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arm64: Enable interrupts in the EL0 undef handler

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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>
This commit is contained in:
Catalin Marinas 2013-08-22 11:47:37 +01:00
parent 4370eec05a
commit 2600e130b3
1 changed files with 2 additions and 0 deletions
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2
arch/arm64/kernel/entry.S
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@ -476,6 +476,8 @@ el0_undef:
* Undefined instruction * Undefined instruction
*/ */
mov x0, sp mov x0, sp
// enable interrupts before calling the main handler
enable_irq
b do_undefinstr b do_undefinstr
el0_dbg: el0_dbg:
/* /*