From: Vince Weaver <vincent.weaver@maine.edu>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Vince Weaver <vincent.weaver@maine.edu>,
Ingo Molnar <mingo@kernel.org>,
linux-kernel@vger.kernel.org,
Thomas Gleixner <tglx@linutronix.de>,
Steven Rostedt <rostedt@goodmis.org>
Subject: Re: [perf] more perf_fuzzer memory corruption
Date: Thu, 1 May 2014 11:50:54 -0400 (EDT) [thread overview]
Message-ID: <alpine.DEB.2.10.1405011147340.18142@vincent-weaver-1.umelst.maine.edu> (raw)
In-Reply-To: <20140501150948.GR11096@twins.programming.kicks-ass.net>
On Thu, 1 May 2014, Peter Zijlstra wrote:
>
> But yes please!
OK, sorry for the delay, had forgotten to re-enable -pg for perf in the
makefile when I applied your patch so had to re-build the kernel.
The trace is here:
www.eece.maine.edu/~vweaver/junk/pzbug.out.bz2
No analysis so hopefully it's good, I've got an event to go to in a few
minutes.
The messages:
[ 634.846367] ------------[ cut here ]------------
[ 634.851477] WARNING: CPU: 6 PID: 2915 at kernel/events/core.c:3232 __free_event+0x93/0xa0()
[ 634.860583] Modules linked in: fuse snd_hda_codec_hdmi x86_pkg_temp_thermal intel_powerclamp coretemp kvm crct10dif_pclmul snd_hda_codec_realtek snd_hda_codec_generic i915 drm_kms_helper crc32_pclmul snd_hda_intel snd_hda_controller ghash_clmulni_intel aesni_intel snd_hda_codec aes_x86_64 drm snd_hwdep evdev psmouse iTCO_wdt iTCO_vendor_support lrw gf128mul glue_helper snd_pcm pcspkr serio_raw i2c_i801 ablk_helper tpm_tis parport_pc parport cryptd snd_seq snd_timer snd_seq_device video battery button snd i2c_algo_bit i2c_core tpm mei_me mei lpc_ich mfd_core processor wmi soundcore sg sd_mod sr_mod crc_t10dif crct10dif_common cdrom ehci_pci ahci xhci_hcd e1000e libahci ehci_hcd libata usbcore ptp crc32c_intel pps_core scsi_mod usb_common thermal fan thermal_sys
[ 634.935276] CPU: 6 PID: 2915 Comm: perf_fuzzer Not tainted 3.15.0-rc1+ #94
[ 634.942754] Hardware name: LENOVO 10AM000AUS/SHARKBAY, BIOS FBKT72AUS 01/26/2014
[ 634.950728] 0000000000000009 ffff8801174b7b78 ffffffff81649bf0 0000000000000000
[ 634.958795] ffff8801174b7bb0 ffffffff810646ad ffff8800cef05000 0000000000000000
[ 634.966855] ffff8800cd47be10 ffff880036c7b388 ffff8800cef052a0 ffff8801174b7bc0
[ 634.974858] Call Trace:
[ 634.977482] [<ffffffff81649bf0>] dump_stack+0x45/0x56
[ 634.983007] [<ffffffff810646ad>] warn_slowpath_common+0x7d/0xa0
[ 634.989447] [<ffffffff8106478a>] warn_slowpath_null+0x1a/0x20
[ 634.995674] [<ffffffff811330e3>] __free_event+0x93/0xa0
[ 635.001429] [<ffffffff81133cce>] _free_event+0xce/0x210
[ 635.007180] [<ffffffff81133f90>] put_event+0x180/0x1f0
[ 635.012796] [<ffffffff81133e80>] ? put_event+0x70/0x1f0
[ 635.018487] [<ffffffff81134037>] perf_release+0x17/0x20
[ 635.024228] [<ffffffff811b694c>] __fput+0xdc/0x1e0
[ 635.029457] [<ffffffff811b6a9e>] ____fput+0xe/0x10
[ 635.034719] [<ffffffff81085137>] task_work_run+0xa7/0xe0
[ 635.040524] [<ffffffff81066d5c>] do_exit+0x2cc/0xa50
[ 635.045978] [<ffffffff81076949>] ? get_signal_to_deliver+0x249/0x650
[ 635.052880] [<ffffffff8106756c>] do_group_exit+0x4c/0xc0
[ 635.058669] [<ffffffff81076991>] get_signal_to_deliver+0x291/0x650
[ 635.065384] [<ffffffff81012438>] do_signal+0x48/0x990
[ 635.070911] [<ffffffff8101f516>] ? ftrace_raw_event_sys_exit+0x56/0x80
[ 635.077994] [<ffffffff81012df0>] do_notify_resume+0x70/0xa0
[ 635.084059] [<ffffffff81651f3c>] retint_signal+0x48/0x8c
[ 635.089912] ---[ end trace bf0bdbfdb698177c ]---
[ 635.995839] Slab corruption (Tainted: G W ): kmalloc-2048 start=ffff8800cef05000, len=2048
[ 636.006669] 040: 6b 6b 6b 6b 6b 6b 6b 6b a8 75 90 17 01 88 ff ff kkkkkkkk.u......
