the UNLOAD response message. But the values of
CONFIG_KEXEC_CORE and crash_kexec_post_notifiers affect the path used
to stop the other CPUs, and in one of the paths the stopped CPUs
are removed from cpu_online_mask. This removal happens in both
x86/x64 and arm64 architectures. In such a case, vmbus_wait_for_unload()
only checks the panic'ing CPU, and misses the UNLOAD response message
except when the panic'ing CPU is CPU 0. vmbus_wait_for_unload()
eventually times out, but only after waiting 100 seconds.

Fix this by looping through *present* CPUs in vmbus_wait_for_unload().
The cpu_present_mask is not modified by stopping the other CPUs in the
panic path, nor should it be.

Also, in a CoCo VM the synic_message_page is not allocated in
hv_synic_alloc(), but is set and cleared in hv_synic_enable_regs()
and hv_synic_disable_regs() such that it is set only when the CPU is
online.  If not all present CPUs are online when vmbus_wait_for_unload()
is called, the synic_message_page might be NULL. Add a check for this.

Fixes: cd95aad55793 ("Drivers: hv: vmbus: handle various crash scenarios")
Cc: stable@vger.kernel.org
Reported-by: John Starks <jostarks@microsoft.com>
Signed-off-by: Michael Kelley <mikelley@microsoft.com>
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Link: https://lore.kernel.org/r/1684422832-38476-1-git-send-email-mikelley@microsoft.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/hv/channel_mgmt.c |   18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

--- a/drivers/hv/channel_mgmt.c
+++ b/drivers/hv/channel_mgmt.c
@@ -813,11 +813,22 @@ static void vmbus_wait_for_unload(void)
 		if (completion_done(&vmbus_connection.unload_event))
 			goto completed;
 
-		for_each_online_cpu(cpu) {
+		for_each_present_cpu(cpu) {
 			struct hv_per_cpu_context *hv_cpu
 				= per_cpu_ptr(hv_context.cpu_context, cpu);
 
+			/*
+			 * In a CoCo VM the synic_message_page is not allocated
+			 * in hv_synic_alloc(). Instead it is set/cleared in
+			 * hv_synic_enable_regs() and hv_synic_disable_regs()
+			 * such that it is set only when the CPU is online. If
+			 * not all present CPUs are online, the message page
+			 * might be NULL, so skip such CPUs.
+			 */
 			page_addr = hv_cpu->synic_message_page;
+			if (!page_addr)
+				continue;
+
 			msg = (struct hv_message *)page_addr
 				+ VMBUS_MESSAGE_SINT;
 
@@ -851,11 +862,14 @@ completed:
 	 * maybe-pending messages on all CPUs to be able to receive new
 	 * messages after we reconnect.
 	 */
-	for_each_online_cpu(cpu) {
+	for_each_present_cpu(cpu) {
 		struct hv_per_cpu_context *hv_cpu
 			= per_cpu_ptr(hv_context.cpu_context, cpu);
 
 		page_addr = hv_cpu->synic_message_page;
+		if (!page_addr)
+			continue;
+
 		msg = (struct hv_message *)page_addr + VMBUS_MESSAGE_SINT;
 		msg->header.message_type = HVMSG_NONE;
 	}

[PATCH 4.19 11/41] PCI: hv: Fix a race condition bug in hv_pci_query_relations()

[Greg Kroah-Hartman]

From: Dexuan Cui <decui@microsoft.com>

commit 440b5e3663271b0ffbd4908115044a6a51fb938b upstream.

Since day 1 of the driver, there has been a race between
hv_pci_query_relations() and survey_child_resources(): during fast
device hotplug, hv_pci_query_relations() may error out due to
device-remove and the stack variable 'comp' is no longer valid;
however, pci_devices_present_work() -> survey_child_resources() ->
complete() may be running on another CPU and accessing the no-longer-valid
'comp'. Fix the race by flushing the workqueue before we exit from
hv_pci_query_relations().

Fixes: 4daace0d8ce8 ("PCI: hv: Add paravirtual PCI front-end for Microsoft Hyper-V VMs")
Signed-off-by: Dexuan Cui <decui@microsoft.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Acked-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20230615044451.5580-2-decui@microsoft.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/pci/controller/pci-hyperv.c |   18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

--- a/drivers/pci/controller/pci-hyperv.c
+++ b/drivers/pci/controller/pci-hyperv.c
@@ -2445,6 +2445,24 @@ static int hv_pci_query_relations(struct
 	if (!ret)
 		ret = wait_for_response(hdev, &comp);
 
+	/*
+	 * In the case of fast device addition/removal, it's possible that
+	 * vmbus_sendpacket() or wait_for_response() returns -ENODEV but we
+	 * already got a PCI_BUS_RELATIONS* message from the host and the
+	 * channel callback already scheduled a work to hbus->wq, which can be
+	 * running pci_devices_present_work() -> survey_child_resources() ->
+	 * complete(&hbus->survey_event), even after hv_pci_query_relations()
+	 * exits and the stack variable 'comp' is no longer valid; as a result,
+	 * a hang or a page fault may happen when the complete() calls
+	 * raw_spin_lock_irqsave(). Flush hbus->wq before we exit from
+	 * hv_pci_query_relations() to avoid the issues. Note: if 'ret' is
+	 * -ENODEV, there can't be any more work item scheduled to hbus->wq
+	 * after the flush_workqueue(): see vmbus_onoffer_rescind() ->
+	 * vmbus_reset_channel_cb(), vmbus_rescind_cleanup() ->
+	 * channel->rescind = true.
+	 */
+	flush_workqueue(hbus->wq);
+
 	return ret;
 }
 

[PATCH 4.19 12/41] cgroup: Do not corrupt task iteration when rebinding subsystem

[Greg Kroah-Hartman]

From: Xiu Jianfeng <xiujianfeng@huawei.com>

commit 6f363f5aa845561f7ea496d8b1175e3204470486 upstream.

We found a refcount UAF bug as follows:

refcount_t: addition on 0; use-after-free.
WARNING: CPU: 1 PID: 342 at lib/refcount.c:25 refcount_warn_saturate+0xa0/0x148
Workqueue: events cpuset_hotplug_workfn
Call trace:
 refcount_warn_saturate+0xa0/0x148
 __refcount_add.constprop.0+0x5c/0x80
 css_task_iter_advance_css_set+0xd8/0x210
 css_task_iter_advance+0xa8/0x120
 css_task_iter_next+0x94/0x158
 update_tasks_root_domain+0x58/0x98
 rebuild_root_domains+0xa0/0x1b0
 rebuild_sched_domains_locked+0x144/0x188
 cpuset_hotplug_workfn+0x138/0x5a0
 process_one_work+0x1e8/0x448
 worker_thread+0x228/0x3e0
 kthread+0xe0/0xf0
 ret_from_fork+0x10/0x20

then a kernel panic will be triggered as below:

Unable to handle kernel paging request at virtual address 00000000c0000010
Call trace:
 cgroup_apply_control_disable+0xa4/0x16c
 rebind_subsystems+0x224/0x590
 cgroup_destroy_root+0x64/0x2e0
 css_free_rwork_fn+0x198/0x2a0
 process_one_work+0x1d4/0x4bc
 worker_thread+0x158/0x410
 kthread+0x108/0x13c
 ret_from_fork+0x10/0x18

The race that cause this bug can be shown as below:

(hotplug cpu)                | (umount cpuset)
mutex_lock(&cpuset_mutex)    | mutex_lock(&cgroup_mutex)
cpuset_hotplug_workfn        |
 rebuild_root_domains        |  rebind_subsystems
  update_tasks_root_domain   |   spin_lock_irq(&css_set_lock)
   css_task_iter_start       |    list_move_tail(&cset->e_cset_node[ss->id]
   while(css_task_iter_next) |                  &dcgrp->e_csets[ss->id]);
   css_task_iter_end         |   spin_unlock_irq(&css_set_lock)
mutex_unlock(&cpuset_mutex)  | mutex_unlock(&cgroup_mutex)

Inside css_task_iter_start/next/end, css_set_lock is hold and then
released, so when iterating task(left side), the css_set may be moved to
another list(right side), then it->cset_head points to the old list head
and it->cset_pos->next points to the head node of new list, which can't
be used as struct css_set.

To fix this issue, switch from all css_sets to only scgrp's css_sets to
patch in-flight iterators to preserve correct iteration, and then
update it->cset_head as well.

