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linux/net/tipc
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Lv Yunlong 6bf24dc0cc net:tipc: Fix a double free in tipc_sk_mcast_rcv 
In the if(skb_peek(arrvq) == skb) branch, it calls __skb_dequeue(arrvq) to get
the skb by skb = skb_peek(arrvq). Then __skb_dequeue() unlinks the skb from arrvq
and returns the skb which equals to skb_peek(arrvq). After __skb_dequeue(arrvq)
finished, the skb is freed by kfree_skb(__skb_dequeue(arrvq)) in the first time.

Unfortunately, the same skb is freed in the second time by kfree_skb(skb) after
the branch completed.

My patch removes kfree_skb() in the if(skb_peek(arrvq) == skb) branch, because
this skb will be freed by kfree_skb(skb) finally.

Fixes: cb1b728096 ("tipc: eliminate race condition at multicast reception")
Signed-off-by: Lv Yunlong <lyl2019@mail.ustc.edu.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-29 16:21:37 -07:00
..
addr.c tipc: make node number calculation reproducible 2020-11-27 17:34:01 -08:00
addr.h tipc: make node number calculation reproducible 2020-11-27 17:34:01 -08:00
bcast.c tipc: fix incorrect setting window for bcast link 2020-10-16 14:09:12 -07:00
bcast.h tipc: update a binding service via broadcast 2020-06-17 08:53:34 -07:00
bearer.c net/tipc: fix all function Return: notation 2020-12-01 15:38:17 -08:00
bearer.h net/tipc: fix tipc header files for kernel-doc 2020-12-01 15:37:41 -08:00
core.c tipc: remove dead code in tipc_net and relatives 2020-10-30 13:11:47 -07:00
core.h tipc: make node number calculation reproducible 2020-11-27 17:34:01 -08:00
crypto.c net/tipc: fix all function Return: notation 2020-12-01 15:38:17 -08:00
crypto.h net/tipc: fix tipc header files for kernel-doc 2020-12-01 15:37:41 -08:00
diag.c tipc: switch to rhashtable iterator 2018-08-29 18:04:54 -07:00
discover.c net/tipc: fix all function Return: notation 2020-12-01 15:38:17 -08:00
discover.h
eth_media.c tipc: Use is_broadcast_ether_addr() instead of memcmp() 2020-08-03 16:21:46 -07:00
group.c tipc: update address terminology in code 2020-11-27 17:34:01 -08:00
group.h tipc: update address terminology in code 2020-11-27 17:34:01 -08:00
ib_media.c tipc: introduce variable window congestion control 2019-12-10 17:31:15 -08:00
Kconfig tipc: not enable tipc when ipv6 works as a module 2020-08-16 21:04:55 -07:00
link.c net: tip: fix a couple kernel-doc markups 2021-01-14 10:30:24 -08:00
link.h tipc: add support for broadcast rcv stats dumping 2020-05-26 15:16:52 -07:00
Makefile tipc: remove meaningless assignment in Makefile 2020-01-08 12:38:54 -08:00
monitor.c net: tipc: Replace expression with offsetof() 2021-01-05 15:43:41 -08:00
monitor.h tipc: update mon's self addr when node addr generated 2019-11-12 19:45:45 -08:00
msg.c tipc: remove duplicated code in tipc_msg_create 2021-01-27 18:50:07 -08:00
msg.h tipc: add automatic session key exchange 2020-09-18 13:58:37 -07:00
name_distr.c net/tipc: fix all function Return: notation 2020-12-01 15:38:17 -08:00
name_distr.h net/tipc: fix tipc header files for kernel-doc 2020-12-01 15:37:41 -08:00
name_table.c net/tipc: fix name_table.c kernel-doc 2020-12-01 15:38:05 -08:00
name_table.h net/tipc: fix tipc header files for kernel-doc 2020-12-01 15:37:41 -08:00
net.c tipc: update address terminology in code 2020-11-27 17:34:01 -08:00
net.h tipc: fix a deadlock when flushing scheduled work 2020-09-07 12:08:53 -07:00
netlink_compat.c tipc: do sanity check payload of a netlink message 2020-12-16 12:45:02 -08:00
netlink.c tipc: add automatic rekeying for encryption key 2020-09-18 13:58:37 -07:00
netlink.h net: tipc: allocate attrs locally instead of using genl_family_attrbuf in compat_dumpit() 2019-10-06 15:44:47 +02:00
node.c tipc: better validate user input in tipc_nl_retrieve_key() 2021-03-15 13:21:18 -07:00
node.h tipc: add automatic session key exchange 2020-09-18 13:58:37 -07:00
socket.c net:tipc: Fix a double free in tipc_sk_mcast_rcv 2021-03-29 16:21:37 -07:00
socket.h tipc: add stricter control of reserved service types 2020-10-30 08:19:18 -07:00
subscr.c net/tipc: fix all function Return: notation 2020-12-01 15:38:17 -08:00
subscr.h net/tipc: fix tipc header files for kernel-doc 2020-12-01 15:37:41 -08:00
sysctl.c tipc: add automatic session key exchange 2020-09-18 13:58:37 -07:00
topsrv.c tipc: update address terminology in code 2020-11-27 17:34:01 -08:00
topsrv.h
trace.c net/tipc: fix various kernel-doc warnings 2020-12-01 15:37:46 -08:00
trace.h tipc: add support for broadcast rcv stats dumping 2020-05-26 15:16:52 -07:00
udp_media.c net/tipc: fix various kernel-doc warnings 2020-12-01 15:37:46 -08:00
udp_media.h