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From: Dongsoo Nathaniel Kim <dongsoo.kim@gmail.com>
To: linux-perf-users@vger.kernel.org
Subject: perf terminates immediately with segfault in dmesg
Date: Wed, 27 Feb 2013 23:21:00 +0900	[thread overview]
Message-ID: <CAP+Vy9d8Yd7HoxvixS6oT+wow+rV2PzriKBqOw17VVFwTc0iNg@mail.gmail.com> (raw)

Hi,

I'm trying to profile kvm guest and host as well.
I checked out v3.8 vanilla kernel and built bundled perf tool.
(commit 19f949f52599ba7c3f67a5897ac6be14bfcb1200)

Here is my command line:
sudo perf kvm --host --guest --guestmount=/tmp/guestmount record -o
my.perf.data
(I mounted guest instance on /tmp/guestmount using sshfs)

and perf gets terminated immediately and no clue but segfault message in
dmesg:
[11618.130483] perf[39937]: segfault at 30 ip 00007fed26de1121 sp
00007fff0394c258 error 4 in libc-2.15.so[7fed26d58000+1b5000]

Any idea? Can too many processor core cause this problem?

BTW, I'm working on AMD 64core system..and found that perf tool doesn't
work perfectly with AMD opteron processor.

Cheers,

--
=
Dongsoo Nathaniel Kim
Linux kernel, media device S/W engineer / Ph.D Student
Dept. of Computer Science, KAIST
Real-time & Embedded Systems Lab.

             reply	other threads:[~2013-02-27 14:21 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-02-27 14:21 Dongsoo Nathaniel Kim [this message]
2013-02-27 16:17 ` perf terminates immediately with segfault in dmesg David Ahern
2013-02-28  1:22   ` Dongsoo Nathaniel Kim

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