[lkml]   [2010]   [Sep]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [stable] [tip:x86/urgent] x86: Add memory modify constraints to xchg() and cmpxchg()
Hello, does not boot on my HP Compaq nx7300. I bisected it to this patch:

On Mon, Aug 02, 2010 at 04:59:50PM -0700, Greg KH wrote:
> On Mon, Aug 02, 2010 at 04:51:27PM -0700, Jeremy Fitzhardinge wrote:
> > On 07/27/2010 10:33 PM, tip-bot for H. Peter Anvin wrote:
> > >Commit-ID: 113fc5a6e8c2288619ff7e8187a6f556b7e0d372
> > >Gitweb:
> > >Author: H. Peter Anvin<>
> > >AuthorDate: Tue, 27 Jul 2010 17:01:49 -0700
> > >Committer: H. Peter Anvin<>
> > >CommitDate: Tue, 27 Jul 2010 17:14:02 -0700
> > >
> > >x86: Add memory modify constraints to xchg() and cmpxchg()
> >
> > Here's the 2.6.32 version for stable.
> Thanks, I'll queue it up when it hits Linus's tree.

Here's a video of the crash:
With boot_delay=30, it sometimes just reboots and sometimes prints the trace.
Without it, it always prints the trace. The crash occurs during the
initialization of intel-agp (which explains why I can't reproduce it in qemu).
More details in the video.

The system boots and works just fine with with the patch reverted.
v2.6.36-rc3-185-gd56557a works fine as well, perhaps there were other fixes
that didn't get to stable (e.g. 4532b30).

I'm compiling the kernel with the latest gcc in Debian (-dumpversion says
4.4.5, dpkg reports 4:4.4.4-2). Shall I post dmesg/lspci as well?

Since I have an easy workaround and other things to do, I won't spend time
trying to backport those other fixes myself, but if you're going to fix this,
I will help with testing.

Tomáš Janoušek, a.k.a. Liskni_si,
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: 2010-09-09 22:29    [W:0.485 / U:2.492 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site