ARM: 8165/1: alignment: don't break misaligned NEON load/store

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commit 5ca918e5e3 upstream.

The alignment fixup incorrectly decodes faulting ARM VLDn/VSTn
instructions (where the optional alignment hint is given but incorrect)
as LDR/STR, leading to register corruption. Detect these and correctly
treat them as unhandled, so that userspace gets the fault it expects.

Reported-by: Simon Hosie <simon.hosie@arm.com>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Robin Murphy 2014-09-25 11:56:19 +01:00 • committed by Greg Kroah-Hartman

parent 32e8dec8c2

commit e5b83a046d

1 changed files with 3 additions and 0 deletions

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arch/arm/mm/alignment.c

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