ACPICA: nsrepair: handle cases without a return value correctly

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[ Upstream commit ca843a4c79 ]

Previously acpi_ns_simple_repair() would crash if expected_btypes
contained any combination of ACPI_RTYPE_NONE with a different type,
e.g | ACPI_RTYPE_INTEGER because of slightly incorrect logic in the
!return_object branch, which wouldn't return AE_AML_NO_RETURN_VALUE
for such cases.

Found by Linux Verification Center (linuxtesting.org) with the SVACE
static analysis tool.

Link: https://github.com/acpica/acpica/pull/811
Fixes: 61db45ca21 ("ACPICA: Restore code that repairs NULL package elements in return values.")
Signed-off-by: Daniil Tatianin <d-tatianin@yandex-team.ru>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Daniil Tatianin 2023-01-07 02:53:08 +03:00 • committed by Greg Kroah-Hartman

parent 08fe086047

commit 3bab09d99c

1 changed files with 7 additions and 5 deletions

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drivers/acpi/acpica/nsrepair.c

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