Hello, this series tries to fix a long standing problem in the CAN echo SKB handling. The problem shows up if an echo SKB for a SKB that references an already closed socket is created.
It looks like the mac80211/tx.c has the same problem, see RFC patch 3 for details. regards, Oleksij Oleksij Rempel (3): skbuff: skb_clone_sk_optional(): add function to always clone a skb and increase refcount on sk if valid can: fix ref count warning if socket was closed before skb was cloned [RFC] mac80211: ieee80211_store_ack_skb(): make use of skb_clone_sk_optional() include/linux/can/skb.h | 3 +-- include/linux/skbuff.h | 1 + net/can/af_can.c | 6 +++--- net/can/j1939/main.c | 3 +-- net/can/j1939/socket.c | 3 +-- net/can/j1939/transport.c | 4 +--- net/core/skbuff.c | 27 +++++++++++++++++++++++++++ net/mac80211/tx.c | 6 +----- 8 files changed, 36 insertions(+), 17 deletions(-) -- 2.29.2