[lkml]   [2007]   [Jan]   [31]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: Linux 2.6.20-rc7
On Wed, 31 Jan 2007 08:04:29 -0800 (PST)
Linus Torvalds <> wrote:

> On Wed, 31 Jan 2007, Pawe__ Sikora wrote:
> >
> > The 2.6.20-rcX have the same nasty bug as 2.6.19.x.
> >
> > [ an oops inside kmem_get_pages ]
> >
> Pabel, can you detail more exactly which kernels don't work, and which do?
> >From bugzilla:
> - 2.6.18.x does work
> - doesn't work.
> - what about plain 2.6.19?
> - can you please test some of the 2.6.19-rcX kernels? Especially
> 2.6.19-rc1 would be good to test.
> Since it apparently already happens in 2.6.19 (but it would be really good
> to know exactly when it starts), and considering _where_ it happens, I'd
> be inclined to blame commit d2e7b7d0: "fix potential stack overflow in
> mm/slab.c" by Suresh.
> When do_tune_cpucache() is called at bootup, I'm not sure how safe it is
> to do the kzalloc() thing.
> I've added a number of hopefully appropriate people to the Cc. Guys?
> Apparently it only happens with MEMORY_HOTPLUG (and possibly with just an
> SMP kernel on UP), which probably explains why it's been around without
> people really complaining very loudly.

I discussed this with Yasunori Goto <> (memory
hot-add developer):

"But this config uses CONFIG_MEMORY_HOTPLUG_RESERVE which is made by
Andi Kleen-san and I don't know very well around here. And, I couldn't
reproduce this trouble on my box."

I cannot reproduce it with Pawel's config either.

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2007-02-01 00:21    [W:0.167 / U:2.000 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site