Reported-by: Gaosheng Cui <cuigaosheng1@huawei.com>
Link: https://www.spinics.net/lists/cgroups/msg37935.html
Suggested-by: Michal Koutný <mkoutny@suse.com>
Link: https://lore.kernel.org/all/20230526114139.70274-1-xiujianfeng@huaweicloud.com/
Signed-off-by: Xiu Jianfeng <xiujianfeng@huawei.com>
Fixes: 2d8f243a5e6e ("cgroup: implement cgroup->e_csets[]")
Cc: stable@vger.kernel.org # v3.16+
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 kernel/cgroup/cgroup.c |   20 +++++++++++++++++---
 1 file changed, 17 insertions(+), 3 deletions(-)

--- a/kernel/cgroup/cgroup.c
+++ b/kernel/cgroup/cgroup.c
@@ -1652,7 +1652,7 @@ int rebind_subsystems(struct cgroup_root
 {
 	struct cgroup *dcgrp = &dst_root->cgrp;
 	struct cgroup_subsys *ss;
-	int ssid, i, ret;
+	int ssid, ret;
 	u16 dfl_disable_ss_mask = 0;
 
 	lockdep_assert_held(&cgroup_mutex);
@@ -1696,7 +1696,8 @@ int rebind_subsystems(struct cgroup_root
 		struct cgroup_root *src_root = ss->root;
 		struct cgroup *scgrp = &src_root->cgrp;
 		struct cgroup_subsys_state *css = cgroup_css(scgrp, ss);
-		struct css_set *cset;
+		struct css_set *cset, *cset_pos;
+		struct css_task_iter *it;
 
 		WARN_ON(!css || cgroup_css(dcgrp, ss));
 
@@ -1714,9 +1715,22 @@ int rebind_subsystems(struct cgroup_root
 		css->cgroup = dcgrp;
 
 		spin_lock_irq(&css_set_lock);
-		hash_for_each(css_set_table, i, cset, hlist)
+		WARN_ON(!list_empty(&dcgrp->e_csets[ss->id]));
+		list_for_each_entry_safe(cset, cset_pos, &scgrp->e_csets[ss->id],
+					 e_cset_node[ss->id]) {
 			list_move_tail(&cset->e_cset_node[ss->id],
 				       &dcgrp->e_csets[ss->id]);
+			/*
+			 * all css_sets of scgrp together in same order to dcgrp,
+			 * patch in-flight iterators to preserve correct iteration.
+			 * since the iterator is always advanced right away and
+			 * finished when it->cset_pos meets it->cset_head, so only
+			 * update it->cset_head is enough here.
+			 */
+			list_for_each_entry(it, &cset->task_iters, iters_node)
+				if (it->cset_head == &scgrp->e_csets[ss->id])
+					it->cset_head = &dcgrp->e_csets[ss->id];
+		}
 		spin_unlock_irq(&css_set_lock);
 
 		/* default hierarchy doesn't enable controllers by default */

[PATCH 4.19 13/41] nilfs2: prevent general protection fault in nilfs_clear_dirty_page()

[Greg Kroah-Hartman]

From: Ryusuke Konishi <konishi.ryusuke@gmail.com>

commit 782e53d0c14420858dbf0f8f797973c150d3b6d7 upstream.

In a syzbot stress test that deliberately causes file system errors on
nilfs2 with a corrupted disk image, it has been reported that
nilfs_clear_dirty_page() called from nilfs_clear_dirty_pages() can cause a
general protection fault.

In nilfs_clear_dirty_pages(), when looking up dirty pages from the page
cache and calling nilfs_clear_dirty_page() for each dirty page/folio
retrieved, the back reference from the argument page to "mapping" may have
been changed to NULL (and possibly others).  It is necessary to check this
after locking the page/folio.

So, fix this issue by not calling nilfs_clear_dirty_page() on a page/folio
after locking it in nilfs_clear_dirty_pages() if the back reference
"mapping" from the page/folio is different from the "mapping" that held
the page/folio just before.

Link: https://lkml.kernel.org/r/20230612021456.3682-1-konishi.ryusuke@gmail.com
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Reported-by: syzbot+53369d11851d8f26735c@syzkaller.appspotmail.com
Closes: https://lkml.kernel.org/r/000000000000da4f6b05eb9bf593@google.com
Tested-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/nilfs2/page.c |   10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

--- a/fs/nilfs2/page.c
+++ b/fs/nilfs2/page.c
@@ -372,7 +372,15 @@ void nilfs_clear_dirty_pages(struct addr
 			struct page *page = pvec.pages[i];
 
 			lock_page(page);
-			nilfs_clear_dirty_page(page, silent);
+
+			/*
+			 * This page may have been removed from the address
+			 * space by truncation or invalidation when the lock
+			 * was acquired.  Skip processing in that case.
+			 */
+			if (likely(page->mapping == mapping))
+				nilfs_clear_dirty_page(page, silent);
+
 			unlock_page(page);
 		}
 		pagevec_release(&pvec);

[PATCH 4.19 14/41] rcu: Upgrade rcu_swap_protected() to rcu_replace_pointer()

[Greg Kroah-Hartman]

From: Paul E. McKenney <paulmck@kernel.org>

[ Upstream commit a63fc6b75cca984c71f095282e0227a390ba88f3 ]

Although the rcu_swap_protected() macro follows the example of
swap(), the interactions with RCU make its update of its argument
somewhat counter-intuitive.  This commit therefore introduces
an rcu_replace_pointer() that returns the old value of the RCU
pointer instead of doing the argument update.  Once all the uses of
rcu_swap_protected() are updated to instead use rcu_replace_pointer(),
rcu_swap_protected() will be removed.

Link: https://lore.kernel.org/lkml/CAHk-=wiAsJLw1egFEE=Z7-GGtM6wcvtyytXZA1+BHqta4gg6Hw@mail.gmail.com/
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
[ paulmck: From rcu_replace() to rcu_replace_pointer() per Ingo Molnar. ]
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Cc: Bart Van Assche <bart.vanassche@wdc.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Hannes Reinecke <hare@suse.de>
Cc: Johannes Thumshirn <jthumshirn@suse.de>
Cc: Shane M Seymour <shane.seymour@hpe.com>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Stable-dep-of: a61675294735 ("ieee802154: hwsim: Fix possible memory leaks")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 include/linux/rcupdate.h | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h
index 68cbe111420bc..cf139d6e5c1d3 100644
--- a/include/linux/rcupdate.h
+++ b/include/linux/rcupdate.h
@@ -410,6 +410,24 @@ static inline void rcu_preempt_sleep_check(void) { }
 	_r_a_p__v;							      \
 })
 
+/**
+ * rcu_replace_pointer() - replace an RCU pointer, returning its old value
+ * @rcu_ptr: RCU pointer, whose old value is returned
+ * @ptr: regular pointer
+ * @c: the lockdep conditions under which the dereference will take place
+ *
+ * Perform a replacement, where @rcu_ptr is an RCU-annotated
+ * pointer and @c is the lockdep argument that is passed to the
+ * rcu_dereference_protected() call used to read that pointer.  The old
+ * value of @rcu_ptr is returned, and @rcu_ptr is set to @ptr.
+ */
+#define rcu_replace_pointer(rcu_ptr, ptr, c)				\
+({									\
+	typeof(ptr) __tmp = rcu_dereference_protected((rcu_ptr), (c));	\
+	rcu_assign_pointer((rcu_ptr), (ptr));				\
+	__tmp;								\
+})
+
 /**
  * rcu_swap_protected() - swap an RCU and a regular pointer
  * @rcu_ptr: RCU pointer
-- 
2.39.2

[PATCH 4.19 15/41] ieee802154: hwsim: Fix possible memory leaks

[Greg Kroah-Hartman]

From: Chen Aotian <chenaotian2@163.com>

[ Upstream commit a61675294735570daca3779bd1dbb3715f7232bd ]

After replacing e->info, it is necessary to free the old einfo.

Fixes: f25da51fdc38 ("ieee802154: hwsim: add replacement for fakelb")
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Alexander Aring <aahringo@redhat.com>
Signed-off-by: Chen Aotian <chenaotian2@163.com>
Link: https://lore.kernel.org/r/20230409022048.61223-1-chenaotian2@163.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ieee802154/mac802154_hwsim.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ieee802154/mac802154_hwsim.c b/drivers/net/ieee802154/mac802154_hwsim.c
index d07e5571e07ae..1ac600d186886 100644
--- a/drivers/net/ieee802154/mac802154_hwsim.c
+++ b/drivers/net/ieee802154/mac802154_hwsim.c
@@ -540,7 +540,7 @@ static int hwsim_del_edge_nl(struct sk_buff *msg, struct genl_info *info)
 static int hwsim_set_edge_lqi(struct sk_buff *msg, struct genl_info *info)
 {
 	struct nlattr *edge_attrs[MAC802154_HWSIM_EDGE_ATTR_MAX + 1];
-	struct hwsim_edge_info *einfo;
+	struct hwsim_edge_info *einfo, *einfo_old;
 	struct hwsim_phy *phy_v0;
 	struct hwsim_edge *e;
 	u32 v0, v1;
@@ -580,8 +580,10 @@ static int hwsim_set_edge_lqi(struct sk_buff *msg, struct genl_info *info)
 	list_for_each_entry_rcu(e, &phy_v0->edges, list) {
 		if (e->endpoint->idx == v1) {
 			einfo->lqi = lqi;
-			rcu_assign_pointer(e->info, einfo);
+			einfo_old = rcu_replace_pointer(e->info, einfo,
+							lockdep_is_held(&hwsim_phys_lock));
 			rcu_read_unlock();
+			kfree_rcu(einfo_old, rcu);
 			mutex_unlock(&hwsim_phys_lock);
 			return 0;
 		}
-- 
2.39.2

[PATCH 4.19 16/41] xfrm: Linearize the skb after offloading if needed.

