From: Stefano Garzarella <sgarzare@redhat.com>
To: qemu-devel@nongnu.org
Cc: "Paolo Bonzini" <pbonzini@redhat.com>,
"Alex Bennée" <alex.bennee@linaro.org>,
"Philippe Mathieu-Daudé" <f4bug@amsat.org>
Subject: [PATCH] cutils: fix memory leak in get_relocated_path()
Date: Mon, 12 Apr 2021 19:02:55 +0200 [thread overview]
Message-ID: <20210412170255.231406-1-sgarzare@redhat.com> (raw)
get_relocated_path() allocates a GString object and returns the
character data (C string) to the caller without freeing the memory
allocated for that object as reported by valgrind:
24 bytes in 1 blocks are definitely lost in loss record 2,805 of 6,532
at 0x4839809: malloc (vg_replace_malloc.c:307)
by 0x55AABB8: g_malloc (in /usr/lib64/libglib-2.0.so.0.6600.8)
by 0x55C2481: g_slice_alloc (in /usr/lib64/libglib-2.0.so.0.6600.8)
by 0x55C4827: g_string_sized_new (in /usr/lib64/libglib-2.0.so.0.6600.8)
by 0x55C4CEA: g_string_new (in /usr/lib64/libglib-2.0.so.0.6600.8)
by 0x906314: get_relocated_path (cutils.c:1036)
by 0x6E1F77: qemu_read_default_config_file (vl.c:2122)
by 0x6E1F77: qemu_init (vl.c:2687)
by 0x3E3AF8: main (main.c:49)
Let's use g_string_free(gstring, false) to free only the GString object
and transfer the ownership of the character data to the caller.
Fixes: f4f5ed2cbd ("cutils: introduce get_relocated_path")
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
---
util/cutils.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/util/cutils.c b/util/cutils.c
index ee908486da..c9b91e7535 100644
--- a/util/cutils.c
+++ b/util/cutils.c
@@ -1055,5 +1055,5 @@ char *get_relocated_path(const char *dir)
assert(G_IS_DIR_SEPARATOR(dir[-1]));
g_string_append(result, dir - 1);
}
- return result->str;
+ return g_string_free(result, false);
}
--
2.30.2
next reply other threads:[~2021-04-12 17:06 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-12 17:02 Stefano Garzarella [this message]
2021-04-13 10:59 ` [PATCH] cutils: fix memory leak in get_relocated_path() Philippe Mathieu-Daudé
2021-04-13 11:47 ` Stefano Garzarella
2021-04-13 16:03 ` Philippe Mathieu-Daudé
2021-04-14 7:32 ` Marc-André Lureau
2021-05-10 15:57 ` Stefano Garzarella
2021-05-11 5:38 ` Markus Armbruster
2021-05-13 16:08 ` Laurent Vivier
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