From 90254ac084a6465e46cdada933bf3a7e9ee90277 Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Thu, 8 Aug 2013 15:41:33 +0200 Subject: drm: fix locking in gem debugfs/procfs file The idr is protected with our spinlock, if we don't hold that nothing prevents the gem objects from disappearing from under us. Signed-off-by: Daniel Vetter Signed-off-by: Dave Airlie --- drivers/gpu/drm/drm_info.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'drivers/gpu/drm/drm_info.c') diff --git a/drivers/gpu/drm/drm_info.c b/drivers/gpu/drm/drm_info.c index d4b20ceda3fb..9f8fc4c328c9 100644 --- a/drivers/gpu/drm/drm_info.c +++ b/drivers/gpu/drm/drm_info.c @@ -218,7 +218,11 @@ int drm_gem_name_info(struct seq_file *m, void *data) struct drm_device *dev = node->minor->dev; seq_printf(m, " name size handles refcount\n"); + + spin_lock(&dev->object_name_lock); idr_for_each(&dev->object_name_idr, drm_gem_one_name_info, m); + spin_unlock(&dev->object_name_lock); + return 0; } -- cgit v1.2.3