From: Vince Weaver <vincent.weaver@maine.edu>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Vince Weaver <vincent.weaver@maine.edu>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@kernel.org>,
linux-kernel@vger.kernel.org,
Steven Rostedt <rostedt@goodmis.org>
Subject: Re: [perf] more perf_fuzzer memory corruption
Date: Fri, 2 May 2014 13:06:52 -0400 (EDT) [thread overview]
Message-ID: <alpine.DEB.2.10.1405021304460.22556@vincent-weaver-1.umelst.maine.edu> (raw)
In-Reply-To: <20140502154217.GW11096@twins.programming.kicks-ass.net>
On Fri, 2 May 2014, Peter Zijlstra wrote:
>
> Can you give this a spin?
>
> ---
> Subject: perf: Fix race in removing an event
> From: Peter Zijlstra <peterz@infradead.org>
> Date: Fri May 2 16:56:01 CEST 2014
Nope, still shows the bug pretty quickly:
[ 210.411542] ------------[ cut here ]------------
[ 210.416638] WARNING: CPU: 7 PID: 2646 at kernel/events/core.c:3232 __free_event+0x93/0xa0()
[ 210.425777] Modules linked in: fuse snd_hda_codec_realtek snd_hda_codec_hdmi snd_hda_codec_generic x86_pkg_temp_thermal intel_powerclamp coretemp kvm snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep snd_pcm i915 crct10dif_pclmul crc32_pclmul snd_seq snd_timer ghash_clmulni_intel snd_seq_device aesni_intel aes_x86_64 snd lrw gf128mul ppdev glue_helper soundcore evdev drm_kms_helper iTCO_wdt drm i2c_algo_bit iTCO_vendor_support mei_me mei psmouse ablk_helper cryptd parport_pc i2c_i801 i2c_core tpm_tis battery lpc_ich mfd_core wmi parport serio_raw tpm pcspkr button processor video sd_mod sr_mod crc_t10dif cdrom crct10dif_common ahci libahci ehci_pci e1000e libata ptp xhci_hcd crc32c_intel ehci_hcd usbcore scsi_mod pps_core usb_common fan thermal thermal_sys
[ 210.500288] CPU: 7 PID: 2646 Comm: perf_fuzzer Not tainted 3.15.0-rc1+ #101
[ 210.507740] Hardware name: LENOVO 10AM000AUS/SHARKBAY, BIOS FBKT72AUS 01/26/2014
[ 210.515703] 0000000000000009 ffff8800cdf03b78 ffffffff81649b70 0000000000000000
[ 210.523768] ffff8800cdf03bb0 ffffffff810646ad ffff880036ee9000 0000000000000000
[ 210.531931] ffff8800cdb00a10 ffff8800cdb23248 ffff880036ee92a0 ffff8800cdf03bc0
[ 210.539985] Call Trace:
[ 210.542647] [<ffffffff81649b70>] dump_stack+0x45/0x56
[ 210.548199] [<ffffffff810646ad>] warn_slowpath_common+0x7d/0xa0
[ 210.554644] [<ffffffff8106478a>] warn_slowpath_null+0x1a/0x20
[ 210.560916] [<ffffffff81133083>] __free_event+0x93/0xa0
[ 210.566679] [<ffffffff81133c6e>] _free_event+0xce/0x210
[ 210.572386] [<ffffffff81133f30>] put_event+0x180/0x1f0
[ 210.578004] [<ffffffff81133e20>] ? put_event+0x70/0x1f0
[ 210.583730] [<ffffffff81133fd7>] perf_release+0x17/0x20
[ 210.589443] [<ffffffff811b68cc>] __fput+0xdc/0x1e0
[ 210.594698] [<ffffffff811b6a1e>] ____fput+0xe/0x10
[ 210.599948] [<ffffffff81085137>] task_work_run+0xa7/0xe0
[ 210.605786] [<ffffffff81066d5c>] do_exit+0x2cc/0xa50
[ 210.611233] [<ffffffff81076949>] ? get_signal_to_deliver+0x249/0x650
[ 210.618186] [<ffffffff8106756c>] do_group_exit+0x4c/0xc0
[ 210.623995] [<ffffffff81076991>] get_signal_to_deliver+0x291/0x650
[ 210.630731] [<ffffffff81012438>] do_signal+0x48/0x990
[ 210.636246] [<ffffffff81655992>] ? do_page_fault+0x22/0x30
[ 210.642268] [<ffffffff81012df0>] do_notify_resume+0x70/0xa0
[ 210.648350] [<ffffffff81651ebc>] retint_signal+0x48/0x8c
[ 210.654207] ---[ end trace 55a1ac7c9a3f451c ]---
[ 212.567179] Slab corruption (Tainted: G W ): kmalloc-2048 start=ffff880036ee9000, len=2048
[ 212.576985] 040: 6b 6b 6b 6b 6b 6b 6b 6b a8 15 94 cf 00 88 ff ff kkkkkkkk........
next prev parent reply other threads:[~2014-05-02 17:03 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
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 ` Vince Weaver [this message]
2014-05-02 17:04 ` [perf] more perf_fuzzer memory corruption 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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