[Greg Kroah-Hartman]

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

[ Upstream commit f015b900bc3285322029b4a7d132d6aeb0e51857 ]

With offloading enabled, esp_xmit() gets invoked very late, from within
validate_xmit_xfrm() which is after validate_xmit_skb() validates and
linearizes the skb if the underlying device does not support fragments.

esp_output_tail() may add a fragment to the skb while adding the auth
tag/ IV. Devices without the proper support will then send skb->data
points to with the correct length so the packet will have garbage at the
end. A pcap sniffer will claim that the proper data has been sent since
it parses the skb properly.

It is not affected with INET_ESP_OFFLOAD disabled.

Linearize the skb after offloading if the sending hardware requires it.
It was tested on v4, v6 has been adopted.

Fixes: 7785bba299a8d ("esp: Add a software GRO codepath")
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/ipv4/esp4_offload.c | 3 +++
 net/ipv6/esp6_offload.c | 3 +++
 2 files changed, 6 insertions(+)

diff --git a/net/ipv4/esp4_offload.c b/net/ipv4/esp4_offload.c
index 58834a10c0be7..93045373e44bd 100644
--- a/net/ipv4/esp4_offload.c
+++ b/net/ipv4/esp4_offload.c
@@ -237,6 +237,9 @@ static int esp_xmit(struct xfrm_state *x, struct sk_buff *skb,  netdev_features_
 
 	secpath_reset(skb);
 
+	if (skb_needs_linearize(skb, skb->dev->features) &&
+	    __skb_linearize(skb))
+		return -ENOMEM;
 	return 0;
 }
 
diff --git a/net/ipv6/esp6_offload.c b/net/ipv6/esp6_offload.c
index eeee64a8a72c2..69313ec24264e 100644
--- a/net/ipv6/esp6_offload.c
+++ b/net/ipv6/esp6_offload.c
@@ -272,6 +272,9 @@ static int esp6_xmit(struct xfrm_state *x, struct sk_buff *skb,  netdev_features
 
 	secpath_reset(skb);
 
+	if (skb_needs_linearize(skb, skb->dev->features) &&
+	    __skb_linearize(skb))
+		return -ENOMEM;
 	return 0;
 }
 
-- 
2.39.2

[PATCH 4.19 17/41] net: qca_spi: Avoid high load if QCA7000 is not available

[Greg Kroah-Hartman]

From: Stefan Wahren <stefan.wahren@i2se.com>

[ Upstream commit 92717c2356cb62c89e8a3dc37cbbab2502562524 ]

In case the QCA7000 is not available via SPI (e.g. in reset),
the driver will cause a high load. The reason for this is
that the synchronization is never finished and schedule()
is never called. Since the synchronization is not timing
critical, it's safe to drop this from the scheduling condition.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Fixes: 291ab06ecf67 ("net: qualcomm: new Ethernet over SPI driver for QCA7000")
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/qualcomm/qca_spi.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/qualcomm/qca_spi.c b/drivers/net/ethernet/qualcomm/qca_spi.c
index afd49c7fd87fe..3e6095f0cb5f5 100644
--- a/drivers/net/ethernet/qualcomm/qca_spi.c
+++ b/drivers/net/ethernet/qualcomm/qca_spi.c
@@ -553,8 +553,7 @@ qcaspi_spi_thread(void *data)
 	while (!kthread_should_stop()) {
 		set_current_state(TASK_INTERRUPTIBLE);
 		if ((qca->intr_req == qca->intr_svc) &&
-		    (qca->txr.skb[qca->txr.head] == NULL) &&
-		    (qca->sync == QCASPI_SYNC_READY))
+		    !qca->txr.skb[qca->txr.head])
 			schedule();
 
 		set_current_state(TASK_RUNNING);
-- 
2.39.2

[PATCH 4.19 18/41] mmc: mtk-sd: fix deferred probing

[Greg Kroah-Hartman]

From: Sergey Shtylyov <s.shtylyov@omp.ru>

[ Upstream commit 0c4dc0f054891a2cbde0426b0c0fdf232d89f47f ]

The driver overrides the error codes returned by platform_get_irq() to
-EINVAL, so if it returns -EPROBE_DEFER, the driver will fail the probe
permanently instead of the deferred probing. Switch to propagating the
error codes upstream.

Fixes: 208489032bdd ("mmc: mediatek: Add Mediatek MMC driver")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Link: https://lore.kernel.org/r/20230617203622.6812-4-s.shtylyov@omp.ru
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/mmc/host/mtk-sd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c
index 967e47770af67..d42c5da1a2260 100644
--- a/drivers/mmc/host/mtk-sd.c
+++ b/drivers/mmc/host/mtk-sd.c
@@ -1912,7 +1912,7 @@ static int msdc_drv_probe(struct platform_device *pdev)
 
 	host->irq = platform_get_irq(pdev, 0);
 	if (host->irq < 0) {
-		ret = -EINVAL;
+		ret = host->irq;
 		goto host_free;
 	}
 
-- 
2.39.2

[PATCH 4.19 19/41] mmc: mvsdio: convert to devm_platform_ioremap_resource

[Greg Kroah-Hartman]

From: Yangtao Li <tiny.windzz@gmail.com>

[ Upstream commit 0a337eb168d6cbb85f6b4eb56d1be55e24c80452 ]

Use devm_platform_ioremap_resource() to simplify code.

Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Link: https://lore.kernel.org/r/20191215175120.3290-11-tiny.windzz@gmail.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Stable-dep-of: 8d84064da0d4 ("mmc: mvsdio: fix deferred probing")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/mmc/host/mvsdio.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/mmc/host/mvsdio.c b/drivers/mmc/host/mvsdio.c
index e22bbff89c8d2..3ad8d1108fd08 100644
--- a/drivers/mmc/host/mvsdio.c
+++ b/drivers/mmc/host/mvsdio.c
@@ -699,16 +699,14 @@ static int mvsd_probe(struct platform_device *pdev)
 	struct mmc_host *mmc = NULL;
 	struct mvsd_host *host = NULL;
 	const struct mbus_dram_target_info *dram;
-	struct resource *r;
 	int ret, irq;
 
 	if (!np) {
 		dev_err(&pdev->dev, "no DT node\n");
 		return -ENODEV;
 	}
-	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	irq = platform_get_irq(pdev, 0);
-	if (!r || irq < 0)
+	if (irq < 0)
 		return -ENXIO;
 
 	mmc = mmc_alloc_host(sizeof(struct mvsd_host), &pdev->dev);
@@ -761,7 +759,7 @@ static int mvsd_probe(struct platform_device *pdev)
 
 	spin_lock_init(&host->lock);
 
-	host->base = devm_ioremap_resource(&pdev->dev, r);
+	host->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(host->base)) {
 		ret = PTR_ERR(host->base);
 		goto out;
-- 
2.39.2

[PATCH 4.19 20/41] mmc: mvsdio: fix deferred probing

[Greg Kroah-Hartman]

From: Sergey Shtylyov <s.shtylyov@omp.ru>

[ Upstream commit 8d84064da0d4672e74f984e8710f27881137472c ]

The driver overrides the error codes returned by platform_get_irq() to
-ENXIO, so if it returns -EPROBE_DEFER, the driver will fail the probe
permanently instead of the deferred probing. Switch to propagating the
error codes upstream.

Fixes: 9ec36cafe43b ("of/irq: do irq resolution in platform_get_irq")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Link: https://lore.kernel.org/r/20230617203622.6812-5-s.shtylyov@omp.ru
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/mmc/host/mvsdio.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mmc/host/mvsdio.c b/drivers/mmc/host/mvsdio.c
index 3ad8d1108fd08..fff9980a3ef28 100644
--- a/drivers/mmc/host/mvsdio.c
+++ b/drivers/mmc/host/mvsdio.c
@@ -707,7 +707,7 @@ static int mvsd_probe(struct platform_device *pdev)
 	}
 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0)
-		return -ENXIO;
+		return irq;
 
 	mmc = mmc_alloc_host(sizeof(struct mvsd_host), &pdev->dev);
 	if (!mmc) {
-- 
2.39.2

[PATCH 4.19 21/41] mmc: omap: fix deferred probing

[Greg Kroah-Hartman]

From: Sergey Shtylyov <s.shtylyov@omp.ru>

[ Upstream commit aedf4ba1ad00aaa94c1b66c73ecaae95e2564b95 ]

The driver overrides the error codes returned by platform_get_irq() to
-ENXIO, so if it returns -EPROBE_DEFER, the driver will fail the probe
permanently instead of the deferred probing. Switch to propagating the
error codes upstream.

