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SUNRPC: call xs_sock_process_cmsg for all cmsg

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xs_sock_recv_cmsg was failing to call xs_sock_process_cmsg for any cmsg
type other than TLS_RECORD_TYPE_ALERT (TLS_RECORD_TYPE_DATA, and other
values not handled.) Based on my reading of the previous commit
(cc5d5908: sunrpc: fix client side handling of tls alerts), it looks
like only iov_iter_revert should be conditional on TLS_RECORD_TYPE_ALERT
(but that other cmsg types should still call xs_sock_process_cmsg). On
my machine, I was unable to connect (over mtls) to an NFS share hosted
on FreeBSD. With this patch applied, I am able to mount the share again.

Fixes: cc5d59081f ("sunrpc: fix client side handling of tls alerts")
Signed-off-by: Justin Worrell <jworrell@gmail.com>
Reviewed-and-tested-by: Scott Mayhew <smayhew@redhat.com>
Link: https://lore.kernel.org/r/20250904211038.12874-3-jworrell@gmail.com
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
This commit is contained in:
Justin Worrell 2025-09-04 16:09:57 -05:00 • committed by Trond Myklebust
parent 199cd9e8d1
commit 9559d2fffd
1 changed files with 3 additions and 3 deletions
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6
net/sunrpc/xprtsock.c
View file

@ -407,9 +407,9 @@ xs_sock_recv_cmsg(struct socket *sock, unsigned int *msg_flags, int flags)
iov_iter_kvec(&msg.msg_iter, ITER_DEST, &alert_kvec, 1,
alert_kvec.iov_len);
ret = sock_recvmsg(sock, &msg, flags);
if (ret > 0 &&
tls_get_record_type(sock->sk, &u.cmsg) == TLS_RECORD_TYPE_ALERT) {
iov_iter_revert(&msg.msg_iter, ret);
if (ret > 0) {
if (tls_get_record_type(sock->sk, &u.cmsg) == TLS_RECORD_TYPE_ALERT)
iov_iter_revert(&msg.msg_iter, ret);
ret = xs_sock_process_cmsg(sock, &msg, msg_flags, &u.cmsg,
-EAGAIN);
}