linux-kernel - Re: [syzbot] [bcachefs] KASAN: slab-out-of-bounds Read in poly1305_update

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Message-ID: <686415f3.a70a0220.3b7e22.1ec0.GAE@google.com>
Date: Tue, 01 Jul 2025 10:08:03 -0700
From: syzbot <syzbot+9375e47164f8e9588f17@...kaller.appspotmail.com>
To: bp@...en8.de, dave.hansen@...ux.intel.com, davem@...emloft.net, 
	herbert@...dor.apana.org.au, hpa@...or.com, kent.overstreet@...ux.dev, 
	linux-bcachefs@...r.kernel.org, linux-crypto@...r.kernel.org, 
	linux-kernel@...r.kernel.org, mingo@...hat.com, mmpgouride@...il.com, 
	syzkaller-bugs@...glegroups.com, tglx@...utronix.de, x86@...nel.org
Subject: Re: [syzbot] [bcachefs] KASAN: slab-out-of-bounds Read in poly1305_update_arch

syzbot suspects this issue was fixed by commit:

commit d89a34b14df5c205de698c23c3950b2b947cdb97
Author: Alan Huang <mmpgouride@...il.com>
Date:   Sat Jun 14 09:18:07 2025 +0000

    bcachefs: Move bset size check before csum check

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1460388c580000
start commit:   7367539ad4b0 Merge tag 'cxl-fixes-6.9-rc7' of git://git.ke..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=3714fc09f933e505
dashboard link: https://syzkaller.appspot.com/bug?extid=9375e47164f8e9588f17
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1196bc97180000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=11bc9a4c980000

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

#syz fix: bcachefs: Move bset size check before csum check

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