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SUNRPC: svc_tcp_sendmsg() should handle errors from xdr_alloc_bvec()

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[ 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>
This commit is contained in:
Trond Myklebust 2022-04-07 14:10:23 -04:00 committed by Greg Kroah-Hartman
parent 9a45e08636
commit b3c00be2ff
1 changed files with 3 additions and 1 deletions
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4
net/sunrpc/svcsock.c
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@ -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);