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SUNRPC: rpcbind should never reset the port to the value '0'

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[ Upstream commit 214c13e380 ]

If we already had a valid port number for the RPC service, then we
should not allow the rpcbind client to set it to the invalid value '0'.

Reviewed-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Trond Myklebust 2025-03-24 19:05:48 -04:00 committed by Greg Kroah-Hartman
parent 984d8a392f
commit dac9e6af53
1 changed files with 3 additions and 2 deletions
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5
net/sunrpc/rpcb_clnt.c
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@ -820,9 +820,10 @@ static void rpcb_getport_done(struct rpc_task *child, void *data)
} }
trace_rpcb_setport(child, map->r_status, map->r_port); trace_rpcb_setport(child, map->r_status, map->r_port);
xprt->ops->set_port(xprt, map->r_port); if (map->r_port) {
if (map->r_port) xprt->ops->set_port(xprt, map->r_port);
xprt_set_bound(xprt); xprt_set_bound(xprt);
}
} }
/* /*