linux-kernel - Re: [syzbot] [media?] [usb?] possible deadlock in vb2_video_unregister

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Date: Sat, 08 Jun 2024 16:51:02 -0700
From: syzbot <syzbot+3b1d4b3d5f7a358bf9a9@...kaller.appspotmail.com>
To: benjamin.gaignard@...labora.com, hdanton@...a.com, 
	hverkuil-cisco@...all.nl, hverkuil@...all.nl, 
	laurent.pinchart@...asonboard.com, linux-kernel@...r.kernel.org, 
	linux-media@...r.kernel.org, linux-usb@...r.kernel.org, 
	m.szyprowski@...sung.com, mchehab@...nel.org, syzkaller-bugs@...glegroups.com, 
	tfiga@...omium.org
Subject: Re: [syzbot] [media?] [usb?] possible deadlock in vb2_video_unregister_device

syzbot suspects this issue was fixed by commit:

commit 65e6a2773d655172143cc0b927cdc89549842895
Author: Benjamin Gaignard <benjamin.gaignard@...labora.com>
Date:   Sat Mar 2 10:37:08 2024 +0000

    media: usbtv: Remove useless locks in usbtv_video_free()

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1009e6f6980000
start commit:   b401b621758e Linux 6.8-rc5
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=eff9f3183d0a20dd
dashboard link: https://syzkaller.appspot.com/bug?extid=3b1d4b3d5f7a358bf9a9
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=13ffaae8180000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=13ef909c180000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: media: usbtv: Remove useless locks in usbtv_video_free()

For information about bisection process see: https://goo.gl/tpsmEJ#bisection