Commit ecbab71c authored Jan 27, 2009 by Russell King Committed by Russell King Jan 28, 2009

[ARM] call undefined instruction exception handler with irqs enabled



Aaro says:
> With spinlock debugs enabled I get might_sleep() warnings when using
> ptrace.

tracked down to a missing enable_irq before calling do_undefinstr().

Reported-by: Aaro Koskinen <aaro.koskinen@nokia.com>
Tested-by: Aaro Koskinen <aaro.koskinen@nokia.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

parent 9ce8bb55

arch/arm/kernel/entry-armv.S

+1 −0

Original line number	Diff line number	Diff line
		@@ -650,6 +650,7 @@ ENTRY(fp_enter)
		no_fp: mov pc, lr

		__und_usr_unknown:
		enable_irq
		mov r0, sp
		adr lr, ret_from_exception
		b do_undefinstr

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