* perf_fuzzer: BUG in kfree() in ftrace_graph_exit_task
@ 2014-03-31 16:23 Vince Weaver
2014-03-31 16:32 ` Thomas Gleixner
0 siblings, 1 reply; 4+ messages in thread
From: Vince Weaver @ 2014-03-31 16:23 UTC (permalink / raw)
To: LKML; +Cc: Peter Zijlstra, Ingo Molnar, Steven Rostedt, tglx
This turned up with the perf_fuzzer, haswell, 3.14.
I'm not sure if this is related to the other object corruption bug I am
seeing. The sympstoms are similar (BUG when dereferencing low invalid
kernel address) but this time the hrtimer code is not involved at all.
This isn't reproducible, that is if I re-run the fuzzer with the same
random seed after reboot the bug doesn't trigger.
[ 5498.573458] BUG: unable to handle kernel NULL pointer dereference at 000000000000006c
[ 5498.585181] IP: [<ffffffff81189111>] kfree+0x91/0x220
[ 5498.593887] PGD 0
[ 5498.599365] Oops: 0000 [#1] SMP
[ 5498.606127] Dumping ftrace buffer:
[ 5498.612973] (ftrace buffer empty)
[ 5498.619868] Modules linked in: nfsd auth_rpcgss oid_registry nfs_acl nfs lockd fscache sunrpc fuse snd_hda_codec_hdmi x86_pkg_temp_thermal intel_powerclamp coretemp i915 kvm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel drm_kms_helper snd_hda_codec_realtek tpm_tis tpm snd_hda_codec_generic aesni_intel aes_x86_64 drm lrw mei_me mei parport_pc gf128mul iTCO_wdt iTCO_vendor_support battery video parport i2c_algo_bit i2c_i801 snd_hda_intel snd_hda_codec snd_hwdep snd_pcm wmi psmouse pcspkr i2c_core button processor serio_raw snd_seq snd_seq_device lpc_ich snd_timer glue_helper ablk_helper evdev cryptd snd mfd_core soundcore sg sd_mod sr_mod crc_t10dif cdrom crct10dif_common hid_generic usbhid hid ehci_pci ahci xhci_hcd e1000e ehci_hcd libahci libata ptp crc32c_intel usbcore scsi_mod pps_core usb_common fan thermal thermal_sys
[ 5498.720303] CPU: 1 PID: 13 Comm: ksoftirqd/1 Tainted: G W 3.14.0+ #14
[ 5498.731359] Hardware name: LENOVO 10AM000AUS/SHARKBAY, BIOS FBKT72AUS 01/26/2014
[ 5498.742532] task: ffff880118f4ca80 ti: ffff880118f52000 task.ti: ffff880118f52000
[ 5498.753722] RIP: 0010:[<ffffffff81189111>] [<ffffffff81189111>] kfree+0x91/0x220
[ 5498.764966] RSP: 0018:ffff880118f53cf0 EFLAGS: 00010046
[ 5498.773911] RAX: ffffea000005b150 RBX: ffff880114fc4110 RCX: ffffffffffffffe8
[ 5498.784831] RDX: ffffea000005b150 RSI: 0000000000000000 RDI: ffffffff81a06ba0
[ 5498.795763] RBP: ffff880118f53d20 R08: 0000000000000000 R09: 0000000000000010
[ 5498.806617] R10: ffffea0003ceed10 R11: ff00007ffe000000 R12: ffffffff81a06ba0
[ 5498.817550] R13: 0000000000000286 R14: 0000000001a06ba0 R15: 0000000000000000
[ 5498.828515] FS: 0000000000000000(0000) GS:ffff88011ea40000(0000) knlGS:0000000000000000
[ 5498.840520] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5498.849929] CR2: 000000000000006c CR3: 000000000180e000 CR4: 00000000001407e0
[ 5498.860847] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5498.871762] DR3: 000000000072a000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
[ 5498.882707] Stack:
[ 5498.888160] 0000000000000001 ffff880114fc4110 ffff880114fc2940 ffff880114fc4930
[ 5498.899533] 000000000000000a ffff8801181a2820 ffff880118f53d30 ffffffff8110526e