[ 636.017593] Next obj: start=ffff8800cef05800, len=2048
[ 636.024510] 000: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 636.035462] 010: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
next prev parent reply other threads:[~2014-05-01 15:47 UTC|newest]
Thread overview: 81+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-15 21:37 [perf] more perf_fuzzer memory corruption Vince Weaver
2014-04-15 21:49 ` Thomas Gleixner
2014-04-16 3:21 ` Vince Weaver
2014-04-16 4:18 ` Vince Weaver
2014-04-16 14:15 ` Peter Zijlstra
2014-04-16 17:30 ` Vince Weaver
2014-04-16 17:43 ` Vince Weaver
2014-04-16 17:47 ` Peter Zijlstra
2014-04-17 9:48 ` Ingo Molnar
2014-04-17 11:45 ` Peter Zijlstra
2014-04-17 14:22 ` Ingo Molnar
2014-04-17 14:42 ` Vince Weaver
2014-04-17 14:54 ` Peter Zijlstra
2014-04-17 15:35 ` Vince Weaver
2014-04-18 14:45 ` Vince Weaver
2014-04-18 14:51 ` Vince Weaver
2014-04-18 15:23 ` Peter Zijlstra
2014-04-18 16:59 ` Peter Zijlstra
2014-04-18 17:15 ` Peter Zijlstra
2014-04-23 20:58 ` Vince Weaver
2014-04-25 2:51 ` Vince Weaver
2014-04-28 14:21 ` Vince Weaver
2014-04-28 19:38 ` Vince Weaver
2014-04-29 9:46 ` Peter Zijlstra
2014-04-29 18:21 ` Vince Weaver
2014-04-29 19:01 ` Peter Zijlstra
2014-04-29 20:59 ` Vince Weaver
2014-04-30 18:44 ` Peter Zijlstra
2014-04-30 21:08 ` Vince Weaver
2014-04-30 22:51 ` Thomas Gleixner
2014-05-01 10:26 ` Peter Zijlstra
2014-05-01 11:50 ` Peter Zijlstra
2014-05-01 12:35 ` Thomas Gleixner
2014-05-01 13:12 ` Peter Zijlstra
2014-05-01 13:29 ` Thomas Gleixner
2014-05-01 13:22 ` Vince Weaver
2014-05-01 14:07 ` Vince Weaver
2014-05-01 14:27 ` Vince Weaver
2014-05-01 15:09 ` Peter Zijlstra
2014-05-01 15:50 ` Vince Weaver [this message]
2014-05-01 16:31 ` Thomas Gleixner
2014-05-01 17:18 ` Vince Weaver
2014-05-01 18:49 ` Vince Weaver
2014-05-01 21:32 ` Vince Weaver
2014-05-02 11:15 ` Peter Zijlstra
2014-05-02 15:42 ` Peter Zijlstra
2014-05-02 16:22 ` Vince Weaver
2014-05-02 16:22 ` Peter Zijlstra
2014-05-02 16:43 ` Vince Weaver
2014-05-02 17:27 ` Peter Zijlstra
2014-05-02 17:46 ` Vince Weaver
2014-05-02 19:12 ` Thomas Gleixner
2014-05-02 20:15 ` Vince Weaver
2014-05-02 20:45 ` Thomas Gleixner
2014-05-03 2:32 ` Vince Weaver
2014-05-03 3:02 ` Vince Weaver
2014-05-03 7:33 ` Peter Zijlstra
2014-05-05 9:31 ` Peter Zijlstra
2014-05-05 16:00 ` Vince Weaver
2014-05-05 17:10 ` Vince Weaver
2014-05-05 17:14 ` Peter Zijlstra
2014-05-05 18:47 ` Vince Weaver
2014-05-05 19:36 ` Peter Zijlstra
2014-05-05 19:51 ` Vince Weaver
2014-05-06 1:06 ` Vince Weaver
2014-05-06 16:57 ` Vince Weaver
2014-05-07 16:45 ` Peter Zijlstra
2014-05-08 10:40 ` [tip:perf/core] perf: Fix perf_event_init_context() tip-bot for Peter Zijlstra
2014-05-05 17:29 ` [perf] more perf_fuzzer memory corruption Ingo Molnar
2014-05-06 4:51 ` Vince Weaver
2014-05-06 17:06 ` Vince Weaver
2014-05-07 19:12 ` Ingo Molnar
2014-05-07 19:11 ` Ingo Molnar
2014-05-08 10:40 ` [tip:perf/core] perf: Fix race in removing an event tip-bot for Peter Zijlstra
2014-05-02 17:06 ` [perf] more perf_fuzzer memory corruption Vince Weaver
2014-05-02 17:04 ` Peter Zijlstra
2014-04-29 19:26 ` Steven Rostedt
2014-04-29 8:52 ` Peter Zijlstra
2014-04-29 18:11 ` Vince Weaver
2014-04-29 19:21 ` Steven Rostedt
2014-04-28 17:48 ` Thomas Gleixner
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