Description
In the Linux kernel, the following vulnerability has been resolved: drm/panthor: Recover from panthor_gpu_flush_caches() failures We have seen a few cases where the whole memory subsystem is blocked and flush operations never complete. When that happens, we want to: - schedule a reset, so we can recover from this situation - in the reset path, we need to reset the pending_reqs so we can send new commands after the reset - if more panthor_gpu_flush_caches() operations are queued after the timeout, we skip them and return -EIO directly to avoid needless waits (the memory block won't miraculously work again) Note that we drop the WARN_ON()s because these hangs can be triggered with buggy GPU jobs created by the UMD, and there's no way we can prevent it. We do keep the error messages though. v2: - New patch v3: - Collect R-b - Explicitly mention the fact we dropped the WARN_ON()s in the commit message v4: - No changes
Product status
5cd894e258c4b0b92b9b475309cea244e590d194 (git) before 8ec4f1b14a6147db07d6e51aa1d6bcc799649847
5cd894e258c4b0b92b9b475309cea244e590d194 (git) before 57753f2c64c033a21a7400b3a2192db1cd6c890e
5cd894e258c4b0b92b9b475309cea244e590d194 (git) before 2c899c6026fc9d39286735b30c4d8550d4ea075b
5cd894e258c4b0b92b9b475309cea244e590d194 (git) before 3c0a60195b37af83bbbaf223cd3a78945bace49e
6.10
Any version before 6.10
6.12.75 (semver)
6.18.14 (semver)
6.19.4 (semver)
7.0 (original_commit_for_fix)
References
git.kernel.org/...c/8ec4f1b14a6147db07d6e51aa1d6bcc799649847
git.kernel.org/...c/57753f2c64c033a21a7400b3a2192db1cd6c890e
git.kernel.org/...c/2c899c6026fc9d39286735b30c4d8550d4ea075b
git.kernel.org/...c/3c0a60195b37af83bbbaf223cd3a78945bace49e