ACPICA: AML Parser: fix parse loop to correctly skip erroneous extended opcodes

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commit c64baa3a6f upstream.

AML opcodes come in two lengths: 1-byte opcodes and 2-byte, extended opcodes.
If an error occurs due to illegal opcodes during table load, the AML parser
needs to continue loading the table. In order to do this, it needs to skip
parsing of the offending opcode and operands associated with that opcode.

This change fixes the AML parse loop to correctly skip parsing of incorrect
extended opcodes. Previously, only the short opcodes were skipped correctly.

Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Cc: All applicable <stable@vger.kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Erik Schmauss 2018-10-17 14:20:51 -07:00 • committed by Greg Kroah-Hartman

parent 22083c028d

commit 8badf7c328

1 changed files with 13 additions and 1 deletions

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drivers/acpi/acpica/psloop.c

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