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Date: Sun, 04 Mar 2007 17:51:07 +0100 From: Frédéric RISS <frederic.riss@...il.com> To: Thomas Gleixner <tglx@...utronix.de> Cc: Linux Kernel list <linux-kernel@...r.kernel.org> Subject: Re: HR timers soft lockup on resume from suspend to ram On dim, 2007-03-04 at 17:28 +0100, Frédéric RISS wrote: > When the system is hung, and I press on the power button, I get this > backtrace (copied from the screen, netconsole won't allow to capture > it): > > BUG: soft lockup detected on CPU#0! > [<c0155c88>] softlockup_tick+0xa8/0x110 > [<c0130283>] update_process_times+0x33/0x80 > [<c014215b>] tick_sched_timer+0x5b/0xc0 > [<c013e3f3>] hrtimer_interrupt+0x143/0x1d0 > [<c01172e0>] smp_apic_timer_interrupt+0x50/0x80 > [<c0104e4c>] apic_timer_interrupt+0x28/0x30 > [<c0372926>] _spin_unlock_irq+0x6/0x30 > [<c0370488>] __sched_text_start+0x308/0x880 > [<c0372909>] _spin_unlock_irqrestore+0x19/0x30 > [<c01378ee>] worker_thread+0x12e/0x170 > [<c0120a50>] default_wake_function+0x0/0x10 > [<c01377c0>] worker_thread+0x0/0x170 > [<c013a88a>] kthread+0xba/0xf0 > [<c013a7d0>] kthread+0x0/0xf0 > [<c0104fb3>] kernel_thread_helper+0x7/0x14 > ====================== > > I get it every time I press on the power button. Turns, out this wasn't true. In fact multiple power button presses will bring the system back to life. I hadn't the right console loglevel setting when I first tested that. With a higher loglevel I get this by pressing the power button at least 4 times: Mar 4 17:43:58 minifunky kernel: [ 580.222727] Enabling non-boot CPUs ... Mar 4 17:43:58 minifunky kernel: [ 597.696477] BUG: soft lockup detected on CPU#0! Mar 4 17:43:58 minifunky kernel: [ 597.698186] [softlockup_tick+168/272] softlockup_tick+0xa8/0x110 Mar 4 17:43:58 minifunky kernel: [ 597.699924] [update_process_times+51/128] update_process_times+0x33/0x80 Mar 4 17:43:58 minifunky kernel: [ 597.701676] [tick_sched_timer+91/192] tick_sched_timer+0x5b/0xc0 Mar 4 17:43:58 minifunky kernel: [ 597.703453] [hrtimer_interrupt+323/464] hrtimer_interrupt+0x143/0x1d0 Mar 4 17:43:58 minifunky kernel: [ 597.705255] [smp_apic_timer_interrupt+80/128] smp_apic_timer_interrupt+0x50/0x80 Mar 4 17:43:58 minifunky kernel: [ 597.707066] [apic_timer_interrupt+40/48] apic_timer_interrupt+0x28/0x30 Mar 4 17:43:58 minifunky kernel: [ 597.708885] [scrdown+27/208] scrdown+0x1b/0xd0 Mar 4 17:43:58 minifunky kernel: [ 597.710684] [worker_thread+248/368] worker_thread+0xf8/0x170 Mar 4 17:43:58 minifunky kernel: [ 597.712505] [default_wake_function+0/16] default_wake_function+0x0/0x10 Mar 4 17:43:58 minifunky kernel: [ 597.714317] [worker_thread+0/368] worker_thread+0x0/0x170 Mar 4 17:43:58 minifunky kernel: [ 597.716137] [kthread+186/240] kthread+0xba/0xf0 Mar 4 17:43:58 minifunky kernel: [ 597.717949] [kthread+0/240] kthread+0x0/0xf0 Mar 4 17:43:58 minifunky kernel: [ 597.719737] [kernel_thread_helper+7/20] kernel_thread_helper+0x7/0x14 Mar 4 17:43:58 minifunky kernel: [ 597.721562] ======================= Mar 4 17:43:58 minifunky kernel: [ 606.119695] SMP alternatives: switching to SMP code Mar 4 17:43:58 minifunky kernel: [ 606.121668] Booting processor 1/1 eip 3000 Mar 4 17:43:58 minifunky kernel: [ 606.123518] CPU 1 irqstacks, hard=c04cf000 soft=c04cd000 Mar 4 17:43:58 minifunky kernel: [ 606.135911] Initializing CPU#1 Mar 4 17:43:58 minifunky kernel: [ 606.196496] Calibrating delay using timer specific routine.. 