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SubjectRE: BUG: sleeping function called from invalid context at net/core/sock.c:LINE (3)
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I don't understand this one. tipc_topsrv_stop() can only be trigged from a user doing rmmod(), and I double checked that this is running in user mode.
How does the call chain you are reporting occur?

///jon


> -----Original Message-----
> From: Kirill Tkhai [mailto:ktkhai@virtuozzo.com]
> Sent: Saturday, February 17, 2018 23:23
> To: Dmitry Vyukov <dvyukov@google.com>; syzbot
> <syzbot+749d9d87c294c00ca856@syzkaller.appspotmail.com>; Jon Maloy
> <jon.maloy@ericsson.com>; Ying Xue <ying.xue@windriver.com>
> Cc: Andrei Vagin <avagin@virtuozzo.com>; David Miller
> <davem@davemloft.net>; Eric W. Biederman <ebiederm@xmission.com>;
> Florian Westphal <fw@strlen.de>; LKML <linux-kernel@vger.kernel.org>;
> netdev <netdev@vger.kernel.org>; Nicolas Dichtel
> <nicolas.dichtel@6wind.com>; roman.kapl@sysgo.com; syzkaller-
> bugs@googlegroups.com; tipc-discussion@lists.sourceforge.net
> Subject: Re: BUG: sleeping function called from invalid context at
> net/core/sock.c:LINE (3)
>
> On 17.02.2018 11:15, Dmitry Vyukov wrote:
> > On Sat, Feb 17, 2018 at 4:00 AM, syzbot
> > <syzbot+749d9d87c294c00ca856@syzkaller.appspotmail.com> wrote:
> >> Hello,
> >>
> >> syzbot hit the following crash on net-next commit
> >> 65bd449c32c2745df61913ab54087e77f9d9b70d (Fri Feb 16 20:26:35 2018
> >> +0000) Merge branch 'tipc-de-generealize-topology-server'
> >
> > +tipc maintainers
>
> This looks to be caused by commit 0ef897be12b8
> "tipc: separate topology server listener socket from subcsriber sockets"
>
> Thanks,
> Kirill
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