Re: segfault in "blkparse -s"?

[Jens Axboe <jens.axboe@oracle.com>]

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