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loongarch-next
linux-loongson/net/netfilter
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Pablo Neira Ayuso cf5fb87fcd netfilter: nf_tables: reject duplicate device on updates 
A chain/flowtable update with duplicated devices in the same batch is
possible. Unfortunately, netdev event path only removes the first
device that is found, leaving unregistered the hook of the duplicated
device.

Check if a duplicated device exists in the transaction batch, bail out
with EEXIST in such case.

WARNING is hit when unregistering the hook:

 [49042.221275] WARNING: CPU: 4 PID: 8425 at net/netfilter/core.c:340 nf_hook_entry_head+0xaa/0x150
 [49042.221375] CPU: 4 UID: 0 PID: 8425 Comm: nft Tainted: G S                  6.16.0+ #170 PREEMPT(full)
 [...]
 [49042.221382] RIP: 0010:nf_hook_entry_head+0xaa/0x150

Fixes: 78d9f48f7f ("netfilter: nf_tables: add devices to existing flowtable")
Fixes: b9703ed44f ("netfilter: nf_tables: support for adding new devices to an existing netdev chain")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Florian Westphal <fw@strlen.de>
2025-08-13 08:34:55 +02:00
..
ipset treewide, timers: Rename from_timer() to timer_container_of() 2025-06-08 09:07:37 +02:00
ipvs ipvs: Fix estimator kthreads preferred affinity 2025-08-13 08:34:33 +02:00
core.c netfilter: nf_dup{4, 6}: Move duplication check to task_struct 2025-05-23 13:57:12 +02:00
Kconfig netfilter: Exclude LEGACY TABLES on PREEMPT_RT. 2025-07-25 18:38:50 +02:00
Makefile netfilter: conntrack: remove DCCP protocol support 2025-07-03 13:51:39 +02:00
nf_bpf_link.c bpf: Check netfilter ctx accesses are aligned 2025-08-01 09:22:44 -07:00
nf_conncount.c netfilter: nf_conncount: Fully initialize struct nf_conncount_tuple in insert_tree() 2025-03-12 15:28:33 +01:00
nf_conntrack_acct.c
nf_conntrack_amanda.c netfilter: conntrack: remove skb argument from nf_ct_refresh 2025-01-19 16:41:55 +01:00
nf_conntrack_bpf.c net: netfilter: Make ct zone opts configurable for bpf ct helpers 2024-05-22 15:00:56 -07:00
nf_conntrack_broadcast.c netfilter: conntrack: remove skb argument from nf_ct_refresh 2025-01-19 16:41:55 +01:00
nf_conntrack_core.c netfilter: conntrack: Remove unused net in nf_conntrack_double_lock() 2025-07-25 18:38:41 +02:00
nf_conntrack_ecache.c netfilter: conntrack: add conntrack event timestamp 2025-01-09 14:42:16 +01:00
nf_conntrack_expect.c treewide, timers: Rename from_timer() to timer_container_of() 2025-06-08 09:07:37 +02:00
nf_conntrack_extend.c
nf_conntrack_ftp.c
nf_conntrack_h323_asn1.c netfilter: nf_conntrack_h323: Add protection for bmp length out of range 2024-03-07 03:10:35 +01:00
nf_conntrack_h323_main.c netfilter: conntrack: remove skb argument from nf_ct_refresh 2025-01-19 16:41:55 +01:00
nf_conntrack_h323_types.c
nf_conntrack_helper.c
nf_conntrack_irc.c
nf_conntrack_labels.c
nf_conntrack_netbios_ns.c
nf_conntrack_netlink.c netfilter: ctnetlink: remove refcounting in expectation dumpers 2025-08-07 13:19:26 +02:00
nf_conntrack_ovs.c
nf_conntrack_pptp.c
nf_conntrack_proto_generic.c
nf_conntrack_proto_gre.c
