Setup a signal frame.

[Carsten Langgaard <carstenl@mips.com>]

I have a question regarding the setup_frame function in
arch/mips/kernel/signal.c.

If the setup fails we send a SIGSEGV to the current process, but before
doing that we check if signr == SIGSEGV, and if so install the default
handler.
But isn't we sending a SIGSEGV signal, and therefore always should
install the default handler and not check if the original signal was
SIGSEGV ?

In kernel 2.2.12 we always used do_exit(SIGSEGV) if the setup failed,
why has this changed in the 2.4.0 kernel ?

/Carsten

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