Fixes: 9ec36cafe43b ("of/irq: do irq resolution in platform_get_irq")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Link: https://lore.kernel.org/r/20230617203622.6812-6-s.shtylyov@omp.ru
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/mmc/host/omap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mmc/host/omap.c b/drivers/mmc/host/omap.c
index b2873a2432b69..345b35483cee7 100644
--- a/drivers/mmc/host/omap.c
+++ b/drivers/mmc/host/omap.c
@@ -1347,7 +1347,7 @@ static int mmc_omap_probe(struct platform_device *pdev)
 
 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0)
-		return -ENXIO;
+		return irq;
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	host->virt_base = devm_ioremap_resource(&pdev->dev, res);
-- 
2.39.2

[PATCH 4.19 22/41] mmc: omap_hsmmc: fix deferred probing

[Greg Kroah-Hartman]

From: Sergey Shtylyov <s.shtylyov@omp.ru>

[ Upstream commit fb51b74a57859b707c3e8055ed0c25a7ca4f6a29 ]

The driver overrides the error codes returned by platform_get_irq() to
-ENXIO, so if it returns -EPROBE_DEFER, the driver will fail the probe
permanently instead of the deferred probing. Switch to propagating the
error codes upstream.

Fixes: 9ec36cafe43b ("of/irq: do irq resolution in platform_get_irq")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Link: https://lore.kernel.org/r/20230617203622.6812-7-s.shtylyov@omp.ru
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/mmc/host/omap_hsmmc.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 0135693afa158..881d1de4a5635 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -2006,9 +2006,11 @@ static int omap_hsmmc_probe(struct platform_device *pdev)
 	}
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	irq = platform_get_irq(pdev, 0);
-	if (res == NULL || irq < 0)
+	if (!res)
 		return -ENXIO;
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0)
+		return irq;
 
 	base = devm_ioremap_resource(&pdev->dev, res);
 	if (IS_ERR(base))
-- 
2.39.2

[PATCH 4.19 23/41] mmc: sdhci-acpi: fix deferred probing

[Greg Kroah-Hartman]

From: Sergey Shtylyov <s.shtylyov@omp.ru>

[ Upstream commit b465dea5e1540c7d7b5211adaf94926980d3014b ]

The driver overrides the error codes returned by platform_get_irq() to
-EINVAL, so if it returns -EPROBE_DEFER, the driver will fail the probe
permanently instead of the deferred probing. Switch to propagating the
error codes upstream.

Fixes: 1b7ba57ecc86 ("mmc: sdhci-acpi: Handle return value of platform_get_irq")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20230617203622.6812-9-s.shtylyov@omp.ru
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/mmc/host/sdhci-acpi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mmc/host/sdhci-acpi.c b/drivers/mmc/host/sdhci-acpi.c
index 6cc187ce3a329..069b9a07aca5d 100644
--- a/drivers/mmc/host/sdhci-acpi.c
+++ b/drivers/mmc/host/sdhci-acpi.c
@@ -721,7 +721,7 @@ static int sdhci_acpi_probe(struct platform_device *pdev)
 	host->ops	= &sdhci_acpi_ops_dflt;
 	host->irq	= platform_get_irq(pdev, 0);
 	if (host->irq < 0) {
-		err = -EINVAL;
+		err = host->irq;
 		goto err_free;
 	}
 
-- 
2.39.2

[PATCH 4.19 24/41] mmc: usdhi60rol0: fix deferred probing

[Greg Kroah-Hartman]

From: Sergey Shtylyov <s.shtylyov@omp.ru>

[ Upstream commit 413db499730248431c1005b392e8ed82c4fa19bf ]

The driver overrides the error codes returned by platform_get_irq_byname()
to -ENODEV, so if it returns -EPROBE_DEFER, the driver will fail the probe
permanently instead of the deferred probing.  Switch to propagating error
codes upstream.

Fixes: 9ec36cafe43b ("of/irq: do irq resolution in platform_get_irq")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Link: https://lore.kernel.org/r/20230617203622.6812-13-s.shtylyov@omp.ru
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/mmc/host/usdhi6rol0.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/mmc/host/usdhi6rol0.c b/drivers/mmc/host/usdhi6rol0.c
index b88728b686e8a..e436f7e7a3ee0 100644
--- a/drivers/mmc/host/usdhi6rol0.c
+++ b/drivers/mmc/host/usdhi6rol0.c
@@ -1749,8 +1749,10 @@ static int usdhi6_probe(struct platform_device *pdev)
 	irq_cd = platform_get_irq_byname(pdev, "card detect");
 	irq_sd = platform_get_irq_byname(pdev, "data");
 	irq_sdio = platform_get_irq_byname(pdev, "SDIO");
-	if (irq_sd < 0 || irq_sdio < 0)
-		return -ENODEV;
+	if (irq_sd < 0)
+		return irq_sd;
+	if (irq_sdio < 0)
+		return irq_sdio;
 
 	mmc = mmc_alloc_host(sizeof(struct usdhi6_host), dev);
 	if (!mmc)
-- 
2.39.2

[PATCH 4.19 25/41] be2net: Extend xmit workaround to BE3 chip

[Greg Kroah-Hartman]

From: Ross Lagerwall <ross.lagerwall@citrix.com>

[ Upstream commit 7580e0a78eb29e7bb1a772eba4088250bbb70d41 ]

We have seen a bug where the NIC incorrectly changes the length in the
IP header of a padded packet to include the padding bytes. The driver
already has a workaround for this so do the workaround for this NIC too.
This resolves the issue.

The NIC in question identifies itself as follows:

[    8.828494] be2net 0000:02:00.0: FW version is 10.7.110.31
[    8.834759] be2net 0000:02:00.0: Emulex OneConnect(be3): PF FLEX10 port 1

02:00.0 Ethernet controller: Emulex Corporation OneConnect 10Gb NIC (be3) (rev 01)

Fixes: ca34fe38f06d ("be2net: fix wrong usage of adapter->generation")
Signed-off-by: Ross Lagerwall <ross.lagerwall@citrix.com>
Link: https://lore.kernel.org/r/20230616164549.2863037-1-ross.lagerwall@citrix.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/emulex/benet/be_main.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c
index 05cb2f7cc35c3..8603df2ae1736 100644
--- a/drivers/net/ethernet/emulex/benet/be_main.c
+++ b/drivers/net/ethernet/emulex/benet/be_main.c
@@ -1136,8 +1136,8 @@ static struct sk_buff *be_lancer_xmit_workarounds(struct be_adapter *adapter,
 	eth_hdr_len = ntohs(skb->protocol) == ETH_P_8021Q ?
 						VLAN_ETH_HLEN : ETH_HLEN;
 	if (skb->len <= 60 &&
-	    (lancer_chip(adapter) || skb_vlan_tag_present(skb)) &&
-	    is_ipv4_pkt(skb)) {
+	    (lancer_chip(adapter) || BE3_chip(adapter) ||
+	     skb_vlan_tag_present(skb)) && is_ipv4_pkt(skb)) {
 		ip = (struct iphdr *)ip_hdr(skb);
 		pskb_trim(skb, eth_hdr_len + ntohs(ip->tot_len));
 	}
-- 
2.39.2

[PATCH 4.19 26/41] netfilter: nf_tables: disallow element updates of bound anonymous sets

[Greg Kroah-Hartman]

From: Pablo Neira Ayuso <pablo@netfilter.org>

[ Upstream commit c88c535b592d3baeee74009f3eceeeaf0fdd5e1b ]

Anonymous sets come with NFT_SET_CONSTANT from userspace. Although API
allows to create anonymous sets without NFT_SET_CONSTANT, it makes no
sense to allow to add and to delete elements for bound anonymous sets.

Fixes: 96518518cc41 ("netfilter: add nftables")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/netfilter/nf_tables_api.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index 62bc4cd0b7bec..2968f21915ddf 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -4640,7 +4640,8 @@ static int nf_tables_newsetelem(struct net *net, struct sock *nlsk,
 	if (IS_ERR(set))
 		return PTR_ERR(set);
 
-	if (!list_empty(&set->bindings) && set->flags & NFT_SET_CONSTANT)
+	if (!list_empty(&set->bindings) &&
+	    (set->flags & (NFT_SET_CONSTANT | NFT_SET_ANONYMOUS)))
 		return -EBUSY;
 
 	nla_for_each_nested(attr, nla[NFTA_SET_ELEM_LIST_ELEMENTS], rem) {
@@ -4823,7 +4824,9 @@ static int nf_tables_delsetelem(struct net *net, struct sock *nlsk,
 	set = nft_set_lookup(ctx.table, nla[NFTA_SET_ELEM_LIST_SET], genmask);
 	if (IS_ERR(set))
 		return PTR_ERR(set);
-	if (!list_empty(&set->bindings) && set->flags & NFT_SET_CONSTANT)
+
+	if (!list_empty(&set->bindings) &&
+	    (set->flags & (NFT_SET_CONSTANT | NFT_SET_ANONYMOUS)))
 		return -EBUSY;
 
 	if (nla[NFTA_SET_ELEM_LIST_ELEMENTS] == NULL) {
-- 
2.39.2

[PATCH 4.19 27/41] netfilter: nfnetlink_osf: fix module autoload

[Greg Kroah-Hartman]

From: Pablo Neira Ayuso <pablo@netfilter.org>

[ Upstream commit 62f9a68a36d4441a6c412b81faed102594bc6670 ]

Move the alias from xt_osf to nfnetlink_osf.

