-
[ 640.197874] ------------[ cut here ]------------
[ 640.200001] WARNING: CPU: 0 PID: 5336 at kernel/events/core.c:2478 task_ctx_sched_out+0x49/0x6e()
[ 640.200001] Modules linked in: cpufreq_userspace cpufreq_stats cpufreq_powersave cpufreq_conservative f71882fg mcs7830 usbnet evdev psmouse pcspkr serio_raw ohci_pci coretemp video wmi ohci_hcd button i2c_nforce2 acpi_cpufreq processor thermal_sys sg sd_mod ehci_pci ehci_hcd usbcore usb_common
[ 640.200001] CPU: 0 PID: 5336 Comm: perf_fuzzer Not tainted 3.18.0+ #166
[ 640.200001] Hardware name: AOpen DE7000/nMCP7ALPx-DE R1.06 Oct.19.2012, BIOS 080015 10/19/2012
[ 640.200001] 00000000000009ae ffff8800bda9fbf8 ffffffff8155cf3b 00000000000009ae
[ 640.200001] 0000000000000000 ffff8800bda9fc38 ffffffff8104361b 0000000000000000
[ 640.200001] ffffffff810d6759 ffffe8ffffc00910 ffff8800caeb6000 0000000000000000
[ 640.200001] Call Trace:
[ 640.200001] [] dump_stack+0x49/0x5e
[ 640.200001] [] warn_slowpath_common+0x81/0x9b
[ 640.200001] [] ? task_ctx_sched_out+0x49/0x6e
[ 640.200001] [] warn_slowpath_null+0x1a/0x1c
[ 640.200001] [] task_ctx_sched_out+0x49/0x6e
[ 640.200001] [] perf_event_exit_task+0xec/0x2e4
[ 640.200001] [] do_exit+0x40f/0x945
[ 640.200001] [] ? unlock_page+0x5e/0x60
[ 640.200001] [] ? do_wp_page+0x257/0x612
[ 640.200001] [] do_group_exit+0x78/0xa0
[ 640.200001] [] get_signal+0x47c/0x4a6
[ 640.200001] [] ? native_sched_clock+0x21/0x3e
[ 640.200001] [] do_signal+0x28/0x6a3
[ 640.200001] [] ? do_page_fault+0xc/0xe
[ 640.200001] [] ? page_fault+0x22/0x30
[ 640.200001] [] do_notify_resume+0x2c/0x64
[ 640.200001] [] retint_signal+0x41/0x7a
[ 640.200001] ---[ end trace 21f7f78e53adf48c ]---
[ 668.228001] NMI watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [perf_fuzzer:4932]
[ 668.228001] Modules linked in: cpufreq_userspace cpufreq_stats cpufreq_powersave cpufreq_conservative f71882fg mcs7830 usbnet evdev psmouse pcspkr serio_raw ohci_pci coretemp video wmi ohci_hcd button i2c_nforce2 acpi_cpufreq processor thermal_sys sg sd_mod ehci_pci ehci_hcd usbcore usb_common
[ 668.228001] CPU: 0 PID: 4932 Comm: perf_fuzzer Tainted: G W 3.18.0+ #166
[ 668.228001] Hardware name: AOpen DE7000/nMCP7ALPx-DE R1.06 Oct.19.2012, BIOS 080015 10/19/2012
[ 668.228001] task: ffff8800c8022000 ti: ffff8800ca364000 task.ti: ffff8800ca364000
[ 668.228001] RIP: 0010:[] [] perf_event_disable+0x95/0xbc
[ 668.228001] RSP: 0018:ffff8800ca367e78 EFLAGS: 00000202
[ 668.228001] RAX: 0000000000000001 RBX: ffffffff8109a620 RCX: 0000000000000000
[ 668.228001] RDX: 0000000000005f06 RSI: ffff8800ca367e38 RDI: ffff8800c8022000
[ 668.228001] RBP: ffff8800ca367eb8 R08: 0000000000000246 R09: 00007f4d89991120
[ 668.228001] R10: 00007f4d899910a4 R11: 0000000000000246 R12: ffff8800ca367e38
[ 668.228001] R13: ffffffff810d76ce R14: 0000000000000000 R15: 00007f4d89991120
[ 668.228001] FS: 00007f4d89ba7700(0000) GS:ffff88011fc00000(0000) knlGS:0000000000000000
[ 668.228001] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 668.228001] CR2: 000000000285ed68 CR3: 00000000ca26e000 CR4: 00000000000407f0
[ 668.228001] DR0: 0000000000000000 DR1: 000000000226e000 DR2: 0000000000000000
[ 668.228001] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[ 668.228001] Stack:
