As the worker may exit by itself, we need to hold a task reference to it in the parent.
References: https://bugs.freedesktop.org/show_bug.cgi?id=108735 Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk> --- drivers/gpu/drm/i915/selftests/intel_hangcheck.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/i915/selftests/intel_hangcheck.c b/drivers/gpu/drm/i915/selftests/intel_hangcheck.c index 51d0e2bed9e1..defe671130ab 100644 --- a/drivers/gpu/drm/i915/selftests/intel_hangcheck.c +++ b/drivers/gpu/drm/i915/selftests/intel_hangcheck.c @@ -1150,6 +1150,7 @@ static int __igt_reset_evict_vma(struct drm_i915_private *i915, tsk = NULL; goto out_reset; } + get_task_struct(tsk); wait_for_completion(&arg.completion); @@ -1172,6 +1173,8 @@ static int __igt_reset_evict_vma(struct drm_i915_private *i915, /* The reset, even indirectly, should take less than 10ms. */ igt_wedge_on_timeout(&w, i915, HZ / 10 /* 100ms timeout*/) err = kthread_stop(tsk); + + put_task_struct(tsk); } mutex_lock(&i915->drm.struct_mutex); -- 2.19.1 _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx
