From: John Kacur <jkacur@gmail.com>
To: Thomas Gleixner <tglx@linutronix.de>,
RT <linux-rt-users@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>
Cc: John Kacur <jkacur@redhat.com>, Clark Williams <williams@redhat.com>
Subject: Re: 2.6.31-rc6-rt3 oops
Date: Tue, 18 Aug 2009 11:18:36 +0200 [thread overview]
Message-ID: <520f0cf10908180218p9daa4benba7363c8dc32400b@mail.gmail.com> (raw)
In-Reply-To: <520f0cf10908171651i4ed50800n76a2c11a2cce2914@mail.gmail.com>
On Tue, Aug 18, 2009 at 1:51 AM, John Kacur<jkacur@gmail.com> wrote:
> INFO: task irq/19-ehci_hcd:611 blocked for more than 120 seconds.
> "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> irq/19-ehci_h D ffff88002bfd1880 6832 611 2 0x00000000
> BUG: using smp_processor_id() in preemptible [00000000] code: khungtaskd/343
> caller is show_stack_log_lvl+0x37/0x12e
> Pid: 343, comm: khungtaskd Not tainted 2.6.31-rc6-rt3 #1
> Call Trace:
> [<ffffffff811fe1b6>] debug_smp_processor_id+0xda/0x108
> [<ffffffff8100efbd>] show_stack_log_lvl+0x37/0x12e
> [<ffffffff813df08c>] ? printk+0x4b/0x67
> [<ffffffff810101ae>] show_stack+0x2a/0x40
> [<ffffffff810496eb>] sched_show_task+0xd3/0xef
> [<ffffffff810b6c66>] watchdog+0x1a7/0x21b
> [<ffffffff81041c49>] ? need_resched+0x31/0x4f
> [<ffffffff810b6abf>] ? watchdog+0x0/0x21b
> [<ffffffff810728ee>] kthread+0xad/0xb5
> [<ffffffff8104a1b3>] ? finish_task_switch+0xab/0x15e
> [<ffffffff8100d15a>] child_rip+0xa/0x20
> [<ffffffff8100cac0>] ? restore_args+0x0/0x30
> [<ffffffff81072841>] ? kthread+0x0/0xb5
> [<ffffffff8100d150>] ? child_rip+0x0/0x20
> ffff880138999df0 0000000000000082 0000000030fa3107 0000000030fa3107
> ffff880138999d80 ffffffff813e28d8 ffff880138f517c0 ffff880138db8200
> ffff880138f51b58 0000000000000246 ffff880138999db0 ffffffff813e10c3
> Call Trace:
> [<ffffffff813e28d8>] ? _atomic_spin_unlock_irqrestore+0x5f/0x91
> [<ffffffff813e10c3>] ? rt_spin_lock_slowunlock+0x58/0x9c
> [<ffffffff813e1ed6>] ? rt_spin_unlock+0x57/0x72
> [<ffffffff810b7ade>] ? irq_thread+0x0/0x1d5
> [<ffffffff813e01dc>] schedule+0x22/0x47
> [<ffffffff810728da>] kthread+0x99/0xb5
> [<ffffffff8104a1b3>] ? finish_task_switch+0xab/0x15e
> [<ffffffff8100d15a>] child_rip+0xa/0x20
> [<ffffffff8100cac0>] ? restore_args+0x0/0x30
> [<ffffffff813e1149>] ? rt_spin_lock_slowlock+0x42/0x29e
> [<ffffffff81072841>] ? kthread+0x0/0xb5
> [<ffffffff8100d150>] ? child_rip+0x0/0x20
> INFO: lockdep is turned off.
> Kernel panic - not syncing: hung_task: blocked tasks
>
Here are two more oops - not substantially different, but then I
attempted to decode the addresses between the Call Traces
INFO: task irq/19-ehci_hcd:611 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
irq/19-ehci_h D ffff88002bfd1880 6832 611 2 0x00000000
BUG: using smp_processor_id() in preemptible [00000000] code: khungtaskd/343
caller is show_stack_log_lvl+0x37/0x12e
Pid: 343, comm: khungtaskd Not tainted 2.6.31-rc6-rt3 #1
Call Trace:
[<ffffffff811fe1b6>] debug_smp_processor_id+0xda/0x108
[<ffffffff8100efbd>] show_stack_log_lvl+0x37/0x12e
[<ffffffff813df08c>] ? printk+0x4b/0x67
[<ffffffff810101ae>] show_stack+0x2a/0x40
[<ffffffff810496eb>] sched_show_task+0xd3/0xef
[<ffffffff810b6c66>] watchdog+0x1a7/0x21b
[<ffffffff81041c49>] ? need_resched+0x31/0x4f
[<ffffffff810b6abf>] ? watchdog+0x0/0x21b
[<ffffffff810728ee>] kthread+0xad/0xb5
[<ffffffff8104a1b3>] ? finish_task_switch+0xab/0x15e
[<ffffffff8100d15a>] child_rip+0xa/0x20
[<ffffffff8100cac0>] ? restore_args+0x0/0x30
[<ffffffff81072841>] ? kthread+0x0/0xb5
[<ffffffff8100d150>] ? child_rip+0x0/0x20
ffff880138963df0 0000000000000082 00000000b8d49caa 00000000b8d49caa
ffff880138963d80 ffffffff813e28d8 ffff880138ee5340 ffff880138c94040
ffff880138ee56d8 0000000000000246 ffff880138963db0 ffffffff813e10c3
Call Trace:
[<ffffffff813e28d8>] ? _atomic_spin_unlock_irqrestore+0x5f/0x91
[<ffffffff813e10c3>] ? rt_spin_lock_slowunlock+0x58/0x9c
[<ffffffff813e1ed6>] ? rt_spin_unlock+0x57/0x72
[<ffffffff810b7ade>] ? irq_thread+0x0/0x1d5
[<ffffffff813e01dc>] schedule+0x22/0x47
[<ffffffff810728da>] kthread+0x99/0xb5
[<ffffffff8104a1b3>] ? finish_task_switch+0xab/0x15e
[<ffffffff8100d15a>] child_rip+0xa/0x20
[<ffffffff8100cac0>] ? restore_args+0x0/0x30
[<ffffffff813e1149>] ? rt_spin_lock_slowlock+0x42/0x29e
[<ffffffff81072841>] ? kthread+0x0/0xb5
[<ffffffff8100d150>] ? child_rip+0x0/0x20
INFO: lockdep is turned off.