[ 668.228001] ffff880000000001 0000000000000002 ffff8800ca367eb8 ffffffff8155dff1
[ 668.228001] 0000000000000000 ffff8800cadca800 ffffffff810d79cb ffff8800caebc000
[ 668.228001] ffff8800ca367ee8 ffffffff810d5c07 ffff8800cadca800 ffff8800c8022000
[ 668.228001] Call Trace:
[ 668.228001] [] ? mutex_lock+0x16/0x37
[ 668.228001] [] ? perf_event_refresh+0x33/0x33
[ 668.228001] [] perf_event_for_each_child+0x6c/0x90
[ 668.228001] [] perf_event_task_disable+0x50/0x82
[ 668.228001] [] SyS_prctl+0x13d/0x3cb
[ 668.228001] [] system_call_fastpath+0x16/0x1b
[ 668.228001] Code: 63 68 0d 81 e8 d9 fc ff ff 85 c0 74 3a 4c 89 e7 e8 94 80 48 00 8b 43 78 83 f8 01 75 10 66 41 83 04 24 01 fb 49 8b bd 88 00 00 00 cd 85 c0 75 0f 48 89 df e8 1a d5 ff ff c7 43 78 ff ff ff ff
^GMessage from syslogd@core2 at Dec 8 14:04:49 ...
kernel:[ 668.228001] NMI watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [perf_fuzzer:4932]
[ 696.228001] NMI watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [perf_fuzzer:4932]
[ 696.228001] Modules linked in: cpufreq_userspace cpufreq_stats cpufreq_powersave cpufreq_conservative f71882fg mcs7830 usbnet evdev psmouse pcspkr serio_raw ohci_pci coretemp video wmi ohci_hcd button i2c_nforce2 acpi_cpufreq processor thermal_sys sg sd_mod ehci_pci ehci_hcd usbcore usb_common
[ 696.228001] CPU: 0 PID: 4932 Comm: perf_fuzzer Tainted: G W L 3.18.0+ #166
[ 696.228001] Hardware name: AOpen DE7000/nMCP7ALPx-DE R1.06 Oct.19.2012, BIOS 080015 10/19/2012
[ 696.228001] task: ffff8800c8022000 ti: ffff8800ca364000 task.ti: ffff8800ca364000
[ 696.228001] RIP: 0010:[] [] perf_event_disable+0x73/0xbc
[ 696.228001] RSP: 0018:ffff8800ca367e78 EFLAGS: 00000296
[ 696.228001] RAX: 00000000ffffffea RBX: ffffffff8109a620 RCX: 0000000000000000
[ 696.228001] RDX: ffff88011fc00000 RSI: ffff8800ca367e38 RDI: ffff8800ca367de8
[ 696.228001] RBP: ffff8800ca367eb8 R08: 0000000000000286 R09: 00007f4d89991120
[ 696.228001] R10: 00007f4d899910a4 R11: 0000000000000246 R12: ffff8800ca367e38
[ 696.228001] R13: ffffffff810d76ce R14: 0000000000000000 R15: 0000000000000246
[ 696.228001] FS: 00007f4d89ba7700(0000) GS:ffff88011fc00000(0000) knlGS:0000000000000000
[ 696.228001] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 696.228001] CR2: 000000000285ed68 CR3: 00000000ca26e000 CR4: 00000000000407f0
[ 696.228001] DR0: 0000000000000000 DR1: 000000000226e000 DR2: 0000000000000000
[ 696.228001] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[ 696.228001] Stack:
[ 696.228001] ffff880000000001 0000000000000002 ffff8800ca367eb8 ffffffff8155dff1
[ 696.228001] 0000000000000000 ffff8800cadca800 ffffffff810d79cb ffff8800caebc000
[ 696.228001] ffff8800ca367ee8 ffffffff810d5c07 ffff8800cadca800 ffff8800c8022000
[ 696.228001] Call Trace:
[ 696.228001] [] ? mutex_lock+0x16/0x37
[ 696.228001] [] ? perf_event_refresh+0x33/0x33
[ 696.228001] [] perf_event_for_each_child+0x6c/0x90
[ 696.228001] [] perf_event_task_disable+0x50/0x82
[ 696.228001] [] SyS_prctl+0x13d/0x3cb
[ 696.228001] [] system_call_fastpath+0x16/0x1b
[ 696.228001] Code: 00 00 48 c7 45 c8 63 68 0d 81 48 89 5d d0 c7 45 d8 fa ff ff ff e8 74 2b fc ff eb 4d 48 89 da 48 c7 c6 63 68 0d 81 e8 d9 fc ff ff <85> c0 74 3a 4c 89 e7 e8 94 80 48 00 8b 43 78 83 f8 01 75 10 66
^GMessage from syslogd@core2 at Dec 8 14:05:17 ...
