amd64/135014: [padlock] Using padlock(4) in 8-current triggers "fpudna in kernel mode!" warnings

Kostik Belousov kostikbel at gmail.com
Sat Apr 24 12:20:11 UTC 2010


On Sat, Apr 24, 2010 at 09:08:32AM +0100, Bruce Cran wrote:
> On Thursday 22 April 2010 19:04:58 Bruce Cran wrote:
> > On Monday 05 April 2010 16:22:36 Bruce Cran wrote:
> > > On Monday 05 April 2010 15:15:08 Michael Moll wrote:
> > > > the patch from
> > > > http://people.freebsd.org/~kib/misc/kern_fpu.2.patch
> > > > fixes this problem for me.
> > > 
> > > The patch fixes the problem on my i386 mini-iTX system too.
> > 
> > I don't know if it's related, but I've been having regular crashes on the
> > same box since applying the patch. Sometimes it runs for 12 hours, other
> > times only for a few minutes.
> 
> I had thought the dumps were being corrupted but taking another look I've 
> found the machine started generating core.txt files a couple of days ago which 
> confirmed the crashes happening in fpu_kern_leave. I've built a kernel with 
> the kern_fpu.3.patch and the machine has survived lots of network and disk 
> traffic, which would normally have caused a crash.

You still neglected to show me the _actual_ error, with backtrace,
that happen.
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