From: Kang Chen <void0red@gmail.com>
To: lenb@kernel.org
Cc: robert.moore@intel.com, rafael.j.wysocki@intel.com,
linux-acpi@vger.kernel.org,
acpica-devel@lists.linuxfoundation.org,
linux-kernel@vger.kernel.org, Kang Chen <void0red@gmail.com>
Subject: [PATCH] ACPICA: check null return of ACPI_ALLOCATE_ZEROED in acpi_db_display_objects
Date: Sun, 26 Feb 2023 14:19:12 +0800 [thread overview]
Message-ID: <20230226061912.2590679-1-void0red@gmail.com> (raw)
ACPI_ALLOCATE_ZEROED may fails, object_info might be null and will
cause null pointer dereference later.
Signed-off-by: Kang Chen <void0red@gmail.com>
---
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
next reply other threads:[~2023-02-26 6:19 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-26 6:19 Kang Chen [this message]
2023-03-20 17:02 ` [PATCH] ACPICA: check null return of ACPI_ALLOCATE_ZEROED in acpi_db_display_objects Rafael J. Wysocki
2023-04-10 9:36 ` [PATCH v2] " Kang Chen
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