Fixes: f9324952088f ("netfilter: nfnetlink_osf: extract nfnetlink_subsystem code from xt_osf.c")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/netfilter/nfnetlink_osf.c | 1 +
 net/netfilter/xt_osf.c        | 1 -
 2 files changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/netfilter/nfnetlink_osf.c b/net/netfilter/nfnetlink_osf.c
index 917f06110c823..21e4554c76955 100644
--- a/net/netfilter/nfnetlink_osf.c
+++ b/net/netfilter/nfnetlink_osf.c
@@ -442,3 +442,4 @@ module_init(nfnl_osf_init);
 module_exit(nfnl_osf_fini);
 
 MODULE_LICENSE("GPL");
+MODULE_ALIAS_NFNL_SUBSYS(NFNL_SUBSYS_OSF);
diff --git a/net/netfilter/xt_osf.c b/net/netfilter/xt_osf.c
index bf7bba80e24c1..226a317d52a0d 100644
--- a/net/netfilter/xt_osf.c
+++ b/net/netfilter/xt_osf.c
@@ -90,4 +90,3 @@ MODULE_AUTHOR("Evgeniy Polyakov <zbr@ioremap.net>");
 MODULE_DESCRIPTION("Passive OS fingerprint matching.");
 MODULE_ALIAS("ipt_osf");
 MODULE_ALIAS("ip6t_osf");
-MODULE_ALIAS_NFNL_SUBSYS(NFNL_SUBSYS_OSF);
-- 
2.39.2

[PATCH 4.19 28/41] sch_netem: acquire qdisc lock in netem_change()

[Greg Kroah-Hartman]

From: Eric Dumazet <edumazet@google.com>

[ Upstream commit 2174a08db80d1efeea382e25ac41c4e7511eb6d6 ]

syzbot managed to trigger a divide error [1] in netem.

It could happen if q->rate changes while netem_enqueue()
is running, since q->rate is read twice.

It turns out netem_change() always lacked proper synchronization.

[1]
divide error: 0000 [#1] SMP KASAN
CPU: 1 PID: 7867 Comm: syz-executor.1 Not tainted 6.1.30-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
RIP: 0010:div64_u64 include/linux/math64.h:69 [inline]
RIP: 0010:packet_time_ns net/sched/sch_netem.c:357 [inline]
RIP: 0010:netem_enqueue+0x2067/0x36d0 net/sched/sch_netem.c:576
Code: 89 e2 48 69 da 00 ca 9a 3b 42 80 3c 28 00 4c 8b a4 24 88 00 00 00 74 0d 4c 89 e7 e8 c3 4f 3b fd 48 8b 4c 24 18 48 89 d8 31 d2 <49> f7 34 24 49 01 c7 4c 8b 64 24 48 4d 01 f7 4c 89 e3 48 c1 eb 03
RSP: 0018:ffffc9000dccea60 EFLAGS: 00010246
RAX: 000001a442624200 RBX: 000001a442624200 RCX: ffff888108a4f000
RDX: 0000000000000000 RSI: 000000000000070d RDI: 000000000000070d
RBP: ffffc9000dcceb90 R08: ffffffff849c5e26 R09: fffffbfff10e1297
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888108a4f358
R13: dffffc0000000000 R14: 0000001a8cd9a7ec R15: 0000000000000000
FS: 00007fa73fe18700(0000) GS:ffff8881f6b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa73fdf7718 CR3: 000000011d36e000 CR4: 0000000000350ee0
Call Trace:
<TASK>
[<ffffffff84714385>] __dev_xmit_skb net/core/dev.c:3931 [inline]
[<ffffffff84714385>] __dev_queue_xmit+0xcf5/0x3370 net/core/dev.c:4290
[<ffffffff84d22df2>] dev_queue_xmit include/linux/netdevice.h:3030 [inline]
[<ffffffff84d22df2>] neigh_hh_output include/net/neighbour.h:531 [inline]
[<ffffffff84d22df2>] neigh_output include/net/neighbour.h:545 [inline]
[<ffffffff84d22df2>] ip_finish_output2+0xb92/0x10d0 net/ipv4/ip_output.c:235
[<ffffffff84d21e63>] __ip_finish_output+0xc3/0x2b0
[<ffffffff84d10a81>] ip_finish_output+0x31/0x2a0 net/ipv4/ip_output.c:323
[<ffffffff84d10f14>] NF_HOOK_COND include/linux/netfilter.h:298 [inline]
[<ffffffff84d10f14>] ip_output+0x224/0x2a0 net/ipv4/ip_output.c:437
[<ffffffff84d123b5>] dst_output include/net/dst.h:444 [inline]
[<ffffffff84d123b5>] ip_local_out net/ipv4/ip_output.c:127 [inline]
[<ffffffff84d123b5>] __ip_queue_xmit+0x1425/0x2000 net/ipv4/ip_output.c:542
[<ffffffff84d12fdc>] ip_queue_xmit+0x4c/0x70 net/ipv4/ip_output.c:556

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Stephen Hemminger <stephen@networkplumber.org>
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: Cong Wang <xiyou.wangcong@gmail.com>
Cc: Jiri Pirko <jiri@resnulli.us>
Reviewed-by: Jamal Hadi Salim <jhs@mojatatu.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Link: https://lore.kernel.org/r/20230620184425.1179809-1-edumazet@google.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/sched/sch_netem.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/net/sched/sch_netem.c b/net/sched/sch_netem.c
index 31793af1a77bd..93548b9e07cf1 100644
--- a/net/sched/sch_netem.c
+++ b/net/sched/sch_netem.c
@@ -943,6 +943,7 @@ static int netem_change(struct Qdisc *sch, struct nlattr *opt,
 	if (ret < 0)
 		return ret;
 
+	sch_tree_lock(sch);
 	/* backup q->clg and q->loss_model */
 	old_clg = q->clg;
 	old_loss_model = q->loss_model;
@@ -951,7 +952,7 @@ static int netem_change(struct Qdisc *sch, struct nlattr *opt,
 		ret = get_loss_clg(q, tb[TCA_NETEM_LOSS]);
 		if (ret) {
 			q->loss_model = old_loss_model;
-			return ret;
+			goto unlock;
 		}
 	} else {
 		q->loss_model = CLG_RANDOM;
@@ -1018,6 +1019,8 @@ static int netem_change(struct Qdisc *sch, struct nlattr *opt,
 	/* capping jitter to the range acceptable by tabledist() */
 	q->jitter = min_t(s64, abs(q->jitter), INT_MAX);
 
+unlock:
+	sch_tree_unlock(sch);
 	return ret;
 
 get_table_failure:
@@ -1027,7 +1030,8 @@ static int netem_change(struct Qdisc *sch, struct nlattr *opt,
 	 */
 	q->clg = old_clg;
 	q->loss_model = old_loss_model;
-	return ret;
+
+	goto unlock;
 }
 
 static int netem_init(struct Qdisc *sch, struct nlattr *opt,
-- 
2.39.2

[PATCH 4.19 29/41] scsi: target: iscsi: Prevent login threads from racing between each other

[Greg Kroah-Hartman]

From: Maurizio Lombardi <mlombard@redhat.com>

[ Upstream commit 2a737d3b8c792400118d6cf94958f559de9c5e59 ]

The tpg->np_login_sem is a semaphore that is used to serialize the login
process when multiple login threads run concurrently against the same
target portal group.

The iscsi_target_locate_portal() function finds the tpg, calls
iscsit_access_np() against the np_login_sem semaphore and saves the tpg
pointer in conn->tpg;

If iscsi_target_locate_portal() fails, the caller will check for the
conn->tpg pointer and, if it's not NULL, then it will assume that
iscsi_target_locate_portal() called iscsit_access_np() on the semaphore.

Make sure that conn->tpg gets initialized only if iscsit_access_np() was
successful, otherwise iscsit_deaccess_np() may end up being called against
a semaphore we never took, allowing more than one thread to access the same
tpg.

