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Commit f7d31a71 authored by Erik Kaneda's avatar Erik Kaneda Committed by Yongqiang Liu
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ACPICA: Disassembler: create buffer fields in ACPI_PARSE_LOAD_PASS1

mainline inclusion
from mainline-v5.6-rc1
commit 5ddbd771
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I5LBE7
CVE: NA

--------------------------------

ACPICA commit 29cc8dbc5463a93625bed87d7550a8bed8913bf4

create_buffer_field is a deferred op that is typically processed in
load pass 2. However, disassembly of control method contents walk the
parse tree with ACPI_PARSE_LOAD_PASS1 and AML_CREATE operators are
processed in a later walk. This is a problem when there is a control
method that has the same name as the AML_CREATE object. In this case,
any use of the name segment will be detected as a method call rather
than a reference to a buffer field. If this is detected as a method
call, it can result in a mal-formed parse tree if the control methods
have parameters.

This change in processing AML_CREATE ops earlier solves this issue by
inserting the named object in the ACPI namespace so that references
to this name would be detected as a name string rather than a method
call.

Link: https://github.com/acpica/acpica/commit/29cc8dbc


Reported-by: default avatarElia Geretto <elia.f.geretto@gmail.com>
Tested-by: default avatarElia Geretto <elia.f.geretto@gmail.com>
Signed-off-by: default avatarBob Moore <robert.moore@intel.com>
Signed-off-by: default avatarErik Kaneda <erik.kaneda@intel.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: default avatarXiongfeng Wang <wangxiongfeng2@huawei.com>
Reviewed-by: default avatarHanjun Guo <guohanjun@huawei.com>
Signed-off-by: default avatarYongqiang Liu <liuyongqiang13@huawei.com>
parent adc3530d
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