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From: Ingo Molnar <mingo@kernel.org>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Jens Axboe <axboe@kernel.dk>,
	Alexander Viro <viro@ftp.linux.org.uk>,
	"Theodore Ts'o" <tytso@mit.edu>, "H. Peter Anvin" <hpa@zytor.com>
Subject: Re: [-rc7 regression] Block IO/VFS/ext3/timer spinlock lockup?
Date: Thu, 14 Feb 2013 15:54:24 +0100	[thread overview]
Message-ID: <20130214145424.GA26071@gmail.com> (raw)
In-Reply-To: <20130214144510.GC25282@gmail.com>


> CPU0 appears to be idle:
> 
> [  118.510000] Call Trace:
> [  118.510000]  [<7900844b>] cpu_idle+0x86/0xb4
> [  118.510000]  [<792a91df>] rest_init+0x103/0x108
> [  118.510000]  [<794558cc>] start_kernel+0x2c7/0x2cc


So, I've done a partial bisection, the breakage appears to have 
gone upstream between v3.8-rc3 and v3.8-rc4.

This roughly coincides with the time frame when I first saw 
these lockups pop up, so in that sense it's a plausible result - 
but there weren't all that many commits in -rc4 and none looks 
really suspicious, so this might be one of those non-bisectable 
bugs.

( Later today I'll try to finish the bisection just in case it
  results in something useful. )

Thanks,

	Ingo

  reply	other threads:[~2013-02-14 14:54 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-02-08 21:51 Linux v3.8-rc7 Linus Torvalds
2013-02-10  0:14 ` [REGRESSION] -rc7/-rc4+: unable to USB boot - enumeration partially broken (was: Linux v3.8-rc7) Andreas Mohr
2013-02-10 14:05   ` Andreas Mohr
2013-02-12 16:07     ` Andreas Mohr
2013-02-12 16:16       ` Greg KH
2013-02-12 21:25         ` Andreas Mohr
2013-02-13  6:44         ` [REGRESSION] [nailed] USB boot failure: USB: EHCI: make ehci-pci a separate driver Andreas Mohr
2013-02-13  7:16           ` Andreas Mohr
2013-02-13  7:44             ` Andreas Mohr
2013-02-13  7:44               ` Andreas Mohr
2013-02-13 10:05               ` Andreas Mohr
2013-02-13 10:05                 ` Andreas Mohr
2013-02-13 10:50                 ` Colin Guthrie
2013-02-13 10:50                   ` Colin Guthrie
2013-02-13 16:13                   ` Andreas Mohr
2013-02-13 16:26                     ` Colin Guthrie
2013-02-13 16:26                       ` Colin Guthrie
2013-02-13 11:10 ` [-rc7 regression] Block IO/VFS/ext3/timer spinlock lockup? Ingo Molnar
2013-02-13 16:59   ` Linus Torvalds
2013-02-13 23:20     ` Thomas Gleixner
2013-02-14 14:45       ` Ingo Molnar
2013-02-14 14:54         ` Ingo Molnar [this message]
2013-02-14 15:08           ` Ingo Molnar
2013-02-14 17:28             ` Thomas Gleixner
2013-02-14 18:22             ` Yinghai Lu
2013-02-15 11:44               ` [-rc7 regression] Buggy commit: "mm: use aligned zone start for pfn_to_bitidx calculation" Ingo Molnar
2013-02-15 22:06                 ` Greg KH
2013-02-16  8:29                   ` Ingo Molnar
2013-03-01 16:50                     ` Greg KH
2013-03-01 17:07                       ` Linus Torvalds
2013-03-01 17:14                         ` Greg KH
2013-02-16  8:25                 ` Ingo Molnar
2013-02-16 18:26                 ` Linus Torvalds
2013-02-16 19:38                   ` Yinghai Lu
2013-02-16 19:51                     ` Linus Torvalds
2013-02-18  8:49                   ` Ingo Molnar
2013-02-18 14:46                   ` Mel Gorman
2013-02-18 18:42                     ` Laura Abbott
2013-02-14 23:05   ` [-rc7 regression] Block IO/VFS/ext3/timer spinlock lockup? Linus Torvalds
2013-02-15 11:39     ` [PATCH] spinlock/debugging: Print out lock name when available Ingo Molnar

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