kernel:[ 696.228001] NMI watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [pe
rf_fuzzer:4932]
[ 701.780000] INFO: rcu_sched self-detected stall on CPU { 0} (t=15000 jiffies
g=6340 c=6339 q=268)
[ 701.780001] Task dump for CPU 0:
[ 701.780001] perf_fuzzer R running task 0 4932 2703 0x00000008
[ 701.780001] 0000000000000000 ffff88011fc03d68 ffffffff81061c89 0000000000000
000
[ 701.780001] ffffffff81a3f340 ffff88011fc03d88 ffffffff81061ccd ffff88011fc03
d88
[ 701.780001] ffffffff81a3f340 ffff88011fc03db8 ffffffff81084ca0 ffffffff81a3f
340
[ 701.780001] Call Trace:
[ 701.780001] [] sched_show_task+0xc1/0xc6
[ 701.780001] [] dump_cpu_task+0x3f/0x43
[ 701.780001] [] rcu_dump_cpu_stacks+0x4f/0x91
[ 701.780001] [] rcu_check_callbacks+0x205/0x595
[ 701.780001] [] ? raise_softirq_irqoff+0x9/0x35
[ 701.780001] [] update_process_times+0x41/0x6a
[ 701.780001] [] tick_sched_handle+0x4a/0x59
[ 701.780001] [] tick_sched_timer+0x5d/0x84
[ 701.780001] [] __run_hrtimer+0xba/0x145
[ 701.780001] [] ? tick_nohz_handler+0xb6/0xb6
[ 701.780001] [] hrtimer_interrupt+0xd5/0x1c3
[ 701.780001] [] local_apic_timer_interrupt+0x58/0x5d
[ 701.780001] [] smp_apic_timer_interrupt+0x2a/0x3c
[ 701.780001] [] apic_timer_interrupt+0x6a/0x70
[ 701.780001] [] ? __perf_event_read+0xe5/0xe5
[ 701.780001] [] ? task_curr+0x22/0x2a
[ 701.780001] [] task_function_call+0x29/0x53
[ 701.780001] [] ? __perf_event_read+0xe5/0xe5
[ 701.780001] [] perf_event_disable+0x73/0xbc
[ 701.780001] [] ? mutex_lock+0x16/0x37
[ 701.780001] [] ? perf_event_refresh+0x33/0x33
[ 701.780001] [] perf_event_for_each_child+0x6c/0x90
[ 701.780001] [] perf_event_task_disable+0x50/0x82
[ 701.780001] [] SyS_prctl+0x13d/0x3cb
[ 701.780001] [] system_call_fastpath+0x16/0x1b
[ 728.228001] NMI watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [perf_fuzzer:4932]
-
*** perf_fuzzer 0.28 *** by Vince Weaver
Linux version 3.15.0-rc4+ x86_64
Processor: Intel 6/23/10
Seeding random number generator with 1399309111
/proc/sys/kernel/perf_event_max_sample_rate currently: 12500/s
/proc/sys/kernel/perf_event_paranoid currently: 1
Logging perf_event_open() failures: no
Running fsync after every syscall: no
To reproduce, try: ./perf_fuzzer -t OCIRMQWPFpAi -s 50000 -r 1399309111
Pid=25542, sleeping 1s
==================================================
Fuzzing the following syscalls:
mmap perf_event_open close read write ioctl fork prctl poll
*NOT* Fuzzing the following syscalls:
Also attempting the following:
busy-instruction-loop accessing-perf-proc-and-sys-files trashing-the-mma
p-page
*NOT* attempting the following:
signal-handler-on-overflow
