From: Paolo Abeni <pabeni@redhat.com>
Date: Wed, 22 Jul 2020 15:20:50 +0000 (+0200)
Subject: mptcp: zero token hash at creation time.
X-Git-Tag: v5.9-rc1~133^2~155
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=6ab301c98f174a8c25d5351b977a1113e2f1fb91;p=thirdparty%2Fkernel%2Flinux.git

mptcp: zero token hash at creation time.

Otherwise the 'chain_len' filed will carry random values,
some token creation calls will fail due to excessive chain
length, causing unexpected fallback to TCP.

Fixes: 2c5ebd001d4f ("mptcp: refactor token container")
Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Tested-by: Christoph Paasch <cpaasch@apple.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/mptcp/token.c b/net/mptcp/token.c
index b25b390dbbff2..97cfc45bcc4f3 100644
--- a/net/mptcp/token.c
+++ b/net/mptcp/token.c
@@ -368,7 +368,7 @@ void __init mptcp_token_init(void)
 					     sizeof(struct token_bucket),
 					     0,
 					     20,/* one slot per 1MB of memory */
-					     0,
+					     HASH_ZERO,
 					     NULL,
 					     &token_mask,
 					     0,