tcp: two more missing bh disable

percpu_counter only have protection against preemption.

TCP stack uses them possibly from BH, so we need BH protection
in contexts that could be run in process context

Fixes: c10d9310edf5 ("tcp: do not assume TCP code is non preemptible")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 0 deletions

diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 761bc492c5e3..a7ab9472d645 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -1839,7 +1839,9 @@ void tcp_v4_destroy_sock(struct sock *sk)
         tcp_free_fastopen_req(tp);
         tcp_saved_syn_free(tp);
 
+        local_bh_disable();
         sk_sockets_allocated_dec(sk);
+        local_bh_enable();
 
         if (mem_cgroup_sockets_enabled && sk->sk_memcg)
                 sock_release_memcg(sk);