[ARM] call undefined instruction exception handler with irqs enabled · ecbab71c52 - Gogs

[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>

Russell King 16 years ago

parent

9ce8bb55e3

commit

ecbab71c52

1 changed files with 1 additions and 0 deletions

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arch/arm/kernel/entry-armv.S
							 
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				@@ -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