From: Jens Axboe <jens.axboe@oracle.com>
To: linux-btrace@vger.kernel.org
Subject: Re: segfault in "blkparse -s"?
Date: Sun, 18 May 2008 15:47:36 +0000 [thread overview]
Message-ID: <20080518154735.GF16538@kernel.dk> (raw)
In-Reply-To: <482F9A7D.3060001@cesmail.net>
On Sat, May 17 2008, M. Edward (Ed) Borasky wrote:
> Environment: Gentoo Linux 2.6.25 kernel, AMD Athlon64 X2 dual core, 4 GB
> of RAM, single disk drive sda, reiserfs filesystems.
>
> I started up blktrace with "blktrace -d /dev/sda". Version is
> $ blktrace -V
> blktrace version 0.99.3
>
> Then I recompiled php to generate some I/O. Then I stopped blktrace and
> ran blkparse. Version is
> $ blkparse -V
> blkparse version 0.99.3
>
> Both "blkparse sda" and "blkparse -t sda" run fine, but "blkparse -s
> sda" segfaults:
>
> $ blkparse -s sda > blkparse.out
> Segmentation fault
>
> It generates partial output before crashing.
>
> I'm planning to try this again under gdb to get a traceback. The Gentoo
> "btrace" package is sys-block/btrace-0.0.20071210202527 -- if this is
> too old, let me know and I'll install something more recent from the
> repositories.
Could you send me the blktrace output files so that I can reproduce?
You could try self-compiling
http://brick.kernel.dk/snaps/blktrace-git-latest.tar.gz
just to see if it reproduces in current HEAD.
--
Jens Axboe
next prev parent reply other threads:[~2008-05-18 15:47 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-18 2:54 segfault in "blkparse -s"? M. Edward (Ed) Borasky
2008-05-18 15:47 ` Jens Axboe [this message]
2008-05-18 18:54 ` Jens Axboe
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