nf_conntrack_proto_icmp.c
nf_conntrack_proto_icmpv6.c netfilter: conntrack: fix ct-state for ICMPv6 Multicast Router Discovery 2024-05-06 11:13:56 +02:00
nf_conntrack_proto_sctp.c netfilter: conntrack: cleanup timeout definitions 2025-01-12 20:21:01 -08:00
nf_conntrack_proto_tcp.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
nf_conntrack_proto_udp.c
nf_conntrack_proto.c netfilter: conntrack: remove DCCP protocol support 2025-07-03 13:51:39 +02:00
nf_conntrack_sane.c
nf_conntrack_seqadj.c
nf_conntrack_sip.c netfilter: conntrack: remove skb argument from nf_ct_refresh 2025-01-19 16:41:55 +01:00
nf_conntrack_snmp.c
nf_conntrack_standalone.c netfilter: conntrack: clean up returns in nf_conntrack_log_invalid_sysctl() 2025-08-07 13:19:26 +02:00
nf_conntrack_tftp.c
nf_conntrack_timeout.c
nf_conntrack_timestamp.c
nf_dup_netdev.c netfilter: nf_dup_netdev: Move the recursion counter struct netdev_xmit 2025-05-23 13:57:12 +02:00
nf_flow_table_bpf.c netfilter: Add bpf_xdp_flow_lookup kfunc 2024-07-01 17:03:01 +02:00
nf_flow_table_core.c netfilter: conntrack: fix erronous removal of offload bit 2025-04-17 11:14:22 +02:00
nf_flow_table_inet.c net: netfilter: move nf flowtable bpf initialization in nf_flow_table_module_init() 2024-09-12 15:41:03 +02:00
nf_flow_table_ip.c Revert "netfilter: flowtable: teardown flow if cached mtu is stale" 2025-02-12 10:35:20 +01:00
nf_flow_table_offload.c net: hold netdev instance lock during nft ndo_setup_tc 2025-03-06 12:59:43 -08:00
nf_flow_table_procfs.c
nf_flow_table_xdp.c netfilter: nf_tables: Add flowtable map for xdp offload 2024-07-01 17:01:53 +02:00
nf_hooks_lwtunnel.c sysctl: treewide: constify the ctl_table argument of proc_handlers 2024-07-24 20:59:29 +02:00
nf_internals.h netfilter: move the sysctl nf_hooks_lwtunnel into the netfilter core 2024-06-19 18:41:59 +02:00
nf_log_syslog.c tcp: extend TCP flags to allow AE bit/ACE field 2025-03-17 13:49:46 +00:00
nf_log.c netfilter: load nf_log_syslog on enabling nf_conntrack_log_invalid 2025-07-25 18:35:41 +02:00
nf_nat_amanda.c
nf_nat_bpf.c bpf: treewide: Annotate BPF kfuncs in BTF 2024-01-31 20:40:56 -08:00
nf_nat_core.c netfilter: conntrack: remove DCCP protocol support 2025-07-03 13:51:39 +02:00
nf_nat_ftp.c
nf_nat_helper.c
nf_nat_irc.c
nf_nat_masquerade.c
nf_nat_ovs.c netfilter: nf_nat: fix action not being set for all ct states 2024-01-03 11:17:17 +01:00
nf_nat_proto.c netfilter: conntrack: remove DCCP protocol support 2025-07-03 13:51:39 +02:00
nf_nat_redirect.c
nf_nat_sip.c
nf_nat_tftp.c
nf_queue.c netfilter: move nf_reinject into nfnetlink_queue modules 2024-02-21 12:03:22 +01:00
nf_sockopt.c
nf_synproxy_core.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
nf_tables_api.c netfilter: nf_tables: reject duplicate device on updates 2025-08-13 08:34:55 +02:00
nf_tables_core.c netfilter: nf_tables: Only use nf_skip_indirect_calls() when MITIGATION_RETPOLINE 2025-03-23 10:53:47 +01:00
nf_tables_offload.c netfilter: nf_tables: Have a list of nf_hook_ops in nft_hook 2025-05-23 13:57:13 +02:00
nf_tables_trace.c netfilter: nf_tables: hide clash bit from userspace 2025-07-14 15:22:35 +02:00
