Re: [PATCH] nbd: don't warn when reclassifying a busy socket lock

[Hillf Danton]

On Tue, 30 Jun 2026 00:19:45 -0700 Eric Dumazet wrote:
> On Sun, Jun 28, 2026 at 10:29 PM Hillf Danton <hdanton@xxxxxxxx> wrote:
> > For archive purpose, syzbot report [1] where udp was not invovled defies
> > what is fixed in d532cddb6c60 ("nbd: Reclassify sockets to avoid lockdep
> > circular dependency") -- "Since the UDP socket and the NBD TCP/TLS socket
> > are different, this is a false positive."
> >
> >
> > [1] Subject: [syzbot] [net?] possible deadlock in inet_shutdown (3)
> > https://lore.kernel.org/lkml/69c37e6a.a70a0220.234938.0045.GAE@xxxxxxxxxx/
> 
> Why don't you send a patch if you think one is needed?
>
Good question. It is a long standing tough issue, frankly more difficult than
I could cure it in one shoot at the cost of a couple weeks, particularly given
the rule of thumb -- delivering half baked croissants, HBC, as few as possible.