From: Erik Schmauss <erik.schmauss@intel.com>
To: linux-acpi@vger.kernel.org, rjw@rjwysocki.net
Cc: Erik Schmauss <erik.schmauss@intel.com>,
Bob Moore <robert.moore@intel.com>
Subject: [PATCH 7/8] ACPICA: Namespace: add check to avoid null pointer dereference
Date: Mon, 8 Apr 2019 13:42:29 -0700 [thread overview]
Message-ID: <20190408204230.4335-8-erik.schmauss@intel.com> (raw)
In-Reply-To: <20190408204230.4335-1-erik.schmauss@intel.com>
ACPICA commit 7586a625f9c34c3169efd88470192bf63119e31a
Some ACPICA userspace tools call acpi_ut_subsystem_shutdown() during
cleanup and dereference a null pointer when cleaning up the
namespace.
Link: https://github.com/acpica/acpica/commit/7586a625
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
---
drivers/acpi/acpica/nsalloc.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/acpi/acpica/nsalloc.c b/drivers/acpi/acpica/nsalloc.c
index 5470213b8e64..6eb63db72249 100644
--- a/drivers/acpi/acpica/nsalloc.c
+++ b/drivers/acpi/acpica/nsalloc.c
@@ -74,6 +74,10 @@ void acpi_ns_delete_node(struct acpi_namespace_node *node)
ACPI_FUNCTION_NAME(ns_delete_node);
+ if (!node) {
+ return_VOID;
+ }
+
/* Detach an object if there is one */
acpi_ns_detach_object(node);
--
2.17.2
next prev parent reply other threads:[~2019-04-08 20:52 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-08 20:42 [PATCH 0/8] ACPICA release 20190329 and 20190405 Erik Schmauss
2019-04-08 20:42 ` [PATCH 1/8] ACPICA: Rename nameseg copy macro for clarity Erik Schmauss
2019-04-08 20:42 ` [PATCH 2/8] ACPICA: Rename nameseg compare " Erik Schmauss
2019-04-08 20:42 ` [PATCH 3/8] ACPICA: Rename nameseg length macro/define " Erik Schmauss
2019-04-09 9:29 ` Rafael J. Wysocki
2019-04-11 18:36 ` Schmauss, Erik
2019-04-08 20:42 ` [PATCH 4/8] ACPICA: Namespace: remove address node from global list after method termination Erik Schmauss
2019-04-08 20:42 ` [PATCH 5/8] ACPICA: utilities: fix spelling of PCC to platform_comm_channel Erik Schmauss
2019-04-08 20:42 ` [PATCH 6/8] ACPICA: Update version to 20190329 Erik Schmauss
2019-04-08 20:42 ` Erik Schmauss [this message]
2019-04-08 20:42 ` [PATCH 8/8] ACPICA: Update version to 20190405 Erik Schmauss
2019-04-08 20:56 ` [PATCH 0/8] ACPICA release 20190329 and 20190405 Schmauss, Erik
2019-04-10 12:39 ` Rafael J. Wysocki
-- strict thread matches above, loose matches on Subject: below --
2019-04-08 20:36 Erik Schmauss
2019-04-08 20:36 ` [PATCH 7/8] ACPICA: Namespace: add check to avoid null pointer dereference Erik Schmauss
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