[ 5498.910958] ffff880118f53d48 ffffffff810620ca ffff880114fc4110 ffff880118f53d68
[ 5498.922378] Call Trace:
[ 5498.928288] [<ffffffff8110526e>] ftrace_graph_exit_task+0x1e/0x20
[ 5498.938203] [<ffffffff810620ca>] free_task+0x3a/0x60
[ 5498.946908] [<ffffffff8106217f>] __put_task_struct+0x8f/0x130
[ 5498.956409] [<ffffffff81065ff8>] delayed_put_task_struct+0x78/0x80
[ 5498.966421] [<ffffffff810c4ec6>] rcu_process_callbacks+0x1e6/0x580
[ 5498.976348] [<ffffffff8106a5a5>] __do_softirq+0xf5/0x290
[ 5498.985233] [<ffffffff8106a770>] run_ksoftirqd+0x30/0x50
[ 5498.994077] [<ffffffff8108eedf>] smpboot_thread_fn+0xff/0x1b0
[ 5499.003284] [<ffffffff8108ede0>] ? SyS_setgroups+0x1a0/0x1a0
[ 5499.012310] [<ffffffff81087d92>] kthread+0xd2/0xf0
[ 5499.020314] [<ffffffff81087cc0>] ? kthread_create_on_node+0x180/0x180
[ 5499.030054] [<ffffffff81568cbc>] ret_from_fork+0x7c/0xb0
[ 5499.038575] [<ffffffff81087cc0>] ? kthread_create_on_node+0x180/0x180
[ 5499.048264] Code: 00 48 c1 e2 06 48 29 c2 48 b8 00 00 00 00 00 ea ff ff 48 01 c2 48 8b 02 f6 c4 80 0f 85 03 01 00 00 48 89 d0 4c 8b 78 30 4c 89 e7 <49> 63 77 6c e8 16 42 19 00 65 8b 04 25 c4 b0 00 00 83 3d 7f b9
[ 5499.076043] RIP [<ffffffff81189111>] kfree+0x91/0x220
[ 5499.084437] RSP <ffff880118f53cf0>
[ 5499.090962] CR2: 000000000000006c
[ 5499.305409] ---[ end trace 9fd1de8fe3e4eea1 ]---
[ 5499.313185] Kernel panic - not syncing: Fatal exception in interrupt
[ 5499.322890] Dumping ftrace buffer:
[ 5499.329430] (ftrace buffer empty)
[ 5499.336136] Kernel Offset: 0x0 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffff9fffffff)
[ 5499.350088] drm_kms_helper: panic occurred, switching back to text console
[ 5499.360490] ------------[ cut here ]------------
[ 5499.368379] WARNING: CPU: 1 PID: 13 at arch/x86/kernel/smp.c:124 native_smp_send_reschedule+0x5d/0x60()
[ 5499.381493] Modules linked in: nfsd auth_rpcgss oid_registry nfs_acl nfs lockd fscache sunrpc fuse snd_hda_codec_hdmi x86_pkg_temp_thermal intel_powerclamp coretemp i915 kvm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel drm_kms_helper snd_hda_codec_realtek tpm_tis tpm snd_hda_codec_generic aesni_intel aes_x86_64 drm lrw mei_me mei parport_pc gf128mul iTCO_wdt iTCO_vendor_support battery video parport i2c_algo_bit i2c_i801 snd_hda_intel snd_hda_codec snd_hwdep snd_pcm wmi psmouse pcspkr i2c_core button processor serio_raw snd_seq snd_seq_device lpc_ich snd_timer glue_helper ablk_helper evdev cryptd snd mfd_core soundcore sg sd_mod sr_mod crc_t10dif cdrom crct10dif_common hid_generic usbhid hid ehci_pci ahci xhci_hcd e1000e ehci_hcd libahci libata ptp crc32c_intel usbcore scsi_mod pps_core usb_common fan thermal thermal_sys
[ 5499.482836] CPU: 1 PID: 13 Comm: ksoftirqd/1 Tainted: G D W 3.14.0+ #14
[ 5499.494069] Hardware name: LENOVO 10AM000AUS/SHARKBAY, BIOS FBKT72AUS 01/26/2014
[ 5499.505369] 0000000000000009 ffff88011ea43d98 ffffffff8155a210 0000000000000000
[ 5499.516960] ffff88011ea43dd0 ffffffff810651ad 0000000000000000 ffff88011ea14340
[ 5499.528525] 0000000000000001 0000000000000001 000000000000e288 ffff88011ea43de0
[ 5499.540031] Call Trace:
[ 5499.546011] <IRQ> [<ffffffff8155a210>] dump_stack+0x45/0x56
