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| author |   Christian König <christian.koenig@amd.com> | 2026-04-17 15:52:45 +0200 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2026-04-24 11:09:49 -0400 |
| commit | 0ef196a208385b7d7da79f411c161b04e97283e2 (patch) | |
| tree | 600d77ae2221a5c52b65f21003fb5787c3018f2c /rust/kernel/num/ssh:/git@git.zx2c4.com | |
| parent | drm/amd/pm: fix missing fine-grained dpm table flag on aldebaran (diff) | |
drm/amdgpu: fix AMDGPU_INFO_READ_MMR_REG
There were multiple issues in that code.
First of all the order between the reset semaphore and the mm_lock was
wrong (e.g. copy_to_user) was called while holding the lock.
Then we allocated memory while holding the reset semaphore which is also
a pretty big bug and can deadlock.
Then we used down_read_trylock() instead of waiting for the reset to
finish.
Signed-off-by: Christian König <christian.koenig@amd.com>
Fixes: 9e823f307074 ("drm/amdgpu: Block MMR_READ IOCTL in reset")
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 361b6e6b303d4b691f6c5974d3eaab67ca6dd90e)
Diffstat (limited to 'rust/kernel/num/ssh:/git@git.zx2c4.com')
0 files changed, 0 insertions, 0 deletions