OK, the patch was broken because it changed regs->regs[31] before the
setup_sigcontext.  I think this one actually fixes a problem instead of
introducing one.  :-)  Somebody sent the 32-bit part of the patch around
a long time ago, but it doesn't seem to have gotten into CVS yet.

Kip

Kip Walker wrote:
> 
> It looks like the RA setup by setup_frame and setup_rt_frame in
> arch/mips64/kernel/signal.c and signal32.c can be wrong.  Same for
> arch/mips/kernel/signal.c
> 
> signal32.c, 32-bit signal.c: sa_restorer is overriden
> signal.c: regs->regs[31] is pointed at the sigframe's code, even though
> there isn't code in the frame, and a comment says that sa_restorer is
> always used.
> 
> Patch for 2.4 attached.
>