Re: RFC: Reproducible oops with lockdep on count_matching_names()

2007-11-05 Thread Christoph Lameter
On Mon, 5 Nov 2007, Michael Buesch wrote: > Hm, I don't really remember. Though, I usually have all almost kernel-hacking > options enabled. > I'll check and enable some more. slub_debug must be specified on the command line. Alternately switch on CONFIG_SLUB_DEBUG_ON in the .config to force it t

Re: RFC: Reproducible oops with lockdep on count_matching_names()

2007-11-05 Thread Michael Buesch
On Monday 05 November 2007 14:56:22 Pekka Enberg wrote: > Hi Michael, > > On Monday 05 November 2007 13:23:50 Pekka Enberg wrote: > > > Is CONFIG_DEBUG_SLAB enabled? Usually these kind of random corruptions > > > are caused by someone passing a bad pointer to kfree() or > > > kmem_cache_free(). >

Re: RFC: Reproducible oops with lockdep on count_matching_names()

2007-11-05 Thread Pekka Enberg
Hi Michael, On Monday 05 November 2007 13:23:50 Pekka Enberg wrote: > > Is CONFIG_DEBUG_SLAB enabled? Usually these kind of random corruptions > > are caused by someone passing a bad pointer to kfree() or > > kmem_cache_free(). On 11/5/07, Michael Buesch <[EMAIL PROTECTED]> wrote: > Yeah. > > Wha

Re: RFC: Reproducible oops with lockdep on count_matching_names()

2007-11-05 Thread Michael Buesch
On Monday 05 November 2007 13:23:50 Pekka Enberg wrote: > Hi Michael, > > On Sat, 2007-11-03 at 21:06 +0100, Michael Buesch wrote: > > Who is responsible for slab btw? > > I mean, someone should be interested in getting this bug fixed. :) > > When using slab I see random corruptions. I think relat

Re: RFC: Reproducible oops with lockdep on count_matching_names()

2007-11-05 Thread Pekka Enberg
Hi Michael, On Sat, 2007-11-03 at 21:06 +0100, Michael Buesch wrote: > Who is responsible for slab btw? > I mean, someone should be interested in getting this bug fixed. :) > When using slab I see random corruptions. I think related to rmmod, but > I'm not sure. I don't see this with slub. Is CON

Re: RFC: Reproducible oops with lockdep on count_matching_names()

2007-11-05 Thread Peter Zijlstra
On Sat, 2007-11-03 at 21:06 +0100, Michael Buesch wrote: > On Saturday 03 November 2007 20:58:09 Luis R. Rodriguez wrote: > > I was using SLAB and ran into other strange oops, as the one below, > > but after switching to SLUB, after Michael Buesch's suggestion that > > one went away... The lockdep

Re: RFC: Reproducible oops with lockdep on count_matching_names()

2007-11-03 Thread Michael Buesch
On Saturday 03 November 2007 20:58:09 Luis R. Rodriguez wrote: > I was using SLAB and ran into other strange oops, as the one below, > but after switching to SLUB, after Michael Buesch's suggestion that > one went away... The lockdep segfault is still present, however. Who is responsible for slab

Re: RFC: Reproducible oops with lockdep on count_matching_names()

2007-11-03 Thread Luis R. Rodriguez
On 11/2/07, Peter Zijlstra <[EMAIL PROTECTED]> wrote: > On Thu, 2007-11-01 at 19:26 -0400, Michael Wu wrote: > > On Thursday 01 November 2007 15:17:16 Luis R. Rodriguez wrote: > > > [EMAIL PROTECTED]:~/devel/wireless-2.6$ git-describe > > > v2.6.24-rc1-146-g2280253 > > > > > > So I hit segfault wit