linux-kernel - Re: [syzbot] [dri?] WARNING in drm_prime_destroy_file

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Date: Thu, 28 Dec 2023 19:56:25 +0800
From: Hillf Danton <hdanton@...a.com>
To: syzbot <syzbot+59dcc2e7283a6f5f5ba1@...kaller.appspotmail.com>
Cc: linux-kernel@...r.kernel.org,
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [dri?] WARNING in drm_prime_destroy_file_private (2)

On Wed, 27 Dec 2023 12:51:18 -0800
> HEAD commit:    5254c0cbc92d Merge tag 'block-6.7-2023-12-22' of git://git..
> git tree:       upstream
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=155d5fd6e80000

#syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git  master

--- x/drivers/gpu/drm/drm_file.c
+++ y/drivers/gpu/drm/drm_file.c
@@ -287,6 +287,7 @@ void drm_file_free(struct drm_file *file
 	if (dev->driver->postclose)
 		dev->driver->postclose(dev, file);
 
+	drm_gem_release(dev, file);
 	drm_prime_destroy_file_private(&file->prime);
 
 	WARN_ON(!list_empty(&file->event_list));
--