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

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Message-ID: <20240515164927.GT4449@twin.jikos.cz>
Date: Wed, 15 May 2024 18:49:27 +0200
From: David Sterba <dsterba@...e.cz>
To: syzbot <syzbot+623a623cfed57f422be1@...kaller.appspotmail.com>
Cc: clm@...com, dsterba@...e.com, josef@...icpanda.com,
	linux-btrfs@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [btrfs?] WARNING in btrfs_get_root_ref

On Thu, Feb 22, 2024 at 06:03:22PM -0800, syzbot wrote:
> Hello,
> 
> syzbot found the following issue on:
> 
> HEAD commit:    c02197fc9076 Merge tag 'powerpc-6.8-3' of git://git.kernel..
> git tree:       upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=16765b8a180000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=caa42dd2796e3ac1
> dashboard link: https://syzkaller.appspot.com/bug?extid=623a623cfed57f422be1
> compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
> 
> Unfortunately, I don't have any reproducer for this issue yet.
> 
> Downloadable assets:
> disk image: https://storage.googleapis.com/syzbot-assets/7b2a3f729cc3/disk-c02197fc.raw.xz
> vmlinux: https://storage.googleapis.com/syzbot-assets/b4f10e6eb1ca/vmlinux-c02197fc.xz
> kernel image: https://storage.googleapis.com/syzbot-assets/8488781d739e/bzImage-c02197fc.xz
> 
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+623a623cfed57f422be1@...kaller.appspotmail.com

#syz fix: btrfs: fix double free of anonymous device after snapshot creation failure