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From: Ingo Molnar <mingo-X9Un+BFzKDI@public.gmane.org>
To: Jean Delvare <khali-PUYAD+kWke1g9hUCZPvPmw@public.gmane.org>
Cc: Ulrich Drepper <drepper-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
	john stultz <johnstul-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>,
	Greg KH <gregkh-l3A5Bk7waGM@public.gmane.org>,
	LKML <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	Linux I2C <i2c-GZX6beZjE8VD60Wz+7aTrA@public.gmane.org>
Subject: Re: [crash, bisected] I2C, kobject (ffff81003e8c4160): tried to	init an initialized object
Date: Thu, 17 Jul 2008 11:49:30 +0200	[thread overview]
Message-ID: <20080717094930.GA9044@elte.hu> (raw)
In-Reply-To: <20080717092655.GA6115-X9Un+BFzKDI@public.gmane.org>


* Ingo Molnar <mingo-X9Un+BFzKDI@public.gmane.org> wrote:

> -tip testing found another (similar) i2c crash with latest -git, on a 
> Core2Duo laptop:

found another bootup crash on an Athlon 64 X2 testsystem:

[   19.610000] bus: 'pci': add driver amd756_smbus
[   19.615204] initcall amd756_init+0x0/0x20 returned 0 after 9 msecs
[   19.620000] calling  amd756_s4882_init+0x0/0x2d7
[   19.624242] ------------[ cut here ]------------
[   19.628415] WARNING: at kernel/mutex.c:134 mutex_lock_nested+0xc0/0x267()
[   19.630000] Pid: 1, comm: swapper Not tainted 2.6.26-tip #20066
[   19.630000] 
[   19.630000] Call Trace:
[   19.630000]  [<ffffffff802358f5>] warn_on_slowpath+0x58/0x7f
[   19.630000]  [<ffffffff80263ac6>] ? ftrace_record_ip+0x20c/0x263
[   19.630000]  [<ffffffff80514faa>] ? _raw_spin_unlock+0x8e/0x93
[   19.630000]  [<ffffffff80507c44>] ? debug_locks_off+0x4/0x3c
[   19.630000]  [<ffffffff80263ac6>] ? ftrace_record_ip+0x20c/0x263
[   19.630000]  [<ffffffff8020b3a4>] ? mcount_call+0x5/0x31
[   19.630000]  [<ffffffff80861c19>] mutex_lock_nested+0xc0/0x267
[   19.630000]  [<ffffffff806e8ffd>] ? i2c_smbus_xfer+0x59/0x49c
[   19.630000]  [<ffffffff80cc8575>] ? amd756_s4882_init+0x0/0x2d7
[   19.630000]  [<ffffffff8020b3a4>] ? mcount_call+0x5/0x31
[   19.630000]  [<ffffffff806e8ffd>] i2c_smbus_xfer+0x59/0x49c
[   19.630000]  [<ffffffff80263ac6>] ? ftrace_record_ip+0x20c/0x263
[   19.630000]  [<ffffffff80514faa>] ? _raw_spin_unlock+0x8e/0x93
[   19.630000]  [<ffffffff80cc8584>] ? amd756_s4882_init+0xf/0x2d7
[   19.630000]  [<ffffffff80263ac6>] ? ftrace_record_ip+0x20c/0x263
[   19.630000]  [<ffffffff80cc8575>] ? amd756_s4882_init+0x0/0x2d7
[   19.630000]  [<ffffffff8020b3a4>] ? mcount_call+0x5/0x31
[   19.630000]  [<ffffffff80cc8575>] ? amd756_s4882_init+0x0/0x2d7
[   19.630000]  [<ffffffff80cc85b6>] amd756_s4882_init+0x41/0x2d7
[   19.630000]  [<ffffffff8024e325>] ? getnstimeofday+0x3f/0xa1
[   19.630000]  [<ffffffff8024bf25>] ? ktime_get_ts+0x4e/0x53
[   19.630000]  [<ffffffff80cc8575>] ? amd756_s4882_init+0x0/0x2d7
[   19.630000]  [<ffffffff80ca49a0>] kernel_init+0x143/0x2a4
[   19.630000]  [<ffffffff80863721>] ? _spin_unlock_irq+0x2b/0x37
[   19.630000]  [<ffffffff8020c9f9>] child_rip+0xa/0x11
[   19.630000]  [<ffffffff80ca485d>] ? kernel_init+0x0/0x2a4
[   19.630000]  [<ffffffff8020c9ef>] ? child_rip+0x0/0x11
[   19.630000] 
[   19.630000] ---[ end trace 0e79313125261797 ]---
[   19.630000] BUG: unable to handle kernel NULL pointer dereference at 0000000000000000
[   19.630000] IP: [<ffffffff80861c66>] mutex_lock_nested+0x10d/0x267

