From: Hillf Danton <hdanton@sina.com>
To: syzbot <syzbot+3910ee87c4ba0a51e3f9@syzkaller.appspotmail.com>
Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [media?] KASAN: use-after-free Read in media_request_release
Date: Thu, 20 Aug 2026 10:33:23 +0800 [thread overview]
Message-ID: <20260820023332.1317-1-hdanton@sina.com> (raw)
In-Reply-To: <6a841dc9.4d75e56a.c9a88.000e.GAE@google.com>
> Date: Tue, 18 Aug 2026 01:54:33 -0700
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit: 0f23d56f17fd Merge tag 'linux_kselftest-next-7.3-rc1' of g..
> git tree: upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=14185a25580000
> kernel config: https://syzkaller.appspot.com/x/.config?x=65bfb7732ae5a736
> dashboard link: https://syzkaller.appspot.com/bug?extid=3910ee87c4ba0a51e3f9
> compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12185a25580000
#syz test
--- x/drivers/media/mc/mc-device.c
+++ y/drivers/media/mc/mc-device.c
@@ -728,6 +728,8 @@ void media_device_cleanup(struct media_d
media_graph_walk_cleanup(&mdev->pm_count_walk);
mutex_destroy(&mdev->graph_mutex);
mutex_destroy(&mdev->req_queue_mutex);
+ while (atomic_read(&mdev->num_requests))
+ schedule_timeout_idle(HZ/20);
}
EXPORT_SYMBOL_GPL(media_device_cleanup);
--
next prev parent reply other threads:[~2026-08-20 2:36 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-18 8:54 [syzbot] [media?] KASAN: use-after-free Read in media_request_release syzbot
2026-08-20 2:33 ` Hillf Danton [this message]
2026-08-20 2:51 ` syzbot
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