netdev - [PATCH net-next v2] netlink: don't forget to release a rhashtable

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Date:   Tue,  6 Sep 2016 21:31:17 -0700
From:   Andrei Vagin <avagin@...nvz.org>
To:     netdev@...r.kernel.org
Cc:     "David S. Miller" <davem@...emloft.net>,
        Andrei Vagin <avagin@...nvz.org>,
        Herbert Xu <herbert@...dor.apana.org.au>
Subject: [PATCH net-next v2] netlink: don't forget to release a rhashtable_iter structure

This bug was detected by kmemleak:
unreferenced object 0xffff8804269cc3c0 (size 64):
  comm "criu", pid 1042, jiffies 4294907360 (age 13.713s)
  hex dump (first 32 bytes):
    a0 32 cc 2c 04 88 ff ff 00 00 00 00 00 00 00 00  .2.,............
    00 01 00 00 00 00 ad de 00 02 00 00 00 00 ad de  ................
  backtrace:
    [<ffffffff8184dffa>] kmemleak_alloc+0x4a/0xa0
    [<ffffffff8124720f>] kmem_cache_alloc_trace+0x10f/0x280
    [<ffffffffa02864cc>] __netlink_diag_dump+0x26c/0x290 [netlink_diag]

v2: don't remove a reference on a rhashtable_iter structure to
    release it from netlink_diag_dump_done

Cc: Herbert Xu <herbert@...dor.apana.org.au>
Fixes: ad202074320c ("netlink: Use rhashtable walk interface in diag dump")
Signed-off-by: Andrei Vagin <avagin@...nvz.org>
---
 net/netlink/diag.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/net/netlink/diag.c b/net/netlink/diag.c
index 3e3e253..b2f0e98 100644
--- a/net/netlink/diag.c
+++ b/net/netlink/diag.c
@@ -127,7 +127,6 @@ stop:
 		goto done;
 
 	rhashtable_walk_exit(hti);
-	cb->args[2] = 0;
 	num++;
 
 mc_list:
-- 
2.5.5