linux-ext4 - Re: [syzbot] [ext4?] WARNING in bdev

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Message-ID: <68710315.a00a0220.26a83e.004a.GAE@google.com>
Date: Fri, 11 Jul 2025 05:27:01 -0700
From: syzbot <syzbot+01ef7a8da81a975e1ccd@...kaller.appspotmail.com>
To: adilger.kernel@...ger.ca, anna.luese@...ien.de, brauner@...nel.org, 
	jack@...e.cz, jfs-discussion@...ts.sourceforge.net, libaokun1@...wei.com, 
	linkinjeon@...nel.org, linux-ext4@...r.kernel.org, 
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, 
	p.raghav@...sung.com, shaggy@...nel.org, sj1557.seo@...sung.com, 
	syzkaller-bugs@...glegroups.com, tytso@....edu
Subject: Re: [syzbot] [ext4?] WARNING in bdev_getblk

syzbot has bisected this issue to:

commit 77eb64439ad52d8afb57bb4dae24a2743c68f50d
Author: Pankaj Raghav <p.raghav@...sung.com>
Date:   Thu Jun 26 11:32:23 2025 +0000

    fs/buffer: remove the min and max limit checks in __getblk_slow()

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=127d8d82580000
start commit:   835244aba90d Add linux-next specific files for 20250709
git tree:       linux-next
final oops:     https://syzkaller.appspot.com/x/report.txt?x=117d8d82580000
console output: https://syzkaller.appspot.com/x/log.txt?x=167d8d82580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=8396fd456733c122
dashboard link: https://syzkaller.appspot.com/bug?extid=01ef7a8da81a975e1ccd
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=115c40f0580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=11856a8c580000

Reported-by: syzbot+01ef7a8da81a975e1ccd@...kaller.appspotmail.com
Fixes: 77eb64439ad5 ("fs/buffer: remove the min and max limit checks in __getblk_slow()")

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