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Date: Wed, 13 Nov 2013 17:45:59 -0500 (EST)
From: Vince Weaver <vincent.weaver@...ne.edu>
To: LKML <linux-kernel@...r.kernel.org>
cc: Ingo Molnar <mingo@...nel.org>,
Peter Zijlstra <peterz@...radead.org>,
Paul Mackerras <paulus@...ba.org>,
Arnaldo Carvalho de Melo <acme@...stprotocols.net>
Subject: perf sw_event related lockup
Hello
so with the perf_fuzzer modified to avoid the tracepoint issues, I've
triggered this software-event related soft lockup.
>From what I can gather from the backtraces, they all map to the loop
in do_perf_sw_event() in kernel/events/core.c
hlist_for_each_entry_rcu(event, head, hlist_entry) {
if (perf_swevent_match(event, type, event_id, data, regs))
perf_swevent_event(event, nr, data, regs);
}
is it possible to get stuck in that as an infinite loop?
below is the dmesg from the lockup, I eventually had to reboot to clear
the problem:
[ 345.354950] NOHZ: local_softirq_pending 100
[ 416.043831] ------------[ cut here ]------------
[ 416.047607] WARNING: CPU: 0 PID: 2853 at arch/x86/kernel/cpu/perf_event.c:1076 x86_pmu_start+0x46/0xee()
[ 416.047607] Modules linked in: cpufreq_userspace cpufreq_stats cpufreq_powersave cpufreq_conservative f71882fg acpi_cpufreq mcs7830 psmouse usbnet evdev serio_raw coretemp pcspkr video wmi processor ohci_pci thermal_sys ohci_hcd button i2c_nforce2 sg ehci_pci ehci_hcd sd_mod usbcore usb_common
[ 416.047607] CPU: 0 PID: 2853 Comm: perf_fuzzer Not tainted 3.12.0 #2
[ 416.047607] Hardware name: AOpen DE7000/nMCP7ALPx-DE R1.06 Oct.19.2012, BIOS 080015 10/19/2012
[ 416.047607] 0000000000000434 ffff88011ad81bc8 ffffffff8151aad6 0000000000000000
[ 416.047607] ffffffff8103cd68 ffff88011fc15b38 ffffffff810127b3 ffff88011b313400
[ 416.047607] 0000000000000021 0000000000000000 0000000000000000 ffff88011fc0b940
[ 416.047607] Call Trace:
[ 416.047607] [<ffffffff8151aad6>] ? dump_stack+0x41/0x53
[ 416.047607] [<ffffffff8103cd68>] ? warn_slowpath_common+0x81/0x9c
[ 416.047607] [<ffffffff810127b3>] ? x86_pmu_start+0x46/0xee
[ 416.047607] [<ffffffff810127b3>] ? x86_pmu_start+0x46/0xee
[ 416.047607] [<ffffffff81012a2e>] ? x86_pmu_enable+0x1d3/0x285
[ 416.047607] [<ffffffff810c79e0>] ? perf_event_context_sched_in+0x6d/0x8d
[ 416.047607] [<ffffffff810c7a21>] ? __perf_event_task_sched_in+0x21/0x108
[ 416.047607] [<ffffffff8106657b>] ? finish_task_switch+0x46/0x98
[ 416.047607] [<ffffffff8151c9ee>] ? __schedule+0x4f7/0x54b
[ 416.047607] [<ffffffff810667ad>] ? __cond_resched+0x2a/0x35
[ 416.047607] [<ffffffff8151cabd>] ? _cond_resched+0x2c/0x37
[ 416.047607] [<ffffffff8151afc1>] ? mutex_lock+0x16/0x37
[ 416.047607] [<ffffffff8131575b>] ? n_tty_write+0x2aa/0x3eb
[ 416.047607] [<ffffffff810664d6>] ? try_to_wake_up+0x1ab/0x1ab
[ 416.047607] [<ffffffff81312de6>] ? tty_write+0x19c/0x22e
[ 416.047607] [<ffffffff813154b1>] ? n_tty_ioctl+0xc5/0xc5
[ 416.047607] [<ffffffff81112a67>] ? vfs_write+0xb9/0x132
[ 416.047607] [<ffffffff81112bc2>] ? SyS_write+0x59/0x86
[ 416.047607] [<ffffffff81524e11>] ? tracesys+0xd4/0xd9
[ 416.047607] ---[ end trace ce7dd64597479b92 ]---
[ 416.755310] NOHZ: local_softirq_pending 100
[ 452.232000] BUG: soft lockup - CPU#1 stuck for 23s! [perf_fuzzer:7211]