Signed-off-by: Maurizio Lombardi <mlombard@redhat.com>
Link: https://lore.kernel.org/r/20230508162219.1731964-4-mlombard@redhat.com
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/target/iscsi/iscsi_target_nego.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/target/iscsi/iscsi_target_nego.c b/drivers/target/iscsi/iscsi_target_nego.c
index 5db8842a80265..e39177f9fdb0a 100644
--- a/drivers/target/iscsi/iscsi_target_nego.c
+++ b/drivers/target/iscsi/iscsi_target_nego.c
@@ -1072,6 +1072,7 @@ int iscsi_target_locate_portal(
 	iscsi_target_set_sock_callbacks(conn);
 
 	login->np = np;
+	conn->tpg = NULL;
 
 	login_req = (struct iscsi_login_req *) login->req;
 	payload_length = ntoh24(login_req->dlength);
@@ -1141,7 +1142,6 @@ int iscsi_target_locate_portal(
 	 */
 	sessiontype = strncmp(s_buf, DISCOVERY, 9);
 	if (!sessiontype) {
-		conn->tpg = iscsit_global->discovery_tpg;
 		if (!login->leading_connection)
 			goto get_target;
 
@@ -1158,9 +1158,11 @@ int iscsi_target_locate_portal(
 		 * Serialize access across the discovery struct iscsi_portal_group to
 		 * process login attempt.
 		 */
+		conn->tpg = iscsit_global->discovery_tpg;
 		if (iscsit_access_np(np, conn->tpg) < 0) {
 			iscsit_tx_login_rsp(conn, ISCSI_STATUS_CLS_TARGET_ERR,
 				ISCSI_LOGIN_STATUS_SVC_UNAVAILABLE);
+			conn->tpg = NULL;
 			ret = -1;
 			goto out;
 		}
-- 
2.39.2

[PATCH 4.19 30/41] HID: wacom: Add error check to wacom_parse_and_register()

[Greg Kroah-Hartman]

From: Denis Arefev <arefev@swemel.ru>

[ Upstream commit 16a9c24f24fbe4564284eb575b18cc20586b9270 ]

   Added a variable check and
   transition in case of an error

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

Signed-off-by: Denis Arefev <arefev@swemel.ru>
Reviewed-by: Ping Cheng <ping.cheng@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/hid/wacom_sys.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/hid/wacom_sys.c b/drivers/hid/wacom_sys.c
index 4e4a3424c1f9f..c50b26a9bc445 100644
--- a/drivers/hid/wacom_sys.c
+++ b/drivers/hid/wacom_sys.c
@@ -2390,8 +2390,13 @@ static int wacom_parse_and_register(struct wacom *wacom, bool wireless)
 		goto fail_quirks;
 	}
 
-	if (features->device_type & WACOM_DEVICETYPE_WL_MONITOR)
+	if (features->device_type & WACOM_DEVICETYPE_WL_MONITOR) {
 		error = hid_hw_open(hdev);
+		if (error) {
+			hid_err(hdev, "hw open failed\n");
+			goto fail_quirks;
+		}
+	}
 
 	wacom_set_shared_values(wacom_wac);
 	devres_close_group(&hdev->dev, wacom);
-- 
2.39.2

[PATCH 4.19 31/41] arm64: Add missing Set/Way CMO encodings

[Greg Kroah-Hartman]

From: Marc Zyngier <maz@kernel.org>

[ Upstream commit 8d0f019e4c4f2ee2de81efd9bf1c27e9fb3c0460 ]

Add the missing Set/Way CMOs that apply to tagged memory.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Reviewed-by: Oliver Upton <oliver.upton@linux.dev>
Link: https://lore.kernel.org/r/20230515204601.1270428-2-maz@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm64/include/asm/sysreg.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h
index e90cf51b87eca..22266c7e2cc1e 100644
--- a/arch/arm64/include/asm/sysreg.h
+++ b/arch/arm64/include/asm/sysreg.h
@@ -98,8 +98,14 @@
 				       (!!x)<<8 | 0x1f)
 
 #define SYS_DC_ISW			sys_insn(1, 0, 7, 6, 2)
+#define SYS_DC_IGSW			sys_insn(1, 0, 7, 6, 4)
+#define SYS_DC_IGDSW			sys_insn(1, 0, 7, 6, 6)
 #define SYS_DC_CSW			sys_insn(1, 0, 7, 10, 2)
+#define SYS_DC_CGSW			sys_insn(1, 0, 7, 10, 4)
+#define SYS_DC_CGDSW			sys_insn(1, 0, 7, 10, 6)
 #define SYS_DC_CISW			sys_insn(1, 0, 7, 14, 2)
+#define SYS_DC_CIGSW			sys_insn(1, 0, 7, 14, 4)
+#define SYS_DC_CIGDSW			sys_insn(1, 0, 7, 14, 6)
 
 #define SYS_OSDTRRX_EL1			sys_reg(2, 0, 0, 0, 2)
 #define SYS_MDCCINT_EL1			sys_reg(2, 0, 0, 2, 0)
-- 
2.39.2

[PATCH 4.19 32/41] media: cec: core: dont set last_initiator if tx in progress

[Greg Kroah-Hartman]

From: Hans Verkuil <hverkuil-cisco@xs4all.nl>

[ Upstream commit 73af6c7511038249cad3d5f3b44bf8d78ac0f499 ]

When a message was received the last_initiator is set to 0xff.
This will force the signal free time for the next transmit
to that for a new initiator. However, if a new transmit is
already in progress, then don't set last_initiator, since
that's the initiator of the current transmit. Overwriting
this would cause the signal free time of a following transmit
to be that of the new initiator instead of a next transmit.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/media/cec/cec-adap.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/media/cec/cec-adap.c b/drivers/media/cec/cec-adap.c
index a42043379d676..2f49c4db49b35 100644
--- a/drivers/media/cec/cec-adap.c
+++ b/drivers/media/cec/cec-adap.c
@@ -1032,7 +1032,8 @@ void cec_received_msg_ts(struct cec_adapter *adap,
 	mutex_lock(&adap->lock);
 	dprintk(2, "%s: %*ph\n", __func__, msg->len, msg->msg);
 
-	adap->last_initiator = 0xff;
+	if (!adap->transmit_in_progress)
+		adap->last_initiator = 0xff;
 
 	/* Check if this message was for us (directed or broadcast). */
 	if (!cec_msg_is_broadcast(msg))
-- 
2.39.2

[PATCH 4.19 33/41] nfcsim.c: Fix error checking for debugfs_create_dir

[Greg Kroah-Hartman]

From: Osama Muhammad <osmtendev@gmail.com>

[ Upstream commit 9b9e46aa07273ceb96866b2e812b46f1ee0b8d2f ]

This patch fixes the error checking in nfcsim.c.
The DebugFS kernel API is developed in
a way that the caller can safely ignore the errors that
occur during the creation of DebugFS nodes.

Signed-off-by: Osama Muhammad <osmtendev@gmail.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/nfc/nfcsim.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/nfc/nfcsim.c b/drivers/nfc/nfcsim.c
index 533e3aa6275cd..cf07b366500e9 100644
--- a/drivers/nfc/nfcsim.c
+++ b/drivers/nfc/nfcsim.c
@@ -345,10 +345,6 @@ static struct dentry *nfcsim_debugfs_root;
 static void nfcsim_debugfs_init(void)
 {
 	nfcsim_debugfs_root = debugfs_create_dir("nfcsim", NULL);
-
-	if (!nfcsim_debugfs_root)
-		pr_err("Could not create debugfs entry\n");
-
 }
 
 static void nfcsim_debugfs_remove(void)
-- 
2.39.2

[PATCH 4.19 34/41] usb: gadget: udc: fix NULL dereference in remove()

[Greg Kroah-Hartman]

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

[ Upstream commit 016da9c65fec9f0e78c4909ed9a0f2d567af6775 ]

The "udc" pointer was never set in the probe() function so it will
lead to a NULL dereference in udc_pci_remove() when we do:

	usb_del_gadget_udc(&udc->gadget);

Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://lore.kernel.org/r/ZG+A/dNpFWAlCChk@kili
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/usb/gadget/udc/amd5536udc_pci.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/usb/gadget/udc/amd5536udc_pci.c b/drivers/usb/gadget/udc/amd5536udc_pci.c
index 362284057d307..a3d15c3fb82a9 100644
--- a/drivers/usb/gadget/udc/amd5536udc_pci.c
+++ b/drivers/usb/gadget/udc/amd5536udc_pci.c
@@ -171,6 +171,9 @@ static int udc_pci_probe(
 		retval = -ENODEV;
 		goto err_probe;
 	}
+
+	udc = dev;
+
 	return 0;
 
 err_probe:
-- 
2.39.2

[PATCH 4.19 35/41] s390/cio: unregister device when the only path is gone

[Greg Kroah-Hartman]

From: Vineeth Vijayan <vneethv@linux.ibm.com>

[ Upstream commit 89c0c62e947a01e7a36b54582fd9c9e346170255 ]

Currently, if the device is offline and all the channel paths are
either configured or varied offline, the associated subchannel gets
unregistered. Don't unregister the subchannel, instead unregister
offline device.

Signed-off-by: Vineeth Vijayan <vneethv@linux.ibm.com>
Reviewed-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/s390/cio/device.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index c9bc9a6bd73b7..ee4338158ae2e 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -1353,6 +1353,7 @@ void ccw_device_set_notoper(struct ccw_device *cdev)
 enum io_sch_action {
 	IO_SCH_UNREG,
 	IO_SCH_ORPH_UNREG,
+	IO_SCH_UNREG_CDEV,
 	IO_SCH_ATTACH,
 	IO_SCH_UNREG_ATTACH,
 	IO_SCH_ORPH_ATTACH,
@@ -1385,7 +1386,7 @@ static enum io_sch_action sch_get_action(struct subchannel *sch)
 	}
 	if ((sch->schib.pmcw.pam & sch->opm) == 0) {
 		if (ccw_device_notify(cdev, CIO_NO_PATH) != NOTIFY_OK)
-			return IO_SCH_UNREG;
+			return IO_SCH_UNREG_CDEV;
 		return IO_SCH_DISC;
 	}
 	if (device_is_disconnected(cdev))
@@ -1447,6 +1448,7 @@ static int io_subchannel_sch_event(struct subchannel *sch, int process)
 	case IO_SCH_ORPH_ATTACH:
 		ccw_device_set_disconnected(cdev);
 		break;
+	case IO_SCH_UNREG_CDEV:
 	case IO_SCH_UNREG_ATTACH:
 	case IO_SCH_UNREG:
 		if (!cdev)
@@ -1480,6 +1482,7 @@ static int io_subchannel_sch_event(struct subchannel *sch, int process)
 		if (rc)
 			goto out;
 		break;
+	case IO_SCH_UNREG_CDEV:
 	case IO_SCH_UNREG_ATTACH:
 		spin_lock_irqsave(sch->lock, flags);
 		if (cdev->private->flags.resuming) {
-- 
2.39.2

[PATCH 4.19 36/41] ASoC: nau8824: Add quirk to active-high jack-detect

[Greg Kroah-Hartman]

From: Edson Juliano Drosdeck <edson.drosdeck@gmail.com>

[ Upstream commit e384dba03e3294ce7ea69e4da558e9bf8f0e8946 ]

Add  entries for Positivo laptops: CW14Q01P, K1424G, N14ZP74G to the
DMI table, so that  active-high jack-detect will work properly on
these laptops.

