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drm/xe: Fix NULL ptr dereference in devcoredump

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Kernel VM do not have an Xe file. Include a check for Xe file in the VM
before trying to get pid from VM's Xe file when taking a devcoredump.

Fixes: b10d0c5e9df7 ("drm/xe: Add process name to devcoredump")
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: José Roberto de Souza <jose.souza@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240530203341.1795181-1-matthew.brost@intel.com
This commit is contained in:
Matthew Brost 2024-05-30 13:33:41 -07:00
parent c063cce7df
commit f2bf9e9598
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/xe/xe_devcoredump.c
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@ -176,7 +176,7 @@ static void devcoredump_snapshot(struct xe_devcoredump *coredump,
ss->snapshot_time = ktime_get_real();
ss->boot_time = ktime_get_boottime();
if (q->vm) {
if (q->vm && q->vm->xef) {
task = get_pid_task(q->vm->xef->drm->pid, PIDTYPE_PID);
if (task)
process_name = task->comm;