From: chenzefeng <chenzefeng2@huawei.com>
To: <libc-alpha@sourceware.org>
Cc: <liucheng32@huawei.com>, <chenzefeng2@huawei.com>,
<zengweilin@huawei.com>
Subject: [PATCH] malloc: fix memleak in function muntrace
Date: Sun, 19 Apr 2020 15:37:54 +0800 [thread overview]
Message-ID: <20200419073754.72967-1-chenzefeng2@huawei.com> (raw)
when we call functons as follow:
mtrace();
...
muntrace();
It would cause memleak, for the mtrace malloc some memory:
mtd = malloc(TRACE_BUFFER_SIZE);
and it would not be free. Therefor it should be freed in muntrace.
Signed-off-by: chenzefeng <chenzefeng2@huawei.com>
---
malloc/mtrace.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/malloc/mtrace.c b/malloc/mtrace.c
index 7e7719df97..0b92106e6e 100644
--- a/malloc/mtrace.c
+++ b/malloc/mtrace.c
@@ -365,4 +365,6 @@ muntrace (void)
fprintf (f, "= End\n");
fclose (f);
+ if (mtb != NULL)
+ free (mtb);
}
--
2.12.3
next reply other threads:[~2020-04-19 7:38 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-19 7:37 chenzefeng [this message]
2020-04-19 11:39 ` Florian Weimer
2020-04-20 13:49 ` chenzefeng (A)
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