with this config:

  http://redhat.com/~mingo/misc/config-Thu_Jul_17_11_34_08_CEST_2008.bad

i already had I2C_NFORCE2_S4985 off here, so it's a different one.

	Ingo

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WARNING: multiple messages have this Message-ID (diff)
From: Ingo Molnar <mingo@elte.hu>
To: Jean Delvare <khali@linux-fr.org>
Cc: john stultz <johnstul@us.ibm.com>, Greg KH <gregkh@suse.de>,
	LKML <linux-kernel@vger.kernel.org>,
	Linux I2C <i2c@lm-sensors.org>,
	Ulrich Drepper <drepper@redhat.com>
Subject: Re: [crash, bisected] I2C,  kobject (ffff81003e8c4160): tried to init an initialized object
Date: Thu, 17 Jul 2008 11:49:30 +0200	[thread overview]
Message-ID: <20080717094930.GA9044@elte.hu> (raw)
In-Reply-To: <20080717092655.GA6115@elte.hu>


* Ingo Molnar <mingo@elte.hu> wrote:

> -tip testing found another (similar) i2c crash with latest -git, on a 
> Core2Duo laptop:

found another bootup crash on an Athlon 64 X2 testsystem:

[   19.610000] bus: 'pci': add driver amd756_smbus
[   19.615204] initcall amd756_init+0x0/0x20 returned 0 after 9 msecs
[   19.620000] calling  amd756_s4882_init+0x0/0x2d7
[   19.624242] ------------[ cut here ]------------
[   19.628415] WARNING: at kernel/mutex.c:134 mutex_lock_nested+0xc0/0x267()
[   19.630000] Pid: 1, comm: swapper Not tainted 2.6.26-tip #20066
[   19.630000] 
[   19.630000] Call Trace:
[   19.630000]  [<ffffffff802358f5>] warn_on_slowpath+0x58/0x7f
[   19.630000]  [<ffffffff80263ac6>] ? ftrace_record_ip+0x20c/0x263
[   19.630000]  [<ffffffff80514faa>] ? _raw_spin_unlock+0x8e/0x93
[   19.630000]  [<ffffffff80507c44>] ? debug_locks_off+0x4/0x3c
[   19.630000]  [<ffffffff80263ac6>] ? ftrace_record_ip+0x20c/0x263
[   19.630000]  [<ffffffff8020b3a4>] ? mcount_call+0x5/0x31
[   19.630000]  [<ffffffff80861c19>] mutex_lock_nested+0xc0/0x267
[   19.630000]  [<ffffffff806e8ffd>] ? i2c_smbus_xfer+0x59/0x49c
[   19.630000]  [<ffffffff80cc8575>] ? amd756_s4882_init+0x0/0x2d7
[   19.630000]  [<ffffffff8020b3a4>] ? mcount_call+0x5/0x31
[   19.630000]  [<ffffffff806e8ffd>] i2c_smbus_xfer+0x59/0x49c
[   19.630000]  [<ffffffff80263ac6>] ? ftrace_record_ip+0x20c/0x263
[   19.630000]  [<ffffffff80514faa>] ? _raw_spin_unlock+0x8e/0x93
[   19.630000]  [<ffffffff80cc8584>] ? amd756_s4882_init+0xf/0x2d7
[   19.630000]  [<ffffffff80263ac6>] ? ftrace_record_ip+0x20c/0x263
[   19.630000]  [<ffffffff80cc8575>] ? amd756_s4882_init+0x0/0x2d7
[   19.630000]  [<ffffffff8020b3a4>] ? mcount_call+0x5/0x31
