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svc.c: Check for a non-NULL xp_socket

Browse source 
Commit a16ff32f04 added support to the kernel RPC to set
TCP_USE_DDP.
However, for the unusual case of a NFSv4.1/4.2 non-NULL callback,
the xp_socket field of SVCXPRT is NULL, since it uses the same
socket as the client->server connection.

This patch adds the check for this to avoid crashes.

This only affects NFSv4.1/4.2 mounts where either pNFS or
delegations are in use.

MFC after:	3 days
This commit is contained in:
Rick Macklem 2024-05-27 19:22:04 -07:00
parent deab57178f
commit 6c9170e0af
1 changed files with 1 additions and 0 deletions
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1
sys/rpc/svc.c
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@ -996,6 +996,7 @@ svc_getreq(SVCXPRT *xprt, struct svc_req **rqstp_ret)
* enable TLS offload first.
*/
if (xprt->xp_doneddp == 0 && r->rq_proc != NULLPROC &&
xprt->xp_socket != NULL &&
atomic_cmpset_int(&xprt->xp_doneddp, 0, 1)) {
if (xprt->xp_socket->so_proto->pr_protocol ==
IPPROTO_TCP) {