[ 452.232000] Modules linked in: cpufreq_userspace cpufreq_stats cpufreq_powersave cpufreq_conservative f71882fg acpi_cpufreq mcs7830 psmouse usbnet evdev serio_raw coretemp pcspkr video wmi processor ohci_pci thermal_sys ohci_hcd button i2c_nforce2 sg ehci_pci ehci_hcd sd_mod usbcore usb_common
[ 452.232000] CPU: 1 PID: 7211 Comm: perf_fuzzer Tainted: G W 3.12.0 #2
[ 452.232000] Hardware name: AOpen DE7000/nMCP7ALPx-DE R1.06 Oct.19.2012, BIOS 080015 10/19/2012
[ 452.232000] task: ffff8800c4bd6100 ti: ffff8800c42fa000 task.ti: ffff8800c42fa000
[ 452.232000] RIP: 0010:[<ffffffff810caa4c>] [<ffffffff810caa4c>] __perf_sw_event+0x9a/0x1a5
[ 452.232000] RSP: 0018:ffff8800c42fbc98 EFLAGS: 00000286
[ 452.232000] RAX: ffff880037f5ec16 RBX: ffff88011fc92ac0 RCX: ffff8800c42fbe88
[ 452.232000] RDX: ffff8800c42fbc98 RSI: 0000000000000001 RDI: ffff880037f5ec00
[ 452.232000] RBP: 0000000000000001 R08: 0000000000000018 R09: 0140000000000000
[ 452.232000] R10: ffff88011fc92ac0 R11: ffff88011b348010 R12: bf4bf357febfceb5
[ 452.232000] R13: 0000000000000001 R14: f9eed3fcf7377feb R15: fdd3ff677744feef
[ 452.232000] FS: 00007f01b4263700(0000) GS:ffff88011fc80000(0000) knlGS:0000000000000000
[ 452.232000] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 452.232000] CR2: 00007f01b42639d0 CR3: 00000000c40f1000 CR4: 00000000000407e0
[ 452.232000] DR0: 0000000001404010 DR1: 0000000080002706 DR2: 0000000100000000
[ 452.232000] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[ 452.232000] Stack:
[ 452.232000] 79d2f9f7ffffefff bfb7cedef5dbdfee ffdfefcf57ffbf76 dcfe7f7fdddbef2f
[ 452.232000] 00007f01b42639d0 fed7dbefff6ef7dd f7ffffeef7bbf7f8 dbdf9f0fdf7ffff3
[ 452.232000] 0000000000000000 0000000000000000 afaecfbfbbe5eefb 0000000000000000
[ 452.232000] Call Trace:
[ 452.232000] [<ffffffff81520fa3>] ? __do_page_fault+0x191/0x3f5
[ 452.232000] [<ffffffff81066edb>] ? sched_clock_local+0x13/0x76
[ 452.232000] [<ffffffff81066edb>] ? sched_clock_local+0x13/0x76
[ 452.232000] [<ffffffff8151e232>] ? page_fault+0x22/0x30
[ 452.232000] [<ffffffff8129cfe0>] ? __put_user_4+0x20/0x30
[ 452.232000] [<ffffffff81066629>] ? schedule_tail+0x5c/0x60
[ 452.232000] [<ffffffff81524b7f>] ? ret_from_fork+0xf/0xb0
[ 452.232000] Code: 48 c7 84 24 80 00 00 00 00 00 00 00 48 c7 44 24 48 00 00 00 00 65 48 03 04 25 78 cd 00 00 48 8b 08 48 85 c9 75 68 e9 c9 00 00 00 <41> 83 bc 24 b0 00 00 00 01 75 48 4d 39 b4 24 b8 00 00 00 75 3e
[ 480.231999] BUG: soft lockup - CPU#1 stuck for 23s! [perf_fuzzer:7211]
[ 480.232000] Modules linked in: cpufreq_userspace cpufreq_stats cpufreq_powersave cpufreq_conservative f71882fg acpi_cpufreq mcs7830 psmouse usbnet evdev serio_raw coretemp pcspkr video wmi processor ohci_pci thermal_sys ohci_hcd button i2c_nforce2 sg ehci_pci ehci_hcd sd_mod usbcore usb_common
[ 480.232000] CPU: 1 PID: 7211 Comm: perf_fuzzer Tainted: G W 3.12.0 #2
[ 480.232000] Hardware name: AOpen DE7000/nMCP7ALPx-DE R1.06 Oct.19.2012, BIOS 080015 10/19/2012
[ 480.232000] task: ffff8800c4bd6100 ti: ffff8800c42fa000 task.ti: ffff8800c42fa000
[ 480.232000] RIP: 0010:[<ffffffff810cab0c>] [<ffffffff810cab0c>] __perf_sw_event+0x15a/0x1a5
[ 480.232000] RSP: 0018:ffff8800c42fbc98 EFLAGS: 00000286
[ 480.232000] RAX: ffff880037f5ec16 RBX: ffff88011fc92ac0 RCX: ffff8800c42fbe88
[ 480.232000] RDX: ffff8800c42fbc98 RSI: 0000000000000001 RDI: ffff880037f5ec00
