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| author | Viktor Slavkovic <[email protected]> | 2018-01-08 18:43:03 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <[email protected]> | 2018-01-09 14:32:11 +0000 |
| commit | 443064cb0b1fb4569fe0a71209da7625129fb760 (patch) | |
| tree | 677f623bbda77dd2fddb27de05169668d250e0cd /drivers/gpu/drm/amd/amdgpu/amdgpu_ucode.c | |
| parent | Linux 4.15-rc6 (diff) | |
| download | kernel-443064cb0b1fb4569fe0a71209da7625129fb760.tar.gz kernel-443064cb0b1fb4569fe0a71209da7625129fb760.zip | |
staging: android: ashmem: fix a race condition in ASHMEM_SET_SIZE ioctl
A lock-unlock is missing in ASHMEM_SET_SIZE ioctl which can result in a
race condition when mmap is called. After the !asma->file check, before
setting asma->size, asma->file can be set in mmap. That would result in
having different asma->size than the mapped memory size. Combined with
ASHMEM_UNPIN ioctl and shrinker invocation, this can result in memory
corruption.
Signed-off-by: Viktor Slavkovic <[email protected]>
Cc: [email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_ucode.c')
0 files changed, 0 insertions, 0 deletions