netdev - Re: [syzbot ci] Re: net: update netdev_lock

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Message-ID: <CANn89i+Z3ELnxMJdRqsUy-afppMot7Otezu3BiheH+wtOvgscg@mail.gmail.com>
Date: Thu, 8 Jan 2026 10:22:55 +0100
From: Eric Dumazet <edumazet@...gle.com>
To: syzbot ci <syzbot+ci131adae482253910@...kaller.appspotmail.com>
Cc: davem@...emloft.net, eric.dumazet@...il.com, horms@...nel.org, 
	kuba@...nel.org, netdev@...r.kernel.org, pabeni@...hat.com, 
	syzbot@...ts.linux.dev, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot ci] Re: net: update netdev_lock_{type,name}

On Thu, Jan 8, 2026 at 7:37 AM syzbot ci
<syzbot+ci131adae482253910@...kaller.appspotmail.com> wrote:
>
> syzbot ci has tested the following series
>
> [v2] net: update netdev_lock_{type,name}
> https://lore.kernel.org/all/20260107125423.4031241-1-edumazet@google.com
> * [PATCH v2 net] net: update netdev_lock_{type,name}
>
> and found the following issue:
> WARNING in register_netdevice
>
> Full report is available here:
> https://ci.syzbot.org/series/07a2abd3-8dbc-43d0-a5d9-cdbb1a35d769
>
> ***
>
> WARNING in register_netdevice
>
> tree:      net
> URL:       https://kernel.googlesource.com/pub/scm/linux/kernel/git/netdev/net.git
> base:      1806d210e5a8f431ad4711766ae4a333d407d972
> arch:      amd64
> compiler:  Debian clang version 21.1.8 (++20251202083448+f68f64eb8130-1~exp1~20251202083504.46), Debian LLD 21.1.8
> config:    https://ci.syzbot.org/builds/f4fb7576-ea1f-485d-9ef1-c3270f1560d9/config
> C repro:   https://ci.syzbot.org/findings/e4767ea9-6be5-4bce-9523-40ab12d29b67/c_repro
> syz repro: https://ci.syzbot.org/findings/e4767ea9-6be5-4bce-9523-40ab12d29b67/syz_repro
>
> ------------[ cut here ]------------
> netdev_lock_pos() could not find dev_type=805

OK, 805 is ARPHRD_IEEE802154_MONITOR, I am adding it to V3