linux-kernel - Re: [syzbot] KASAN: vmalloc-out-of-bounds Write in imageblit (2)

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Date:   Thu, 20 Jan 2022 17:48:06 -0800
From:   syzbot <syzbot+14b0e8f3fd1612e35350@...kaller.appspotmail.com>
To:     bugs-a21@...nlit-rail.com, deller@....de,
        dri-devel@...ts.freedesktop.org, javierm@...hat.com,
        linux-fbdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        maxime@...no.tech, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] KASAN: vmalloc-out-of-bounds Write in imageblit (2)

syzbot has bisected this issue to:

commit 0499f419b76f94ede08304aad5851144813ac55c
Author: Javier Martinez Canillas <javierm@...hat.com>
Date:   Mon Jan 10 09:56:25 2022 +0000

    video: vga16fb: Only probe for EGA and VGA 16 color graphic cards

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=14c71e37b00000
start commit:   7fc5253f5a13 Add linux-next specific files for 20220120
git tree:       linux-next
final oops:     https://syzkaller.appspot.com/x/report.txt?x=16c71e37b00000
console output: https://syzkaller.appspot.com/x/log.txt?x=12c71e37b00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=94e8da4df9ab6319
dashboard link: https://syzkaller.appspot.com/bug?extid=14b0e8f3fd1612e35350
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=155dde3db00000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=125298e0700000

Reported-by: syzbot+14b0e8f3fd1612e35350@...kaller.appspotmail.com
Fixes: 0499f419b76f ("video: vga16fb: Only probe for EGA and VGA 16 color graphic cards")

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