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From: Ingo Molnar <mingo@kernel.org>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Dave Jones <davej@redhat.com>, Hugh Dickins <hughd@google.com>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Paul McKenney <paul.mckenney@linaro.org>
Subject: Re: Debugging Thinkpad T430s occasional suspend failure.
Date: Fri, 15 Feb 2013 16:50:28 +0100	[thread overview]
Message-ID: <20130215155028.GC3324@gmail.com> (raw)
In-Reply-To: <CA+55aFyVE0jyu9uw659ERw5E2DdOhwkQp3gk=gcXP0xrmMh9qA@mail.gmail.com>


* Linus Torvalds <torvalds@linux-foundation.org> wrote:

> Paul? Apparently you end up with a dead machine at least 
> during resume and no oops. Which isn't very helpful. Maybe 
> there is possibly some BUG_ON() in the RCU code somewhere?

AFAICS there's no BUG_ON() or panic() in the RCU code, outside 
early init code allocation failure paths where we genuinely 
can't continue.

( Unless it _is_ one of those BUG_ON()s triggering during early 
  resume, reconstructing kernel threads, or the BUG_ON() comes 
  in indirectly via some other way ... )

Dave, one thing that might be worth trying is to disable 
CONFIG_BUG and see whether the system manages to limp through to 
get console output?

Thanks,

	Ingo

  reply	other threads:[~2013-02-15 15:50 UTC|newest]

Thread overview: 50+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-02-12 19:39 Debugging Thinkpad T430s occasional suspend failure Dave Jones
2013-02-12 20:13 ` Linus Torvalds
2013-02-13  0:26 ` Hugh Dickins
2013-02-13  0:40   ` Dave Jones
2013-02-13  0:56     ` Hugh Dickins
2013-02-13  4:16       ` Dave Jones
2013-02-13  5:37         ` Hugh Dickins
2013-02-13 19:34           ` Dave Jones
2013-02-13 19:56             ` Linus Torvalds
2013-02-13 20:53               ` Dave Jones
2013-02-16 20:54                 ` Paul E. McKenney
2013-02-15  1:15               ` Dave Jones
2013-02-15  2:09                 ` Linus Torvalds
2013-02-15 15:50                   ` Ingo Molnar [this message]
2013-02-15 22:33                     ` Dave Jones
2013-02-15 17:44                   ` Paul E. McKenney
2013-02-15 18:34                     ` Linus Torvalds
2013-02-15 18:35                       ` Linus Torvalds
2013-02-15 18:50                         ` Linus Torvalds
2013-02-16 19:25                           ` Paul E. McKenney
2013-02-16 19:46                             ` Linus Torvalds
2013-02-16 21:07                               ` Paul E. McKenney
2013-02-16 21:53                               ` H. Peter Anvin
2013-02-17 22:49                               ` H. Peter Anvin
2013-02-18  8:41                                 ` Ingo Molnar
2013-02-19  8:50                                   ` Paul E. McKenney
2013-02-19  8:56                                     ` Ingo Molnar
2013-02-17 15:11                       ` Frederic Weisbecker
2013-02-17 17:32                         ` Linus Torvalds
2013-02-17 18:17                           ` Frederic Weisbecker
2013-02-17 20:58                           ` Frederic Weisbecker
2013-02-17 21:02                             ` Frederic Weisbecker
2013-02-18 15:53                               ` Frederic Weisbecker
2013-02-18 18:12                                 ` Linus Torvalds
2013-02-19 10:08                                   ` Frederic Weisbecker
2013-02-18 19:58                                 ` Thomas Gleixner
2013-02-19 10:38                                   ` Frederic Weisbecker
2013-02-19 10:44                                     ` Thomas Gleixner
2013-02-15  2:09                 ` Hugh Dickins
2013-02-15  2:15                   ` Linus Torvalds
2013-02-16 21:45                     ` Hugh Dickins
2013-02-16 23:02                       ` Linus Torvalds
2013-02-17  0:01                         ` Hugh Dickins
2013-02-17  2:21                           ` Hugh Dickins
2013-02-17 13:38                             ` Daniel Vetter
2013-02-17 14:54                               ` Daniel Vetter
2013-02-17 16:31                               ` Hugh Dickins
2013-02-17 17:28                                 ` Daniel Vetter
2013-02-17 17:28                                   ` Daniel Vetter
2013-02-13  2:17   ` Dave Jones

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