Commit 5e27fb78 authored Jun 08, 2010 by Anfei Committed by Russell King Jun 08, 2010

ARM: 6166/1: Proper prefetch abort handling on pre-ARMv6



Instruction faults on pre-ARMv6 CPUs are interpreted as
a 'translation fault', but do_translation_fault doesn't
handle well if user mode trying to run instruction above
TASK_SIZE, and result in the infinite retry of that
instruction.

CC: <stable@kernel.org>
Signed-off-by: Anfei Zhou <anfei.zhou@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

parent 17ebba1f

arch/arm/mm/fault.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -393,6 +393,9 @@ do_translation_fault(unsigned long addr, unsigned int fsr,
		if (addr < TASK_SIZE)
		return do_page_fault(addr, fsr, regs);

		if (user_mode(regs))
		goto bad_area;

		index = pgd_index(addr);

		/*

Admin message