On Tue, Dec 28, 2021, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: ea586a076e8a Add linux-next specific files for 20211224 > git tree: linux-next > console output: https://syzkaller.appspot.com/x/log.txt?x=12418ea5b00000 > kernel config: https://syzkaller.appspot.com/x/.config?x=a9c4e3dde2c568fb > dashboard link: https://syzkaller.appspot.com/bug?extid=4e697fe80a31aa7efe21 > 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=15724985b00000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12d1aedbb00000 > > The issue was bisected to: > > commit e4b8954074f6d0db01c8c97d338a67f9389c042f > Author: Eric Dumazet <edumazet@xxxxxxxxxx> > Date: Tue Dec 7 01:30:37 2021 +0000 > > netlink: add net device refcount tracker to struct ethnl_req_info Heh, while I'd love to blame someone else, there's zero chance this is the offending commit. The WARN repros on kvm/queue, it's likely related to the KVM memslot changes queued for 5.17. I'll take a look.