From ffb6ca33b04b965ac7dd10676537b93e2476dcec Mon Sep 17 00:00:00 2001 From: Frank Sorenson Date: Fri, 8 Jul 2016 16:35:25 -0500 Subject: [PATCH] sunrpc: Prevent resvport min/max inversion via sysfs and module parameter The current min/max resvport settings are independently limited by the entire range of allowed ports, so max_resvport can be set to a port lower than min_resvport. Prevent inversion of min/max values when set through sysfs and module parameter by setting the limits dependent on each other. Signed-off-by: Frank Sorenson Signed-off-by: Trond Myklebust --- net/sunrpc/xprtsock.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c index 2674309770f4..83e6f3316149 100644 --- a/net/sunrpc/xprtsock.c +++ b/net/sunrpc/xprtsock.c @@ -3153,8 +3153,12 @@ static int param_set_uint_minmax(const char *val, static int param_set_portnr(const char *val, const struct kernel_param *kp) { - return param_set_uint_minmax(val, kp, + if (kp->arg == &xprt_min_resvport) + return param_set_uint_minmax(val, kp, RPC_MIN_RESVPORT, + xprt_max_resvport); + return param_set_uint_minmax(val, kp, + xprt_min_resvport, RPC_MAX_RESVPORT); }