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| author | Lucas De Marchi <lucas.demarchi@intel.com> | 2025-11-18 11:08:11 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-12-07 06:27:39 +0900 |
| commit | 1966838d1c82149cbf4a652322d26a6e5aae9c4e (patch) | |
| tree | 6f08db53331fb874d2d6cc7ed5ce0bec172c1891 /drivers/gpu | |
| parent | e19d1d97d7f775af81b3514a6a50a614209ba6a9 (diff) | |
| download | linux-1966838d1c82149cbf4a652322d26a6e5aae9c4e.tar.gz linux-1966838d1c82149cbf4a652322d26a6e5aae9c4e.tar.bz2 linux-1966838d1c82149cbf4a652322d26a6e5aae9c4e.zip | |
drm/xe/guc: Fix stack_depot usage
commit 0e234632e39bd21dd28ffc9ba3ae8eec4deb949c upstream.
Add missing stack_depot_init() call when CONFIG_DRM_XE_DEBUG_GUC is
enabled to fix the following call stack:
[] BUG: kernel NULL pointer dereference, address: 0000000000000000
[] Workqueue: drm_sched_run_job_work [gpu_sched]
[] RIP: 0010:stack_depot_save_flags+0x172/0x870
[] Call Trace:
[] <TASK>
[] fast_req_track+0x58/0xb0 [xe]
Fixes: 16b7e65d299d ("drm/xe/guc: Track FAST_REQ H2Gs to report where errors came from")
Tested-by: Sagar Ghuge <sagar.ghuge@intel.com>
Cc: stable@vger.kernel.org # v6.17+
Reviewed-by: Stuart Summers <stuart.summers@intel.com>
Link: https://patch.msgid.link/20251118-fix-debug-guc-v1-1-9f780c6bedf8@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
(cherry picked from commit 64fdf496a6929a0a194387d2bb5efaf5da2b542f)
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/xe/xe_guc_ct.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/xe_guc_ct.c b/drivers/gpu/drm/xe/xe_guc_ct.c index 75ac0c424476..d0c7ab6396a9 100644 --- a/drivers/gpu/drm/xe/xe_guc_ct.c +++ b/drivers/gpu/drm/xe/xe_guc_ct.c @@ -237,6 +237,9 @@ int xe_guc_ct_init_noalloc(struct xe_guc_ct *ct) #if IS_ENABLED(CONFIG_DRM_XE_DEBUG) spin_lock_init(&ct->dead.lock); INIT_WORK(&ct->dead.worker, ct_dead_worker_func); +#if IS_ENABLED(CONFIG_DRM_XE_DEBUG_GUC) + stack_depot_init(); +#endif #endif init_waitqueue_head(&ct->wq); init_waitqueue_head(&ct->g2h_fence_wq); |