[ 5499.555610] [<ffffffff810651ad>] warn_slowpath_common+0x7d/0xa0
[ 5499.565324] [<ffffffff8106528a>] warn_slowpath_null+0x1a/0x20
[ 5499.574798] [<ffffffff81043d1d>] native_smp_send_reschedule+0x5d/0x60
[ 5499.584855] [<ffffffff810a3da2>] trigger_load_balance+0x142/0x1b0
[ 5499.594543] [<ffffffff810968b7>] scheduler_tick+0x97/0xd0
[ 5499.603446] [<ffffffff81073730>] update_process_times+0x60/0x70
[ 5499.612886] [<ffffffff810d0485>] tick_sched_handle.isra.16+0x25/0x60
[ 5499.622822] [<ffffffff810d0501>] tick_sched_timer+0x41/0x60
[ 5499.631807] [<ffffffff8108ae03>] __run_hrtimer+0x83/0x1e0
[ 5499.640649] [<ffffffff810d04c0>] ? tick_sched_handle.isra.16+0x60/0x60
[ 5499.650677] [<ffffffff8108b637>] hrtimer_interrupt+0xf7/0x240
[ 5499.659808] [<ffffffff81046617>] local_apic_timer_interrupt+0x37/0x60
[ 5499.669745] [<ffffffff8156b16f>] smp_apic_timer_interrupt+0x3f/0x60
[ 5499.679487] [<ffffffff81569add>] apic_timer_interrupt+0x6d/0x80
[ 5499.688859] <EOI> [<ffffffff81556dda>] ? panic+0x196/0x1d7
[ 5499.697881] [<ffffffff81556d41>] ? panic+0xfd/0x1d7
[ 5499.706063] [<ffffffff810b89b8>] ? console_unlock+0x1e8/0x3f0
[ 5499.715181] [<ffffffff81561273>] oops_end+0xd3/0xe0
[ 5499.723480] [<ffffffff815567ee>] no_context+0x27e/0x28b
[ 5499.732094] [<ffffffff8155686e>] __bad_area_nosemaphore+0x73/0x1ca
[ 5499.741773] [<ffffffff815569d8>] bad_area_nosemaphore+0x13/0x15
[ 5499.751080] [<ffffffff81563a21>] __do_page_fault+0x91/0x520
[ 5499.760053] [<ffffffff81098026>] ? try_to_wake_up+0x1e6/0x290
[ 5499.769148] [<ffffffff81140617>] ? free_one_page+0x317/0x320
[ 5499.778152] [<ffffffff81563ed2>] do_page_fault+0x22/0x30
[ 5499.786757] [<ffffffff815606c8>] page_fault+0x28/0x30
[ 5499.795141] [<ffffffff81189111>] ? kfree+0x91/0x220
[ 5499.803349] [<ffffffff8110526e>] ftrace_graph_exit_task+0x1e/0x20
[ 5499.812773] [<ffffffff810620ca>] free_task+0x3a/0x60
[ 5499.821011] [<ffffffff8106217f>] __put_task_struct+0x8f/0x130
[ 5499.830107] [<ffffffff81065ff8>] delayed_put_task_struct+0x78/0x80
[ 5499.839681] [<ffffffff810c4ec6>] rcu_process_callbacks+0x1e6/0x580
[ 5499.849249] [<ffffffff8106a5a5>] __do_softirq+0xf5/0x290
[ 5499.857891] [<ffffffff8106a770>] run_ksoftirqd+0x30/0x50
[ 5499.866511] [<ffffffff8108eedf>] smpboot_thread_fn+0xff/0x1b0
[ 5499.875561] [<ffffffff8108ede0>] ? SyS_setgroups+0x1a0/0x1a0
[ 5499.884545] [<ffffffff81087d92>] kthread+0xd2/0xf0
[ 5499.892585] [<ffffffff81087cc0>] ? kthread_create_on_node+0x180/0x180
[ 5499.902385] [<ffffffff81568cbc>] ret_from_fork+0x7c/0xb0
[ 5499.910841] [<ffffffff81087cc0>] ? kthread_create_on_node+0x180/0x180
[ 5499.920469] ---[ end trace 9fd1de8fe3e4eea2 ]---
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: perf_fuzzer: BUG in kfree() in ftrace_graph_exit_task
2014-03-31 16:23 perf_fuzzer: BUG in kfree() in ftrace_graph_exit_task Vince Weaver
@ 2014-03-31 16:32 ` Thomas Gleixner
2014-03-31 16:47 ` Steven Rostedt
2014-03-31 17:04 ` Vince Weaver
0 siblings, 2 replies; 4+ messages in thread
From: Thomas Gleixner @ 2014-03-31 16:32 UTC (permalink / raw)
To: Vince Weaver; +Cc: LKML, Peter Zijlstra, Ingo Molnar, Steven Rostedt
On Mon, 31 Mar 2014, Vince Weaver wrote:
>
> This turned up with the perf_fuzzer, haswell, 3.14.