==================================================
Iteration 10000
Open attempts: 307759 Successful: 908
EPERM : 20
ENOENT : 881
E2BIG : 35526
EBADF : 5257
EINVAL : 264612
ENOSPC : 40
EOPNOTSUPP : 515
Close attempts: 888 Successful: 888
Read attempts: 826 Successful: 698
Write attempts: 907 Successful: 0
Ioctl attempts: 872 Successful: 390
Mmap attempts: 908 Successful: 240
Prctl attempts: 877 Successful: 877
Fork attempts: 450 Successful: 450
Poll attempts: 886 Successful: 2
Access attempts: 894 Successful: 424
Trash mmap attempts: 878 Successful: 878
Overflows: 0
SIGIOs due to RT signal queue full: 0
[ 804.032050] ------------[ cut here ]------------
[ 804.036004] WARNING: CPU: 1 PID: 26033 at kernel/events/core.c:2398 task_ctx_
sched_out+0x49/0x6e()
[ 804.036004] Modules linked in: cpufreq_userspace cpufreq_stats cpufreq_powers
ave cpufreq_conservative f71882fg mcs7830 usbnet evdev video wmi acpi_cpufreq oh
ci_pci pcspkr psmouse button processor thermal_sys coretemp serio_raw ohci_hcd i
2c_nforce2 sg ehci_pci ehci_hcd sd_mod usbcore usb_common
[ 804.036004] CPU: 1 PID: 26033 Comm: perf_fuzzer Tainted: G D 3.15.
0-rc4+ #44
[ 804.036004] Hardware name: AOpen DE7000/nMCP7ALPx-DE R1.06 Oct.19.2012, BIO
S 080015 10/19/2012
[ 804.036004] 000000000000095e ffff880039ac3c08 ffffffff81539016 0000000000000
95e
[ 804.036004] 0000000000000000 ffff880039ac3c48 ffffffff8103fcb9 0000000000000
000
[ 804.036004] ffffffff810ca939 ffff88011fc95b08 ffff8800cbb6a010 0000000000000
000
[ 804.036004] Call Trace:
[ 804.036004] [] dump_stack+0x49/0x5b
[ 804.036004] [] warn_slowpath_common+0x81/0x9b
[ 804.036004] [] ? task_ctx_sched_out+0x49/0x6e
[ 804.036004] [] warn_slowpath_null+0x1a/0x1c
[ 804.036004] [] task_ctx_sched_out+0x49/0x6e
[ 804.036004] [] perf_event_exit_task+0xee/0x1fe
[ 804.036004] [] ? switch_task_namespaces+0x1d/0x51
[ 804.036004] [] do_exit+0x400/0x942
[ 804.036004] [] ? do_read_fault+0x169/0x263
[ 804.036004] [] ? unlock_page+0x27/0x2c
[ 804.036004] [] do_group_exit+0x78/0xa0
[ 804.036004] [] get_signal_to_deliver+0x46d/0x48a
[ 804.036004] [] ? function_trace_call+0xc8/0xf2
[ 804.036004] [] do_signal+0x46/0x5e8
[ 804.036004] [] ? __trace_buffer_unlock_commit+0x3c/0x44
[ 804.036004] [] ? ftrace_raw_event_sys_exit+0x4a/0x72
[ 804.036004] [] do_notify_resume+0x2c/0x64
[ 804.036004] [] retint_signal+0x3d/0x78
[ 804.036004] ---[ end trace 6cadd738b5f7eb96 ]---
-
WARNING: CPU: 0 PID: 25574 at kernel/events/core.c:2384 task_ctx_sched_out+0x6b/0x80()
