rpc_generic.c: Fix a rpcbind core dump when rpcinfo is done

Commit c5d671b added netlink support to
server side rpcbind. However it did not add
a case for AF_NETLINK to __rpc_taddr2uaddr_af().
(Reported as PR#289625.)

As such, without this patch the r_addr field of the
netlink rbllist is NULL, which causes a crash in
svc_sendreply() for a Dump query (what rpcinfo
does).

PR:	289625
Reviewed by:	glebius
MFC after:	3 days
Differential Revision:	https://reviews.freebsd.org/D52651
Fixes:	c5d671b711 ("libc/rpc: add userland side RPC server over netlink(4)")

This commit is contained in:

Rick Macklem

2025-09-28 07:56:17 -07:00

parent bbec2c9a6d

commit 70730cd21c

1 changed files with 4 additions and 0 deletions

									
										lib/libc/rpc/rpc_generic.c
									
		+4
		
												View File
												
				@@ -610,6 +610,10 @@ __rpc_taddr2uaddr_af(int af, const struct netbuf *nbuf)

							return NULL;

						break;

				#endif

					case AF_NETLINK:

						if (asprintf(&ret, "%s", (char *)nbuf->buf) < 0)

							return NULL;

						break;

					case AF_LOCAL:

						sun = nbuf->buf;

						if (asprintf(&ret, "%.*s", (int)(sun->sun_len -