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authorTetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>2019-04-12 19:54:05 +0900
committerDavid S. Miller <davem@davemloft.net>2019-04-12 10:25:03 -0700
commita9107a14a9b9112775459ad291fc5de0f2513ce0 (patch)
tree530a53f9a7d14a343682fa77c4fc96fcbbd02400 /net
parentd852be84770c0611f8b76bd7046c6a814c5b9f11 (diff)
downloadlinux-stericsson-a9107a14a9b9112775459ad291fc5de0f2513ce0.tar.gz
rxrpc: Check address length before reading srx_service field
KMSAN will complain if valid address length passed to bind() is shorter than sizeof(struct sockaddr_rxrpc) bytes. Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/rxrpc/af_rxrpc.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/net/rxrpc/af_rxrpc.c b/net/rxrpc/af_rxrpc.c
index 96f2952bbdfd..c54dce3ca0dd 100644
--- a/net/rxrpc/af_rxrpc.c
+++ b/net/rxrpc/af_rxrpc.c
@@ -135,7 +135,7 @@ static int rxrpc_bind(struct socket *sock, struct sockaddr *saddr, int len)
struct sockaddr_rxrpc *srx = (struct sockaddr_rxrpc *)saddr;
struct rxrpc_local *local;
struct rxrpc_sock *rx = rxrpc_sk(sock->sk);
- u16 service_id = srx->srx_service;
+ u16 service_id;
int ret;
_enter("%p,%p,%d", rx, saddr, len);
@@ -143,6 +143,7 @@ static int rxrpc_bind(struct socket *sock, struct sockaddr *saddr, int len)
ret = rxrpc_validate_address(rx, srx, len);
if (ret < 0)
goto error;
+ service_id = srx->srx_service;
lock_sock(&rx->sk);