Description
In the Linux kernel, the following vulnerability has been resolved: drm/radeon: delete radeon_fence_process in is_signaled, no deadlock Delete the attempt to progress the queue when checking if fence is signaled. This avoids deadlock. dma-fence_ops::signaled can be called with the fence lock in unknown state. For radeon, the fence lock is also the wait queue lock. This can cause a self deadlock when signaled() tries to make forward progress on the wait queue. But advancing the queue is unneeded because incorrectly returning false from signaled() is perfectly acceptable. (cherry picked from commit 527ba26e50ec2ca2be9c7c82f3ad42998a75d0db)
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
954605ca3f897ad617123279eb3404a404cce5ab to < d40a72d7e3bad4dfb311ef078f5a57362f088c7faffected954605ca3f897ad617123279eb3404a404cce5ab to < 9d0ed508a9e2af82951ce7d834f58c139fc2bd9baffected954605ca3f897ad617123279eb3404a404cce5ab to < 73bc12d6a547f9571ce4393acfd73c004e2df9e5affected954605ca3f897ad617123279eb3404a404cce5ab to < 7e3e9b3a44c23c8eac86a41308c05077d6d30f41affected954605ca3f897ad617123279eb3404a404cce5ab to < 9eb00b5f5697bd56baa3222c7a1426fa15bacfb5affected
Linux Linux
Default version status: affected
3.18affected0 to < 3.18unaffected6.1.162 to ≤ 6.1.*unaffected6.6.123 to ≤ 6.6.*unaffected6.12.60 to ≤ 6.12.*unaffected6.17.10 to ≤ 6.17.*unaffected6.18 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/d40a72d7e3bad4dfb311ef078f5a57362f088c7f ↗
- https://git.kernel.org/stable/c/9d0ed508a9e2af82951ce7d834f58c139fc2bd9b ↗
- https://git.kernel.org/stable/c/73bc12d6a547f9571ce4393acfd73c004e2df9e5 ↗
- https://git.kernel.org/stable/c/7e3e9b3a44c23c8eac86a41308c05077d6d30f41 ↗
- https://git.kernel.org/stable/c/9eb00b5f5697bd56baa3222c7a1426fa15bacfb5 ↗