Re: [syzbot] [mm?] [ext4?] WARNING in ext4_init_orphan_info

[Jan Kara]

On Mon 08-09-25 12:52:03, syzbot wrote:
> syzbot has bisected this issue to:
> 
> commit 02f310fcf47fa9311d6ba2946a8d19e7d7d11f37
> Author: Jan Kara <jack@xxxxxxx>
> Date:   Mon Aug 16 09:57:06 2021 +0000
> 
>     ext4: Speedup ext4 orphan inode handling
> 
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=16645562580000
> start commit:   76eeb9b8de98 Linux 6.17-rc5
> git tree:       upstream
> final oops:     https://syzkaller.appspot.com/x/report.txt?x=15645562580000
> console output: https://syzkaller.appspot.com/x/log.txt?x=11645562580000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=429771c55b615e85
> dashboard link: https://syzkaller.appspot.com/bug?extid=0b92850d68d9b12934f5
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=168d2562580000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=15869562580000
> 
> Reported-by: syzbot+0b92850d68d9b12934f5@xxxxxxxxxxxxxxxxxxxxxxxxx
> Fixes: 02f310fcf47f ("ext4: Speedup ext4 orphan inode handling")
> 
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection

Hum, yes, we don't verify orphan file size is sane. I'll send a fix.

								Honza

-- 
Jan Kara <jack@xxxxxxxx>
SUSE Labs, CR