On Tue, Aug 18, 2009 at 1:51 AM, John Kacur<jkacur@xxxxxxxxx> 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 -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