[ 480.232000] RBP: 0000000000000001 R08: 0000000000000018 R09: 0140000000000000
[ 480.232000] R10: ffff88011fc92ac0 R11: ffff88011b348010 R12: bf4bf357febfceb5
[ 480.232000] R13: 0000000000000001 R14: f9eed3fcf7377feb R15: fdd3ff677744feef
[ 480.232000] FS: 00007f01b4263700(0000) GS:ffff88011fc80000(0000) knlGS:0000000000000000
[ 480.232000] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 480.232000] CR2: 00007f01b42639d0 CR3: 00000000c40f1000 CR4: 00000000000407e0
[ 480.232000] DR0: 0000000001404010 DR1: 0000000080002706 DR2: 0000000100000000
[ 480.232000] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[ 480.232000] Stack:
[ 480.232000] 79d2f9f7ffffefff bfb7cedef5dbdfee ffdfefcf57ffbf76 dcfe7f7fdddbef2f
[ 480.232000] 00007f01b42639d0 fed7dbefff6ef7dd f7ffffeef7bbf7f8 dbdf9f0fdf7ffff3
[ 480.232000] 0000000000000000 0000000000000000 afaecfbfbbe5eefb 0000000000000000
[ 480.232000] Call Trace:
[ 480.232000] [<ffffffff81520fa3>] ? __do_page_fault+0x191/0x3f5
[ 480.232000] [<ffffffff81066edb>] ? sched_clock_local+0x13/0x76
[ 480.232000] [<ffffffff81066edb>] ? sched_clock_local+0x13/0x76
[ 480.232000] [<ffffffff8151e232>] ? page_fault+0x22/0x30
[ 480.232000] [<ffffffff8129cfe0>] ? __put_user_4+0x20/0x30
[ 480.232000] [<ffffffff81066629>] ? schedule_tail+0x5c/0x60
[ 480.232000] [<ffffffff81524b7f>] ? ret_from_fork+0xf/0xb0
[ 480.232000] Code: 48 c1 e6 39 48 c1 e0 3f 4c 29 c2 48 01 fa 48 29 f2 48 8d 04 02 48 c1 e8 38 48 8d 04 c1 48 8b 00 48 8d 50 c0 48 85 c0 4c 0f 45 e2 <4d> 85 e4 0f 85 37 ff ff ff 48 c7 c0 90 ed 00 00 65 48 03 04 25
[ 486.527998] INFO: rcu_sched self-detected stall on CPU
[ 486.531999] INFO: rcu_sched detected stalls on CPUs/tasks: { 1} (detected by 0, t=15002 jiffies, g=6562, c=6561, q=96)
[ 486.532000] sending NMI to all CPUs:
[ 486.528000] NMI backtrace for cpu 1
[ 486.528000] CPU: 1 PID: 7211 Comm: perf_fuzzer Tainted: G W 3.12.0 #2
[ 486.528000] Hardware name: AOpen DE7000/nMCP7ALPx-DE R1.06 Oct.19.2012, BIOS 080015 10/19/2012
[ 486.528000] task: ffff8800c4bd6100 ti: ffff8800c42fa000 task.ti: ffff8800c42fa000
[ 486.528000] RIP: 0010:[<ffffffff8129c063>] [<ffffffff8129c063>] delay_tsc+0x23/0x50
[ 486.528000] RSP: 0018:ffff88011fc83ba8 EFLAGS: 00000046
[ 486.528000] RAX: 0000000018e375ef RBX: ffffffff81c86d40 RCX: 0000000018e3731d
[ 486.528000] RDX: 000000000000012b RSI: 0000000000000001 RDI: 00000000000009d2
[ 486.528000] RBP: ffff88011fc83ba8 R08: 0000000000000001 R09: 0000000300000003
[ 486.528000] R10: 0000000000000005 R11: ffff88011fc83f00 R12: 00000000000026f2
[ 486.528000] R13: 0000000000000020 R14: ffffffff81c04982 R15: ffffffff8132c081
[ 486.528000] FS: 00007f01b4263700(0000) GS:ffff88011fc80000(0000) knlGS:0000000000000000
[ 486.528000] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 486.528000] CR2: 00007f01b42639d0 CR3: 00000000c40f1000 CR4: 00000000000407e0
[ 486.528000] DR0: 0000000001404010 DR1: 0000000080002706 DR2: 0000000100000000
[ 486.528000] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[ 486.528000] Stack:
[ 486.528000] ffff88011fc83bd8 ffffffff8132c039 0000000300000003 ffffffff81c86d40
[ 486.528000] 0000000000000046 0000000000000039 ffff88011fc83bf8 ffffffff8132c09d
[ 486.528000] ffffffff81c04970 ffffffff81c86d40 ffff88011fc83c38 ffffffff813284f9
[ 486.528000] Call Trace:
[ 486.528000] <IRQ> [<ffffffff8132c039>] ? wait_for_xmitr+0x4b/0x93