nfnetlink_acct.c
nfnetlink_cthelper.c
nfnetlink_cttimeout.c netfilter: conntrack: remove DCCP protocol support 2025-07-03 13:51:39 +02:00
nfnetlink_hook.c netfilter: nfnetlink_hook: Dump flowtable info 2025-07-25 18:40:01 +02:00
nfnetlink_log.c treewide, timers: Rename from_timer() to timer_container_of() 2025-06-08 09:07:37 +02:00
nfnetlink_osf.c
nfnetlink_queue.c netfilter: nfnetlink_queue: Initialize ctx to avoid memory allocation error 2025-03-23 10:20:33 +01:00
nfnetlink.c Revert "netfilter: nf_tables: Add notifications for hook changes" 2025-07-14 15:22:47 +02:00
nft_bitwise.c netfilter: bitwise: add support for doing AND, OR and XOR directly 2024-11-15 12:07:04 +01:00
nft_byteorder.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
nft_chain_filter.c Revert "netfilter: nf_tables: Add notifications for hook changes" 2025-07-14 15:22:47 +02:00
nft_chain_nat.c
nft_chain_route.c
nft_cmp.c netfilter: nf_tables: pass context structure to nft_parse_register_load 2024-08-20 12:37:24 +02:00
nft_compat.c netfilter: nf_tables: make destruction work queue pernet 2025-03-06 13:35:54 +01:00
nft_connlimit.c netfilter: nf_tables: allow clone callbacks to sleep 2024-05-10 11:13:45 +02:00
nft_counter.c netfilter: nft_counter: Use u64_stats_t for statistic. 2024-09-03 10:47:16 +02:00
nft_ct_fast.c
nft_ct.c netfilter: nft_ct: Use __refcount_inc() for per-CPU nft_ct_pcpu_template. 2025-03-03 13:46:49 +01:00
nft_dup_netdev.c netfilter: nf_tables: pass context structure to nft_parse_register_load 2024-08-20 12:37:24 +02:00
nft_dynset.c netfilter: nft_set: remove indirection from update API call 2025-07-25 18:40:23 +02:00
nft_exthdr.c netfilter: conntrack: remove DCCP protocol support 2025-07-03 13:51:39 +02:00
nft_fib_inet.c
nft_fib_netdev.c
nft_fib.c netfilter: nf_tables: drop unused 3rd argument from validate callback ops 2024-09-03 10:47:17 +02:00
nft_flow_offload.c netfilter: nf_tables: Introduce nft_hook_find_ops{,_rcu}() 2025-05-23 13:57:12 +02:00
nft_fwd_netdev.c netfilter: nf_tables: drop unused 3rd argument from validate callback ops 2024-09-03 10:47:17 +02:00
nft_hash.c netfilter: nf_tables: pass context structure to nft_parse_register_load 2024-08-20 12:37:24 +02:00
nft_immediate.c netfilter: nf_tables: drop unused 3rd argument from validate callback ops 2024-09-03 10:47:17 +02:00
nft_inner.c netfilter: nft_inner: Use nested-BH locking for nft_pcpu_tun_ctx 2025-05-23 13:57:12 +02:00
nft_last.c netfilter: nf_tables: allow clone callbacks to sleep 2024-05-10 11:13:45 +02:00
nft_limit.c netfilter: nf_tables: allow clone callbacks to sleep 2024-05-10 11:13:45 +02:00
nft_log.c netfilter: nf_tables: missing objects with no memcg accounting 2024-09-26 13:03:02 +02:00
nft_lookup.c netfilter: nft_set: remove one argument from lookup and update functions 2025-07-25 18:40:16 +02:00
nft_masq.c netfilter: nf_tables: drop unused 3rd argument from validate callback ops 2024-09-03 10:47:17 +02:00
nft_meta.c netfilter: nf_tables: missing objects with no memcg accounting 2024-09-26 13:03:02 +02:00
nft_nat.c netfilter: nf_tables: drop unused 3rd argument from validate callback ops 2024-09-03 10:47:17 +02:00