3333.89 BogoMIPS (lpj=1666945) Mar 4 17:43:58 minifunky kernel: [ 606.196503] CPU: After generic identify, caps: bfe9fbff 00100000 00000000 00000000 0000c1a9 00000000 00000000 Mar 4 17:43:58 minifunky kernel: [ 606.196508] monitor/mwait feature present. Mar 4 17:43:58 minifunky kernel: [ 606.196512] CPU: L1 I cache: 32K, L1 D cache: 32K Mar 4 17:43:58 minifunky kernel: [ 606.196514] CPU: L2 cache: 2048K Mar 4 17:43:58 minifunky kernel: [ 606.196517] CPU: Physical Processor ID: 0 Mar 4 17:43:58 minifunky kernel: [ 606.196518] CPU: Processor Core ID: 1 Mar 4 17:43:58 minifunky kernel: [ 606.196520] CPU: After all inits, caps: bfe9fbff 00100000 00000000 00002940 0000c1a9 00000000 00000000 Mar 4 17:43:58 minifunky kernel: [ 606.196526] Intel machine check architecture supported. Mar 4 17:43:58 minifunky kernel: [ 606.196532] Intel machine check reporting enabled on CPU#1. Mar 4 17:43:58 minifunky kernel: [ 606.197027] CPU1: Intel Genuine Intel(R) CPU T2300 @ 1.66GHz stepping 08 Mar 4 17:43:58 minifunky kernel: [ 606.223215] BUG: soft lockup detected on CPU#1! Mar 4 17:43:58 minifunky kernel: [ 606.225588] [softlockup_tick+168/272] softlockup_tick+0xa8/0x110 Mar 4 17:43:58 minifunky kernel: [ 606.228020] [update_process_times+51/128] update_process_times+0x33/0x80 Mar 4 17:43:58 minifunky kernel: [ 606.230450] [tick_periodic+34/128] tick_periodic+0x22/0x80 Mar 4 17:43:58 minifunky kernel: [ 606.232846] [tick_handle_periodic+21/112] tick_handle_periodic+0x15/0x70 Mar 4 17:43:58 minifunky kernel: [ 606.235299] [smp_apic_timer_interrupt+80/128] smp_apic_timer_interrupt+0x50/0x80 Mar 4 17:43:58 minifunky kernel: [ 606.237742] [apic_timer_interrupt+40/48] apic_timer_interrupt+0x28/0x30 Mar 4 17:43:58 minifunky kernel: [ 606.240237] [_spin_unlock_irq+6/48] _spin_unlock_irq+0x6/0x30 Mar 4 17:43:58 minifunky kernel: [ 606.242760] [schedule+776/2176] __sched_text_start+0x308/0x880 Mar 4 17:43:58 minifunky kernel: [ 606.245334] [migration_thread+0/528] migration_thread+0x0/0x210 Mar 4 17:43:58 minifunky kernel: [ 606.247907] [kthread+173/240] kthread+0xad/0xf0 Mar 4 17:43:58 minifunky kernel: [ 606.250478] [kthread+0/240] kthread+0x0/0xf0 Mar 4 17:43:58 minifunky kernel: [ 606.253069] [kernel_thread_helper+7/20] kernel_thread_helper+0x7/0x14 Mar 4 17:43:58 minifunky kernel: [ 606.255677] ======================= Mar 4 17:43:58 minifunky kernel: [ 606.258301] Switched to high resolution mode on CPU 1 Mar 4 17:43:58 minifunky kernel: [ 606.263491] CPU1 is up - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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