[ 486.528000] [<ffffffff8132c09d>] ? serial8250_console_putchar+0x1c/0x2e
[ 486.528000] [<ffffffff813284f9>] ? uart_console_write+0x45/0x5b
[ 486.528000] [<ffffffff8132deab>] ? serial8250_console_write+0xb4/0x102
[ 486.528000] [<ffffffff810779f8>] ? T.924+0xb9/0xcb
[ 486.528000] [<ffffffff81077b36>] ? console_unlock+0x12c/0x32c
[ 486.528000] [<ffffffff810782f5>] ? vprintk_emit+0x3ca/0x3f3
[ 486.528000] [<ffffffff8151a94d>] ? printk+0x4d/0x4f
[ 486.528000] [<ffffffff81067bd7>] ? sched_slice+0x80/0x82
[ 486.528000] [<ffffffff810a3beb>] ? rcu_check_callbacks+0x14e/0x5bf
[ 486.528000] [<ffffffff810471e8>] ? update_process_times+0x41/0x71
[ 486.528000] [<ffffffff8108729a>] ? tick_sched_handle+0x4a/0x58
[ 486.528000] [<ffffffff81087465>] ? tick_sched_timer+0x5d/0x7c
[ 486.528000] [<ffffffff8105be6e>] ? __run_hrtimer+0xba/0x145
[ 486.528000] [<ffffffff81087408>] ? tick_nohz_handler+0xb0/0xb0
[ 486.528000] [<ffffffff8105c143>] ? hrtimer_interrupt+0xd5/0x1c6
[ 486.528000] [<ffffffff815269e4>] ? smp_trace_apic_timer_interrupt+0x53/0x91
[ 486.528000] [<ffffffff8152597a>] ? trace_apic_timer_interrupt+0x6a/0x70
[ 486.528000] <EOI> [<ffffffff810cab38>] ? __perf_sw_event+0x186/0x1a5
[ 486.528000] [<ffffffff810cab40>] ? __perf_sw_event+0x18e/0x1a5
[ 486.528000] [<ffffffff81520fa3>] ? __do_page_fault+0x191/0x3f5
[ 486.528000] [<ffffffff81066edb>] ? sched_clock_local+0x13/0x76
[ 486.528000] [<ffffffff81066edb>] ? sched_clock_local+0x13/0x76
[ 486.528000] [<ffffffff8151e232>] ? page_fault+0x22/0x30
[ 486.528000] [<ffffffff8129cfe0>] ? __put_user_4+0x20/0x30
[ 486.528000] [<ffffffff81066629>] ? schedule_tail+0x5c/0x60
[ 486.528000] [<ffffffff81524b7f>] ? ret_from_fork+0xf/0xb0
[ 486.528000] Code: 8d 3c bf e9 ae ff ff ff 55 48 89 e5 66 66 66 66 90 65 8b 34 25 d0 b0 00 00 66 66 90 0f ae e8 0f 31 89 c1 66 66 90 0f ae e8 0f 31 <89> c2 29 ca 39 fa 73 23 f3 90 65 44 8b 04 25 d0 b0 00 00 44 39
[ 486.532000] NMI backtrace for cpu 0
[ 486.532000] CPU: 0 PID: 7215 Comm: perf_fuzzer Tainted: G W 3.12.0 #2
[ 486.532000] Hardware name: AOpen DE7000/nMCP7ALPx-DE R1.06 Oct.19.2012, BIOS 080015 10/19/2012
[ 486.532000] task: ffff8800c425a180 ti: ffff8800c4316000 task.ti: ffff8800c4316000
[ 486.532000] RIP: 0010:[<ffffffff8129c003>] [<ffffffff8129c003>] __const_udelay+0x15/0x29
[ 486.532000] RSP: 0000:ffff88011fc03da8 EFLAGS: 00000092
[ 486.532000] RAX: 0000000001062560 RBX: 0000000000000001 RCX: 0000000000000003
[ 486.532000] RDX: 00000000009aa0a0 RSI: 0000000000000200 RDI: 0000000000418958
[ 486.532000] RBP: ffff88011fc03dc8 R08: 0000000000000000 R09: 0000000000000008
[ 486.532000] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88011fc0d9d0
[ 486.532000] R13: ffffffff81a39780 R14: 0000000000000001 R15: ffff8800c4316010
[ 486.532000] FS: 00007f01b4263700(0000) GS:ffff88011fc00000(0000) knlGS:0000000000000000
[ 486.532000] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 486.532000] CR2: 00007f9cc6ece188 CR3: 00000000c4780000 CR4: 00000000000407f0
[ 486.532000] DR0: 0000000100000000 DR1: 0000000080002706 DR2: 0000000100000000
[ 486.532000] DR3: 0000000080000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[ 486.532000] Stack:
[ 486.532000] ffffffff81a39780 ffffffff81028fa0 00000000000019a1 ffffffff81a39780
[ 486.532000] ffff88011fc03e38 ffffffff810a3ee2 00000000008efa7e ffffffff81a39780
