AuxXxilium/linux_dsm_epyc7002
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285b57595d
linux_dsm_epyc7002/drivers/dma
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Dave Jiang 285b57595d dmaengine: move channel device_node deletion to driver 
commit e594443196d6e0ef3d3b30320c49b3a4d4f9a547 upstream.

Channel device_node deletion is managed by the device driver rather than
the dmaengine core. The deletion was accidentally introduced when making
channel unregister dynamic. It causes xilinx_dma module to crash on unload
as reported by Radhey. Remove chan->device_node delete in dmaengine and
also fix up idxd driver.

[   42.142705] Internal error: Oops: 96000044 [#1] SMP
[   42.147566] Modules linked in: xilinx_dma(-) clk_xlnx_clock_wizard uio_pdrv_genirq
[   42.155139] CPU: 1 PID: 2075 Comm: rmmod Not tainted 5.10.1-00026-g3a2e6dd7a05-dirty #192
[   42.163302] Hardware name: Enclustra XU5 SOM (DT)
[   42.167992] pstate: 40000005 (nZcv daif -PAN -UAO -TCO BTYPE=--)
[   42.173996] pc : xilinx_dma_chan_remove+0x74/0xa0 [xilinx_dma]
[   42.179815] lr : xilinx_dma_chan_remove+0x70/0xa0 [xilinx_dma]
[   42.185636] sp : ffffffc01112bca0
[   42.188935] x29: ffffffc01112bca0 x28: ffffff80402ea640

xilinx_dma_chan_remove+0x74/0xa0:
__list_del at ./include/linux/list.h:112 (inlined by)
__list_del_entry at./include/linux/list.h:135 (inlined by)
list_del at ./include/linux/list.h:146 (inlined by)
xilinx_dma_chan_remove at drivers/dma/xilinx/xilinx_dma.c:2546

Fixes: e81274cd6b ("dmaengine: add support to dynamic register/unregister of channels")
Reported-by: Radhey Shyam Pandey <radheys@xilinx.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Tested-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Link: https://lore.kernel.org/r/161099092469.2495902.5064826526660062342.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Cc: stable@vger.kernel.org # 5.9+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-02-17 11:02:21 +01:00
..
bestcomm treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
dw dmaengine: dw: convert tasklets to use new tasklet_setup() API 2020-09-18 12:18:11 +05:30
dw-axi-dmac dmaengine: virt-dma: Add missing locking 2019-12-26 10:04:18 +05:30
dw-edma dmaengine: dw-edma: Fix use after free in dw_edma_alloc_chunk() 2021-01-17 14:16:59 +01:00
fsl-dpaa2-qdma dmaengine: fsl-dpaa2-qdma: remove set but not used variable 'dpaa2_qdma' 2020-03-06 19:04:55 +05:30
hsu dmaengine updates for v5.3-rc1 2019-07-17 09:55:43 -07:00
idxd dmaengine: move channel device_node deletion to driver 2021-02-17 11:02:21 +01:00
ioat dmaengine: ioatdma: remove unused function missed during dma_v2 removal 2020-11-16 22:42:28 +05:30
ipu dmaengine: ipu: convert tasklets to use new tasklet_setup() API 2020-09-18 12:19:06 +05:30
mediatek dmaengine: mediatek: mtk-hsdma: Fix a resource leak in the error handling path of the probe function 2021-01-17 14:17:01 +01:00
ppc4xx dmaengine: ppc4xx: convert tasklets to use new tasklet_setup() API 2020-09-18 12:19:07 +05:30
qcom dmaengine: qcom: bam_dma: fix kernel-doc style for tasklet 2020-10-08 15:18:41 +05:30
sf-pdma dmaengine: sf-pdma: convert tasklets to use new tasklet_setup() API 2020-10-07 15:22:09 +05:30
sh dmaengine: rcar-dmac: drop double zeroing 2020-10-05 10:18:08 +05:30
ti dmaengine: ti: k3-udma: Correct normal channel offset when uchan_cnt is not 0 2020-12-30 11:53:51 +01:00
xilinx dmaengine: xilinx_dma: fix mixed_enum_type coverity warning 2021-01-17 14:17:02 +01:00
acpi-dma.c dmaengine: acpi: Put the CSRT table after using it 2020-08-17 10:21:37 +05:30
altera-msgdma.c dmaengine: altera-msgdma: fix kernel-doc style for tasklet 2020-10-08 15:18:37 +05:30
amba-pl08x.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
