From: Will Deacon <will.deacon@arm.com>
To: Vince Weaver <vincent.weaver@maine.edu>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Mark Rutland <Mark.Rutland@arm.com>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Ingo Molnar <mingo@redhat.com>, Paul Mackerras <paulus@samba.org>,
Arnaldo Carvalho de Melo <acme@ghostprotocols.net>,
"trinity@vger.kernel.org" <trinity@vger.kernel.org>
Subject: Re: perf,arm -- another (different) fuzzer oops
Date: Wed, 7 Aug 2013 23:31:29 +0100 [thread overview]
Message-ID: <20130807223129.GA17118@mudshark.cambridge.arm.com> (raw)
In-Reply-To: <alpine.DEB.2.10.1308071611290.14098@vincent-weaver-1.um.maine.edu>
On Wed, Aug 07, 2013 at 09:14:55PM +0100, Vince Weaver wrote:
> Hello
Hi Vince,
> I don't have time to come up with a test case right now, but I've
> applied the patch to fix the oops from two days ago, and re-ran
> my perf_fuzzer tool and it immediately came up with another issue on ARM.
> This is an ARM Pandaboard running 3.11-rc4 with the one-line
> oops fix from the other thread.
Thanks for continuing with the fuzzer -- looks like it's finding some real
issues here. Unfortunately, I've been unable to spot the issue from the
panic, so could you please share your .config, vmlinux and/or some
information about the system call parameters?
That should help in deciphering what exactly went wrong.
Cherrs,
Will
> [ 388.509063] Unable to handle kernel paging request at virtual address 73fd14cc
> [ 388.509063] pgd = eca6c000
> [ 388.519805] [73fd14cc] *pgd=00000000
> [ 388.523651] Internal error: Oops: 5 [#1] SMP ARM
> [ 388.528594] Modules linked in: snd_soc_omap_hdmi omapdss snd_soc_omap_abe_twl6040 snd_soc_twl6040 snd_soc_omap snd_soc_omap_hdmi_card snd_soc_omap_mcpdm snd_soc_omap_mcbsp snd_soc_core snd_compress regmap_spi snd_pcm snd_page_alloc snd_timer snd soundcore
> [ 388.551757] CPU: 1 PID: 2790 Comm: perf_fuzzer Not tainted 3.11.0-rc4 #6
> [ 388.559906] task: eddcab80 ti: ed892000 task.ti: ed892000
> [ 388.565643] PC is at armpmu_map_event+0x20/0x88
> [ 388.570495] LR is at armpmu_event_init+0x38/0x280
> [ 388.574981] pc : [<c001c3e4>] lr : [<c001c17c>] psr: 60000013
> [ 388.574981] sp : ed893e40 ip : ecececec fp : edfaec00
> [ 388.581878] r10: 00000000 r9 : 00000000 r8 : ed8c3ac0
> [ 388.593292] r7 : ed8c3b5c r6 : edfaec00 r5 : 00000000 r4 : 00000000
> [ 388.593292] r3 : 000000ff r2 : c0496144 r1 : c049611c r0 : edfaec00
> [ 388.607177] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user
> [ 388.614776] Control: 10c5387d Table: aca6c04a DAC: 00000015
> [ 388.614776] Process perf_fuzzer (pid: 2790, stack limit = 0xed892240)
> [ 388.621826] Stack: (0xed893e40 to 0xed894000)
> [ 388.632385] 3e40: 00000800 c001c17c 00000002 c008a748 00000001 00000000 00000000 c00bf078
> [ 388.634796] 3e60: 00000000 edfaee50 00000000 00000000 00000000 edfaec00 ed8c3ac0 edfaec00
> [ 388.634796] 3e80: 00000000 c073ffac ed893f20 c00bf180 00000001 00000000 c00bf078 ed893f20
> [ 388.652435] 3ea0: 00000000 ed8c3ac0 00000000 00000000 00000000 c0cb0818 eddcab80 c00bf440
> [ 388.667205] 3ec0: ed893f20 00000000 eddcab80 eca76800 00000000 eca76800 00000000 00000000
> [ 388.668487] 3ee0: 00000000 ec984c80 eddcab80 c00bfe68 00000000 00000000 00000000 00000080
> [ 388.684631] 3f00: 00000000 ed892000 00000000 ed892030 00000004 ecc7e3c8 ecc7e3c8 00000000
> [ 388.693328] 3f20: 00000000 00000048 ecececec 00000000 00000000 00000000 00000000 00000000
> [ 388.701843] 3f40: 00000000 00000000 00297810 00000000 00000000 00000000 00000000 00000000
> [ 388.701843] 3f60: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
> [ 388.719451] 3f80: 00000002 00000002 000103a4 00000002 0000016c c00128e8 ed892000 00000000
> [ 388.724212] 3fa0: 00090998 c0012700 00000002 000103a4 00090ab8 00000000 00000000 0000000f
> [ 388.731842] 3fc0: 00000002 000103a4 00000002 0000016c 00090ab0 00090ab8 000107a0 00090998
> [ 388.745574] 3fe0: bed92be0 bed92bd0 0000b785 b6e8f6d0 40000010 00090ab8 00000000 00000000
> [ 388.751831] [<c001c3e4>] (armpmu_map_event+0x20/0x88) from [<c001c17c>] (armpmu_event_init+0x38/0x280)
> [ 388.764221] [<c001c17c>] (armpmu_event_init+0x38/0x280) from [<c00bf180>] (perf_init_event+0x108/0x180)
> [ 388.764221] [<c00bf180>] (perf_init_event+0x108/0x180) from [<c00bf440>] (perf_event_alloc+0x248/0x40c)
> [ 388.764221] [<c00bf440>] (perf_event_alloc+0x248/0x40c) from [<c00bfe68>] (SyS_perf_event_open+0x4f4/0x8fc)
> [ 388.791839] [<c00bfe68>] (SyS_perf_event_open+0x4f4/0x8fc) from [<c0012700>] (ret_fast_syscall+0x0/0x48)
> [ 388.804718] Code: 0a000005 e3540004 0a000016 e3540000 (0791010c)
> [ 388.811248] ---[ end trace 89ea407225495d97 ]---
>
next prev parent reply other threads:[~2013-08-07 22:31 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-07 20:14 perf,arm -- another (different) fuzzer oops Vince Weaver
2013-08-07 22:31 ` Will Deacon [this message]
2013-08-07 23:18 ` Stephen Boyd
2013-08-08 2:03 ` Vince Weaver
2013-08-08 2:31 ` Vince Weaver
2013-08-08 2:53 ` Vince Weaver
2013-08-08 12:13 ` Will Deacon
2013-08-08 13:40 ` Vince Weaver
2013-08-08 12:09 ` Will Deacon
2013-08-08 17:44 ` Stephen Boyd
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20130807223129.GA17118@mudshark.cambridge.arm.com \
--to=will.deacon@arm.com \
--cc=Mark.Rutland@arm.com \
--cc=a.p.zijlstra@chello.nl \
--cc=acme@ghostprotocols.net \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@redhat.com \
--cc=paulus@samba.org \
--cc=trinity@vger.kernel.org \
--cc=vincent.weaver@maine.edu \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox