linux/net
Sven Eckelmann 73f7cbb151 batman-adv: Check ptr for NULL before reducing its refcnt
commit 6340dcbd61 upstream.

The commit b37a466837 ("netdevice: add the case if dev is NULL") changed
the way how the NULL check for net_devices have to be handled when trying
to reduce its reference counter. Before this commit, it was the
responsibility of the caller to check whether the object is NULL or not.
But it was changed to behave more like kfree. Now the callee has to handle
the NULL-case.

The batman-adv code was scanned via cocinelle for similar places. These
were changed to use the paradigm

  @@
  identifier E, T, R, C;
  identifier put;
  @@
   void put(struct T *E)
   {
  +	if (!E)
  +		return;
  	kref_put(&E->C, R);
   }

Functions which were used in other sources files were moved to the header
to allow the compiler to inline the NULL check and the kref_put call.

Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-04-08 14:40:42 +02:00
..
6lowpan 6lowpan: iphc: Fix an off-by-one check of array index 2021-09-15 09:50:34 +02:00
9p xen/9p: use alloc/free_pages_exact() 2022-03-11 12:11:54 +01:00
802 net/802/garp: fix memleak in garp_request_join() 2021-07-31 08:16:11 +02:00
8021q net: vlan: fix underflow for the real_dev refcnt 2021-12-01 09:19:08 +01:00
appletalk appletalk: Fix skb allocation size in loopback case 2021-04-07 15:00:08 +02:00
atm
ax25 ax25: Fix NULL pointer dereference in ax25_kill_by_device 2022-03-16 14:15:58 +01:00
batman-adv batman-adv: Check ptr for NULL before reducing its refcnt 2022-04-08 14:40:42 +02:00
bluetooth Bluetooth: call hci_le_conn_failed with hdev lock in hci_le_conn_failed 2022-04-08 14:40:22 +02:00
bpf bpf, test, cgroup: Use sk_{alloc,free} for test cases 2021-10-27 09:56:56 +02:00
bpfilter bpfilter: Specify the log level for the kmsg message 2021-07-14 16:56:29 +02:00
bridge net: bridge: vlan: fix memory leak in __allowed_ingress 2022-02-01 17:25:48 +01:00
caif net-caif: avoid user-triggerable WARN_ON(1) 2021-09-22 12:27:56 +02:00
can can: isotp: restore accidentally removed MSG_PEEK feature 2022-04-08 14:40:42 +02:00
ceph
core bpf, sockmap: Fix memleak in tcp_bpf_sendmsg while sk msg is full 2022-04-08 14:40:21 +02:00
dcb net: dcb: disable softirqs in dcbnl_flush_dev() 2022-03-08 19:09:37 +01:00
dccp tcp: switch orphan_count to bare per-cpu counters 2021-11-18 14:04:08 +01:00
decnet net: decnet: Fix sleeping inside in af_decnet 2021-07-28 14:35:38 +02:00
dns_resolver
dsa net: dsa: Add missing of_node_put() in dsa_port_parse_of 2022-03-23 09:13:28 +01:00
ethernet
ethtool ethtool: do not perform operations on net devices being unregistered 2021-12-17 10:14:41 +01:00
hsr net: hsr: fix mac_len checks 2021-06-03 09:00:50 +02:00
ieee802154 net: ieee802154: Return meaningful error codes from the netlink helpers 2022-02-08 18:30:37 +01:00
ife
ipv4 tcp: ensure PMTU updates are processed during fastopen 2022-04-08 14:40:23 +02:00
ipv6 udp: call udp_encap_enable for v6 sockets when enabling encap 2022-04-08 14:39:54 +02:00
iucv
kcm
key af_key: add __GFP_ZERO flag for compose_sadb_supported in function pfkey_register 2022-04-08 14:39:48 +02:00
l2tp net/l2tp: Fix reference count leak in l2tp_udp_recv_core 2021-09-22 12:27:56 +02:00
l3mdev
lapb
llc llc: only change llc->dev when bind() succeeds 2022-03-28 09:57:10 +02:00
mac80211 mac80211: fix potential double free on mesh join 2022-03-28 09:57:10 +02:00
mac802154 net: mac802154: Fix general protection fault 2021-04-14 08:42:13 +02:00
mpls net: mpls: Fix notifications when deleting a device 2021-12-08 09:03:23 +01:00
mptcp mptcp: clear 'kern' flag from fallback sockets 2021-12-22 09:30:54 +01:00
ncsi net/ncsi: check for error return from call to nla_put_u32 2022-01-05 12:40:32 +01:00
netfilter netfilter: nf_conntrack_tcp: preserve liberal flag in tcp options 2022-04-08 14:40:28 +02:00
netlabel net: fix NULL pointer reference in cipso_v4_doi_free 2021-09-18 13:40:35 +02:00
netlink af_netlink: Fix shift out of bounds in group mask calculation 2022-04-08 14:40:22 +02:00
netrom netrom: fix api breakage in nr_setsockopt() 2022-01-27 10:54:03 +01:00
nfc nfc: llcp: fix NULL error pointer dereference on sendmsg() after failed bind() 2022-01-27 10:53:41 +01:00
nsh
openvswitch openvswitch: always update flow key after nat 2022-04-08 14:40:23 +02:00
packet net/packet: fix slab-out-of-bounds access in packet_recvmsg() 2022-03-23 09:13:27 +01:00
phonet phonet: refcount leak in pep_sock_accep 2022-01-11 15:25:01 +01:00
psample
qrtr net: qrtr: fix another OOB Read in qrtr_endpoint_post 2021-09-03 10:09:21 +02:00
rds rds: memory leak in __rds_conn_create() 2021-12-22 09:30:54 +01:00
rfkill
rose
rxrpc rxrpc: Fix call timer start racing with call destruction 2022-04-08 14:40:41 +02:00
sched net/sched: act_ct: Fix flow table lookup after ct clear or switching zones 2022-03-02 11:42:50 +01:00
sctp sctp: fix the processing for INIT chunk 2022-03-19 13:44:42 +01:00
smc net/smc: fix unexpected SMC_CLC_DECL_ERR_REGRMB error cause by server 2022-03-08 19:09:33 +01:00
strparser bpf: sockmap, strparser, and tls are reusing qdisc_skb_cb and colliding 2021-11-18 14:04:27 +01:00
sunrpc SUNRPC: avoid race between mod_timer() and del_timer_sync() 2022-04-08 14:39:50 +02:00
switchdev
tipc tipc: fix the timer expires after interval 100ms 2022-04-08 14:40:23 +02:00
tls net/tls: Fix authentication failure in CCM mode 2021-12-08 09:03:29 +01:00
unix af_unix: annote lockless accesses to unix_tot_inflight & gc_in_progress 2022-01-27 10:54:31 +01:00
vmw_vsock vsock: each transport cycles only on its own sockets 2022-03-23 09:13:27 +01:00
wimax
wireless nl80211: Update bss channel on channel switch for P2P_CLIENT 2022-03-19 13:44:45 +01:00
x25 net/x25: Fix null-ptr-deref caused by x25_disconnect 2022-04-08 14:40:30 +02:00
xdp Revert "xsk: Do not sleep in poll() when need_wakeup set" 2021-12-22 09:30:59 +01:00
xfrm xfrm: fix tunnel model fragmentation behavior 2022-04-08 14:39:47 +02:00
compat.c net: Return the correct errno code 2021-06-18 10:00:06 +02:00
devres.c
Kconfig
Makefile
socket.c ethtool: improve compat ioctl handling 2021-09-18 13:40:21 +02:00
sysctl_net.c