* [PATCH v4] malloc: fix memleak in function muntrace
@ 2020-04-24 1:24 chenzefeng
0 siblings, 0 replies; only message in thread
From: chenzefeng @ 2020-04-24 1:24 UTC (permalink / raw)
To: libc-alpha, fw, dj, zackw; +Cc: liucheng32, chenzefeng2, zengweilin
when we call functons as follow:
setenv("MALLOC_TRACE", "/tmp/mtrace.log", 0);
mtrace();
...
muntrace();
It would cause memleak, for the mtrace malloc some memory:
mtd = malloc(TRACE_BUFFER_SIZE);
and it would not be free. Therefore 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..61f4ca3520 100644
--- a/malloc/mtrace.c
+++ b/malloc/mtrace.c
@@ -365,4 +365,6 @@ muntrace (void)
fprintf (f, "= End\n");
fclose (f);
+ free (malloc_trace_buffer);
+ malloc_trace_buffer = NULL;
}
--
2.12.3
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