Re: kernel BUG at lib/string.c:LINE! (5)

[David Sterba]

On Tue, Sep 15, 2020 at 04:00:21AM -0700, syzbot wrote:
> Hello,
> 
> syzbot found the following issue on:
> 
> HEAD commit:    e4c26faa Merge tag 'usb-5.9-rc5' of git://git.kernel.org/p..
> git tree:       upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=13b17bed900000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=c61610091f4ca8c4
> dashboard link: https://syzkaller.appspot.com/bug?extid=e864a35d361e1d4e29a5
> compiler:       gcc (GCC) 10.1.0-syz 20200507
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=177582be900000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=13deb2b5900000
> 
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+e864a35d361e1d4e29a5@xxxxxxxxxxxxxxxxxxxxxxxxx

#syz fix: btrfs: fix overflow when copying corrupt csums for a message