>
> I'm not sure if this is related to the other object corruption bug I am
> seeing. The sympstoms are similar (BUG when dereferencing low invalid
> kernel address) but this time the hrtimer code is not involved at all.
>
> This isn't reproducible, that is if I re-run the fuzzer with the same
> random seed after reboot the bug doesn't trigger.
>
>
> [ 5498.573458] BUG: unable to handle kernel NULL pointer dereference at 000000000000006c
> [ 5498.585181] IP: [<ffffffff81189111>] kfree+0x91/0x220
> [ 5498.593887] PGD 0
> [ 5498.599365] Oops: 0000 [#1] SMP
> [ 5498.606127] Dumping ftrace buffer:
> [ 5498.612973] (ftrace buffer empty)
> [ 5498.619868] Modules linked in: nfsd auth_rpcgss .....
> [ 5498.720303] CPU: 1 PID: 13 Comm: ksoftirqd/1 Tainted: G W 3.14.0+ #14
It's already tainted with W, so there was a warning before that
crash. It would be interesting to see that as well.
Thanks,
tglx
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: perf_fuzzer: BUG in kfree() in ftrace_graph_exit_task
2014-03-31 16:32 ` Thomas Gleixner
@ 2014-03-31 16:47 ` Steven Rostedt
2014-03-31 17:04 ` Vince Weaver
1 sibling, 0 replies; 4+ messages in thread
From: Steven Rostedt @ 2014-03-31 16:47 UTC (permalink / raw)
To: Thomas Gleixner; +Cc: Vince Weaver, LKML, Peter Zijlstra, Ingo Molnar
On Mon, 31 Mar 2014 18:32:40 +0200 (CEST)
Thomas Gleixner <tglx@linutronix.de> wrote:
> On Mon, 31 Mar 2014, Vince Weaver wrote:
> >
> > This turned up with the perf_fuzzer, haswell, 3.14.
> >
> > I'm not sure if this is related to the other object corruption bug I am
> > seeing. The sympstoms are similar (BUG when dereferencing low invalid
> > kernel address) but this time the hrtimer code is not involved at all.
> >
> > This isn't reproducible, that is if I re-run the fuzzer with the same
> > random seed after reboot the bug doesn't trigger.
> >
> >
> > [ 5498.573458] BUG: unable to handle kernel NULL pointer dereference at 000000000000006c
> > [ 5498.585181] IP: [<ffffffff81189111>] kfree+0x91/0x220
> > [ 5498.593887] PGD 0
> > [ 5498.599365] Oops: 0000 [#1] SMP
> > [ 5498.606127] Dumping ftrace buffer:
> > [ 5498.612973] (ftrace buffer empty)
> > [ 5498.619868] Modules linked in: nfsd auth_rpcgss .....
> > [ 5498.720303] CPU: 1 PID: 13 Comm: ksoftirqd/1 Tainted: G W 3.14.0+ #14
>
> It's already tainted with W, so there was a warning before that
> crash. It would be interesting to see that as well.
>
Agreed, as the crash points to some pretty straight forward code. If
something happened to a task, it can corrupt the task ret_stack pointer
which would cause ftrace_graph_exit_task() to crash too.
