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SubjectRe: Linus BK tree crashes with PANIC: INIT: segmentation violation

Linus Torvalds <> writes:

> > 1) PANIC: INIT: ...
> > 2) String of Oopses
> > 3) Working Tree.
> >
> > The changeover from 2-3 is approximately December 30 (see my previous
> > post).
> I was hoping for a exact changset, your post didn't seem to be 100% sure.

The 'String of oopses' was a red herring. It was fixed sometime in early
January. The PANIC: INIT: problem, however, is real, and was introduced
by the following ChangeSet on January 7:

D 1.972 03/01/07 10:08:55-08:00 15824 15815 2/0/1
P ChangeSet
C Move x86 signal handler return stub to the vsyscall page,
C and stop honoring the SA_RESTORER information.
C This will prepare us for alternate signal handler returns.

If I build a kernel WITH this changeset it fails; if I build a kernel
at 1.971 (bjorn_helgaas's i810/i830 AGP patches) the kernel works just

So, something in your changes to kernel/sysenter.c or kernel/signal.c
causes INIT to PANIC and fail.

So, what would you like me to test, now?


Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory
Member, MIT Student Information Processing Board (SIPB)
warlord@MIT.EDU PGP key available
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