Signed-off-by: Edson Juliano Drosdeck <edson.drosdeck@gmail.com>
Link: https://lore.kernel.org/r/20230529181911.632851-1-edson.drosdeck@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/soc/codecs/nau8824.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/sound/soc/codecs/nau8824.c b/sound/soc/codecs/nau8824.c
index 4f18bb272e929..0ecea65a80b46 100644
--- a/sound/soc/codecs/nau8824.c
+++ b/sound/soc/codecs/nau8824.c
@@ -1899,6 +1899,30 @@ static const struct dmi_system_id nau8824_quirk_table[] = {
 		},
 		.driver_data = (void *)(NAU8824_JD_ACTIVE_HIGH),
 	},
+	{
+		/* Positivo CW14Q01P */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Positivo Tecnologia SA"),
+			DMI_MATCH(DMI_BOARD_NAME, "CW14Q01P"),
+		},
+		.driver_data = (void *)(NAU8824_JD_ACTIVE_HIGH),
+	},
+	{
+		/* Positivo K1424G */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Positivo Tecnologia SA"),
+			DMI_MATCH(DMI_BOARD_NAME, "K1424G"),
+		},
+		.driver_data = (void *)(NAU8824_JD_ACTIVE_HIGH),
+	},
+	{
+		/* Positivo N14ZP74G */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Positivo Tecnologia SA"),
+			DMI_MATCH(DMI_BOARD_NAME, "N14ZP74G"),
+		},
+		.driver_data = (void *)(NAU8824_JD_ACTIVE_HIGH),
+	},
 	{}
 };
 
-- 
2.39.2

[PATCH 4.19 37/41] drm/exynos: vidi: fix a wrong error return

[Greg Kroah-Hartman]

From: Inki Dae <inki.dae@samsung.com>

[ Upstream commit 4a059559809fd1ddbf16f847c4d2237309c08edf ]

Fix a wrong error return by dropping an error return.

When vidi driver is remvoed, if ctx->raw_edid isn't same as fake_edid_info
then only what we have to is to free ctx->raw_edid so that driver removing
can work correctly - it's not an error case.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/exynos/exynos_drm_vidi.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_vidi.c b/drivers/gpu/drm/exynos/exynos_drm_vidi.c
index 19697c1362d8f..947c9627c565a 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_vidi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_vidi.c
@@ -480,8 +480,6 @@ static int vidi_remove(struct platform_device *pdev)
 	if (ctx->raw_edid != (struct edid *)fake_edid_info) {
 		kfree(ctx->raw_edid);
 		ctx->raw_edid = NULL;
-
-		return -EINVAL;
 	}
 
 	component_del(&pdev->dev, &vidi_component_ops);
-- 
2.39.2

[PATCH 4.19 38/41] drm/exynos: fix race condition UAF in exynos_g2d_exec_ioctl

[Greg Kroah-Hartman]

From: Min Li <lm0963hack@gmail.com>

[ Upstream commit 48bfd02569f5db49cc033f259e66d57aa6efc9a3 ]

If it is async, runqueue_node is freed in g2d_runqueue_worker on another
worker thread. So in extreme cases, if g2d_runqueue_worker runs first, and
then executes the following if statement, there will be use-after-free.

Signed-off-by: Min Li <lm0963hack@gmail.com>
Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/exynos/exynos_drm_g2d.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_g2d.c b/drivers/gpu/drm/exynos/exynos_drm_g2d.c
index f2481a2014bb3..2b7ecc02b2774 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_g2d.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_g2d.c
@@ -1327,7 +1327,7 @@ int exynos_g2d_exec_ioctl(struct drm_device *drm_dev, void *data,
 	/* Let the runqueue know that there is work to do. */
 	queue_work(g2d->g2d_workq, &g2d->runqueue_work);
 
-	if (runqueue_node->async)
+	if (req->async)
 		goto out;
 
 	wait_for_completion(&runqueue_node->complete);
-- 
2.39.2

[PATCH 4.19 39/41] drm/radeon: fix race condition UAF in radeon_gem_set_domain_ioctl

[Greg Kroah-Hartman]

From: Min Li <lm0963hack@gmail.com>

[ Upstream commit 982b173a6c6d9472730c3116051977e05d17c8c5 ]

Userspace can race to free the gobj(robj converted from), robj should not
be accessed again after drm_gem_object_put, otherwith it will result in
use-after-free.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Min Li <lm0963hack@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/radeon/radeon_gem.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/radeon/radeon_gem.c b/drivers/gpu/drm/radeon/radeon_gem.c
index 27d8e7dd2d067..46f7789693ea0 100644
--- a/drivers/gpu/drm/radeon/radeon_gem.c
+++ b/drivers/gpu/drm/radeon/radeon_gem.c
@@ -377,7 +377,6 @@ int radeon_gem_set_domain_ioctl(struct drm_device *dev, void *data,
 	struct radeon_device *rdev = dev->dev_private;
 	struct drm_radeon_gem_set_domain *args = data;
 	struct drm_gem_object *gobj;
-	struct radeon_bo *robj;
 	int r;
 
 	/* for now if someone requests domain CPU -
@@ -390,13 +389,12 @@ int radeon_gem_set_domain_ioctl(struct drm_device *dev, void *data,
 		up_read(&rdev->exclusive_lock);
 		return -ENOENT;
 	}
-	robj = gem_to_radeon_bo(gobj);
 
 	r = radeon_gem_set_domain(gobj, args->read_domains, args->write_domain);
 
 	drm_gem_object_put_unlocked(gobj);
 	up_read(&rdev->exclusive_lock);
-	r = radeon_gem_handle_lockup(robj->rdev, r);
+	r = radeon_gem_handle_lockup(rdev, r);
 	return r;
 }
 
-- 
2.39.2

[PATCH 4.19 40/41] x86/apic: Fix kernel panic when booting with intremap=off and x2apic_phys

[Greg Kroah-Hartman]

From: Dheeraj Kumar Srivastava <dheerajkumar.srivastava@amd.com>

[ Upstream commit 85d38d5810e285d5aec7fb5283107d1da70c12a9 ]

When booting with "intremap=off" and "x2apic_phys" on the kernel command
line, the physical x2APIC driver ends up being used even when x2APIC
mode is disabled ("intremap=off" disables x2APIC mode). This happens
because the first compound condition check in x2apic_phys_probe() is
false due to x2apic_mode == 0 and so the following one returns true
after default_acpi_madt_oem_check() having already selected the physical
x2APIC driver.

This results in the following panic:

   kernel BUG at arch/x86/kernel/apic/io_apic.c:2409!
   invalid opcode: 0000 [#1] PREEMPT SMP NOPTI
   CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.4.0-rc2-ver4.1rc2 #2
   Hardware name: Dell Inc. PowerEdge R6515/07PXPY, BIOS 2.3.6 07/06/2021
   RIP: 0010:setup_IO_APIC+0x9c/0xaf0
   Call Trace:
    <TASK>
    ? native_read_msr
    apic_intr_mode_init
    x86_late_time_init
    start_kernel
    x86_64_start_reservations
    x86_64_start_kernel
    secondary_startup_64_no_verify
    </TASK>

which is:

setup_IO_APIC:
  apic_printk(APIC_VERBOSE, "ENABLING IO-APIC IRQs\n");
  for_each_ioapic(ioapic)
  	BUG_ON(mp_irqdomain_create(ioapic));

Return 0 to denote that x2APIC has not been enabled when probing the
physical x2APIC driver.

