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linux-stable/drivers/dma
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Adam Wallis 6f6a23a213 dmaengine: dmatest: move callback wait queue to thread context 
Commit adfa543e73 ("dmatest: don't use set_freezable_with_signal()")
introduced a bug (that is in fact documented by the patch commit text)
that leaves behind a dangling pointer. Since the done_wait structure is
allocated on the stack, future invocations to the DMATEST can produce
undesirable results (e.g., corrupted spinlocks).

Commit a9df21e34b ("dmaengine: dmatest: warn user when dma test times
out") attempted to WARN the user that the stack was likely corrupted but
did not fix the actual issue.

This patch fixes the issue by pushing the wait queue and callback
structs into the the thread structure. If a failure occurs due to time,
dmaengine_terminate_all will force the callback to safely call
wake_up_all() without possibility of using a freed pointer.

Cc: stable@vger.kernel.org
Bug: https://bugzilla.kernel.org/show_bug.cgi?id=197605
Fixes: adfa543e73 ("dmatest: don't use set_freezable_with_signal()")
Reviewed-by: Sinan Kaya <okaya@codeaurora.org>
Suggested-by: Shunyong Yang <shunyong.yang@hxt-semitech.com>
Signed-off-by: Adam Wallis <awallis@codeaurora.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2017-12-11 08:46:24 +05:30
..
bestcomm License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
dw License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hsu serial: 8250_mid: handle interrupt correctly in DMA case 2017-01-19 14:20:23 +01:00
ioat dmaengine: ioat: Fix error handling path 2017-11-29 19:47:46 +05:30
ipu dmaengine: ipu: Make sure the interrupt routine checks all interrupts. 2017-01-02 10:48:44 +05:30
ppc4xx Merge branch 'topic/ppc4xx' into for-linus 2017-09-06 21:54:41 +05:30
qcom dmaengine updates for 4.15-rc1 2017-11-14 16:49:31 -08:00
sh dmaengine: Revert "rcar-dmac: use TCRB instead of TCR for residue" 2017-11-08 11:04:49 +05:30
xilinx dmaengine: xilinx_dma: Move enum xdma_ip_type to driver file 2017-09-17 18:59:54 +05:30
acpi-dma.c
altera-msgdma.c dmaengine: altera: Use IRQ-safe spinlock calls in the error paths as well 2017-10-20 11:51:10 +05:30
amba-pl08x.c dmaengine: pl08x: constify amba_id 2017-08-28 21:11:08 +05:30
at_hdmac.c dmaengine: at_hdmac: fix potential NULL pointer dereference in atc_prep_dma_interleaved 2017-11-29 19:48:17 +05:30
at_hdmac_regs.h dmaengine: at_hdmac: Remove unnecessary 0x prefixes before %pad 2017-11-08 10:47:04 +05:30
at_xdmac.c dmaengine: at_xdmac: Handle return value of clk_prepare_enable. 2017-08-21 22:20:44 +05:30
bcm-sba-raid.c dmaengine: bcm-sba-raid: Use common GPL comment header 2017-10-23 11:35:47 +05:30
bcm2835-dma.c dmaengine: bcm2835: Fix cyclic DMA period splitting 2017-03-06 08:49:11 +05:30
coh901318.c dmaengine: coh901318: Remove unnecessary 0x prefixes before %pad 2017-11-08 10:46:46 +05:30
coh901318.h
coh901318_lli.c
cppi41.c dmaengine: cppi41: Fix an Oops happening in cppi41_dma_probe() 2017-04-06 12:41:59 +05:30
dma-axi-dmac.c dmaengine: axi-dmac: Fix software cyclic mode 2017-09-17 18:58:18 +05:30
dma-jz4740.c
dma-jz4780.c
dmaengine.c dmaengine: remove BUG_ON while registering devices 2017-08-28 09:39:46 +05:30
dmaengine.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
