From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Douglas Miller <doug.miller@cornelisnetworks.com>,
Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>,
Jason Gunthorpe <jgg@nvidia.com>, Sasha Levin <sashal@kernel.org>,
linux-rdma@vger.kernel.org
Subject: [PATCH AUTOSEL 5.15 35/37] RDMA/hfi1: Prevent panic when SDMA is disabled
Date: Wed, 1 Jun 2022 09:56:20 -0400 [thread overview]
Message-ID: <20220601135622.2003939-35-sashal@kernel.org> (raw)
In-Reply-To: <20220601135622.2003939-1-sashal@kernel.org>
From: Douglas Miller <doug.miller@cornelisnetworks.com>
[ Upstream commit 629e052d0c98e46dde9f0824f0aa437f678d9b8f ]
If the hfi1 module is loaded with HFI1_CAP_SDMA off, a call to
hfi1_write_iter() will dereference a NULL pointer and panic. A typical
stack frame is:
sdma_select_user_engine [hfi1]
hfi1_user_sdma_process_request [hfi1]
hfi1_write_iter [hfi1]
do_iter_readv_writev
do_iter_write
vfs_writev
do_writev
do_syscall_64
The fix is to test for SDMA in hfi1_write_iter() and fail the I/O with
EINVAL.
Link: https://lore.kernel.org/r/20220520183706.48973.79803.stgit@awfm-01.cornelisnetworks.com
Signed-off-by: Douglas Miller <doug.miller@cornelisnetworks.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/infiniband/hw/hfi1/file_ops.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/infiniband/hw/hfi1/file_ops.c b/drivers/infiniband/hw/hfi1/file_ops.c
index 1783a6ea5427..3ebdd42fec36 100644
--- a/drivers/infiniband/hw/hfi1/file_ops.c
+++ b/drivers/infiniband/hw/hfi1/file_ops.c
@@ -265,6 +265,8 @@ static ssize_t hfi1_write_iter(struct kiocb *kiocb, struct iov_iter *from)
unsigned long dim = from->nr_segs;
int idx;
+ if (!HFI1_CAP_IS_KSET(SDMA))
+ return -EINVAL;
idx = srcu_read_lock(&fd->pq_srcu);
pq = srcu_dereference(fd->pq, &fd->pq_srcu);
if (!cq || !pq) {
--
2.35.1
next prev parent reply other threads:[~2022-06-01 14:06 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-01 13:55 [PATCH AUTOSEL 5.15 01/37] IB/rdmavt: add missing locks in rvt_ruc_loopback Sasha Levin
2022-06-01 13:55 ` [PATCH AUTOSEL 5.15 02/37] ARM: dts: ox820: align interrupt controller node name with dtschema Sasha Levin
2022-06-01 13:55 ` [PATCH AUTOSEL 5.15 03/37] ARM: dts: socfpga: " Sasha Levin
2022-06-01 13:55 ` [PATCH AUTOSEL 5.15 04/37] ARM: dts: s5pv210: align DMA channels " Sasha Levin
2022-06-01 13:55 ` [PATCH AUTOSEL 5.15 05/37] arm64: dts: qcom: msm8994: Fix the cont_splash_mem address Sasha Levin
2022-06-01 13:55 ` [PATCH AUTOSEL 5.15 06/37] arm64: dts: qcom: msm8994: Fix BLSP[12]_DMA channels count Sasha Levin
2022-06-01 13:55 ` [PATCH AUTOSEL 5.15 07/37] PM / devfreq: rk3399_dmc: Disable edev on remove() Sasha Levin
2022-06-01 13:55 ` [PATCH AUTOSEL 5.15 08/37] crypto: ccree - use fine grained DMA mapping dir Sasha Levin
2022-06-01 13:55 ` [PATCH AUTOSEL 5.15 09/37] soc: ti: ti_sci_pm_domains: Check for null return of devm_kcalloc Sasha Levin
2022-06-01 13:55 ` [PATCH AUTOSEL 5.15 10/37] fs: jfs: fix possible NULL pointer dereference in dbFree() Sasha Levin
2022-06-01 13:55 ` [PATCH AUTOSEL 5.15 11/37] arm64: dts: qcom: sdm845-xiaomi-beryllium: fix typo in panel's vddio-supply property Sasha Levin
