Commit 2600e130 authored Aug 22, 2013 by Catalin Marinas

arm64: Enable interrupts in the EL0 undef handler

do_undefinstr() has to be called with interrupts disabled since it may
read the instruction from the user address space which could lead to a
data abort and subsequent might_sleep() warning in do_page_fault().

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

parent 4370eec0

arch/arm64/kernel/entry.S

+2 −0

Original line number	Diff line number	Diff line
		@@ -476,6 +476,8 @@ el0_undef:
		* Undefined instruction
		*/
		mov x0, sp
		// enable interrupts before calling the main handler
		enable_irq
		b do_undefinstr
		el0_dbg:
		/*