From: Hannes Frederic Sowa <hannes@stressinduktion.org>
To: Dmitry Vyukov <dvyukov@google.com>, Al Viro <viro@zeniv.linux.org.uk>
Cc: Eric Dumazet <eric.dumazet@gmail.com>,
linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
netdev <netdev@vger.kernel.org>,
David Miller <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Kostya Serebryany <kcc@google.com>,
Alexander Potapenko <glider@google.com>,
Sasha Levin <sasha.levin@oracle.com>,
syzkaller <syzkaller@googlegroups.com>,
Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Subject: Re: Deadlock between bind and splice
Date: Mon, 23 Nov 2015 10:21:27 +0100 [thread overview]
Message-ID: <1448270487.3976105.447364665.43219C16@webmail.messagingengine.com> (raw)
In-Reply-To: <CACT4Y+bS2w3VUgb3MYe3epx7qbiu7VSNhW2CbXwwRSzmsSH2cw@mail.gmail.com>
On Mon, Nov 23, 2015, at 09:32, Dmitry Vyukov wrote:
> On Tue, Nov 10, 2015 at 3:59 AM, Al Viro <viro@zeniv.linux.org.uk> wrote:
> > On Tue, Nov 10, 2015 at 02:38:54AM +0000, Al Viro wrote:
> >> On Fri, Nov 06, 2015 at 07:42:15AM -0800, Eric Dumazet wrote:
> >>
> >> > Thank you for this report.
> >> >
> >> > pipe is part of fs, not net ;)
> >>
> >> AF_UNIX bind() vs. socketpair() interplay, OTOH...
> >
> > FWIW, BSD folks unlock the socket for the duration of mknod - mark it as
> > "somebody's trying to bind it" to avoid the fun with racing double bind(),
> > but that's about it. Tempting, to be honest...
> >
> > BTW, why does unix_autobind() do allocation under ->readlock? The allocation
> > will be normally used - that if (u->addr) return; part is just dealing with
> > an unlikely race, as far as I can see...
>
>
> Hello,
>
> This is still happening periodically for me. Is there a proposed fix?
> I could test it.
No, we currently have no fix for that report. :/
prev parent reply other threads:[~2015-11-23 9:21 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CACT4Y+brDX=C15jSs33zGaCBt2BDPPzBcgqtKA2dYMdviYjKww@mail.gmail.com>
2015-11-06 15:42 ` Eric Dumazet
2015-11-10 2:38 ` Al Viro
2015-11-10 2:59 ` Al Viro
2015-11-23 8:32 ` Dmitry Vyukov
2015-11-23 9:21 ` Hannes Frederic Sowa [this message]
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