Messages in this thread | | | Date | Thu, 12 Jun 2008 01:02:00 -0700 | From | Andrew Morton <> | Subject | Re: repeatable slab corruption with LTP msgctl08 |
| |
On Wed, 11 Jun 2008 23:34:49 -0700 Andrew Morton <akpm@linux-foundation.org> wrote:
> On Wed, 11 Jun 2008 22:13:24 -0700 Andrew Morton <akpm@linux-foundation.org> wrote: > > > Running current mainline on my old 2-way PIII. Distro is RH FC1. LTP > > version is ltp-full-20070228 (lots of retro-computing there). > > > > Config is at http://userweb.kernel.org/~akpm/config-vmm.txt > > > > > > ./testcases/bin/msgctl08 crashes after ten minutes or so: > > ah, it runs to completion in about ten seconds on 2.6.25, so it'll be > easy for someone to bisect it. > > What's that? Sigh. OK. I wasn't doing anything much anyway.
Oh drat. git-bisect tells me that this one-year-old msgctl08's execution time vastly increased when we added
commit f7bf3df8be72d98afa84f5ff183e14c1ba1e560d Author: Nadia Derbey <Nadia.Derbey@bull.net> Date: Tue Apr 29 01:00:39 2008 -0700
ipc: scale msgmni to the amount of lowmem
But we already knew that, and LTP got changed to fix it.
So I was wrong in assuming that the long-execution-time correlates with the slab-corruption bug.
And the slab corruption bug takes half an hour to reproduce and an unknown amount of time to not-reproduce. I don't think I'll be able to complete this before I disappear for over a week.
| |