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Date: Wed, 18 Oct 2006 17:07:59 -0700 From: Badari Pulavarty <pbadari@...ibm.com> To: Andrew Morton <akpm@...l.org> Cc: Nick Piggin <nickpiggin@...oo.com.au>, lkml <linux-kernel@...r.kernel.org> Subject: Re: 2.6.19-rc2-mm1 On Wed, 2006-10-18 at 16:25 -0700, Andrew Morton wrote: > On Wed, 18 Oct 2006 16:01:05 -0700 > Badari Pulavarty <pbadari@...ibm.com> wrote: > > > > Is the NMI watchdog ticking over? > > > > I think so. > > > > # dmesg | grep NMI > > ACPI: LAPIC_NMI (acpi_id[0x00] high edge lint[0x1]) > > ACPI: LAPIC_NMI (acpi_id[0x01] high edge lint[0x1]) > > ACPI: LAPIC_NMI (acpi_id[0x02] high edge lint[0x1]) > > ACPI: LAPIC_NMI (acpi_id[0x03] high edge lint[0x1]) > > testing NMI watchdog ... OK. > > > What does it say in /proc/interrupts? > > The x86_64 nmi watchdog handling looks rather complex. > > <checks a couple of x86-64 machines> > > The /proc/interrutps NMI count seems to be going up by about > one-per-minute. How odd. Maybe you just need to wait longer. While the soft lock up messages are getting printed.. (waited for 5 min for these messages).. # while :; do grep NMI /proc/interrupts; sleep 30; done NMI: 265 73 41 47 NMI: 265 81 62 47 NMI: 265 81 71 69 NMI: 265 81 93 77 NMI: 265 81 101 99 NMI: 288 82 101 107 NMI: 296 82 131 129 NMI: 296 82 153 137 NMI: 296 82 161 160 NMI: 296 105 161 167 NMI: 296 112 184 167 Looking at the messages, I don't think trace all cpus is working .. BUG: soft lockup detected on CPU#1! Call Trace: [<ffffffff8020b481>] show_trace+0x41/0x70 [<ffffffff8020b4c2>] dump_stack+0x12/0x20 [<ffffffff8024bbca>] softlockup_tick+0xfa/0x120 [<ffffffff802322e7>] update_process_times+0x57/0x90 [<ffffffff80218104>] smp_local_timer_interrupt+0x34/0x60 [<ffffffff8021885b>] smp_apic_timer_interrupt+0x4b/0x80 [<ffffffff8020a7e6>] apic_timer_interrupt+0x66/0x70 [<0000000000000010>] BUG: soft lockup detected on CPU#2! Call Trace: [<ffffffff8020b481>] show_trace+0x41/0x70 [<ffffffff8020b4c2>] dump_stack+0x12/0x20 [<ffffffff8024bbca>] softlockup_tick+0xfa/0x120 [<ffffffff802322e7>] update_process_times+0x57/0x90 [<ffffffff80218104>] smp_local_timer_interrupt+0x34/0x60 [<ffffffff8021885b>] smp_apic_timer_interrupt+0x4b/0x80 [<ffffffff8020a7e6>] apic_timer_interrupt+0x66/0x70 [<0000000000000010>] BUG: soft lockup detected on CPU#2! Call Trace: [<ffffffff8020b481>] show_trace+0x41/0x70 [<ffffffff8020b4c2>] dump_stack+0x12/0x20 [<ffffffff8024bbca>] softlockup_tick+0xfa/0x120 [<ffffffff802322e7>] update_process_times+0x57/0x90 [<ffffffff80218104>] smp_local_timer_interrupt+0x34/0x60 [<ffffffff8021885b>] smp_apic_timer_interrupt+0x4b/0x80 [<ffffffff8020a7e6>] apic_timer_interrupt+0x66/0x70 [<0000000000000010>] BUG: soft lockup detected on CPU#3! Call Trace: [<ffffffff8020b481>] show_trace+0x41/0x70 [<ffffffff8020b4c2>] dump_stack+0x12/0x20 [<ffffffff8024bbca>] softlockup_tick+0xfa/0x120 [<ffffffff802322e7>] update_process_times+0x57/0x90 [<ffffffff80218104>] smp_local_timer_interrupt+0x34/0x60 [<ffffffff8021885b>] smp_apic_timer_interrupt+0x4b/0x80 [<ffffffff8020a7e6>] apic_timer_interrupt+0x66/0x70 [<0000000000000010>] BUG: soft lockup detected on CPU#3! Call Trace: [<ffffffff8020b481>] show_trace+0x41/0x70 [<ffffffff8020b4c2>] dump_stack+0x12/0x20 [<ffffffff8024bbca>] softlockup_tick+0xfa/0x120 [<ffffffff802322e7>] update_process_times+0x57/0x90 [<ffffffff80218104>] smp_local_timer_interrupt+0x34/0x60 [<ffffffff8021885b>] smp_apic_timer_interrupt+0x4b/0x80 [<ffffffff8020a7e6>] apic_timer_interrupt+0x66/0x70 [<0000000000000010>] BUG: soft lockup detected on CPU#2! Call Trace: [<ffffffff8020b481>] show_trace+0x41/0x70 [<ffffffff8020b4c2>] dump_stack+0x12/0x20 [<ffffffff8024bbca>] softlockup_tick+0xfa/0x120 [<ffffffff802322e7>] update_process_times+0x57/0x90 [<ffffffff80218104>] smp_local_timer_interrupt+0x34/0x60 [<ffffffff8021885b>] smp_apic_timer_interrupt+0x4b/0x80 [<ffffffff8020a7e6>] apic_timer_interrupt+0x66/0x70 [<0000000000000010>] BUG: soft lockup detected on CPU#3! Call Trace: [<ffffffff8020b481>] show_trace+0x41/0x70 [<ffffffff8020b4c2>] dump_stack+0x12/0x20 [<ffffffff8024bbca>] softlockup_tick+0xfa/0x120 [<ffffffff802322e7>] update_process_times+0x57/0x90 [<ffffffff80218104>] smp_local_timer_interrupt+0x34/0x60 [<ffffffff8021885b>] smp_apic_timer_interrupt+0x4b/0x80 [<ffffffff8020a7e6>] apic_timer_interrupt+0x66/0x70 [<0000000000000010>] BUG: soft lockup detected on CPU#3! Call Trace: [<ffffffff8020b481>] show_trace+0x41/0x70 [<ffffffff8020b4c2>] dump_stack+0x12/0x20 [<ffffffff8024bbca>] softlockup_tick+0xfa/0x120 [<ffffffff802322e7>] update_process_times+0x57/0x90 [<ffffffff80218104>] smp_local_timer_interrupt+0x34/0x60 [<ffffffff8021885b>] smp_apic_timer_interrupt+0x4b/0x80 [<ffffffff8020a7e6>] apic_timer_interrupt+0x66/0x70 [<0000000000000010>] BUG: soft lockup detected on CPU#0! Call Trace: [<ffffffff8020b481>] show_trace+0x41/0x70 [<ffffffff8020b4c2>] dump_stack+0x12/0x20 [<ffffffff8024bbca>] softlockup_tick+0xfa/0x120 [<ffffffff802322e7>] update_process_times+0x57/0x90 [<ffffffff80218104>] smp_local_timer_interrupt+0x34/0x60 [<ffffffff8021885b>] smp_apic_timer_interrupt+0x4b/0x80 [<ffffffff8020a7e6>] apic_timer_interrupt+0x66/0x70 [<0000000000000010>] BUG: soft lockup detected on CPU#0! Call Trace: [<ffffffff8020b481>] show_trace+0x41/0x70 [<ffffffff8020b4c2>] dump_stack+0x12/0x20 [<ffffffff8024bbca>] softlockup_tick+0xfa/0x120 [<ffffffff802322e7>] update_process_times+0x57/0x90 [<ffffffff80218104>] smp_local_timer_interrupt+0x34/0x60 [<ffffffff8021885b>] smp_apic_timer_interrupt+0x4b/0x80 [<ffffffff8020a7e6>] apic_timer_interrupt+0x66/0x70 [<0000000000000010>] BUG: soft lockup detected on CPU#0! Call Trace: [<ffffffff8020b481>] show_trace+0x41/0x70 [<ffffffff8020b4c2>] dump_stack+0x12/0x20 [<ffffffff8024bbca>] softlockup_tick+0xfa/0x120 [<ffffffff802322e7>] update_process_times+0x57/0x90 [<ffffffff80218104>] smp_local_timer_interrupt+0x34/0x60 [<ffffffff8021885b>] smp_apic_timer_interrupt+0x4b/0x80 [<ffffffff8020a7e6>] apic_timer_interrupt+0x66/0x70 [<0000000000000010>] BUG: soft lockup detected on CPU#2! Call Trace: [<ffffffff8020b481>] show_trace+0x41/0x70 [<ffffffff8020b4c2>] dump_stack+0x12/0x20 [<ffffffff8024bbca>] softlockup_tick+0xfa/0x120 [<ffffffff802322e7>] update_process_times+0x57/0x90 [<ffffffff80218104>] smp_local_timer_interrupt+0x34/0x60 [<ffffffff8021885b>] smp_apic_timer_interrupt+0x4b/0x80 [<ffffffff8020a7e6>] apic_timer_interrupt+0x66/0x70 [<0000000000000010>] BUG: soft lockup detected on CPU#2! Call Trace: [<ffffffff8020b481>] show_trace+0x41/0x70 [<ffffffff8020b4c2>] dump_stack+0x12/0x20 [<ffffffff8024bbca>] softlockup_tick+0xfa/0x120 [<ffffffff802322e7>] update_process_times+0x57/0x90 [<ffffffff80218104>] smp_local_timer_interrupt+0x34/0x60 [<ffffffff8021885b>] smp_apic_timer_interrupt+0x4b/0x80 [<ffffffff8020a7e6>] apic_timer_interrupt+0x66/0x70 [<0000000000000010>] BUG: soft lockup detected on CPU#3! Call Trace: [<ffffffff8020b481>] show_trace+0x41/0x70 [<ffffffff8020b4c2>] dump_stack+0x12/0x20 [<ffffffff8024bbca>] softlockup_tick+0xfa/0x120 [<ffffffff802322e7>] update_process_times+0x57/0x90 [<ffffffff80218104>] smp_local_timer_interrupt+0x34/0x60 [<ffffffff8021885b>] smp_apic_timer_interrupt+0x4b/0x80 [<ffffffff8020a7e6>] apic_timer_interrupt+0x66/0x70 [<0000000000000010>] BUG: soft lockup detected on CPU#3! Call Trace: [<ffffffff8020b481>] show_trace+0x41/0x70 [<ffffffff8020b4c2>] dump_stack+0x12/0x20 [<ffffffff8024bbca>] softlockup_tick+0xfa/0x120 [<ffffffff802322e7>] update_process_times+0x57/0x90 [<ffffffff80218104>] smp_local_timer_interrupt+0x34/0x60 [<ffffffff8021885b>] smp_apic_timer_interrupt+0x4b/0x80 [<ffffffff8020a7e6>] apic_timer_interrupt+0x66/0x70 [<0000000000000010>] BUG: soft lockup detected on CPU#3! Call Trace: [<ffffffff8020b481>] show_trace+0x41/0x70 [<ffffffff8020b4c2>] dump_stack+0x12/0x20 [<ffffffff8024bbca>] softlockup_tick+0xfa/0x120 [<ffffffff802322e7>] update_process_times+0x57/0x90 [<ffffffff80218104>] smp_local_timer_interrupt+0x34/0x60 [<ffffffff8021885b>] smp_apic_timer_interrupt+0x4b/0x80 [<ffffffff8020a7e6>] apic_timer_interrupt+0x66/0x70 [<0000000000000010>] BUG: soft lockup detected on CPU#2! Call Trace: [<ffffffff8020b481>] show_trace+0x41/0x70 [<ffffffff8020b4c2>] dump_stack+0x12/0x20 [<ffffffff8024bbca>] softlockup_tick+0xfa/0x120 [<ffffffff802322e7>] update_process_times+0x57/0x90 [<ffffffff80218104>] smp_local_timer_interrupt+0x34/0x60 [<ffffffff8021885b>] smp_apic_timer_interrupt+0x4b/0x80 [<ffffffff8020a7e6>] apic_timer_interrupt+0x66/0x70 [<0000000000000010>] BUG: soft lockup detected on CPU#2! Call Trace: [<ffffffff8020b481>] show_trace+0x41/0x70 [<ffffffff8020b4c2>] dump_stack+0x12/0x20 [<ffffffff8024bbca>] softlockup_tick+0xfa/0x120 [<ffffffff802322e7>] update_process_times+0x57/0x90 [<ffffffff80218104>] smp_local_timer_interrupt+0x34/0x60 [<ffffffff8021885b>] smp_apic_timer_interrupt+0x4b/0x80 [<ffffffff8020a7e6>] apic_timer_interrupt+0x66/0x70 [<0000000000000010>] BUG: soft lockup detected on CPU#3! Call Trace: [<ffffffff8020b481>] show_trace+0x41/0x70 [<ffffffff8020b4c2>] dump_stack+0x12/0x20 [<ffffffff8024bbca>] softlockup_tick+0xfa/0x120 [<ffffffff802322e7>] update_process_times+0x57/0x90 [<ffffffff80218104>] smp_local_timer_interrupt+0x34/0x60 [<ffffffff8021885b>] smp_apic_timer_interrupt+0x4b/0x80 [<ffffffff8020a7e6>] apic_timer_interrupt+0x66/0x70 [<0000000000000010>] BUG: soft lockup detected on CPU#3! Call Trace: [<ffffffff8020b481>] show_trace+0x41/0x70 [<ffffffff8020b4c2>] dump_stack+0x12/0x20 [<ffffffff8024bbca>] softlockup_tick+0xfa/0x120 [<ffffffff802322e7>] update_process_times+0x57/0x90 [<ffffffff80218104>] smp_local_timer_interrupt+0x34/0x60 [<ffffffff8021885b>] smp_apic_timer_interrupt+0x4b/0x80 [<ffffffff8020a7e6>] apic_timer_interrupt+0x66/0x70 [<0000000000000010>] BUG: soft lockup detected on CPU#1! Call Trace: [<ffffffff8020b481>] show_trace+0x41/0x70 [<ffffffff8020b4c2>] dump_stack+0x12/0x20 [<ffffffff8024bbca>] softlockup_tick+0xfa/0x120 [<ffffffff802322e7>] update_process_times+0x57/0x90 [<ffffffff80218104>] smp_local_timer_interrupt+0x34/0x60 [<ffffffff8021885b>] smp_apic_timer_interrupt+0x4b/0x80 [<ffffffff8020a7e6>] apic_timer_interrupt+0x66/0x70 [<0000000000000010>] BUG: soft lockup detected on CPU#1! Call Trace: [<ffffffff8020b481>] show_trace+0x41/0x70 [<ffffffff8020b4c2>] dump_stack+0x12/0x20 [<ffffffff8024bbca>] softlockup_tick+0xfa/0x120 [<ffffffff802322e7>] update_process_times+0x57/0x90 [<ffffffff80218104>] smp_local_timer_interrupt+0x34/0x60 [<ffffffff8021885b>] smp_apic_timer_interrupt+0x4b/0x80 [<ffffffff8020a7e6>] apic_timer_interrupt+0x66/0x70 [<0000000000000010>] Thanks, Badari - 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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