[syzbot] [erofs?] general protection fault in erofs_bread (2)

[syzbot]

Hello,

syzbot has tested the proposed patch and the reproducer did not trigger any issue:

Reported-and-tested-by: syzbot+bbb353775d51424087f2 at syzkaller.appspotmail.com

Tested on:

commit:         ae0bac79 erofs: avoid pcpubuf.c inclusion if CONFIG_ER..
git tree:       git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git fixes
console output: https://syzkaller.appspot.com/x/log.txt?x=16793226280000
kernel config:  https://syzkaller.appspot.com/x/.config?x=6beb6ffe4f59ef2a
dashboard link: https://syzkaller.appspot.com/bug?extid=bbb353775d51424087f2
compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2

Note: no patches were applied.
Note: testing is done by a robot and is best-effort only.