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Commit f556868a authored by JP Abgrall's avatar JP Abgrall Committed by Dmitry Shmidt
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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: default avatarJP Abgrall <jpa@google.com>
parent 813f2675

arch/arm/mm/fault.c

+2 −2
Original line number Diff line number Diff line
@@ -273,10 +273,10 @@ do_page_fault(unsigned long addr, unsigned int fsr, struct pt_regs *regs) 
		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))