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

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Date: Wed, 07 Feb 2024 10:17:05 -0800
From: syzbot <syzbot+93bd128a383695391534@...kaller.appspotmail.com>
To: airlied@...il.com, airlied@...ux.ie, daniel.vetter@...ll.ch, 
	daniel.vetter@...el.com, daniel@...ll.ch, dri-devel@...ts.freedesktop.org, 
	hamohammed.sa@...il.com, linux-kernel@...r.kernel.org, 
	maarten.lankhorst@...ux.intel.com, mairacanal@...eup.net, 
	melissa.srw@...il.com, mripard@...nel.org, rodrigosiqueiramelo@...il.com, 
	syzkaller-bugs@...glegroups.com, tzimmermann@...e.de
Subject: Re: [syzbot] [dri?] WARNING in vkms_get_vblank_timestamp (2)

syzbot has bisected this issue to:

commit ea40d7857d5250e5400f38c69ef9e17321e9c4a2
Author: Daniel Vetter <daniel.vetter@...ll.ch>
Date:   Fri Oct 9 23:21:56 2020 +0000

    drm/vkms: fbdev emulation support

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1282dbffe80000
start commit:   6764c317b6bb Merge tag 'scsi-fixes' of git://git.kernel.or..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=1182dbffe80000
console output: https://syzkaller.appspot.com/x/log.txt?x=1682dbffe80000
kernel config:  https://syzkaller.appspot.com/x/.config?x=2c0ac5dfae6ecc58
dashboard link: https://syzkaller.appspot.com/bug?extid=93bd128a383695391534
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=12067e60180000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=102774b7e80000

Reported-by: syzbot+93bd128a383695391534@...kaller.appspotmail.com
Fixes: ea40d7857d52 ("drm/vkms: fbdev emulation support")

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