diff options
| author | Andrey Ryabinin <aryabinin@virtuozzo.com> | 2015-12-21 12:54:45 +0300 |
|---|---|---|
| committer | Sasha Levin <sasha.levin@oracle.com> | 2016-02-15 23:42:42 +0300 |
| commit | d27fa00889bc11220275eb3a7d107a72664e538f (patch) | |
| tree | a20e6c0051f0645a92bb6a82ef6db6c10498e47c | |
| parent | a64b97e5ea7da62dd8011d6dc46705f560ae1de3 (diff) | |
| download | linux-d27fa00889bc11220275eb3a7d107a72664e538f.tar.xz | |
ipv6/addrlabel: fix ip6addrlbl_get()
[ Upstream commit e459dfeeb64008b2d23bdf600f03b3605dbb8152 ]
ip6addrlbl_get() has never worked. If ip6addrlbl_hold() succeeded,
ip6addrlbl_get() will exit with '-ESRCH'. If ip6addrlbl_hold() failed,
ip6addrlbl_get() will use about to be free ip6addrlbl_entry pointer.
Fix this by inverting ip6addrlbl_hold() check.
Fixes: 2a8cc6c89039 ("[IPV6] ADDRCONF: Support RFC3484 configurable address selection policy table.")
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Reviewed-by: Cong Wang <cwang@twopensource.com>
Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
| -rw-r--r-- | net/ipv6/addrlabel.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv6/addrlabel.c b/net/ipv6/addrlabel.c index fd0dc47f471d..70efbdd4d308 100644 --- a/net/ipv6/addrlabel.c +++ b/net/ipv6/addrlabel.c @@ -558,7 +558,7 @@ static int ip6addrlbl_get(struct sk_buff *in_skb, struct nlmsghdr *nlh) rcu_read_lock(); p = __ipv6_addr_label(net, addr, ipv6_addr_type(addr), ifal->ifal_index); - if (p && ip6addrlbl_hold(p)) + if (p && !ip6addrlbl_hold(p)) p = NULL; lseq = ip6addrlbl_table.seq; rcu_read_unlock(); |