[ 486.532000] 0000000000000060 ffffffff81a9bd70 0000000000000000 0000000000000083
[ 486.532000] Call Trace:
[ 486.532000] <IRQ> [<ffffffff81028fa0>] ? arch_trigger_all_cpu_backtrace+0x78/0x8c
[ 486.532000] [<ffffffff810a3ee2>] ? rcu_check_callbacks+0x445/0x5bf
[ 486.532000] [<ffffffff810471e8>] ? update_process_times+0x41/0x71
[ 486.532000] [<ffffffff8108729a>] ? tick_sched_handle+0x4a/0x58
[ 486.532000] [<ffffffff81087465>] ? tick_sched_timer+0x5d/0x7c
[ 486.532000] [<ffffffff8105be6e>] ? __run_hrtimer+0xba/0x145
[ 486.532000] [<ffffffff81087408>] ? tick_nohz_handler+0xb0/0xb0
[ 486.532000] [<ffffffff8105c143>] ? hrtimer_interrupt+0xd5/0x1c6
[ 486.532000] [<ffffffff815269e4>] ? smp_trace_apic_timer_interrupt+0x53/0x91
[ 486.532000] [<ffffffff8152597a>] ? trace_apic_timer_interrupt+0x6a/0x70
[ 486.532000] <EOI> Code: 17 c9 c3 55 48 89 e5 66 66 66 66 90 48 8b 05 ad 42 7c 00 c9 ff e0 48 83 ec 08 48 8d 04 bd 00 00 00 00 65 48 8b 14 25 e0 22 01 00 <48> 6b d2 3e f7 e2 48 8b 05 88 42 7c 00 48 8d 7a 01 5a ff e0 55
[ 486.528000] { 1} (t=15424 jiffies g=6562 c=6561 q=96)
[ 486.528000] sending NMI to all CPUs:
[ 486.528000] NMI backtrace for cpu 1
[ 486.528000] CPU: 1 PID: 7211 Comm: perf_fuzzer Tainted: G W 3.12.0 #2
[ 486.528000] Hardware name: AOpen DE7000/nMCP7ALPx-DE R1.06 Oct.19.2012, BIOS 080015 10/19/2012
[ 486.528000] task: ffff8800c4bd6100 ti: ffff8800c42fa000 task.ti: ffff8800c42fa000
[ 486.528000] RIP: 0010:[<ffffffff8129c063>] [<ffffffff8129c063>] delay_tsc+0x23/0x50
[ 486.528000] RSP: 0018:ffff88011fc83da8 EFLAGS: 00000893
[ 486.528000] RAX: 000000001b2ef428 RBX: 0000000000000001 RCX: 000000001b2ef402
[ 486.528000] RDX: 000000000000012c RSI: 0000000000000001 RDI: 0000000000265910
[ 486.528000] RBP: ffff88011fc83da8 R08: 0000000000000000 R09: 0000000000000008
[ 486.528000] R10: ffff88011fc83be8 R11: ffff88011f01f400 R12: ffff88011fc8d9d0
[ 486.528000] R13: ffffffff81a39780 R14: ffffffff81a3b088 R15: ffff8800c42fa010
[ 486.528000] FS: 00007f01b4263700(0000) GS:ffff88011fc80000(0000) knlGS:0000000000000000
[ 486.528000] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 486.528000] CR2: 00007f01b42639d0 CR3: 00000000c40f1000 CR4: 00000000000407e0
[ 486.528000] DR0: 0000000001404010 DR1: 0000000080002706 DR2: 0000000100000000
[ 486.528000] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[ 486.528000] Stack:
[ 486.528000] ffff88011fc83dc8 ffffffff81028fa0 0000000000000060 ffffffff81a39780
[ 486.528000] ffff88011fc83e38 ffffffff810a3c8e ffffffff81a14b60 0000000000000000
[ 486.528000] 0000000000000060 ffffffff81a9bd70 0000000000000001 0000000000000000
[ 486.528000] Call Trace:
[ 486.528000] <IRQ>
[ 486.528000] [<ffffffff81028fa0>] ? arch_trigger_all_cpu_backtrace+0x78/0x8c
[ 486.528000] [<ffffffff810a3c8e>] ? rcu_check_callbacks+0x1f1/0x5bf
[ 486.528000] [<ffffffff810471e8>] ? update_process_times+0x41/0x71
[ 486.528000] [<ffffffff8108729a>] ? tick_sched_handle+0x4a/0x58
[ 486.528000] [<ffffffff81087465>] ? tick_sched_timer+0x5d/0x7c
[ 486.528000] [<ffffffff8105be6e>] ? __run_hrtimer+0xba/0x145
[ 486.528000] [<ffffffff81087408>] ? tick_nohz_handler+0xb0/0xb0
[ 486.528000] [<ffffffff8105c143>] ? hrtimer_interrupt+0xd5/0x1c6
[ 486.528000] [<ffffffff815269e4>] ? smp_trace_apic_timer_interrupt+0x53/0x91
