diff options
| author | Samuel Pitoiset <samuel.pitoiset@gmail.com> | 2017-02-02 18:40:18 +0100 |
|---|---|---|
| committer | Emil Velikov <emil.l.velikov@gmail.com> | 2017-03-14 00:13:14 +0000 |
| commit | 346081e7ad244c51922480a04df711ebf473784f (patch) | |
| tree | e49fae0dd1d0ea23f7947a50bd72af9c8473ebbe /src | |
| parent | eca9916254b9525985f5e551459ffdde8b7bd0c8 (diff) | |
winsys/amdgpu: avoid potential segfault in amdgpu_bo_map()
cs can be NULL when it comes from r600_buffer_map_sync_with_rings()
to avoid doing the same checks. It was checked for write mappings
but not for read mappings.
Cc: "17.0" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
(cherry picked from commit af303abcdbeac3b90fb760de19bed56cc40cfff4)
Diffstat (limited to 'src')
| -rw-r--r-- | src/gallium/winsys/amdgpu/drm/amdgpu_bo.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/src/gallium/winsys/amdgpu/drm/amdgpu_bo.c b/src/gallium/winsys/amdgpu/drm/amdgpu_bo.c index e8d2c006f36..e7ea51978ee 100644 --- a/src/gallium/winsys/amdgpu/drm/amdgpu_bo.c +++ b/src/gallium/winsys/amdgpu/drm/amdgpu_bo.c @@ -253,14 +253,17 @@ static void *amdgpu_bo_map(struct pb_buffer *buf, * (neither one is changing it). * * Only check whether the buffer is being used for write. */ - if (cs && amdgpu_bo_is_referenced_by_cs_with_usage(cs, bo, - RADEON_USAGE_WRITE)) { - cs->flush_cs(cs->flush_data, 0, NULL); - } else { - /* Try to avoid busy-waiting in amdgpu_bo_wait. */ - if (p_atomic_read(&bo->num_active_ioctls)) - amdgpu_cs_sync_flush(rcs); + if (cs) { + if (amdgpu_bo_is_referenced_by_cs_with_usage(cs, bo, + RADEON_USAGE_WRITE)) { + cs->flush_cs(cs->flush_data, 0, NULL); + } else { + /* Try to avoid busy-waiting in amdgpu_bo_wait. */ + if (p_atomic_read(&bo->num_active_ioctls)) + amdgpu_cs_sync_flush(rcs); + } } + amdgpu_bo_wait((struct pb_buffer*)bo, PIPE_TIMEOUT_INFINITE, RADEON_USAGE_WRITE); } else { |