Messages in this thread | | | Date | Thu, 10 Jul 2008 15:30:19 -0400 | From | Jeff Dike <> | Subject | Re: UML kernel failed to start betvee 2.6.8-rc8 and current git sources |
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On Thu, Jul 10, 2008 at 08:09:59PM +0200, Toralf Förster wrote: > At Thursday 10 July 2008 18:35:15 Jeff Dike wrote : > > > What's the host? > > tfoerste@n22 ~ $ uname -a > Linux n22 2.6.25-gentoo-r6 #4 Thu Jul 10 19:49:36 CEST 2008 i686 Intel(R) Pentium(R) M processor 1700MHz GenuineIntel GNU/Linux > > BTW, this works fine and shows only the config : > n22 ~ # linux-v2.6.26-rc8-227 --showconfig > > whereas this failed: > > n22 ~ # linux-v2.6.26-rc9-56 --showconfig > Locating the bottom of the address space ... 0x0 > Locating the top of the address space ... 0xc0000000
OK, I believe you're seeing the same bug as Uli saw here:
http://marc.info/?l=linux-kernel&m=121011518003727&w=2
More precise symptoms are here:
http://marc.info/?l=linux-kernel&m=121011722806093&w=2
I never did figure that one out. I had the same kernel version, same toolchain, same everything as far as I could see, and I couldn't reproduce it, except with a binary that he gave me.
You're seeing it on i386, whereas he saw it on x86_64.
The underlying problem is that somehow the UML initcalls aren't being run, which is why you're seeing all zeros in the register dump.
If you bisect this, I bet you end up at the no-unit-at-a-time patch that he ended up at. And I have no idea what that has to do with anything.
Jeff
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