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Fix duplicate free for GATT service includes

PATCH In review Pavel Maltsev 2 participants 2 messages Nov 19, 2020 Bluetooth drivers

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PATCH 1/1 Fix duplicate free for GATT service includes

Objects in the service->includes queue are obtained via dbus_message_iter_get_basic call and according to the contract for the value is that it is returned by the reference and should not be freed thus we should make a copy.

This will fix the issue when the GATT service app is disconnected (reproduced with gatt-service included in bluez), bluetoothd is crashing:

bluetoothd: src/gatt-database.c:gatt_db_service_removed() Local GATT service removed
bluetoothd: src/adapter.c:adapter_service_remove() /org/bluez/hci0
bluetoothd: src/adapter.c:remove_uuid() sending remove uuid command for index 0
bluetoothd: src/sdpd-service.c:remove_record_from_server() Removing record with handle 0x10006
bluetoothd: src/gatt-database.c:proxy_removed_cb() Proxy removed - removing service: /service1 munmap_chunk(): invalid pointer

---
 src/gatt-database.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)
src/gatt-database.c +6 -1
index 6694a0174..90cc4bade 100644
@@ -1999,6 +1999,7 @@ static bool parse_includes(GDBusProxy *proxy, struct external_service *service)
 	DBusMessageIter iter;
 	DBusMessageIter array;
 	char *obj;
+	char *includes;
 	int type;
 
 	/* Includes property is optional */
@@ -2017,7 +2018,11 @@ static bool parse_includes(GDBusProxy *proxy, struct external_service *service)
 
 		dbus_message_iter_get_basic(&array, &obj);
 
-		if (!queue_push_tail(service->includes, obj)) {
+		includes = g_strdup(obj);
+		if (!includes)
+			return false;
+
+		if (!queue_push_tail(service->includes, includes)) {
 			error("Failed to add Includes path in queue\n");
 			return false;
 		}
Signature · 1 line
2.29.2.299.gdc1121823c-goog
#1 lore raw

This is automated email and please do not reply to this email!

Dear submitter,

Thank you for submitting the patches to the linux bluetooth mailing list. This is a CI test results with your patch series:
PW Link:https://patchwork.kernel.org/project/bluetooth/list/?series=387933

---Test result---

##############################
Test: CheckPatch - FAIL
Output:
Fix duplicate free for GATT service includes
WARNING:COMMIT_LOG_LONG_LINE: Possible unwrapped commit description (prefer a maximum 75 chars per line) #14:
bluetoothd: src/gatt-database.c:gatt_db_service_removed() Local GATT service removed

- total: 0 errors, 1 warnings, 19 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
mechanically convert to the typical style using --fix or --fix-inplace.

"[PATCH] Fix duplicate free for GATT service includes" has style problems, please review.

NOTE: Ignored message types: COMMIT_MESSAGE COMPLEX_MACRO CONST_STRUCT FILE_PATH_CHANGES MISSING_SIGN_OFF PREFER_PACKED SPLIT_STRING SSCANF_TO_KSTRTO

NOTE: If any of the errors are false positives, please report
them to the maintainer, see CHECKPATCH in MAINTAINERS.

##############################
Test: CheckGitLint - FAIL
Output:
Fix duplicate free for GATT service includes
11: B1 Line exceeds max length (84>80): "bluetoothd: src/gatt-database.c:gatt_db_service_removed() Local GATT service removed" 14: B1 Line exceeds max length (94>80): "bluetoothd: src/sdpd-service.c:remove_record_from_server() Removing record with handle 0x10006" 15: B1 Line exceeds max length (94>80): "bluetoothd: src/gatt-database.c:proxy_removed_cb() Proxy removed - removing service: /service1"

##############################
Test: CheckBuild - PASS

##############################
Test: MakeCheck - PASS

---
Regards,
Linux Bluetooth