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tipc: fix a possible memory leak

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The commit a8b9b96e95 ("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>
This commit is contained in:
Ying Xue 2014-04-25 10:44:15 +08:00 committed by David S. Miller
parent a42c3a28e8
commit 22e7987ae7
1 changed files with 3 additions and 1 deletions
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4
net/tipc/discover.c
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@ -348,8 +348,10 @@ int tipc_disc_create(struct tipc_bearer *b_ptr, struct tipc_media_addr *dest)
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));