From: Hillf Danton <hdanton@sina.com>
To: syzbot <syzbot+9948f8e188482c5d1a3e@syzkaller.appspotmail.com>
Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [media?] possible deadlock in v4l2_ctrl_handler_log_status
Date: Fri, 9 Feb 2024 16:11:27 +0800 [thread overview]
Message-ID: <20240209081128.112-1-hdanton@sina.com> (raw)
In-Reply-To: <000000000000ce2dde0610db47a8@google.com>
On Thu, 08 Feb 2024 01:17:28 -0800
> HEAD commit: b1d3a0e70c38 Add linux-next specific files for 20240208
> git tree: linux-next
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1746f9b7e80000
#syz test https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
--- x/drivers/media/v4l2-core/v4l2-ctrls-core.c
+++ y/drivers/media/v4l2-core/v4l2-ctrls-core.c
@@ -2550,7 +2550,7 @@ void v4l2_ctrl_handler_log_status(struct
colon = ": ";
mutex_lock(hdl->lock);
list_for_each_entry(ref, &hdl->ctrl_refs, node) {
- if (ref->from_other_dev ||
+ if (ref->from_other_dev || ref->ctrl->handler != hdl ||
(ref->ctrl->flags & V4L2_CTRL_FLAG_DISABLED))
continue;
log_ctrl(hdl, ref->ctrl, prefix, colon);
--
next prev parent reply other threads:[~2024-02-09 8:12 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-08 9:17 [syzbot] [media?] possible deadlock in v4l2_ctrl_handler_log_status syzbot
2024-02-09 8:11 ` Hillf Danton [this message]
2024-02-09 8:34 ` syzbot
2024-02-09 13:58 ` syzbot
2024-07-24 12:57 ` syzbot
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