linux-kernel - kill -9 doesn't help

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Message-ID: <1354807062.89073.YahooMailNeo@web164005.mail.gq1.yahoo.com>
Date:	Thu, 6 Dec 2012 07:17:42 -0800 (PST)
From:	Adko Branil <adkobranil@...oo.com>
To:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: kill -9 doesn't help 

Hello, during remote compilation network hung, then after relogin compilled again with success, but  found process "as" still working at 100%, and it was impossible to kill it even with "-9". Then after rebooting the system i took a look at syslog and found this oops:

Dec  6 17:12:47 c kernel: [5745980.766010] INFO: rcu_sched detected stalls on CPUs/tasks: { 0} (detected by 3, t=60002 jiffies)
Dec  6 17:12:47 c kernel: [5745980.766022] Pid: 0, comm: swapper/3 Tainted: G         C   3.2.29 #1
Dec  6 17:12:47 c kernel: [5745980.766026] Call Trace:
Dec  6 17:12:47 c kernel: [5745980.766029]  <IRQ>  [<ffffffff8109a408>] __rcu_pending+0x3e8/0x3f0
Dec  6 17:12:47 c kernel: [5745980.766044]  [<ffffffff8109ad91>] rcu_check_callbacks+0x61/0x110
Dec  6 17:12:47 c kernel: [5745980.766051]  [<ffffffff810540d3>] update_process_times+0x43/0x80
Dec  6 17:12:47 c kernel: [5745980.766057]  [<ffffffff810723c1>] tick_sched_timer+0x61/0xb0
Dec  6 17:12:47 c kernel: [5745980.766063]  [<ffffffff81066339>] __run_hrtimer.isra.31+0x49/0xd0
Dec  6 17:12:47 c kernel: [5745980.766068]  [<ffffffff81066b05>] hrtimer_interrupt+0xe5/0x210
Dec  6 17:12:47 c kernel: [5745980.766074]  [<ffffffff8101bed4>] smp_apic_timer_interrupt+0x64/0xa0
Dec  6 17:12:47 c kernel: [5745980.766081]  [<ffffffff815128cb>] apic_timer_interrupt+0x6b/0x70
Dec  6 17:12:47 c kernel: [5745980.766084]  <EOI>  [<ffffffff8103c17e>] ? pick_next_task_fair+0x6e/0x180
Dec  6 17:12:47 c kernel: [5745980.766096]  [<ffffffff812fd55e>] ? acpi_idle_enter_simple+0xbf/0xfc
Dec  6 17:12:47 c kernel: [5745980.766101]  [<ffffffff812fd559>] ? acpi_idle_enter_simple+0xba/0xfc
Dec  6 17:12:47 c kernel: [5745980.766108]  [<ffffffff8141b957>] cpuidle_idle_call+0x97/0x100
Dec  6 17:12:47 c kernel: [5745980.766113]  [<ffffffff81000955>] cpu_idle+0xa5/0x110
Dec  6 17:12:47 c kernel: [5745980.766118]  [<ffffffff815013c4>] start_secondary+0x1cf/0x1d6
Dec  6 17:15:47 c kernel: [5746160.798011] INFO: rcu_sched detected stalls on CPUs/tasks: { 0} (detected by 3, t=240034 jiffies)
Dec  6 17:15:47 c kernel: [5746160.798022] Pid: 0, comm: swapper/3 Tainted: G         C   3.2.29 #1
Dec  6 17:15:47 c kernel: [5746160.798026] Call Trace:
Dec  6 17:15:47 c kernel: [5746160.798029]  <IRQ>  [<ffffffff8109a408>] __rcu_pending+0x3Dec  6 17:19:24 c kernel: [    0.000000] ACPI: RSDP 00000000000f6b80 00014 (v00 GBT   )


The time of the oops is just before rebooting.

It is Slackware with kernel config: http://pastebin.com/HrWPQegM

Regards:
Adko.

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