From: Harish Jenny K N <harish_kand...@mentor.com>
Unable to handle kernel NULL pointer dereference at virtual address 00000000
(netlink_release+0x0/0x2a0) from [<8034e78c>] (sock_release+0x28/0xa4)
(sock_release+0x0/0xa4) from [<8034e830>] (sock_close+0x28/0x34)
(sock_close+0x0/0x34) from [<800f3490>] (__fput+0xf0/0x1ec)
(__fput+0x0/0x1ec) from [<800f3634>] (____fput+0x10/0x14)
(____fput+0x0/0x14) from [<80040a64>] (task_work_run+0xb8/0xd8)
(task_work_run+0x0/0xd8) from [<800113a0>] (do_work_pending+0xb0/0xc4)
(do_work_pending+0x0/0xc4) from [<8000d960>] (work_pending+0xc/0x20)
Call flow of the inline and static functions
netlink_release
-----netlink_remove
---------__sk_del_bind_node
--------------__hlist_del
Signed-off-by: Harish Jenny K N <harish_kand...@mentor.com>
---
net/netlink/af_netlink.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index c416725..21a6b32 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -1103,7 +1103,7 @@ static void netlink_remove(struct sock *sk)
netlink_table_grab();
if (nlk_sk(sk)->subscriptions)
- __sk_del_bind_node(sk);
+ hlist_del_init(&sk->sk_bind_node);
netlink_table_ungrab();
}
@@ -1382,7 +1382,7 @@ netlink_update_subscriptions(struct sock *sk, unsigned
int subscriptions)
struct netlink_sock *nlk = nlk_sk(sk);
if (nlk->subscriptions && !subscriptions)
- __sk_del_bind_node(sk);
+ hlist_del_init(&sk->sk_bind_node);
else if (!nlk->subscriptions && subscriptions)
sk_add_bind_node(sk, &nl_table[sk->sk_protocol].mc_list);
nlk->subscriptions = subscriptions;
--
1.7.9.5
--
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