at_hdmac_regs.h dmaengine: at_hdmac: Replace zero-length array with flexible-array 2020-05-13 20:25:16 +05:30
at_hdmac.c dmaengine: at_hdmac: convert tasklets to use new tasklet_setup() API 2020-09-18 12:18:11 +05:30
at_xdmac.c dmaengine: at_xdmac: convert tasklets to use new tasklet_setup() API 2020-09-18 12:18:11 +05:30
bcm2835-dma.c dmaengine: bcm2835: Drop local dma_parms 2020-09-11 17:42:12 +05:30
bcm-sba-raid.c dmaengine: bcm-sba-raid: Replace zero-length array with flexible-array member 2020-02-13 20:15:35 +05:30
coh901318_lli.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 194 2019-05-30 11:29:22 -07:00
coh901318.c dmaengine: coh901318: convert tasklets to use new tasklet_setup() API 2020-09-18 12:18:11 +05:30
coh901318.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 194 2019-05-30 11:29:22 -07:00
dma-axi-dmac.c dmaengine: axi-dmac: Drop local dma_parms 2020-09-11 17:42:12 +05:30
dma-jz4780.c dmaengine: dma-jz4780: Fix race in jz4780_dma_tx_status 2020-10-05 09:58:48 +05:30
dmaengine.c dmaengine: move channel device_node deletion to driver 2021-02-17 11:02:21 +01:00
dmaengine.h dmaengine: Create debug directories for DMA devices 2020-03-11 14:56:14 +05:30
dmatest.c dmaengine: dmatest: Return boolean result directly in filter() 2020-09-22 20:18:41 +05:30
ep93xx_dma.c dmaengine: ep93xx: convert tasklets to use new tasklet_setup() API 2020-09-18 12:18:11 +05:30
fsl_raid.c dmaengine: fsl: remove bad channel update 2020-10-05 09:59:17 +05:30
fsl_raid.h
fsl-edma-common.c dmaengine: fsl-edma: fix wrong tcd endianness for big-endian cpu 2020-07-06 14:49:22 +05:30
fsl-edma-common.h dmaengine: fsl-edma-common: correct DSIZE_32BYTE 2020-07-06 10:24:49 +05:30
fsl-edma.c dmaengine: fsl-edma: Fix NULL pointer exception in fsl_edma_tx_handler 2020-06-24 13:05:01 +05:30
fsl-qdma.c dmaengine: Extend NXP QDMA driver to check transmission errors 2020-07-17 11:50:03 +05:30
fsldma.c dmaengine: fsl: convert tasklets to use new tasklet_setup() API 2020-09-18 12:21:07 +05:30
fsldma.h fsldma: fix very broken 32-bit ppc ioread64 functionality 2020-08-29 13:50:56 -07:00
hisi_dma.c dmaengine: hisilicon: Use struct_size() in devm_kzalloc() 2020-06-24 11:26:23 +05:30
idma64.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
idma64.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
img-mdc-dma.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 422 2019-06-05 17:37:15 +02:00
imx-dma.c dmaengine: imx-dma: convert tasklets to use new tasklet_setup() API 2020-09-18 12:19:06 +05:30
imx-sdma.c dmaengine: imx-sdma: Drop local dma_parms 2020-09-11 17:42:13 +05:30
iop-adma.c Merge branch 'topic/tasklet' into next 2020-10-01 10:18:59 +05:30
iop-adma.h treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
k3dma.c dmaengine: k3dma: convert tasklets to use new tasklet_setup() API 2020-09-18 12:19:06 +05:30
Kconfig misc: mic: remove the MIC drivers 2020-10-28 19:12:03 +01:00
lpc18xx-dmamux.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
Makefile misc: mic: remove the MIC drivers 2020-10-28 19:12:03 +01:00
mcf-edma.c dmaengine: mcf-edma: Fix NULL pointer exception in mcf_edma_tx_handler 2020-06-24 13:06:15 +05:30
milbeaut-hdmac.c dmaengine: Replace zero-length array with flexible-array 2020-06-15 23:08:30 -05:00
milbeaut-xdmac.c dmaengine: milbeaut-xdmac: Fix a resource leak in the error handling path of the probe function 2021-01-17 14:17:02 +01:00
mmp_pdma.c dmaengine: mmp: convert tasklets to use new tasklet_setup() API 2020-09-18 12:19:06 +05:30
mmp_tdma.c dmaengine: mmp: convert tasklets to use new tasklet_setup() API 2020-09-18 12:19:06 +05:30
moxart-dma.c dmaengine: Replace zero-length array with flexible-array 2020-06-15 23:08:30 -05:00
