Re: [syzbot] [net?] KASAN: null-ptr-deref Read in netlink_has_listeners

[Fernando Fernandez Mancera]

On 10/26/26 7:43 PM, syzbot wrote:
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit:    c03c1a14507d Linux 7.3
> git tree:       git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
> console output: https://syzkaller.appspot.com/x/log.txt?x=13a01ae1580000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=4ccb65e03706547e
> dashboard link: https://syzkaller.appspot.com/bug?extid=1269fe6cc2016008124e
> compiler:       Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=11515031580000
>
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+1269fe6cc2016008124e@xxxxxxxxxxxxxxxxxxxxxxxxx

This has been fixed by:

6b3e73774815 ("devlink: fix reload error on netns teardown")

I have verified it with the reproducer provided.

Thanks,
Fernando.