linux-kernel - Re: [syzbot] [gfs2?] UBSAN: shift-out-of-bounds in gfs2_dir

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Message-ID: <6877cd37.a00a0220.105e77.0002.GAE@google.com>
Date: Wed, 16 Jul 2025 09:03:03 -0700
From: syzbot <syzbot+4708579bb230a0582a57@...kaller.appspotmail.com>
To: agruenba@...hat.com, anprice@...hat.com, gfs2@...ts.linux.dev, 
	linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [gfs2?] UBSAN: shift-out-of-bounds in gfs2_dir_read (2)

Hello,

syzbot has tested the proposed patch and the reproducer did not trigger any issue:

Reported-by: syzbot+4708579bb230a0582a57@...kaller.appspotmail.com
Tested-by: syzbot+4708579bb230a0582a57@...kaller.appspotmail.com

Tested on:

commit:         557c024c gfs2: Validate i_depth for exhash directories
git tree:       git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2.git for-next
console output: https://syzkaller.appspot.com/x/log.txt?x=1125458c580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=b29b1a0d7330d4a8
dashboard link: https://syzkaller.appspot.com/bug?extid=4708579bb230a0582a57
compiler:       Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7

Note: no patches were applied.
Note: testing is done by a robot and is best-effort only.