-- Steve
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: perf_fuzzer: BUG in kfree() in ftrace_graph_exit_task
2014-03-31 16:32 ` Thomas Gleixner
2014-03-31 16:47 ` Steven Rostedt
@ 2014-03-31 17:04 ` Vince Weaver
1 sibling, 0 replies; 4+ messages in thread
From: Vince Weaver @ 2014-03-31 17:04 UTC (permalink / raw)
To: Thomas Gleixner
Cc: Vince Weaver, LKML, Peter Zijlstra, Ingo Molnar, Steven Rostedt
On Mon, 31 Mar 2014, Thomas Gleixner wrote:
> It's already tainted with W, so there was a warning before that
> crash. It would be interesting to see that as well.
here it is. This particular warning combo gets triggered fairly often
with fuzzing. Hadn't bothered trying to track it down yet, especially
as I just spent a long time getting the :1076 warning fixed for 3.14 only
to see it come back from a different angle.
[ 4362.748859] ------------[ cut here ]------------
[ 4362.753905] WARNING: CPU: 3 PID: 599 at arch/x86/kernel/cpu/perf_event.c:1158 x86_pmu_stop+0xb9/0xd0()
[ 4362.763903] Modules linked in: nfsd auth_rpcgss oid_registry nfs_acl nfs lockd fscache sunrpc fuse snd_hda_codec_hdmi x86_pkg_temp_thermal intel_powerclamp coretemp i915 kvm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel drm_kms_helper snd_hda_codec_realtek tpm_tis tpm snd_hda_codec_generic aesni_intel aes_x86_64 drm lrw mei_me mei parport_pc gf128mul iTCO_wdt iTCO_vendor_support battery video parport i2c_algo_bit i2c_i801 snd_hda_intel snd_hda_codec snd_hwdep snd_pcm wmi psmouse pcspkr i2c_core button processor serio_raw snd_seq snd_seq_device lpc_ich snd_timer glue_helper ablk_helper evdev cryptd snd mfd_core soundcore sg sd_mod sr_mod crc_t10dif cdrom crct10dif_common hid_generic usbhid hid ehci_pci ahci xhci_hcd e1000e ehci_hcd libahci libata ptp crc32c_intel usbcore scsi_mod pps_core usb_common fan thermal thermal_sys
[ 4362.845450] CPU: 3 PID: 599 Comm: perf_fuzzer Not tainted 3.14.0+ #14
[ 4362.852382] Hardware name: LENOVO 10AM000AUS/SHARKBAY, BIOS FBKT72AUS 01/26/2014
[ 4362.860349] 0000000000000009 ffff88011eac3cd8 ffffffff8155a210 0000000000000000
[ 4362.868360] ffff88011eac3d10 ffffffff810651ad ffff88011eacca60 ffff880116b4a400
[ 4362.876390] 0000000000000004 ffff880116b4a400 ffff880118689b2c ffff88011eac3d20
[ 4362.884429] Call Trace:
[ 4362.887020] <IRQ> [<ffffffff8155a210>] dump_stack+0x45/0x56
[ 4362.893271] [<ffffffff810651ad>] warn_slowpath_common+0x7d/0xa0
[ 4362.899704] [<ffffffff8106528a>] warn_slowpath_null+0x1a/0x20
[ 4362.905954] [<ffffffff810292c9>] x86_pmu_stop+0xb9/0xd0
[ 4362.911667] [<ffffffff8102932a>] x86_pmu_del+0x4a/0x130
[ 4362.917370] [<ffffffff8112c242>] event_sched_out.isra.75+0x102/0x1f0
[ 4362.924239] [<ffffffff8112cf54>] group_sched_in+0x154/0x1e0
[ 4362.930299] [<ffffffff8112d0ee>] ctx_sched_in+0x10e/0x1d0
[ 4362.936166] [<ffffffff8112d210>] perf_event_sched_in+0x60/0x90
[ 4362.942446] [<ffffffff8112d7d3>] perf_cpu_hrtimer_handler+0xd3/0x1e0
[ 4362.949331] [<ffffffff8108ae03>] __run_hrtimer+0x83/0x1e0
[ 4362.955221] [<ffffffff8112d700>] ? perf_event_context_sched_in+0xc0/0xc0
[ 4362.962511] [<ffffffff8108b637>] hrtimer_interrupt+0xf7/0x240
