From: Heiko Carstens <heiko.carstens@de.ibm.com>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@kernel.org>,
Martin Schwidefsky <schwidefsky@de.ibm.com>,
linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org,
Stefan Liebler <stli@linux.ibm.com>
Subject: Re: WARN_ON_ONCE(!new_owner) within wake_futex_pi() triggered
Date: Wed, 23 Jan 2019 10:24:43 +0100 [thread overview]
Message-ID: <20190123092443.GA3424@osiris> (raw)
In-Reply-To: <alpine.DEB.2.21.1901222212490.1628@nanos.tec.linutronix.de>
On Tue, Jan 22, 2019 at 10:14:00PM +0100, Thomas Gleixner wrote:
> On Mon, 21 Jan 2019, Thomas Gleixner wrote:
> > On Mon, 21 Jan 2019, Heiko Carstens wrote:
> >
> > > Hi Thomas,
> > >
> > > [full quote below]
> > >
> > > Did you have any time to look into this yet? :)
> > >
> > > The warning is still reproducible.
> >
> > Yeah, it's on my list of stuff which I need to take care of urgently. In
> > the next couple of days I hope...
>
> Hmm. Doesn't
>
> da791a667536 ("futex: Cure exit race")
>
> address that issue?
It doesn't look like it does. One occurrence was the one below when
using commit 7939f8beecf1 (which is post 5.0-rc2) for building the
kernel:
WARNING: CPU: 14 PID: 23505 at kernel/futex.c:1483 do_futex+0xa9a/0xc50
Kernel panic - not syncing: panic_on_warn set ...
CPU: 14 PID: 23505 Comm: ld.so.1 Not tainted 5.0.0-20190116.rc2.git0.7939f8beecf1.300.fc29.s390x+git #1
Hardware name: IBM 3906 M04 704 (LPAR)
Call Trace:
([<0000000000112e60>] show_stack+0x58/0x70)
[<0000000000a671fa>] dump_stack+0x7a/0xa8
[<0000000000143f52>] panic+0x11a/0x2d0
[<0000000000143db0>] __warn+0xf8/0x118
[<0000000000a662f8>] report_bug+0xd8/0x150
[<00000000001014ac>] do_report_trap+0xc4/0xe0
[<0000000000101680>] illegal_op+0x138/0x150
[<0000000000a87270>] pgm_check_handler+0x1c8/0x220
[<00000000001e9aea>] do_futex+0xa9a/0xc50
([<00000000001e9c4e>] do_futex+0xbfe/0xc50)
[<00000000001ea13c>] compat_sys_futex+0xe4/0x170
[<0000000000a86e84>] system_call+0xd8/0x2c8
next prev parent reply other threads:[~2019-01-23 9:24 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-27 8:11 WARN_ON_ONCE(!new_owner) within wake_futex_pi() triggered Heiko Carstens
2018-11-28 14:32 ` Thomas Gleixner
2018-11-29 11:23 ` Heiko Carstens
2019-01-21 12:21 ` Heiko Carstens
2019-01-21 13:12 ` Thomas Gleixner
2019-01-22 21:14 ` Thomas Gleixner
2019-01-23 9:24 ` Heiko Carstens [this message]
2019-01-23 12:33 ` Thomas Gleixner
2019-01-23 12:40 ` Heiko Carstens
2019-01-28 13:44 ` Peter Zijlstra
2019-01-28 13:58 ` Peter Zijlstra
2019-01-28 15:53 ` Thomas Gleixner
2019-01-29 8:49 ` Peter Zijlstra
2019-01-29 22:15 ` [PATCH] futex: Handle early deadlock return correctly Thomas Gleixner
2019-01-30 12:01 ` Thomas Gleixner
2019-02-08 12:05 ` [tip:locking/urgent] " tip-bot for Thomas Gleixner
2019-01-29 9:01 ` WARN_ON_ONCE(!new_owner) within wake_futex_pi() triggered Heiko Carstens
2019-01-29 9:33 ` Peter Zijlstra
2019-01-29 9:45 ` Thomas Gleixner
2019-01-29 10:24 ` Heiko Carstens
2019-01-29 10:35 ` Peter Zijlstra
2019-01-29 13:03 ` Thomas Gleixner
2019-01-29 13:23 ` Heiko Carstens
[not found] ` <20190129151058.GG26906@osiris>
2019-01-29 17:16 ` Sebastian Sewior
2019-01-29 21:45 ` Thomas Gleixner
[not found] ` <20190130094913.GC5299@osiris>
2019-01-30 12:15 ` Thomas Gleixner
[not found] ` <20190130125955.GD5299@osiris>
2019-01-30 13:24 ` Sebastian Sewior
2019-01-30 13:29 ` Thomas Gleixner
2019-01-30 14:33 ` Thomas Gleixner
2019-01-30 17:56 ` Thomas Gleixner
2019-01-30 21:07 ` Sebastian Sewior
2019-01-30 23:13 ` WARN_ON_ONCE(!new_owner) within wake_futex_pi() triggerede Thomas Gleixner
2019-01-30 23:35 ` Paul E. McKenney
2019-01-30 23:55 ` Thomas Gleixner
2019-01-31 0:27 ` Thomas Gleixner
2019-01-31 1:45 ` Paul E. McKenney
2019-01-31 16:52 ` Heiko Carstens
2019-01-31 17:06 ` Sebastian Sewior
2019-01-31 20:42 ` Heiko Carstens
2019-02-01 16:12 ` Heiko Carstens
2019-02-01 21:59 ` Thomas Gleixner
[not found] ` <20190202091043.GA3381@osiris>
2019-02-02 10:14 ` Thomas Gleixner
2019-02-02 11:20 ` Heiko Carstens
2019-02-03 16:30 ` Thomas Gleixner
2019-02-04 11:40 ` Heiko Carstens
2019-01-31 1:44 ` Paul E. McKenney
2019-01-30 13:25 ` WARN_ON_ONCE(!new_owner) within wake_futex_pi() triggered Thomas Gleixner
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