CVE-2026-89812
2026-09-16
11h16 +00:00
11h16 +00:00
Thông báo cho một CVE
Luôn được thông báo về mọi thay đổi đối với một CVE cụ thể.
Mô tả CVE
In the Linux kernel, the following vulnerability has been resolved:
drm/amdgpu: force complete the MES ring fences on reset
The MES scheduler ring has no drm scheduler (no_scheduler = true), so it is
skipped by the force-completion loop in amdgpu_device_pre_asic_reset(). It uses
a polling fence whose hw value lives in wb (GTT) memory and survives a MODE1
reset, while fence_drv.sync_seq keeps advancing for every packet.
When the reset is triggered because MES itself stopped responding, the
timed-out packets advance sync_seq past the last hw fence value MES wrote.
After resume the first MES submission polls forever on a seq that is never
written back, failing the resume and wedging the box on a second reset:
amdgpu: MES ring buffer is full.
amdgpu: *ERROR* ring gfx_0.0.0 test failed (-110)
amdgpu: resume of IP block failed -110
amdgpu: GPU reset end with ret = -110
Force complete the MES scheduler ring fences together with the scheduler rings
so their hw fence is realigned to sync_seq.
v2: cover all XCCs (one scheduler ring each), not just mes.ring[0].
