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

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Message-ID: <678bf1fe.050a0220.303755.002c.GAE@google.com>
Date: Sat, 18 Jan 2025 10:25:02 -0800
From: syzbot <syzbot+2e93e6fb36e6fdc56574@...kaller.appspotmail.com>
To: airlied@...il.com, airlied@...ux.ie, dakr@...hat.com, 
	daniel.vetter@...ll.ch, daniel.vetter@...el.com, daniel@...ll.ch, 
	dri-devel@...ts.freedesktop.org, eadavis@...com, jani.nikula@...el.com, 
	jani.nikula@...ux.intel.com, kherbst@...hat.com, linux-kernel@...r.kernel.org, 
	lizhi.xu@...driver.com, lyude@...hat.com, maarten.lankhorst@...ux.intel.com, 
	mazinalhaddad05@...il.com, melissa.srw@...il.com, mripard@...nel.org, 
	nouveau@...ts.freedesktop.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_debug_printmodeline

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=11797a18580000
start commit:   ac347a0655db Merge tag 'arm64-fixes' of git://git.kernel.o..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=88e7ba51eecd9cd6
dashboard link: https://syzkaller.appspot.com/bug?extid=2e93e6fb36e6fdc56574
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=11252f97680000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=10fd2498e80000

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