ANDROID: ARM: fault: assume no context when IRQs are disabled during data abort.
Bail out early if IRQs are disabled in do_page_fault or else
[14415.157266] BUG: sleeping function called from invalid context at arch/arm/mm/fault.c:301
Russell King's idea from
http://comments.gmane.org/gmane.linux.ports.arm.omap/59256
Signed-off-by: JP Abgrall <jpa@google.com>
diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c
index 3a2e678..217ddb2 100644
--- a/arch/arm/mm/fault.c
+++ b/arch/arm/mm/fault.c
@@ -273,10 +273,10 @@
local_irq_enable();
/*
- * If we're in an interrupt or have no user
+ * If we're in an interrupt, or have no irqs, or have no user
* context, we must not take the fault..
*/
- if (faulthandler_disabled() || !mm)
+ if (faulthandler_disabled() || irqs_disabled() || !mm)
goto no_context;
if (user_mode(regs))