[ 486.528000] [<ffffffff8152597a>] ? trace_apic_timer_interrupt+0x6a/0x70
[ 486.528000] <EOI>
[ 486.528000] [<ffffffff810cab38>] ? __perf_sw_event+0x186/0x1a5
[ 486.528000] [<ffffffff810cab40>] ? __perf_sw_event+0x18e/0x1a5
[ 486.528000] [<ffffffff81520fa3>] ? __do_page_fault+0x191/0x3f5
[ 486.528000] [<ffffffff81066edb>] ? sched_clock_local+0x13/0x76
[ 486.528000] [<ffffffff81066edb>] ? sched_clock_local+0x13/0x76
[ 486.528000] [<ffffffff8151e232>] ? page_fault+0x22/0x30
[ 486.528000] [<ffffffff8129cfe0>] ? __put_user_4+0x20/0x30
[ 486.528000] [<ffffffff81066629>] ? schedule_tail+0x5c/0x60
[ 486.528000] [<ffffffff81524b7f>] ? ret_from_fork+0xf/0xb0
[ 486.528000] Code: 8d 3c bf e9 ae ff ff ff 55 48 89 e5 66 66 66 66 90 65 8b 34 25 d0 b0 00 00 66 66 90 0f ae e8 0f 31 89 c1 66 66 90 0f ae e8 0f 31 <89> c2 29 ca 39 fa 73 23 f3 90 65 44 8b 04 25 d0 b0 00 00 44 39
[ 488.244000] NMI backtrace for cpu 0
[ 486.528000] INFO: NMI handler (arch_trigger_all_cpu_backtrace_handler) took too long to run: 828.947 msecs
[ 488.244000] CPU: 0 PID: 7215 Comm: perf_fuzzer Tainted: G W 3.12.0 #2
[ 488.244000] Hardware name: AOpen DE7000/nMCP7ALPx-DE R1.06 Oct.19.2012, BIOS 080015 10/19/2012
[ 488.244000] task: ffff8800c425a180 ti: ffff8800c4316000 task.ti: ffff8800c4316000
[ 488.244000] RIP: 0033:[<0000000000406c67>] [<0000000000406c67>] 0x406c66
[ 488.244000] RSP: 002b:00007fff569a7dd8 EFLAGS: 00000206
[ 488.244000] RAX: 0000000000000000 RBX: 346dc5d63886594b RCX: 000000000000a7ca
[ 488.244000] RDX: 0000000000000000 RSI: 00007f01b404b640 RDI: 00007f01b404c240
[ 488.244000] RBP: 00000000ffffffff R08: 0000000000000000 R09: 00007f01b4263700
[ 488.244000] R10: 00007f01b42639d0 R11: 0000000000000246 R12: ffffffffffffffff
[ 488.244000] R13: 0000000000000033 R14: 0000000000000053 R15: 0000000000694a68
[ 488.244000] FS: 00007f01b4263700(0000) GS:ffff88011fc00000(0000) knlGS:0000000000000000
[ 488.244000] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 488.244000] CR2: 00007f9cc6ece188 CR3: 00000000c4780000 CR4: 00000000000407f0
[ 488.244000] DR0: 0000000100000000 DR1: 0000000080002706 DR2: 0000000100000000
[ 488.244000] DR3: 0000000080000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[ 488.244000]
[ 488.244000] INFO: NMI handler (arch_trigger_all_cpu_backtrace_handler) took too long to run: 1192.664 msecs
[ 512.231999] BUG: soft lockup - CPU#1 stuck for 22s! [perf_fuzzer:7211]
[ 512.232000] Modules linked in: cpufreq_userspace cpufreq_stats cpufreq_powersave cpufreq_conservative f71882fg acpi_cpufreq mcs7830 psmouse usbnet evdev serio_raw coretemp pcspkr video wmi processor ohci_pci thermal_sys ohci_hcd button i2c_nforce2 sg ehci_pci ehci_hcd sd_mod usbcore usb_common
[ 512.232000] CPU: 1 PID: 7211 Comm: perf_fuzzer Tainted: G W 3.12.0 #2
[ 512.232000] Hardware name: AOpen DE7000/nMCP7ALPx-DE R1.06 Oct.19.2012, BIOS 080015 10/19/2012
[ 512.232000] task: ffff8800c4bd6100 ti: ffff8800c42fa000 task.ti: ffff8800c42fa000
[ 512.232000] RIP: 0010:[<ffffffff810caa8a>] [<ffffffff810caa8a>] __perf_sw_event+0xd8/0x1a5
[ 512.232000] RSP: 0018:ffff8800c42fbc98 EFLAGS: 00000246
[ 512.232000] RAX: ffff880037f5ec16 RBX: ffff88011fc92ac0 RCX: ffff8800c42fbe88
[ 512.232000] RDX: ffff8800c42fbc98 RSI: 0000000000000001 RDI: ffff880037f5ec00
[ 512.232000] RBP: 0000000000000001 R08: 0000000000000018 R09: 0140000000000000
