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ACPICA: Fix NULL pointer dereference in acpi_ev_address_space_dispatch()

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Cover a missed execution path with a new check.

Fixes: 0acf24ad7e ("ACPICA: Add support for PCC Opregion special context data")
Link: https://github.com/acpica/acpica/commit/f421dd9dd897
Signed-off-by: Alexey Simakov <bigalex934@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://patch.msgid.link/3030574.e9J7NaK4W3@rafael.j.wysocki
This commit is contained in:
Alexey Simakov 2026-01-14 13:20:17 +01:00 committed by Rafael J. Wysocki
parent ce04af0a1b
commit f851e03bce
1 changed files with 3 additions and 1 deletions
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4
drivers/acpi/acpica/evregion.c
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@ -163,7 +163,9 @@ acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj,
return_ACPI_STATUS(AE_NOT_EXIST);
}
if (region_obj->region.space_id == ACPI_ADR_SPACE_PLATFORM_COMM) {
if (field_obj
&& region_obj->region.space_id ==
ACPI_ADR_SPACE_PLATFORM_COMM) {
struct acpi_pcc_info *ctx =
handler_desc->address_space.context;