linux-kernel - Re: [syzbot] [nilfs?] [btrfs?] WARNING in filemap_unaccount

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Date: Tue, 2 Jul 2024 19:00:21 +0200
From: David Sterba <dsterba@...e.cz>
To: syzbot <syzbot+026119922c20a8915631@...kaller.appspotmail.com>
Cc: brauner@...nel.org, clm@...com, dsterba@...e.com, jack@...e.cz,
	josef@...icpanda.com, konishi.ryusuke@...il.com,
	linux-btrfs@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-nilfs@...r.kernel.org,
	syzkaller-bugs@...glegroups.com, viro@...iv.linux.org.uk
Subject: Re: [syzbot] [nilfs?] [btrfs?] WARNING in filemap_unaccount_folio

On Tue, May 21, 2024 at 07:55:32PM -0700, syzbot wrote:
> Hello,
> 
> syzbot found the following issue on:
> 
> HEAD commit:    b6394d6f7159 Merge tag 'pull-misc' of git://git.kernel.org..
> git tree:       upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=142a7cb2980000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=713476114e57eef3
> dashboard link: https://syzkaller.appspot.com/bug?extid=026119922c20a8915631
> compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=14d43f84980000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=11d4fadc980000
> 
> Downloadable assets:
> disk image: https://storage.googleapis.com/syzbot-assets/e8e1377d4772/disk-b6394d6f.raw.xz
> vmlinux: https://storage.googleapis.com/syzbot-assets/19fbbb3b6dd5/vmlinux-b6394d6f.xz
> kernel image: https://storage.googleapis.com/syzbot-assets/4dcce16af95d/bzImage-b6394d6f.xz
> mounted in repro #1: https://storage.googleapis.com/syzbot-assets/e197bb1019a1/mount_0.gz
> mounted in repro #2: https://storage.googleapis.com/syzbot-assets/1c62d475ecf4/mount_2.gz
> 
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+026119922c20a8915631@...kaller.appspotmail.com

#syz set subsystems: nilfs