[ 512.232000] R10: ffff88011fc92ac0 R11: ffff88011b348010 R12: bf4bf357febfceb5
[ 512.232000] R13: 0000000000000001 R14: f9eed3fcf7377feb R15: fdd3ff677744feef
[ 512.232000] FS: 00007f01b4263700(0000) GS:ffff88011fc80000(0000) knlGS:0000000000000000
[ 512.232000] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 512.232000] CR2: 00007f01b42639d0 CR3: 00000000c40f1000 CR4: 00000000000407e0
[ 512.232000] DR0: 0000000001404010 DR1: 0000000080002706 DR2: 0000000100000000
[ 512.232000] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[ 512.232000] Stack:
[ 512.232000] 79d2f9f7ffffefff bfb7cedef5dbdfee ffdfefcf57ffbf76 dcfe7f7fdddbef2f
[ 512.232000] 00007f01b42639d0 fed7dbefff6ef7dd f7ffffeef7bbf7f8 dbdf9f0fdf7ffff3
[ 512.232000] 0000000000000000 0000000000000000 afaecfbfbbe5eefb 0000000000000000
[ 512.232000] Call Trace:
[ 512.232000] [<ffffffff81520fa3>] ? __do_page_fault+0x191/0x3f5
[ 512.232000] [<ffffffff81066edb>] ? sched_clock_local+0x13/0x76
[ 512.232000] [<ffffffff81066edb>] ? sched_clock_local+0x13/0x76
[ 512.232000] [<ffffffff8151e232>] ? page_fault+0x22/0x30
[ 512.232000] [<ffffffff8129cfe0>] ? __put_user_4+0x20/0x30
[ 512.232000] [<ffffffff81066629>] ? schedule_tail+0x5c/0x60
[ 512.232000] [<ffffffff81524b7f>] ? ret_from_fork+0xf/0xb0
[ 512.232000] Code: 75 3e 41 f6 84 24 80 01 00 00 01 75 33 48 85 db 0f 84 ba 00 00 00 41 8a 84 24 d8 00 00 00 a8 10 74 09 f6 83 88 00 00 00 03 75 15 <a8> 20 0f 84 9d 00 00 00 f6 83 88 00 00 00 03 0f 85 90 00 00 00
[ 540.232001] BUG: soft lockup - CPU#1 stuck for 23s! [perf_fuzzer:7211]
[ 540.232001] Modules linked in: cpufreq_userspace cpufreq_stats cpufreq_powersave cpufreq_conservative f71882fg acpi_cpufreq mcs7830 psmouse usbnet evdev serio_raw coretemp pcspkr video wmi processor ohci_pci thermal_sys ohci_hcd button i2c_nforce2 sg ehci_pci ehci_hcd sd_mod usbcore usb_common
[ 540.232001] CPU: 1 PID: 7211 Comm: perf_fuzzer Tainted: G W 3.12.0 #2
[ 540.232001] Hardware name: AOpen DE7000/nMCP7ALPx-DE R1.06 Oct.19.2012, BIOS 080015 10/19/2012
[ 540.232001] task: ffff8800c4bd6100 ti: ffff8800c42fa000 task.ti: ffff8800c42fa000
[ 540.232001] RIP: 0010:[<ffffffff810caaad>] [<ffffffff810caaad>] __perf_sw_event+0xfb/0x1a5
[ 540.232001] RSP: 0018:ffff8800c42fbc98 EFLAGS: 00000286
[ 540.232001] RAX: ffff880037f5ec16 RBX: ffff88011fc92ac0 RCX: ffff8800c42fbe88
[ 540.232001] RDX: ffff8800c42fbc98 RSI: 0000000000000001 RDI: ffff880037f5ec00
[ 540.232001] RBP: 0000000000000001 R08: 0000000000000018 R09: 0140000000000000
[ 540.232001] R10: ffff88011fc92ac0 R11: ffff88011b348010 R12: bf4bf357febfceb5
[ 540.232001] R13: 0000000000000001 R14: f9eed3fcf7377feb R15: fdd3ff677744feef
[ 540.232001] FS: 00007f01b4263700(0000) GS:ffff88011fc80000(0000) knlGS:0000000000000000
[ 540.232001] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 540.232001] CR2: 00007f01b42639d0 CR3: 00000000c40f1000 CR4: 00000000000407e0
[ 540.232001] DR0: 0000000001404010 DR1: 0000000080002706 DR2: 0000000100000000
[ 540.232001] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[ 540.232001] Stack:
[ 540.232001] 79d2f9f7ffffefff bfb7cedef5dbdfee ffdfefcf57ffbf76 dcfe7f7fdddbef2f
[ 540.232001] 00007f01b42639d0 fed7dbefff6ef7dd f7ffffeef7bbf7f8 dbdf9f0fdf7ffff3
[ 540.232001] 0000000000000000 0000000000000000 afaecfbfbbe5eefb 0000000000000000
