Leak a task reference in i915_ppgtt_info(), add put_task_struct() to fix it.
Signed-off-by: Geliang Tang <geliangt...@163.com> --- drivers/gpu/drm/i915/i915_debugfs.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index 5615d3d..8797717 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -2288,9 +2288,13 @@ static int i915_ppgtt_info(struct seq_file *m, void *data) list_for_each_entry_reverse(file, &dev->filelist, lhead) { struct drm_i915_file_private *file_priv = file->driver_priv; + struct task_struct *task; - seq_printf(m, "\nproc: %s\n", - get_pid_task(file->pid, PIDTYPE_PID)->comm); + task = get_pid_task(file->pid, PIDTYPE_PID); + if (!task) + return -ESRCH; + seq_printf(m, "\nproc: %s\n", task->comm); + put_task_struct(task); idr_for_each(&file_priv->context_idr, per_file_ctx, (void *)(unsigned long)m); } -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/