On 31/03/2022 02:48, syzbot wrote:

Hello,

syzbot found the following issue on:

HEAD commit:    d82a6c5ef9dc net: prestera: acl: make read-only array clie..
git tree:       net-next
console output: https://syzkaller.appspot.com/x/log.txt?x=13862081700000
kernel config:  https://syzkaller.appspot.com/x/.config?x=cce8a73d5200f3c0
dashboard link: https://syzkaller.appspot.com/bug?extid=03e3e228510223dabd34
compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=167da879700000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=12bb0fe1700000

dev.parent is not checked properly before dev_name() is called, I will provide a fix for this.