[ 4362.968734] [<ffffffff81046617>] local_apic_timer_interrupt+0x37/0x60
[ 4362.975790] [<ffffffff8156b1d6>] smp_trace_apic_timer_interrupt+0x46/0xb9
[ 4362.983146] [<ffffffff81569b5d>] trace_apic_timer_interrupt+0x6d/0x80
[ 4362.990105] <EOI> [<ffffffff81568d6d>] ? system_call_fastpath+0x1a/0x1f
[ 4362.997432] ---[ end trace 9fd1de8fe3e4ee9f ]---
[ 4363.002315] ------------[ cut here ]------------
[ 4363.007251] WARNING: CPU: 3 PID: 599 at arch/x86/kernel/cpu/perf_event.c:1076 x86_pmu_start+0xc6/0x100()
[ 4363.017272] Modules linked in: nfsd auth_rpcgss oid_registry nfs_acl nfs lockd fscache sunrpc fuse snd_hda_codec_hdmi x86_pkg_temp_thermal intel_powerclamp coretemp i915 kvm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel drm_kms_helper snd_hda_codec_realtek tpm_tis tpm snd_hda_codec_generic aesni_intel aes_x86_64 drm lrw mei_me mei parport_pc gf128mul iTCO_wdt iTCO_vendor_support battery video parport i2c_algo_bit i2c_i801 snd_hda_intel snd_hda_codec snd_hwdep snd_pcm wmi psmouse pcspkr i2c_core button processor serio_raw snd_seq snd_seq_device lpc_ich snd_timer glue_helper ablk_helper evdev cryptd snd mfd_core soundcore sg sd_mod sr_mod crc_t10dif cdrom crct10dif_common hid_generic usbhid hid ehci_pci ahci xhci_hcd e1000e ehci_hcd libahci libata ptp crc32c_intel usbcore scsi_mod pps_core usb_common fan thermal thermal_sys
[ 4363.097857] CPU: 3 PID: 599 Comm: perf_fuzzer Tainted: G W 3.14.0+ #14
[ 4363.106961] Hardware name: LENOVO 10AM000AUS/SHARKBAY, BIOS FBKT72AUS 01/26/2014
[ 4363.115942] 0000000000000009 ffff88011eac3dd0 ffffffff8155a210 0000000000000000
[ 4363.125052] ffff88011eac3e08 ffffffff810651ad ffff880117497400 ffff88011eacca60
[ 4363.134083] 0000000000000000 ffff88011eaccc84 0000000000000001 ffff88011eac3e18
[ 4363.143127] Call Trace:
[ 4363.146714] <IRQ> [<ffffffff8155a210>] dump_stack+0x45/0x56
[ 4363.153920] [<ffffffff810651ad>] warn_slowpath_common+0x7d/0xa0
[ 4363.161359] [<ffffffff8106528a>] warn_slowpath_null+0x1a/0x20
[ 4363.168548] [<ffffffff8102a006>] x86_pmu_start+0xc6/0x100
[ 4363.175354] [<ffffffff8102a7b5>] x86_pmu_enable+0x295/0x310
[ 4363.182279] [<ffffffff8112c137>] perf_pmu_enable+0x27/0x30
[ 4363.189126] [<ffffffff8112d7df>] perf_cpu_hrtimer_handler+0xdf/0x1e0
[ 4363.196838] [<ffffffff8108ae03>] __run_hrtimer+0x83/0x1e0
[ 4363.203551] [<ffffffff8112d700>] ? perf_event_context_sched_in+0xc0/0xc0
[ 4363.211665] [<ffffffff8108b637>] hrtimer_interrupt+0xf7/0x240
[ 4363.218730] [<ffffffff81046617>] local_apic_timer_interrupt+0x37/0x60
[ 4363.226517] [<ffffffff8156b1d6>] smp_trace_apic_timer_interrupt+0x46/0xb9
[ 4363.234684] [<ffffffff81569b5d>] trace_apic_timer_interrupt+0x6d/0x80
[ 4363.242473] <EOI> [<ffffffff81568d6d>] ? system_call_fastpath+0x1a/0x1f
[ 4363.250604] ---[ end trace 9fd1de8fe3e4eea0 ]---
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2014-03-31 17:02 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2014-03-31 16:23 perf_fuzzer: BUG in kfree() in ftrace_graph_exit_task Vince Weaver
2014-03-31 16:32 ` Thomas Gleixner
2014-03-31 16:47 ` Steven Rostedt
2014-03-31 17:04 ` Vince Weaver
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