From 22e7987ae7d8d13beeaf0717215800f7e803ddcf Mon Sep 17 00:00:00 2001 From: Ying Xue Date: Fri, 25 Apr 2014 10:44:15 +0800 Subject: [PATCH] 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 Signed-off-by: Ying Xue Signed-off-by: David S. Miller --- 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 ada42e436f5e..bd35c4a0746f 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)); -- 2.39.5