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drm/amdgpu: fix NULL pointer in amdgpu_reset_get_desc

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amdgpu_job_ring may return NULL, which causes kernel NULL
pointer error, using another way to print ring name instead
of ring->name.

Suggested-by: Lijo Lazar <Lijo.Lazar@amd.com>
Signed-off-by: Eric Huang <jinhuieric.huang@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Eric Huang 2024-06-06 11:37:20 -04:00 • committed by Alex Deucher
parent 6218bd6b22
commit 7bed1df814
1 changed files with 2 additions and 4 deletions
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6
drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c
View file

@ -164,16 +164,14 @@ void amdgpu_device_unlock_reset_domain(struct amdgpu_reset_domain *reset_domain)
void amdgpu_reset_get_desc(struct amdgpu_reset_context *rst_ctxt, char *buf,
size_t len)
{
struct amdgpu_ring *ring;
if (!buf || !len)
return;
switch (rst_ctxt->src) {
case AMDGPU_RESET_SRC_JOB:
if (rst_ctxt->job) {
ring = amdgpu_job_ring(rst_ctxt->job);
snprintf(buf, len, "job hang on ring:%s", ring->name);
snprintf(buf, len, "job hang on ring:%s",
rst_ctxt->job->base.sched->name);
} else {
strscpy(buf, "job hang", len);
}