mpc512x_dma.c dmaengine: mpc512x: convert tasklets to use new tasklet_setup() API 2020-09-18 12:19:06 +05:30
mv_xor_v2.c dmaengine: mv_xor_v2: Fix error return code in mv_xor_v2_probe() 2020-12-30 11:53:21 +01:00
mv_xor.c dmaengine: mv_xor: convert tasklets to use new tasklet_setup() API 2020-09-18 12:19:06 +05:30
mv_xor.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288 2019-06-05 17:36:37 +02:00
mxs-dma.c dmaengine: mxs-dma: convert tasklets to use new tasklet_setup() API 2020-09-18 12:19:06 +05:30
nbpfaxi.c dmaengine: nbpfaxi: convert tasklets to use new tasklet_setup() API 2020-09-18 12:19:06 +05:30
of-dma.c dmaengine: of-dma: Fix of_dma_router_xlate's of_dma_xlate handling 2020-08-17 11:14:28 +05:30
owl-dma.c dmaengine: owl-dma: fix kernel-doc style for enum 2020-10-08 15:18:48 +05:30
pch_dma.c dmaengine: pch_dma: convert tasklets to use new tasklet_setup() API 2020-09-18 12:19:06 +05:30
pl330.c dmaengine: pl330: _prep_dma_memcpy: Fix wrong burst size 2020-11-16 22:44:23 +05:30
plx_dma.c dmaengine: plx_dma: convert tasklets to use new tasklet_setup() API 2020-09-18 12:19:07 +05:30
pxa_dma.c dmaengine updates for v5.3-rc1 2019-07-17 09:55:43 -07:00
s3c24xx-dma.c dmaengine: s3c24xx-dma: fix spelling mistake "to" -> "too" 2020-01-23 17:03:25 +05:30
sa11x0-dma.c dmaengine: sa11x0: convert tasklets to use new tasklet_setup() API 2020-09-18 12:19:07 +05:30
sirf-dma.c dmaengine: sirf-dma: convert tasklets to use new tasklet_setup() API 2020-09-18 12:19:07 +05:30
sprd-dma.c dmaengine: sprd: Set request pending flag when DMA controller is active 2020-03-23 11:38:24 +05:30
st_fdma.c iov_iter: Move unnecessary inclusion of crypto/hash.h 2020-06-30 09:34:23 -04:00
st_fdma.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
ste_dma40_ll.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 194 2019-05-30 11:29:22 -07:00
ste_dma40_ll.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 194 2019-05-30 11:29:22 -07:00
ste_dma40.c dmaengine: ste_dma40: convert tasklets to use new tasklet_setup() API 2020-09-18 12:19:07 +05:30
stm32-dma.c dmaengine: stm32: Simplify with dev_err_probe() 2020-09-03 12:38:59 +05:30
stm32-dmamux.c dmaengine: stm32: Simplify with dev_err_probe() 2020-09-03 12:38:59 +05:30
stm32-mdma.c dmaengine: stm32: Simplify with dev_err_probe() 2020-09-03 12:38:59 +05:30
sun4i-dma.c dmaengine: sun4i-dma: Demote obvious misuse of kerneldoc to standard comment blocks 2020-07-15 17:50:47 +05:30
sun6i-dma.c dmaengine: sun6i: convert tasklets to use new tasklet_setup() API 2020-09-18 12:19:07 +05:30
tegra20-apb-dma.c dmaengine: tegra20: convert tasklets to use new tasklet_setup() API 2020-09-18 12:19:07 +05:30
tegra210-adma.c dmaengine: tegra210-adma: Fix runtime PM imbalance on error 2020-06-24 15:11:39 +05:30
timb_dma.c dmaengine: timb_dma: convert tasklets to use new tasklet_setup() API 2020-09-18 12:19:07 +05:30
TODO
txx9dmac.c dmaengine: txx9dmac: convert tasklets to use new tasklet_setup() API 2020-09-18 12:19:07 +05:30
txx9dmac.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
uniphier-mdmac.c dmaengine: uniphier-mdmac: replace zero-length array with flexible-array member 2020-02-13 20:15:57 +05:30
uniphier-xdmac.c iov_iter: Move unnecessary inclusion of crypto/hash.h 2020-06-30 09:34:23 -04:00
virt-dma.c dmaengine: virt-dma: convert tasklets to use new tasklet_setup() API 2020-09-18 12:19:07 +05:30
virt-dma.h dmaengine: virt-dma: Add missing locking around list operations 2019-12-26 10:04:18 +05:30
xgene-dma.c dmaengine: xgene: convert tasklets to use new tasklet_setup() API 2020-09-18 12:19:07 +05:30
zx_dma.c dmaengine: zx: remove redundant irqsave in hardIRQ 2020-09-18 12:30:50 +05:30