Re: 2.6.23-rc1: BUG_ON in kmap_atomic_prot()

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On Tue, Jul 24, 2007 at 12:40:45AM +0400, Alexey Dobriyan wrote:
> > I had more complete info: http://article.gmane.org/gmane.linux.network/66966
> > 
> > You're using DEBUG_PAGEALLOC, but I was not, so I think we can rule that out.
> > 
> > I haven't worked out where that kmap_atomic() call is coming from yet. 
> > Both traces point up into the page allocator, but I _think_ that's stack
> > gunk.
> 
> Ahh, you suspect networking.
> 
> Here, setup is 2 cheap-ass 100Mb realtek 8139 NICs, one to campus network
> receiving ~20 junk packets per second, one gathering netconsole output
> and ssh to it, no conntracks and fancy stuff.
> 
> [reboots with cables physically unplugged]

OK, I run gdb recompile, cat(1) every file in /usr/portage (shitload of
small files) with both cables unplugged. It all went fine for ~5 minutes
after that it crashed exactly same way after 10 secs after plugging one
of them.

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