From: Trond Myklebust trond.myklebust@hammerspace.com
[ Upstream commit b056fa070814897be32d83b079dbc311375588e7 ]
The allocation is done with GFP_KERNEL, but it could still fail in a low memory situation.
Fixes: 4a85a6a3320b ("SUNRPC: Handle TCP socket sends with kernel_sendpage() again") Signed-off-by: Trond Myklebust trond.myklebust@hammerspace.com Signed-off-by: Sasha Levin sashal@kernel.org --- net/sunrpc/svcsock.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c index eba1714bf09a..6d5bb8bfed38 100644 --- a/net/sunrpc/svcsock.c +++ b/net/sunrpc/svcsock.c @@ -1091,7 +1091,9 @@ static int svc_tcp_sendmsg(struct socket *sock, struct msghdr *msg, int flags, ret;
*sentp = 0; - xdr_alloc_bvec(xdr, GFP_KERNEL); + ret = xdr_alloc_bvec(xdr, GFP_KERNEL); + if (ret < 0) + return ret;
msg->msg_flags = MSG_MORE; ret = kernel_sendmsg(sock, msg, &rm, 1, rm.iov_len);