mirror-linux/drivers/dma
Eric Pilmore 8ae2113702 dmaengine: ptdma: check for null desc before calling pt_cmd_callback
[ Upstream commit 9284699861 ]

Resolves a panic that can occur on AMD systems, typically during host
shutdown, after the PTDMA driver had been exercised. The issue was
the pt_issue_pending() function is mistakenly assuming that there will
be at least one descriptor in the Submitted queue when the function
is called. However, it is possible that both the Submitted and Issued
queues could be empty, which could result in pt_cmd_callback() being
mistakenly called with a NULL pointer.
Ref: Bugzilla Bug 216856.

Fixes: 6fa7e0e836 ("dmaengine: ptdma: fix concurrency issue with multiple dma transfer")
Signed-off-by: Eric Pilmore <epilmore@gigaio.com>
Link: https://lore.kernel.org/r/20230210075142.58253-1-epilmore@gigaio.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-03-10 09:33:39 +01:00
..
bestcomm treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_56.RULE (part 2) 2022-06-10 14:51:35 +02:00
dw dmaengine updates for v6.0-rc1 2022-08-04 18:44:38 -07:00
dw-axi-dmac dmaengine: dw-axi-dmac: Do not dereference NULL structure 2023-03-10 09:33:39 +01:00
dw-edma dmaengine: dw-edma: Fix readq_ch() return value truncation 2023-03-10 09:33:38 +01:00
fsl-dpaa2-qdma dmaengine: fsl-dpaa2-qdma: Drop comma after SoC match table sentinel 2022-03-11 15:47:39 +05:30
hsu dmaengine: hsu: Include headers we are direct user of 2022-09-04 22:49:35 +05:30
idxd dmaengine: idxd: Set traffic class values in GRPCFG on DSA 2.0 2023-03-10 09:33:28 +01:00
ioat dmaengine: ioat: remove unused declarations in dma.h 2022-09-29 22:46:09 +05:30
ipu
lgm dmaengine: lgm: Move DT parsing after initialization 2023-01-24 07:24:39 +01:00
mediatek dmaengine: mediatek: mtk-hsdma: Fix typo 'the the' in comment 2022-07-26 22:06:05 +05:30
ppc4xx treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_406.RULE 2022-06-10 14:51:37 +02:00
ptdma dmaengine: ptdma: check for null desc before calling pt_cmd_callback 2023-03-10 09:33:39 +01:00
qcom dmaengine: qcom: gpi: Set link_rx bit on GO TRE for rx operation 2023-02-01 08:34:02 +01:00
sf-pdma dmaengine: sf-pdma: pdma_desc memory leak fix 2023-03-10 09:33:39 +01:00
sh dmaengine: sh: rcar-dmac: Replace zero-length arrays with DECLARE_FLEX_ARRAY() helper 2022-09-29 21:14:32 +05:30
ti dmaengine: ti: k3-udma: Do conditional decrement of UDMA_CHAN_RT_PEER_BCNT_REG 2023-02-01 08:34:02 +01:00
xilinx dmaengine: xilinx_dma: call of_node_put() when breaking out of for_each_child_of_node() 2023-02-01 08:34:24 +01:00
Kconfig dmaengine: HISI_DMA should depend on ARCH_HISI 2023-03-10 09:33:28 +01:00
Makefile dmaengine: apple-admac: Add Apple ADMAC driver 2022-06-09 12:20:20 +05:30
TODO
acpi-dma.c
altera-msgdma.c dmaengine: altera-msgdma: Fixed some inconsistent function name descriptions 2022-07-06 22:00:06 +05:30
amba-pl08x.c dmaengine: pl08x: Fix double word 2022-09-29 12:24:16 +05:30
apple-admac.c dmaengine: apple-admac: Allocate cache SRAM to channels 2022-12-31 13:32:46 +01:00
at_hdmac.c dmaengine: at_hdmac: Check return code of dma_async_device_register 2022-11-08 10:43:57 +05:30
at_hdmac_regs.h dmaengine: at_hdmac: Fix at_lli struct definition 2022-11-08 10:43:56 +05:30
at_xdmac.c dmaengine: at_xdmac: Replace two if statements with only one with two conditions 2022-09-05 12:01:55 +05:30
bcm-sba-raid.c treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_30.RULE (part 2) 2022-06-10 14:51:35 +02:00
