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Date: Fri, 25 Apr 2014 10:44:15 +0800 From: Ying Xue <ying.xue@...driver.com> To: <dan.carpenter@...cle.com> CC: <davem@...emloft.net>, <jon.maloy@...csson.com>, <Paul.Gortmaker@...driver.com>, <erik.hugne@...csson.com>, <netdev@...r.kernel.org>, <tipc-discussion@...ts.sourceforge.net> Subject: [PATCH net-next] 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@...cle.com> Signed-off-by: Ying Xue <ying.xue@...driver.com> --- net/tipc/discover.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) 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 @@ 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)); -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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