  [ bp: Massage commit message heavily. ]

Fixes: 9ebd680bd029 ("x86, apic: Use probe routines to simplify apic selection")
Signed-off-by: Dheeraj Kumar Srivastava <dheerajkumar.srivastava@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Kishon Vijay Abraham I <kvijayab@amd.com>
Reviewed-by: Vasant Hegde <vasant.hegde@amd.com>
Reviewed-by: Cyrill Gorcunov <gorcunov@gmail.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20230616212236.1389-1-dheerajkumar.srivastava@amd.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/x86/kernel/apic/x2apic_phys.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/arch/x86/kernel/apic/x2apic_phys.c b/arch/x86/kernel/apic/x2apic_phys.c
index 8e70c2ba21b3d..fb17767552ef4 100644
--- a/arch/x86/kernel/apic/x2apic_phys.c
+++ b/arch/x86/kernel/apic/x2apic_phys.c
@@ -102,7 +102,10 @@ static void init_x2apic_ldr(void)
 
 static int x2apic_phys_probe(void)
 {
-	if (x2apic_mode && (x2apic_phys || x2apic_fadt_phys()))
+	if (!x2apic_mode)
+		return 0;
+
+	if (x2apic_phys || x2apic_fadt_phys())
 		return 1;
 
 	return apic == &apic_x2apic_phys;
-- 
2.39.2

[PATCH 4.19 41/41] i2c: imx-lpi2c: fix type char overflow issue when calculating the clock cycle

[Greg Kroah-Hartman]

From: Clark Wang <xiaoning.wang@nxp.com>

[ Upstream commit e69b9bc170c6d93ee375a5cbfd15f74c0fb59bdd ]

Claim clkhi and clklo as integer type to avoid possible calculation
errors caused by data overflow.

Fixes: a55fa9d0e42e ("i2c: imx-lpi2c: add low power i2c bus driver")
Signed-off-by: Clark Wang <xiaoning.wang@nxp.com>
Signed-off-by: Carlos Song <carlos.song@nxp.com>
Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/i2c/busses/i2c-imx-lpi2c.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/i2c/busses/i2c-imx-lpi2c.c b/drivers/i2c/busses/i2c-imx-lpi2c.c
index f494b27497005..a4f90796032b3 100644
--- a/drivers/i2c/busses/i2c-imx-lpi2c.c
+++ b/drivers/i2c/busses/i2c-imx-lpi2c.c
@@ -206,8 +206,8 @@ static void lpi2c_imx_stop(struct lpi2c_imx_struct *lpi2c_imx)
 /* CLKLO = I2C_CLK_RATIO * CLKHI, SETHOLD = CLKHI, DATAVD = CLKHI/2 */
 static int lpi2c_imx_config(struct lpi2c_imx_struct *lpi2c_imx)
 {
-	u8 prescale, filt, sethold, clkhi, clklo, datavd;
-	unsigned int clk_rate, clk_cycle;
+	u8 prescale, filt, sethold, datavd;
+	unsigned int clk_rate, clk_cycle, clkhi, clklo;
 	enum lpi2c_imx_pincfg pincfg;
 	unsigned int temp;
 
-- 
2.39.2

Re: [PATCH 4.19 00/41] 4.19.288-rc1 review

[Jon Hunter]

On Mon, 26 Jun 2023 20:11:23 +0200, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 4.19.288 release.
> There are 41 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 Wed, 28 Jun 2023 18:07:23 +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/v4.x/stable-review/patch-4.19.288-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-4.19.y
> and the diffstat can be found below.
> 
> thanks,
> 
> greg k-h

All tests passing for Tegra ...

Test results for stable-v4.19:
    10 builds:	10 pass, 0 fail
    22 boots:	22 pass, 0 fail
    40 tests:	40 pass, 0 fail

Linux version:	4.19.288-rc1-gd46c55c4b242
Boards tested:	tegra124-jetson-tk1, tegra186-p2771-0000,
                tegra194-p2972-0000, tegra20-ventana,
                tegra210-p2371-2180, tegra30-cardhu-a04

Tested-by: Jon Hunter <jonathanh@nvidia.com>

Jon

RE: [PATCH 4.19 00/41] 4.19.288-rc1 review

[Chris Paterson]

Hello Greg,

> From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Sent: Monday, June 26, 2023 7:11 PM
> 
> This is the start of the stable review cycle for the 4.19.288 release.
> There are 41 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 Wed, 28 Jun 2023 18:07:23 +0000.
> Anything received after that time might be too late.

Thank you for the release!

CIP configurations built and booted okay with Linux 4.19.288-rc1 (d46c55c4b242):
https://gitlab.com/cip-project/cip-testing/linux-stable-rc-ci/-/pipelines/912373201/
https://gitlab.com/cip-project/cip-testing/linux-stable-rc-ci/-/commits/linux-4.19.y

Tested-by: Chris Paterson (CIP) <chris.paterson2@renesas.com>

Kind regards, Chris

Re: [PATCH 4.19 00/41] 4.19.288-rc1 review

[Guenter Roeck]

On Mon, Jun 26, 2023 at 08:11:23PM +0200, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 4.19.288 release.
> There are 41 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 Wed, 28 Jun 2023 18:07:23 +0000.
> Anything received after that time might be too late.
> 

Build results:
	total: 155 pass: 155 fail: 0
Qemu test results:
	total: 431 pass: 431 fail: 0

Tested-by: Guenter Roeck <linux@roeck-us.net>

Guenter

Re: [PATCH 4.19 00/41] 4.19.288-rc1 review

[Naresh Kamboju]

On Mon, 26 Jun 2023 at 23:56, Greg Kroah-Hartman
<gregkh@linuxfoundation.org> wrote:
>
> This is the start of the stable review cycle for the 4.19.288 release.
> There are 41 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 Wed, 28 Jun 2023 18:07:23 +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/v4.x/stable-review/patch-4.19.288-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-4.19.y
> and the diffstat can be found below.
>
> thanks,
>
> greg k-h


Results from Linaro’s test farm.
No regressions on arm64, arm, x86_64, and i386.

Tested-by: Linux Kernel Functional Testing <lkft@linaro.org>

## Build
* kernel: 4.19.288-rc1
* git: https://gitlab.com/Linaro/lkft/mirrors/stable/linux-stable-rc
* git branch: linux-4.19.y
* git commit: d46c55c4b242c7dc4d40b4b2a0fb5dbac24ae5cd
* git describe: v4.19.287-42-gd46c55c4b242
* test details:
https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-4.19.y/build/v4.19.287-42-gd46c55c4b242

## Test Regressions (compared to v4.19.287)

## Metric Regressions (compared to v4.19.287)

## Test Fixes (compared to v4.19.287)

## Metric Fixes (compared to v4.19.287)

## Test result summary
total: 65773, pass: 51942, fail: 1892, skip: 11895, xfail: 44

## Build Summary
* arc: 10 total, 10 passed, 0 failed
* arm: 111 total, 106 passed, 5 failed
* arm64: 37 total, 32 passed, 5 failed
* i386: 21 total, 18 passed, 3 failed
* mips: 22 total, 22 passed, 0 failed
* parisc: 3 total, 3 passed, 0 failed
* powerpc: 24 total, 24 passed, 0 failed
* s390: 6 total, 6 passed, 0 failed
* sh: 12 total, 12 passed, 0 failed
* sparc: 6 total, 6 passed, 0 failed
* x86_64: 31 total, 26 passed, 5 failed

## Test suites summary
* boot
* kselftest-android
* kselftest-arm64
* kselftest-breakpoints
* kselftest-capabilities
* kselftest-cgroup
* kselftest-clone3
* kselftest-core
* kselftest-cpu-hotplug
* kselftest-cpufreq
* kselftest-drivers-dma-buf
* kselftest-efivarfs
* kselftest-filesystems
* kselftest-filesystems-binderfs
* kselftest-firmware
* kselftest-fpu
* kselftest-ftrace
* kselftest-futex
* kselftest-gpio
* kselftest-intel_pstate
* kselftest-ipc
* kselftest-ir
* kselftest-kcmp
* kselftest-kexec
* kselftest-lib
* kselftest-livepatch
* kselftest-membarrier
* kselftest-memfd
* kselftest-memory-hotplug
* kselftest-mincore
* kselftest-mount
* kselftest-mqueue
* kselftest-net
* kselftest-net-forwarding
* kselftest-net-mptcp
* kselftest-netfilter
* kselftest-nsfs
* kselftest-openat2
* kselftest-pid_namespace
* kselftest-pidfd
* kselftest-proc
* kselftest-pstore
* kselftest-ptrace
* kselftest-rseq
* kselftest-rtc
* kselftest-seccomp
* kselftest-sigaltstack
* kselftest-size
* kselftest-splice
* kselftest-static_keys
* kselftest-sync
* kselftest-sysctl
* kselftest-tc-testing
* kselftest-timens
* kselftest-timers
* kselftest-tmpfs
* kselftest-tpm2
* kselftest-user
* kselftest-x86
* kselftest-zram
* kunit
* libhugetlbfs
* log-parser-boot
* log-parser-test
* ltp-cap_bounds
* ltp-commands
* ltp-containers
* ltp-controllers
* ltp-cpuhotplug
* ltp-crypto
* ltp-cve
* ltp-dio
* ltp-fcntl-locktests
* ltp-filecaps
* ltp-fs
* ltp-fs_bind
* ltp-fs_perms_simple
* ltp-fsx
* ltp-hugetlb
* ltp-io
* ltp-ipc
* ltp-math
* ltp-mm
* ltp-nptl
* ltp-pty
* ltp-sched
* ltp-securebits
* ltp-smoke
* ltp-syscalls
* ltp-tracing
* network-basic-tests
* rcutorture
* v4l2-compliance
* vdso

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