From: Thomas Gleixner <tglx@linutronix.de>
To: Stefan Priebe - Profihost AG <s.priebe@profihost.ag>
Cc: linux-netdev@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: Asterisk deadlocks since Kernel 4.1
Date: Tue, 17 Nov 2015 20:15:06 +0100 (CET) [thread overview]
Message-ID: <alpine.DEB.2.11.1511171936030.3761@nanos> (raw)
In-Reply-To: <564B3D35.50004@profihost.ag>
On Tue, 17 Nov 2015, Stefan Priebe - Profihost AG wrote:
> since Upgrading our Asterisk System from Kernel 3.18.17 to 4.1.13 it
> deadlocks every few hours (kill -9 is the only thing working). Booting
> with 3.18 again let it run smooth again.
>
> An strace shows asterisk is looping like this:
>
> [pid 6068] timerfd_gettime(8, , {it_interval={0, 20000000},
> it_value={0, 140592906050976}}) = 0
> [pid 6068] read(8, "\1\0\0\0\0\0\0\0", 8) = 8
> [pid 6068] poll([{fd=9, events=POLLIN}, {fd=8, events=POLLIN|POLLPRI}],
> 2, 1000) = 1 ([{fd=8, revents=POLLIN}])
> [pid 6068] timerfd_gettime(8, , {it_interval={0, 20000000},
> it_value={0, 140592906050976}}) = 0
> [pid 6068] read(8, "\1\0\0\0\0\0\0\0", 8) = 8
>
> fd 8 is:
>
> lrwx------ 1 root root 64 Nov 17 15:27 /proc/6025/fd/8 ->
> anon_inode:[timerfd]
>
>
> # cat /proc/6025/stack
> [<ffffffff941d60e9>] poll_schedule_timeout+0x49/0x70
> [<ffffffff941d76c7>] do_sys_poll+0x3d7/0x590
> [<ffffffff941d78bc>] do_restart_poll+0x3c/0x70
> [<ffffffff9408e7ff>] sys_restart_syscall+0x1f/0x30
> [<ffffffff9463f1ee>] system_call_fastpath+0x12/0x71
> [<ffffffffffffffff>] 0xffffffffffffffff
>
> Any ideas how to debug this?
fd 8 is probably not really interesting. That looks like a interval
timer firing periodically. So it probably waits for fd 9 ...
Thanks,
tglx
next prev parent reply other threads:[~2015-11-17 19:15 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-17 14:44 Asterisk deadlocks since Kernel 4.1 Stefan Priebe - Profihost AG
2015-11-17 19:15 ` Thomas Gleixner [this message]
2015-11-17 19:27 ` Stefan Priebe
2015-11-17 19:43 ` Thomas Gleixner
2015-11-18 20:23 ` Stefan Priebe
2015-11-18 21:00 ` Hannes Frederic Sowa
2015-11-18 21:20 ` Stefan Priebe
2015-11-18 21:22 ` Hannes Frederic Sowa
2015-11-19 9:35 ` Stefan Priebe - Profihost AG
2015-11-18 21:18 ` Florian Weimer
2015-11-18 21:23 ` Stefan Priebe
2015-11-19 9:39 ` Florian Weimer
2015-11-18 21:36 ` Stefan Priebe
2015-11-18 21:40 ` Hannes Frederic Sowa
2015-11-18 21:42 ` Stefan Priebe
2015-11-18 21:58 ` Hannes Frederic Sowa
2015-11-19 9:44 ` Florian Weimer
2015-11-19 9:49 ` Stefan Priebe - Profihost AG
2015-11-19 9:56 ` Stefan Priebe - Profihost AG
2015-11-19 11:41 ` Hannes Frederic Sowa
2015-11-19 11:43 ` Stefan Priebe - Profihost AG
2015-11-19 12:41 ` Hannes Frederic Sowa
2015-11-19 12:46 ` Stefan Priebe - Profihost AG
2015-11-19 13:19 ` Florian Weimer
2015-11-19 19:51 ` Stefan Priebe
2015-11-23 12:44 ` Stefan Priebe - Profihost AG
2015-11-23 12:57 ` Hannes Frederic Sowa
2015-11-24 13:35 ` Stefan Priebe - Profihost AG
2015-12-02 9:45 ` Stefan Priebe - Profihost AG
2015-12-02 11:40 ` Hannes Frederic Sowa
2015-12-02 17:51 ` Philipp Hahn
2015-12-03 8:23 ` Stefan Priebe - Profihost AG
2015-12-04 18:26 ` Stefan Priebe
2015-12-05 1:08 ` Herbert Xu
2015-12-06 20:56 ` Stefan Priebe
2015-12-07 1:20 ` Herbert Xu
2015-12-07 6:58 ` Stefan Priebe - Profihost AG
2015-12-08 6:13 ` netlink: Add missing goto statement to netlink_insert Herbert Xu
2015-12-08 16:21 ` David Miller
2015-12-09 3:29 ` Greg KH
2015-12-07 7:41 ` Asterisk deadlocks since Kernel 4.1 Philipp Hahn
2015-12-05 14:19 ` Philipp Matthias Hahn
2015-12-05 15:34 ` Stefan Priebe
2015-12-02 17:15 ` Philipp Hahn
2015-12-02 18:23 ` Hannes Frederic Sowa
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