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Subject[PATCH v2] ACPICA: check null return of ACPI_ALLOCATE_ZEROED in acpi_db_display_objects
Date
From: Kang Chen <void0red@gmail.com>

ACPI_ALLOCATE_ZEROED may fails, object_info might be null and will
cause null pointer dereference later.

Link: https://github.com/acpica/acpica/commit/84b3752cfa0ce4b0ebecae5e193c937b8ed6e278
Signed-off-by: Kang Chen <void0red@gmail.com>
---
v2 -> v1: add a github link

drivers/acpi/acpica/dbnames.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/acpi/acpica/dbnames.c b/drivers/acpi/acpica/dbnames.c
index 3615e1a6e..b91155ea9 100644
--- a/drivers/acpi/acpica/dbnames.c
+++ b/drivers/acpi/acpica/dbnames.c
@@ -652,6 +652,9 @@ acpi_status acpi_db_display_objects(char *obj_type_arg, char *display_count_arg)
object_info =
ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_object_info));

+ if (!object_info)
+ return (AE_NO_MEMORY);
+
/* Walk the namespace from the root */

(void)acpi_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
--
2.34.1
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