tipc: fix a possible memory leak
The commit a8b9b96e959f3c035af20b1bd2ba67b0b7269b19 ("tipc: fix race
in disc create/delete") leads to the following static checker warning:
net/tipc/discover.c:352 tipc_disc_create()
warn: possible memory leak of 'req'
The risk of memory leak really exists in practice. Especially when
it's failed to allocate memory for "req->buf", tipc_disc_create()
doesn't free its allocated memory, instead just directly returns
with ENOMEM error code. In this situation, memory leak, of course,
happens.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/tipc/discover.c b/net/tipc/discover.c
index ada42e4..bd35c4a 100644
--- a/net/tipc/discover.c
+++ b/net/tipc/discover.c
@@ -348,8 +348,10 @@
return -ENOMEM;
req->buf = tipc_buf_acquire(INT_H_SIZE);
- if (!req->buf)
+ if (!req->buf) {
+ kfree(req);
return -ENOMEM;
+ }
tipc_disc_init_msg(req->buf, DSC_REQ_MSG, b_ptr);
memcpy(&req->dest, dest, sizeof(*dest));