dmatest.c dmaengine: dmatest: move callback wait queue to thread context 2017-12-11 08:46:24 +05:30
edma.c dmaengine updates for 4.15-rc1 2017-11-14 16:49:31 -08:00
ep93xx_dma.c dmaengine: ep93xx: Don't drain the transfers in terminate_all() 2017-05-24 09:52:46 +05:30
fsl-edma.c
fsl_raid.c dmaengine: fsl_raid: make of_device_ids const. 2017-06-29 09:25:28 +05:30
fsl_raid.h
fsldma.c dmaengine: remove DMA_SG as it is dead code in kernel 2017-08-22 09:22:11 +05:30
fsldma.h dmaengine: fsldma: set BWC, DAHTS and SAHTS values correctly 2017-06-22 18:31:35 +05:30
idma64.c
idma64.h
img-mdc-dma.c dmaengine: img-mdc: Add runtime PM 2017-10-16 12:15:39 +05:30
imx-dma.c dmaengine: Convert timers to use timer_setup() 2017-10-24 20:11:21 +05:30
imx-sdma.c dmaengine: imx-sdma: Correct src_addr_widths and directions 2017-09-21 22:45:42 +05:30
iop-adma.c
k3dma.c dmaengine: k3dma: remove useless ON_WARN_ONCE() 2017-08-25 12:15:40 +05:30
Kconfig Merge branch 'topic/sprd' into for-linus 2017-11-14 10:36:09 +05:30
lpc18xx-dmamux.c
Makefile dmaengine updates for 4.15-rc1 2017-11-14 16:49:31 -08:00
mic_x100_dma.c
mic_x100_dma.h
mmp_pdma.c
mmp_tdma.c
moxart-dma.c
mpc512x_dma.c
mv_xor.c dmaengine: remove DMA_SG as it is dead code in kernel 2017-08-22 09:22:11 +05:30
mv_xor.h
mv_xor_v2.c dmaengine: mv_xor_v2: add support for suspend/resume 2017-05-14 18:24:46 +05:30
mxs-dma.c dmaengine: mxs: Use %zu for printing a size_t variable 2017-06-15 09:44:45 +05:30
nbpfaxi.c dmaengine: nbpfaxi: Use of_device_get_match_data() helper 2017-10-12 22:20:51 +05:30
of-dma.c dmaengine: Convert to using %pOF instead of full_name 2017-07-19 09:30:44 +05:30
omap-dma.c dmaengine: omap-dma: Implement protection for invalid max_burst 2017-10-12 22:13:48 +05:30
pch_dma.c dmaengine: pch_dma: Replace PCI pool old API 2017-10-31 17:01:06 +05:30
pl330.c dmaengine: pl330: fix descriptor allocation fail 2017-10-20 11:46:45 +05:30
pxa_dma.c
s3c24xx-dma.c
sa11x0-dma.c dmaengine: sa11x0: add DMA filters 2017-09-27 16:11:51 +05:30
sirf-dma.c
sprd-dma.c dmaengine: sprd: Add Spreadtrum DMA driver 2017-10-24 20:07:55 +05:30
st_fdma.c
st_fdma.h
ste_dma40.c Merge branch 'topic/dmatest' into for-linus 2017-09-06 21:55:10 +05:30
ste_dma40_ll.c
ste_dma40_ll.h
stm32-dma.c dmaengine: stm32-dma: fix up error dev_err message 2017-03-06 10:41:24 +05:30
stm32-dmamux.c dmaengine: stm32-dmamux: Fix a NULL vs IS_ERR() check in probe 2017-10-08 16:17:39 +05:30
stm32-mdma.c dmaengine: stm32_mdma: activate pack/unpack feature 2017-11-08 10:49:53 +05:30
sun4i-dma.c dmaengine: sun4i: fix invalid argument 2017-04-24 09:50:05 +05:30
sun6i-dma.c dmaengine: sun6i: Retrieve channel count/max request from devicetree 2017-10-23 11:44:03 +05:30
tegra20-apb-dma.c dmaengine: tegra-apb: Really fix runtime-pm usage 2017-06-30 11:13:44 +05:30
tegra210-adma.c dmaengine: tegra210-adma: fix of_irq_get() error check 2017-08-09 11:39:16 +05:30
ti-dma-crossbar.c dmaengine updates for 4.15-rc1 2017-11-14 16:49:31 -08:00
timb_dma.c
TODO
txx9dmac.c
txx9dmac.h
virt-dma.c dmaengine: virt-dma: Convert to use list_for_each_entry_safe() 2017-04-26 09:03:27 +05:30
virt-dma.h
xgene-dma.c dmaengine: xgene-dma: remove unused xgene_dma_invalidate_buffer 2017-08-22 22:13:44 +05:30
zx_dma.c dmaengine: zx: fix build warning 2017-01-25 15:33:45 +05:30