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| author | Frank Sorenson <sorenson@redhat.com> | 2016-07-08 16:35:23 -0500 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@primarydata.com> | 2016-07-19 16:23:26 -0400 |
| commit | 5d71899a26630654d65e143c63c3c6f12d9aa287 (patch) | |
| tree | c33b7e75e2569c4c4ea7af2881d678cbfa379e06 /net/sunrpc/xprtsock.c | |
| parent | 34ae685cb3ac965c0c733c866412f3b66ddd64e7 (diff) | |
| download | linux-5d71899a26630654d65e143c63c3c6f12d9aa287.tar.bz2 | |
sunrpc: Fix reserved port range calculation
The range calculation for choosing the random reserved port will panic
with divide-by-zero when min_resvport == max_resvport, a range of one
port, not zero.
Fix the reserved port range calculation by adding one to the difference.
Signed-off-by: Frank Sorenson <sorenson@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'net/sunrpc/xprtsock.c')
| -rw-r--r-- | net/sunrpc/xprtsock.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c index 7e2b2fa189c3..1adda71f4e3a 100644 --- a/net/sunrpc/xprtsock.c +++ b/net/sunrpc/xprtsock.c @@ -1714,7 +1714,7 @@ static void xs_udp_timer(struct rpc_xprt *xprt, struct rpc_task *task) static unsigned short xs_get_random_port(void) { - unsigned short range = xprt_max_resvport - xprt_min_resvport; + unsigned short range = xprt_max_resvport - xprt_min_resvport + 1; unsigned short rand = (unsigned short) prandom_u32() % range; return rand + xprt_min_resvport; } |