2022-06-01 13:55 ` [PATCH AUTOSEL 5.15 12/37] arm64: Expand ESR_ELx_WFx_ISS_TI to match its ARMv8.7 definition Sasha Levin
2022-06-01 13:55 ` [PATCH AUTOSEL 5.15 13/37] ALSA: usb-audio: Add quirk bits for enabling/disabling generic implicit fb Sasha Levin
2022-06-01 13:55 ` [PATCH AUTOSEL 5.15 14/37] ALSA: usb-audio: Move generic implicit fb quirk entries into quirks.c Sasha Levin
2022-06-01 13:56 ` [PATCH AUTOSEL 5.15 15/37] ARM: OMAP1: clock: Fix UART rate reporting algorithm Sasha Levin
2022-06-01 13:56 ` [PATCH AUTOSEL 5.15 16/37] selftests/resctrl: Change the default limited time to 120 seconds Sasha Levin
2022-06-01 13:56 ` [PATCH AUTOSEL 5.15 17/37] powerpc/fadump: Fix fadump to work with a different endian capture kernel Sasha Levin
2022-06-01 13:56 ` [PATCH AUTOSEL 5.15 18/37] fat: add ratelimit to fat*_ent_bread() Sasha Levin
2022-06-01 13:56 ` [PATCH AUTOSEL 5.15 19/37] pinctrl: renesas: rzn1: Fix possible null-ptr-deref in sh_pfc_map_resources() Sasha Levin
2022-06-01 13:56 ` [PATCH AUTOSEL 5.15 20/37] ARM: versatile: Add missing of_node_put in dcscb_init Sasha Levin
2022-06-01 13:56 ` [PATCH AUTOSEL 5.15 21/37] ARM: dts: exynos: add atmel,24c128 fallback to Samsung EEPROM Sasha Levin
2022-06-01 13:56 ` [PATCH AUTOSEL 5.15 22/37] ARM: hisi: Add missing of_node_put after of_find_compatible_node Sasha Levin
2022-06-01 13:56 ` [PATCH AUTOSEL 5.15 23/37] cpufreq: Avoid unnecessary frequency updates due to mismatch Sasha Levin
2022-06-01 13:56 ` [PATCH AUTOSEL 5.15 24/37] powerpc/rtas: Keep MSR[RI] set when calling RTAS Sasha Levin
2022-06-01 13:56 ` [PATCH AUTOSEL 5.15 25/37] PCI: Avoid pci_dev_lock() AB/BA deadlock with sriov_numvfs_store() Sasha Levin
2022-06-01 13:56 ` [PATCH AUTOSEL 5.15 26/37] KVM: PPC: Book3S HV Nested: L2 LPCR should inherit L1 LPES setting Sasha Levin
2022-06-01 13:56 ` [PATCH AUTOSEL 5.15 27/37] alpha: fix alloc_zeroed_user_highpage_movable() Sasha Levin
2022-06-01 13:56 ` [PATCH AUTOSEL 5.15 28/37] tracing: incorrect isolate_mote_t cast in mm_vmscan_lru_isolate Sasha Levin
2022-06-01 13:56 ` [PATCH AUTOSEL 5.15 29/37] powerpc/powernv/vas: Assign real address to rx_fifo in vas_rx_win_attr Sasha Levin
2022-06-01 13:56 ` [PATCH AUTOSEL 5.15 30/37] powerpc/xics: fix refcount leak in icp_opal_init() Sasha Levin
2022-06-01 13:56 ` [PATCH AUTOSEL 5.15 31/37] powerpc/powernv: fix missing of_node_put in uv_init() Sasha Levin
2022-06-01 13:56 ` [PATCH AUTOSEL 5.15 32/37] macintosh/via-pmu: Fix build failure when CONFIG_INPUT is disabled Sasha Levin
2022-06-01 13:56 ` [PATCH AUTOSEL 5.15 33/37] powerpc/iommu: Add missing of_node_put in iommu_init_early_dart Sasha Levin
2022-06-01 13:56 ` [PATCH AUTOSEL 5.15 34/37] smb3: check for null tcon Sasha Levin
2022-06-01 13:56 ` Sasha Levin [this message]
2022-06-01 13:56 ` [PATCH AUTOSEL 5.15 36/37] Input: gpio-keys - cancel delayed work only in case of GPIO Sasha Levin
2022-06-01 13:56 ` [PATCH AUTOSEL 5.15 37/37] drm: fix EDID struct for old ARM OABI format Sasha Levin
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