metag/usercopy: Add missing fixups

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commit b884a190af upstream.

The rapf copy loops in the Meta usercopy code is missing some extable
entries for HTP cores with unaligned access checking enabled, where
faults occur on the instruction immediately after the faulting access.

Add the fixup labels and extable entries for these cases so that corner
case user copy failures don't cause kernel crashes.

Fixes: 373cd784d0 ("metag: Memory handling")
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-metag@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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James Hogan 2017-04-04 08:51:34 +01:00 • committed by Greg Kroah-Hartman

parent ce154d517a

commit a1db9b2c1b

1 changed files with 48 additions and 24 deletions

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arch/metag/lib/usercopy.c

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