[ 540.232001] Call Trace:
[ 540.232001] [<ffffffff81520fa3>] ? __do_page_fault+0x191/0x3f5
[ 540.232001] [<ffffffff81066edb>] ? sched_clock_local+0x13/0x76
[ 540.232001] [<ffffffff81066edb>] ? sched_clock_local+0x13/0x76
[ 540.232001] [<ffffffff8151e232>] ? page_fault+0x22/0x30
[ 540.232001] [<ffffffff8129cfe0>] ? __put_user_4+0x20/0x30
[ 540.232001] [<ffffffff81066629>] ? schedule_tail+0x5c/0x60
[ 540.232001] [<ffffffff81524b7f>] ? ret_from_fork+0xf/0xb0
[ 540.232001] Code: 83 88 00 00 00 03 75 15 a8 20 0f 84 9d 00 00 00 f6 83 88 00 00 00 03 0f 85 90 00 00 00 4d 8b 64 24 40 4d 85 e4 74 6c 49 83 ec 40 <eb> 5d 45 89 f6 48 b8 00 00 00 00 01 00 00 00 48 ba 01 00 fc ff
[ 568.232001] BUG: soft lockup - CPU#1 stuck for 23s! [perf_fuzzer:7211]
[ 568.232001] Modules linked in: cpufreq_userspace cpufreq_stats cpufreq_powersave cpufreq_conservative f71882fg acpi_cpufreq mcs7830 psmouse usbnet evdev serio_raw coretemp pcspkr video wmi processor ohci_pci thermal_sys ohci_hcd button i2c_nforce2 sg ehci_pci ehci_hcd sd_mod usbcore usb_common
[ 568.232001] CPU: 1 PID: 7211 Comm: perf_fuzzer Tainted: G W 3.12.0 #2
[ 568.232001] Hardware name: AOpen DE7000/nMCP7ALPx-DE R1.06 Oct.19.2012, BIOS 080015 10/19/2012
[ 568.232001] task: ffff8800c4bd6100 ti: ffff8800c42fa000 task.ti: ffff8800c42fa000
[ 568.232001] RIP: 0010:[<ffffffff810ca6a4>] [<ffffffff810ca6a4>] perf_swevent_overflow+0x58/0x58
[ 568.232001] RSP: 0018:ffff8800c42fbc90 EFLAGS: 00000246
[ 568.232001] RAX: ffff880037f5ec16 RBX: ffff88011fc92ac0 RCX: ffff8800c42fbe88
[ 568.232001] RDX: ffff8800c42fbc98 RSI: 0000000000000001 RDI: ffff880037f5ec00
[ 568.232001] RBP: 0000000000000001 R08: 0000000000000018 R09: 0140000000000000
[ 568.232001] R10: ffff88011fc92ac0 R11: ffff88011b348010 R12: bf4bf357febfceb5
[ 568.232001] R13: 0000000000000001 R14: f9eed3fcf7377feb R15: fdd3ff677744feef
[ 568.232001] FS: 00007f01b4263700(0000) GS:ffff88011fc80000(0000) knlGS:0000000000000000
[ 568.232001] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 568.232001] CR2: 00007f01b42639d0 CR3: 00000000c40f1000 CR4: 00000000000407e0
[ 568.232001] DR0: 0000000001404010 DR1: 0000000080002706 DR2: 0000000100000000
[ 568.232001] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[ 568.232001] Stack:
[ 568.232001] ffffffff810cab40 79d2f9f7ffffefff bfb7cedef5dbdfee ffdfefcf57ffbf76
[ 568.232001] dcfe7f7fdddbef2f 00007f01b42639d0 fed7dbefff6ef7dd f7ffffeef7bbf7f8
[ 568.232001] dbdf9f0fdf7ffff3 0000000000000000 0000000000000000 afaecfbfbbe5eefb
[ 568.232001] Call Trace:
[ 568.232001] [<ffffffff810cab40>] ? __perf_sw_event+0x18e/0x1a5
[ 568.232001] [<ffffffff81520fa3>] ? __do_page_fault+0x191/0x3f5
[ 568.232001] [<ffffffff81066edb>] ? sched_clock_local+0x13/0x76
[ 568.232001] [<ffffffff81066edb>] ? sched_clock_local+0x13/0x76
[ 568.232001] [<ffffffff8151e232>] ? page_fault+0x22/0x30
[ 568.232001] [<ffffffff8129cfe0>] ? __put_user_4+0x20/0x30
[ 568.232001] [<ffffffff81066629>] ? schedule_tail+0x5c/0x60
[ 568.232001] [<ffffffff81524b7f>] ? ret_from_fork+0xf/0xb0
[ 568.232001] Code: 75 1c eb 1f 4c 89 e9 4c 89 e2 48 89 ef e8 e9 fc ff ff 85 c0 75 0d 48 ff cb be 01 00 00 00 48 85 db 75 e1 5d 5b 5d 41 5c 41 5d c3 <48> 83 ec 08 48 01 77 70 48 85 c9 74 64 48 83 bf c0 00 00 00 00
--
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