Modules linked in: 8021q garp dccp_ipv4 dccp bridge stp snd_seq_dummy sctp fuse hidp bnep tun rfcomm llc2 af_key nfnetlink scsi_transport_iscsi ipt_ULOG can_bcm can_raw nfc caif_socket caif af_802154 ieee802154 phonet af_rxrpc can pppoe pppox ppp_generic slhc irda crc_ccitt rds rose x25 atm netrom appletalk ipx p8023 psnap p8022 llc ax25 cfg80211 coretemp hwmon x86_pkg_temp_thermal kvm_intel kvm snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel snd_hda_controller xfs snd_hda_codec snd_hwdep e1000e libcrc32c crct10dif_pclmul snd_seq snd_seq_device crc32c_intel snd_pcm btusb bluetooth ghash_clmulni_intel snd_timer snd ptp pcspkr pps_core serio_raw microcode shpchp 6lowpan_iphc usb_debug rfkill soundcore
CPU: 0 PID: 25574 Comm: trinity-c76 Not tainted 3.15.0-rc2+ #197
0000000000000009 000000006f572b93 ffff8802389b3df0 ffffffff8b74671d
0000000000000000 ffff8802389b3e28 ffffffff8b06d45d ffff8802441d7ad8
ffff880111e6adf0 0000000000000286 ffff88023fb8b5c0 ffff880111e6adf0
Call Trace:
[] dump_stack+0x4e/0x7a
[] warn_slowpath_common+0x7d/0xa0
[] warn_slowpath_null+0x1a/0x20
[] task_ctx_sched_out+0x6b/0x80
[] perf_event_comm+0x108/0x260
[] ? perf_event_fork+0x20/0x20
[] ? lock_release_holdtime.part.24+0xe6/0x160
[] ? get_parent_ip+0xd/0x50
[] set_task_comm+0x4f/0xc0
[] SyS_prctl+0x1d9/0x480
[] tracesys+0xdd/0xe2
-
WARNING: CPU: 0 PID: 12579 at kernel/events/core.c:2539 task_ctx_sched_out+0x503/0x8a0()
Modules linked in: nf_conntrack_netlink nf_conntrack pn_pep llc2 af_key rfcomm bnep snd_seq_dummy tun fuse hidp nfnetlink scsi_transport_iscsi can_raw can_bcm ipt_ULOG nfc caif_socket caif af_802154 phonet af_rxrpc can pppoe pppox ppp_generic slhc irda crc_ccitt rds rose x25 atm netrom appletalk ipx p8023 psnap p8022 llc ax25 cfg80211 snd_hda_codec_hdmi xfs snd_hda_codec_realtek coretemp hwmon snd_hda_codec_generic x86_pkg_temp_thermal snd_hda_intel kvm_intel snd_hda_codec kvm btusb snd_hwdep bluetooth snd_seq snd_seq_device crct10dif_pclmul snd_pcm crc32c_intel e1000e ghash_clmulni_intel 6lowpan_iphc libcrc32c microcode rfkill snd_timer serio_raw pcspkr usb_debug shpchp snd ptp soundcore pps_core
CPU: 0 PID: 12579 Comm: trinity-c5 Not tainted 3.14.0-rc2+ #117
0000000000000009 0000000044d442b6 ffff88009e1b7de0 ffffffff9972b1d1
0000000000000000 ffff88009e1b7e18 ffffffff9906d0cd ffff88024d017700
ffff8801185e5898 0000000000000282 ffff88023a892e60 ffff8801185e5898
Call Trace:
[] dump_stack+0x4e/0x7a
[] warn_slowpath_common+0x7d/0xa0
[] warn_slowpath_null+0x1a/0x20
[] task_ctx_sched_out+0x503/0x8a0
[] perf_event_comm+0x108/0x260
[] ? perf_event_fork+0x20/0x20
[] ? set_task_comm+0x25/0xc0
[] ? get_parent_ip+0xd/0x50
[] set_task_comm+0x4f/0xc0
[] SyS_prctl+0x22b/0x3d0
[] tracesys+0xd4/0xd9