From: Trond Myklebust <trond.myklebust@hammerspace.com> stable inclusion from stable-v5.10.111 commit b3c00be2ff8bc7e211fb04ec42facf0e4c876800 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I5GL1Z Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=... -------------------------------- [ 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> Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com> Reviewed-by: Wei Li <liwei391@huawei.com> --- 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); -- 2.20.1