From: Geert Uytterhoeven Date: Tue, 21 Nov 2017 12:23:54 +0000 (+0100) Subject: net/smc: Fix preinitialization of buf_desc in __smc_buf_create() X-Git-Tag: v4.15-rc1~15^2~9^2 X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=688703702584dd513b50001bd1eb068655631e9b;p=uclinux-h8%2Flinux.git net/smc: Fix preinitialization of buf_desc in __smc_buf_create() With gcc-4.1.2: net/smc/smc_core.c: In function ‘__smc_buf_create’: net/smc/smc_core.c:567: warning: ‘bufsize’ may be used uninitialized in this function Indeed, if the for-loop is never executed, bufsize is used uninitialized. In addition, buf_desc is stored for later use, while it is still a NULL pointer. Before, error handling was done by checking if buf_desc is non-NULL. The cleanup changed this to an error check, but forgot to update the preinitialization of buf_desc to an error pointer. Update the preinitializatin of buf_desc to fix this. Fixes: b33982c3a6838d13 ("net/smc: cleanup function __smc_buf_create()") Signed-off-by: Geert Uytterhoeven Signed-off-by: Ursula Braun Acked-by: Arnd Bergmann Signed-off-by: David S. Miller --- diff --git a/net/smc/smc_core.c b/net/smc/smc_core.c index 3b5e5d4bc763..94f21116dac5 100644 --- a/net/smc/smc_core.c +++ b/net/smc/smc_core.c @@ -562,7 +562,7 @@ static int __smc_buf_create(struct smc_sock *smc, bool is_rmb) { struct smc_connection *conn = &smc->conn; struct smc_link_group *lgr = conn->lgr; - struct smc_buf_desc *buf_desc = NULL; + struct smc_buf_desc *buf_desc = ERR_PTR(-ENOMEM); struct list_head *buf_list; int bufsize, bufsize_short; int sk_buf_size;