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[BlueZ,2/4] tools: Fix memory leaks in btgatt-server/client

Message ID 20220507173505.31249-3-i.kamaletdinov@omp.ru
State Superseded
Headers show
Series Fix few more bugs found by SVACE | expand

Commit Message

Ildar Kamaletdinov May 7, 2022, 5:35 p.m. UTC 
According to man buffer allocated by getline() should be freed by
the user program even if getline() failed.

Found by Linux Verification Center (linuxtesting.org) with the SVACE
static analysis tool.
---
 tools/btgatt-client.c | 6 +++++-
 tools/btgatt-server.c | 5 ++++-
 2 files changed, 9 insertions(+), 2 deletions(-)
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Patch

diff --git a/tools/btgatt-client.c b/tools/btgatt-client.c
index 8c9365aa2..58a03bd48 100644
--- a/tools/btgatt-client.c
+++ b/tools/btgatt-client.c
@@ -1355,12 +1355,16 @@  static void prompt_read_cb(int fd, uint32_t events, void *user_data)
 		return;
 	}
 
-	if ((read = getline(&line, &len, stdin)) == -1)
+	read = getline(&line, &len, stdin);
+	if (read < 0) {
+		free(line);
 		return;
+	}
 
 	if (read <= 1) {
 		cmd_help(cli, NULL);
 		print_prompt();
+		free(line);
 		return;
 	}
 
diff --git a/tools/btgatt-server.c b/tools/btgatt-server.c
index 4a5d2b720..90a6c9b0a 100644
--- a/tools/btgatt-server.c
+++ b/tools/btgatt-server.c
@@ -1080,12 +1080,15 @@  static void prompt_read_cb(int fd, uint32_t events, void *user_data)
 	}
 
 	read = getline(&line, &len, stdin);
-	if (read < 0)
+	if (read < 0) {
+		free(line);
 		return;
+	}
 
 	if (read <= 1) {
 		cmd_help(server, NULL);
 		print_prompt();
+		free(line);
 		return;
 	}