[   19.630000]  [<ffffffff80cc8575>] ? amd756_s4882_init+0x0/0x2d7
[   19.630000]  [<ffffffff80cc85b6>] amd756_s4882_init+0x41/0x2d7
[   19.630000]  [<ffffffff8024e325>] ? getnstimeofday+0x3f/0xa1
[   19.630000]  [<ffffffff8024bf25>] ? ktime_get_ts+0x4e/0x53
[   19.630000]  [<ffffffff80cc8575>] ? amd756_s4882_init+0x0/0x2d7
[   19.630000]  [<ffffffff80ca49a0>] kernel_init+0x143/0x2a4
[   19.630000]  [<ffffffff80863721>] ? _spin_unlock_irq+0x2b/0x37
[   19.630000]  [<ffffffff8020c9f9>] child_rip+0xa/0x11
[   19.630000]  [<ffffffff80ca485d>] ? kernel_init+0x0/0x2a4
[   19.630000]  [<ffffffff8020c9ef>] ? child_rip+0x0/0x11
[   19.630000] 
[   19.630000] ---[ end trace 0e79313125261797 ]---
[   19.630000] BUG: unable to handle kernel NULL pointer dereference at 0000000000000000
[   19.630000] IP: [<ffffffff80861c66>] mutex_lock_nested+0x10d/0x267

with this config:

  http://redhat.com/~mingo/misc/config-Thu_Jul_17_11_34_08_CEST_2008.bad

i already had I2C_NFORCE2_S4985 off here, so it's a different one.

	Ingo

  parent reply	other threads:[~2008-07-17  9:49 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-07-14 20:49 [GIT PULL] i2c updates for 2.6.27, round 1 Jean Delvare
2008-07-14 20:49 ` Jean Delvare
2008-07-16  8:23 ` [crash, bisected] I2C, kobject (ffff81003e8c4160): tried to init an initialized object (was: Re: [GIT PULL] i2c updates for 2.6.27, round 1) Ingo Molnar
2008-07-16  9:07   ` Jean Delvare
2008-07-16  9:07     ` Jean Delvare
2008-07-16 10:08     ` [crash, bisected] I2C, kobject (ffff81003e8c4160): tried to init an initialized object Jean Delvare
2008-07-16 12:18       ` Jean Delvare
2008-07-17  9:26         ` Ingo Molnar
2008-07-17  9:33           ` Ingo Molnar
2008-07-17  9:48             ` Alexey Dobriyan
     [not found]               ` <20080717094858.GA18687-QDJVlCTZ4KWTKS93B3g+7KFoa47nwP16@public.gmane.org>
2008-07-17  9:59                 ` Ingo Molnar
2008-07-17  9:59                   ` Ingo Molnar
2008-08-06 20:21               ` Jean Delvare
2008-08-06 20:21                 ` Jean Delvare
     [not found]           ` <20080717092655.GA6115-X9Un+BFzKDI@public.gmane.org>
2008-07-17  9:49             ` Ingo Molnar [this message]
2008-07-17  9:49               ` Ingo Molnar
2008-07-17  9:54               ` Ingo Molnar
2008-07-17 22:42     ` [crash, bisected] I2C, kobject (ffff81003e8c4160): tried to init an initialized object (was: Re: [GIT PULL] i2c updates for 2.6.27, round 1) Greg KH

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