Kernel panic - not syncing: hung_task: blocked tasks
-------------------------------------------------------------------------------
INFO: task irq/19-ehci_hcd:611 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
irq/19-ehci_h D ffff88002bfd1880 6672 611 2 0x00000000
BUG: using smp_processor_id() in preemptible [00000000] code: khungtaskd/343
caller is show_stack_log_lvl+0x37/0x12e
Pid: 343, comm: khungtaskd Not tainted 2.6.31-rc6-rt3 #1
Call Trace:
[<ffffffff811fe1b6>] debug_smp_processor_id+0xda/0x108
[<ffffffff8100efbd>] show_stack_log_lvl+0x37/0x12e
[<ffffffff813df08c>] ? printk+0x4b/0x67
[<ffffffff810101ae>] show_stack+0x2a/0x40
[<ffffffff810496eb>] sched_show_task+0xd3/0xef
[<ffffffff810b6c66>] watchdog+0x1a7/0x21b
[<ffffffff81041c49>] ? need_resched+0x31/0x4f
[<ffffffff810b6abf>] ? watchdog+0x0/0x21b
[<ffffffff810728ee>] kthread+0xad/0xb5
[<ffffffff8104a1b3>] ? finish_task_switch+0xab/0x15e
[<ffffffff8100d15a>] child_rip+0xa/0x20
[<ffffffff8100cac0>] ? restore_args+0x0/0x30
[<ffffffff81072841>] ? kthread+0x0/0xb5
[<ffffffff8100d150>] ? child_rip+0x0/0x20
ffff8801389a5df0 0000000000000082 ffff8801389a5d80 ffffffff8108f769
ffff8801389a5d80 ffffffff813e28ef ffff8801389a0b40 ffff880138f49780
ffff8801389a0ed8 0000000038cd1a40 ffff8801389a5db0 ffffffff813e10eb
Call Trace:
[<ffffffff8108f769>] ? rt_mutex_adjust_prio+0x44/0x63
[<ffffffff813e28ef>] ? _atomic_spin_unlock_irqrestore+0x76/0x91
[<ffffffff813e10eb>] ? rt_spin_lock_slowunlock+0x80/0x9c
[<ffffffff813e1ed6>] ? rt_spin_unlock+0x57/0x72
[<ffffffff810b7ade>] ? irq_thread+0x0/0x1d5
[<ffffffff813e01dc>] schedule+0x22/0x47
[<ffffffff810728da>] kthread+0x99/0xb5
[<ffffffff8104a1b3>] ? finish_task_switch+0xab/0x15e
[<ffffffff8100d15a>] child_rip+0xa/0x20
[<ffffffff8100cac0>] ? restore_args+0x0/0x30
[<ffffffff81072841>] ? kthread+0x0/0xb5
[<ffffffff8100d150>] ? child_rip+0x0/0x20
INFO: lockdep is turned off.
Kernel panic - not syncing: hung_task: blocked tasks
for a in "ffff880138963df0 0000000000000082 00000000b8d49caa 00000000b8d49caa
> ffff880138963d80 ffffffff813e28d8 ffff880138ee5340 ffff880138c94040
> ffff880138ee56d8 0000000000000246 ffff880138963db0 ffffffff813e10c3
> "; do
> addr2line -e /bld/2.6.31-rc6-rt3/vmlinux $a
> done
??:0
??:0
??:0
??:0
??:0
/home/jkacur/rt.linux.git/arch/x86/include/asm/thread_info.h:216
??:0
??:0
??:0
??:0
??:0
/home/jkacur/rt.linux.git/kernel/rtmutex.c:904
[jkacur@tycho oops]$ for a in "ffff8801389a5df0 0000000000000082
ffff8801389a5d80 ffffffff8108f769
> ffff8801389a5d80 ffffffff813e28ef ffff8801389a0b40 ffff880138f49780
> ffff8801389a0ed8 0000000038cd1a40 ffff8801389a5db0 ffffffff813e10eb
> Call Trace:
> "; do
> addr2line -e /bld/2.6.31-rc6-rt3/vmlinux $a
> done
??:0
??:0
??:0
/home/jkacur/rt.linux.git/kernel/rtmutex.c:168
??:0
/home/jkacur/rt.linux.git/kernel/spinlock.c:157
??:0
??:0
??:0
??:0
??:0
/home/jkacur/rt.linux.git/kernel/rtmutex.c:913
??:0
??:0
prev parent reply other threads:[~2009-08-18 9:18 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-17 23:51 John Kacur
2009-08-18 9:18 ` John Kacur [this message]
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