diff mbox series

[BlueZ,2/4] device: Fix the reusing gerror without re-initialization

Message ID 20220211001840.22566-2-hj.tedd.an@gmail.com (mailing list archive)
State Superseded
Headers show
Series [BlueZ,1/4] adapter: Fix the reusing gerror without re-initialization | expand

Checks

Context Check Description
tedd_an/pre-ci_am success Success
tedd_an/checkpatch warning [BlueZ,2/4] device: Fix the reusing gerror without re-initialization WARNING:UNKNOWN_COMMIT_ID: Unknown commit id '6a154cd08000b', maybe rebased or not pulled? #90: Fixes: 6a154cd08000b ("device: Fix unchecked return value") /github/workspace/src/12742617.patch total: 0 errors, 1 warnings, 48 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. /github/workspace/src/12742617.patch has style problems, please review. NOTE: Ignored message types: COMMIT_MESSAGE COMPLEX_MACRO CONST_STRUCT FILE_PATH_CHANGES MISSING_SIGN_OFF PREFER_PACKED SPDX_LICENSE_TAG SPLIT_STRING SSCANF_TO_KSTRTO NOTE: If any of the errors are false positives, please report them to the maintainer, see CHECKPATCH in MAINTAINERS.
tedd_an/gitlint success Gitlint PASS

Commit Message

Tedd Ho-Jeong An Feb. 11, 2022, 12:18 a.m. UTC 
From: Tedd Ho-Jeong An <tedd.an@intel.com>

When the GError variable is freeed with g_error_free(), it is not set to
NULL and reusing the same variable again can cause the seg_fault because
it is still pointing the old memory address which is freed.

This patch relaces the g_error_free() to g_clear_error() which frees the
variable and set it to NULL if the variable is used in the function
again.

Fixes: 6a154cd08000b ("device: Fix unchecked return value")
---
 src/device.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)
diff mbox series

Patch

diff --git a/src/device.c b/src/device.c
index 6d29eb896..6a7bdd207 100644
--- a/src/device.c
+++ b/src/device.c
@@ -543,7 +543,7 @@  void device_store_cached_name(struct btd_device *dev, const char *name)
 	if (!g_key_file_load_from_file(key_file, filename, 0, &gerr)) {
 		error("Unable to load key file from %s: (%s)", filename,
 								gerr->message);
-		g_error_free(gerr);
+		g_clear_error(&gerr);
 	}
 
 	data_old = g_key_file_to_data(key_file, &length_old, NULL);
@@ -556,7 +556,7 @@  void device_store_cached_name(struct btd_device *dev, const char *name)
 		if (!g_file_set_contents(filename, data, length, &gerr)) {
 			error("Unable set contents for %s: (%s)", filename,
 								gerr->message);
-			g_error_free(gerr);
+			g_clear_error(&gerr);
 		}
 	}
 	g_free(data);
@@ -592,7 +592,7 @@  static void device_store_cached_name_resolve(struct btd_device *dev)
 	if (!g_key_file_load_from_file(key_file, filename, 0, &gerr)) {
 		error("Unable to load key file from %s: (%s)", filename,
 								gerr->message);
-		g_error_free(gerr);
+		g_clear_error(&gerr);
 	}
 
 	failed_time = (uint64_t) dev->name_resolve_failed_time;
@@ -2666,7 +2666,7 @@  static void store_gatt_db(struct btd_device *device)
 	if (!g_key_file_load_from_file(key_file, filename, 0, &gerr)) {
 		error("Unable to load key file from %s: (%s)", filename,
 								gerr->message);
-		g_error_free(gerr);
+		g_clear_error(&gerr);
 	}
 
 	/* Remove current attributes since it might have changed */
@@ -3635,7 +3635,7 @@  static void load_att_info(struct btd_device *device, const char *local,
 	if (!g_key_file_load_from_file(key_file, filename, 0, &gerr)) {
 		error("Unable to load key file from %s: (%s)", filename,
 								gerr->message);
-		g_error_free(gerr);
+		g_clear_error(&gerr);
 	}
 	groups = g_key_file_get_groups(key_file, NULL);
 
@@ -6163,7 +6163,7 @@  void device_store_svc_chng_ccc(struct btd_device *device, uint8_t bdaddr_type,
 	if (!g_key_file_load_from_file(key_file, filename, 0, &gerr)) {
 		error("Unable to load key file from %s: (%s)", filename,
 								gerr->message);
-		g_error_free(gerr);
+		g_clear_error(&gerr);
 	}
 
 	/* for bonded devices this is done on every connection so limit writes