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linux-brain/net/ipv4/netfilter
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Florian Westphal 6449b405f9 netfilter: arp_tables: add pre_exit hook for table unregister 
commit d163a925ebbc6eb5b562b0f1d72c7e817aa75c40 upstream.

Same problem that also existed in iptables/ip(6)tables, when
arptable_filter is removed there is no longer a wait period before the
table/ruleset is free'd.

Unregister the hook in pre_exit, then remove the table in the exit
function.
This used to work correctly because the old nf_hook_unregister API
did unconditional synchronize_net.

The per-net hook unregister function uses call_rcu instead.

Fixes: b9e69e1273 ("netfilter: xtables: don't hook tables by default")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2021-04-21 12:56:16 +02:00
..
Kconfig netfilter: fix coding-style errors. 2019-09-13 11:39:38 +02:00
Makefile netfilter: fix coding-style errors. 2019-09-13 11:39:38 +02:00
arp_tables.c netfilter: arp_tables: add pre_exit hook for table unregister 2021-04-21 12:56:16 +02:00
arpt_mangle.c netfilter: ipv4: prefer skb_ensure_writable 2019-05-31 18:02:46 +02:00
arptable_filter.c netfilter: arp_tables: add pre_exit hook for table unregister 2021-04-21 12:56:16 +02:00
ip_tables.c netfilter: x_tables: fix compat match/target pad out-of-bound write 2021-04-16 11:46:38 +02:00
ipt_CLUSTERIP.c netfilter: Update obsolete comments referring to ip_conntrack 2019-07-16 13:17:00 +02:00
ipt_ECN.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-06-22 08:59:24 -04:00
ipt_REJECT.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
ipt_SYNPROXY.c netfilter: synproxy: rename mss synproxy_options field 2019-08-03 18:39:08 +02:00
ipt_ah.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
ipt_rpfilter.c netfilter: rpfilter: mask ecn bits before fib lookup 2021-01-27 11:47:52 +01:00
iptable_filter.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
iptable_mangle.c netfilter: use actual socket sk rather than skb sk when routing harder 2020-11-18 19:20:17 +01:00
iptable_nat.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
iptable_raw.c Update my email address 2019-06-10 13:00:24 +02:00
iptable_security.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
nf_defrag_ipv4.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
nf_dup_ipv4.c netfilter: drop bridge nf reset from nf_reset 2019-10-01 18:42:15 +02:00
nf_flow_table_ipv4.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
nf_log_arp.c netfilter: nf_log: missing vlan offload tag and proto 2020-10-29 09:57:45 +01:00
nf_log_ipv4.c netfilter: nf_log: missing vlan offload tag and proto 2020-10-29 09:57:45 +01:00
nf_nat_h323.c netfilter: nf_conntrack_sip: fix expectation clash 2019-07-16 13:16:59 +02:00
nf_nat_pptp.c netfilter: nf_conntrack_pptp: prevent buffer overflows in debug code 2020-06-03 08:21:35 +02:00
nf_nat_snmp_basic.asn1 netfilter: nf_nat_snmp_basic: use asn1 decoder library 2018-01-19 13:59:07 +01:00
nf_nat_snmp_basic_main.c netfilter: ipv4: prefer skb_ensure_writable 2019-05-31 18:02:46 +02:00
nf_reject_ipv4.c netfilter: use actual socket sk rather than skb sk when routing harder 2020-11-18 19:20:17 +01:00
nf_socket_ipv4.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
nf_tproxy_ipv4.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-06-22 08:59:24 -04:00
nft_dup_ipv4.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
nft_fib_ipv4.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
nft_reject_ipv4.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00