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MIPS: Use force_sig when handling address errors.

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When init is started it is SIGNAL_UNKILLABLE.  If it were to get an
address error, we would try to send it SIGBUS, but it would be ignored
and the faulting instruction restarted.  This results in an endless
loop.

We need to use force_sig() instead so it will actually die and give us
some useful information.

Reported-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
David Daney 2009-05-05 12:49:47 -07:00 committed by Ralf Baechle
parent d0ce9a5a47
commit a6d5ff04e8
1 changed files with 3 additions and 3 deletions
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6
arch/mips/kernel/unaligned.c
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@ -482,19 +482,19 @@ static void emulate_load_store_insn(struct pt_regs *regs,
return;
die_if_kernel("Unhandled kernel unaligned access", regs);
send_sig(SIGSEGV, current, 1);
force_sig(SIGSEGV, current);
return;
sigbus:
die_if_kernel("Unhandled kernel unaligned access", regs);
send_sig(SIGBUS, current, 1);
force_sig(SIGBUS, current);
return;
sigill:
die_if_kernel("Unhandled kernel unaligned access or invalid instruction", regs);
send_sig(SIGILL, current, 1);
force_sig(SIGILL, current);
}
asmlinkage void do_ade(struct pt_regs *regs)