diff options
| author | Eric Dumazet <edumazet@google.com> | 2017-03-03 21:01:02 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-03-22 12:43:33 +0100 |
| commit | 98fa3d2a8e399c40f681bca83f8ab522657c16db (patch) | |
| tree | c308280c77424503808d6f602b895b2355059f6d /kernel/user_namespace.c | |
| parent | 07753bc6a2816c1c3b9f7bff133251f623c7bc91 (diff) | |
net: fix socket refcounting in skb_complete_wifi_ack()
[ Upstream commit dd4f10722aeb10f4f582948839f066bebe44e5fb ]
TX skbs do not necessarily hold a reference on skb->sk->sk_refcnt
By the time TX completion happens, sk_refcnt might be already 0.
sock_hold()/sock_put() would then corrupt critical state, like
sk_wmem_alloc.
Fixes: bf7fa551e0ce ("mac80211: Resolve sk_refcnt/sk_wmem_alloc issue in wifi ack path")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Alexander Duyck <alexander.h.duyck@intel.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: Soheil Hassas Yeganeh <soheil@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/user_namespace.c')
0 files changed, 0 insertions, 0 deletions