bcm2835-dma.c
dma-axi-dmac.c dmaengine: axi-dmac: check cache coherency register 2022-07-26 22:05:20 +05:30
dma-jz4780.c dmaengine: jz4780: fix typo in comment 2022-07-06 10:51:43 +05:30
dmaengine.c dmaengine: Fix double increment of client_count in dma_chan_get() 2023-02-01 08:34:23 +01:00
dmaengine.h
dmatest.c treewide: use get_random_bytes() when possible 2022-10-11 17:42:58 -06:00
ep93xx_dma.c dmaengine: ep93xx: Fix typo in comments 2022-07-01 21:50:23 +05:30
fsl-edma-common.c dmaengine: fsl-edma: remove redundant assignment to pointer last_sg 2022-07-01 22:09:16 +05:30
fsl-edma-common.h
fsl-edma.c
fsl-qdma.c
fsl_raid.c
fsl_raid.h
fsldma.c
fsldma.h
hisi_dma.c dmaengine: hisilicon: Dump regs to debugfs 2022-09-04 22:42:35 +05:30
idma64.c
idma64.h
img-mdc-dma.c
imx-dma.c dmaengine: imx-dma: Cast of_device_get_match_data() with (uintptr_t) 2022-07-21 18:08:35 +05:30
imx-sdma.c dmaengine: imx-sdma: Fix a possible memory leak in sdma_transfer_init 2023-02-06 08:06:33 +01:00
iop-adma.c
iop-adma.h
k3dma.c
lpc18xx-dmamux.c
mcf-edma.c
milbeaut-hdmac.c
milbeaut-xdmac.c
mmp_pdma.c dmaengine: mmp: deprecate '#dma-channels' 2022-05-19 22:53:46 +05:30
mmp_tdma.c
moxart-dma.c treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_56.RULE (part 2) 2022-06-10 14:51:35 +02:00
mpc512x_dma.c
mv_xor.c
mv_xor.h
mv_xor_v2.c dmaengine: mv_xor_v2: Fix a resource leak in mv_xor_v2_remove() 2022-11-08 10:43:56 +05:30
mxs-dma.c dmaengine: mxs: use platform_driver_register 2022-09-29 12:05:20 +05:30
nbpfaxi.c dmaengine: nbpfaxi: Use platform_get_irq_optional() to get the interrupt 2022-04-11 16:26:53 +05:30
of-dma.c
owl-dma.c dmaengine: owl: fix typo in comment 2022-07-06 10:50:43 +05:30
pch_dma.c dmaengine: pch_dma: Remove usage of the deprecated "pci-dma-compat.h" API 2022-01-08 22:16:44 +05:30
pl330.c dmaengine: pl330: Remove unused flags 2022-09-05 12:01:54 +05:30
plx_dma.c dmaengine: plx_dma: Move spin_lock_bh() to spin_lock() 2022-04-20 15:59:33 +05:30
pxa_dma.c dmaengine: pxa_dma: use platform_get_irq_optional 2022-11-08 10:42:51 +05:30
s3c24xx-dma.c dmaengine: virt-dma: Fix double word in comments 2022-09-29 12:22:27 +05:30
sa11x0-dma.c
sprd-dma.c dmaengine: sprd: Cleanup in .remove() after pm_runtime_get_sync() failed 2022-07-26 18:20:49 +05:30
st_fdma.c
st_fdma.h
ste_dma40.c dmaengine: ste_dma40: fix typo in comment 2022-07-06 10:54:08 +05:30
ste_dma40_ll.c
ste_dma40_ll.h
stm32-dma.c dmaengine: stm32-dma: fix potential race between pause and resume 2022-11-08 10:43:56 +05:30
stm32-dmamux.c dmaengine: stm32-dmamux: Simplify code and save a few bytes of memory 2022-09-05 11:52:28 +05:30
stm32-mdma.c dmaengine: stm32-mdma: memset stm32_mdma_chan_config struct before using it 2022-10-19 19:01:19 +05:30
sun4i-dma.c dmaengine: sun4i: Set the maximum segment size 2022-07-05 18:34:26 +05:30
sun6i-dma.c dmaengine: sun6i: Add support for the D1 variant 2022-05-19 23:43:41 +05:30
tegra20-apb-dma.c dmaengine: tegra20-apb: stop checking config->slave_id 2021-12-17 11:23:38 +05:30
tegra186-gpc-dma.c dmaengine: tegra: Fix memory leak in terminate_all() 2023-02-01 08:34:24 +01:00
tegra210-adma.c dmaengine: tegra210-adma: fix global intr clear 2023-01-24 07:24:39 +01:00
timb_dma.c
txx9dmac.c
txx9dmac.h
uniphier-mdmac.c
uniphier-xdmac.c dmaengine: uniphier-xdmac: Fix type of address variables 2022-01-03 17:49:37 +05:30
virt-dma.c
virt-dma.h
xgene-dma.c