From: Vitaly Prosyak
The current implementation of drm_sched_start uses a hardcoded -ECANCELED to
dispose of a job when
the parent/hw fence is NULL. This results in drm_sched_job_done being called
with -ECANCELED for
each job with a NULL parent in the pending list, making it difficult to
disti
From: Vitaly Prosyak
The current implementation of drm_sched_start uses a hardcoded -ECANCELED to
dispose of a job when
the parent/hw fence is NULL. This results in drm_sched_job_done being called
with -ECANCELED for
each job with a NULL parent in the pending list, making it difficult to
disti
From: Vitaly Prosyak
The current implementation of drm_sched_start uses a hardcoded -ECANCELED to
dispose of a job when
the parent/hw fence is NULL. This results in drm_sched_job_done being called
with -ECANCELED for
each job with a NULL parent in the pending list, making it difficult to
disti
From: Vitaly Prosyak
[ +0.006038] BUG: kernel NULL pointer dereference, address: 0028
[ +0.006969] #PF: supervisor read access in kernel mode
[ +0.005139] #PF: error_code(0x) - not-present page
[ +0.005139] PGD 0 P4D 0
[ +0.002530] Oops: [#1] PREEMPT SMP NOPTI
[ +0.0043
From: Vitaly Prosyak
The bug can be triggered by sending an amdgpu_cs_wait_ioctl
to the AMDGPU DRM driver on any ASICs with valid context.
The bug was reported by Joonkyo Jung .
For example the following code:
static void Syzkaller2(int fd)
{
union drm_amdgpu_ctx arg1;
un
From: Vitaly Prosyak
The bug can be triggered by sending an amdgpu_cs_wait_ioctl
to the AMDGPU DRM driver on any ASICs with valid context.
The bug was reported by Joonkyo Jung .
For example the following code:
static void Syzkaller2(int fd)
{
union drm_amdgpu_ctx arg1;
un
From: Vitaly Prosyak
The bug can be triggered by sending an amdgpu_cs_wait_ioctl
to the AMDGPU DRM driver on any ASICs with valid context.
The bug was reported by Joonkyo Jung .
For example the following code:
static void Syzkaller2(int fd)
{
union drm_amdgpu_ctx arg1;
un
From: Vitaly Prosyak
During an IGT GPU reset test we see again oops despite of
commit 0c8c901aaaebc9 (drm/sched: Check scheduler ready before calling
timeout handling).
It uses ready condition whether to call drm_sched_fault which unwind
the TDR leads to GPU reset.
However it looks the ready con
From: Vitaly Prosyak
During an IGT GPU reset test we see again oops despite of
commit 0c8c901aaaebc9 (drm/sched: Check scheduler ready before calling
timeout handling).
It uses ready condition whether to call drm_sched_fault which unwind
the TDR leads to GPU reset.
However it looks the ready con
