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Boris Brezillon 70cc77952e drm/panfrost: Fix a race in panfrost_ioctl_madvise() 
If 2 threads change the MADVISE property of the same BO in parallel we
might end up with an shmem->madv value that's inconsistent with the
presence of the BO in the shrinker list.

The easiest solution to fix that is to protect the
drm_gem_shmem_madvise() call with the shrinker lock.

Fixes: 013b651013 ("drm/panfrost: Add madvise and shrinker support")
Cc: <stable@vger.kernel.org>
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Acked-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191129135908.2439529-3-boris.brezillon@collabora.com
2019-12-06 11:05:52 -06:00
..
drm drm/panfrost: Fix a race in panfrost_ioctl_madvise() 2019-12-06 11:05:52 -06:00
host1x gpu: host1x: Unconditionally select IOMMU_IOVA 2019-11-01 10:49:17 +01:00
ipu-v3 gpu: ipu-v3: image-convert: only sample into the next tile if necessary 2019-08-19 16:25:30 +02:00
vga
Makefile