linux-kernel - Re: [syzbot] [dri?] divide error in drm_mode_convert_to

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Message-ID: <6779f0c5.050a0220.380ff0.0008.GAE@google.com>
Date: Sat, 04 Jan 2025 18:39:01 -0800
From: syzbot <syzbot+0d7a3627fb6a42cf0863@...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, 
	eadavis@...com, jani.nikula@...el.com, linux-kernel@...r.kernel.org, 
	maarten.lankhorst@...ux.intel.com, melissa.srw@...il.com, mripard@...nel.org, 
	simona@...ll.ch, syzkaller-bugs@...glegroups.com, tzimmermann@...e.de, 
	ville.syrjala@...ux.intel.com
Subject: Re: [syzbot] [dri?] divide error in drm_mode_convert_to_umode

syzbot suspects this issue was fixed by commit:

commit 9398332f23fab10c5ec57c168b44e72997d6318e
Author: Ville Syrjälä <ville.syrjala@...ux.intel.com>
Date:   Fri Nov 29 04:26:28 2024 +0000

    drm/modes: Avoid divide by zero harder in drm_mode_vrefresh()

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1296f8b0580000
start commit:   1c892cdd8fe0 Merge tag 'vfs-6.8-rc6.fixes' of git://git.ke..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=eff9f3183d0a20dd
dashboard link: https://syzkaller.appspot.com/bug?extid=0d7a3627fb6a42cf0863
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=17f2fbc2180000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=177bda8a180000

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

#syz fix: drm/modes: Avoid divide by zero harder in drm_mode_vrefresh()

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