Re: 2.6.18-rc6-mm1: GPF loop on early boot

Ingo Molnar
2006-09-11T05:26:10Z

btw., i dont think it's the early-bootup behavior of lockdep that causes
your oops. I think %gs somehow ended up being invalid upon pagefault
entry, well after bootup. Not sure why. Andi's patch just papers over
this i believe.

ah ... found it meanwhile: in the syscall exit path the PDA patches
restore the userspace %gs too early, trace_hardirqs_on() is called
_after_ the restoring of %gs. Will send a patch in a few minutes.

Ingo