nft_numgen.c netfilter: nf_tables: missing objects with no memcg accounting 2024-09-26 13:03:02 +02:00
nft_objref.c netfilter: nft_set: remove one argument from lookup and update functions 2025-07-25 18:40:16 +02:00
nft_osf.c netfilter: nf_tables: drop unused 3rd argument from validate callback ops 2024-09-03 10:47:17 +02:00
nft_payload.c netfilter: nft_payload: sanitize offset and length before calling skb_checksum() 2024-10-31 10:54:49 +01:00
nft_queue.c netfilter: nf_tables: drop unused 3rd argument from validate callback ops 2024-09-03 10:47:17 +02:00
nft_quota.c netfilter: nft_quota: match correctly when the quota just depleted 2025-05-05 13:15:09 +02:00
nft_range.c netfilter: nf_tables: pass context structure to nft_parse_register_load 2024-08-20 12:37:24 +02:00
nft_redir.c netfilter: nf_tables: drop unused 3rd argument from validate callback ops 2024-09-03 10:47:17 +02:00
nft_reject_inet.c netfilter: nf_tables: drop unused 3rd argument from validate callback ops 2024-09-03 10:47:17 +02:00
nft_reject_netdev.c netfilter: nf_tables: drop unused 3rd argument from validate callback ops 2024-09-03 10:47:17 +02:00
nft_reject.c netfilter: nf_tables: drop unused 3rd argument from validate callback ops 2024-09-03 10:47:17 +02:00
nft_rt.c netfilter: nf_tables: drop unused 3rd argument from validate callback ops 2024-09-03 10:47:17 +02:00
nft_set_bitmap.c netfilter: nft_set: remove one argument from lookup and update functions 2025-07-25 18:40:16 +02:00
nft_set_hash.c netfilter: nft_set: remove indirection from update API call 2025-07-25 18:40:23 +02:00
nft_set_pipapo_avx2.c netfilter: nft_set_pipapo: don't return bogus extension pointer 2025-08-07 13:19:26 +02:00
nft_set_pipapo_avx2.h
nft_set_pipapo.c netfilter: nft_set_pipapo: fix null deref for empty set 2025-08-13 08:34:32 +02:00
nft_set_pipapo.h netfilter: nf_set_pipapo: fix initial map fill 2024-07-17 19:00:47 +02:00
nft_set_rbtree.c netfilter: nft_set: remove one argument from lookup and update functions 2025-07-25 18:40:16 +02:00
nft_socket.c netfilter: nft_socket: remove WARN_ON_ONCE with huge level value 2025-08-07 13:19:26 +02:00
nft_synproxy.c netfilter: nf_tables: drop unused 3rd argument from validate callback ops 2024-09-03 10:47:17 +02:00
nft_tproxy.c netfilter: nf_tables: drop unused 3rd argument from validate callback ops 2024-09-03 10:47:17 +02:00
nft_tunnel.c netfilter: nft_tunnel: fix geneve_opt dump 2025-05-23 13:57:12 +02:00
nft_xfrm.c xfrm: add generic iptfs defines and functionality 2024-12-05 10:01:28 +01:00
utils.c netfilter: move nf_reinject into nfnetlink_queue modules 2024-02-21 12:03:22 +01:00
x_tables.c netfilter: Exclude LEGACY TABLES on PREEMPT_RT. 2025-07-25 18:38:50 +02:00
xt_addrtype.c netfilter: xtables: avoid NFPROTO_UNSPEC where needed 2024-10-09 23:20:46 +02:00
xt_AUDIT.c
xt_bpf.c
xt_cgroup.c net: cgroup: Guard users of sock_cgroup_classid() 2025-04-24 16:04:02 +02:00
xt_CHECKSUM.c netfilter: xtables: avoid NFPROTO_UNSPEC where needed 2024-10-09 23:20:46 +02:00
xt_CLASSIFY.c netfilter: xtables: avoid NFPROTO_UNSPEC where needed 2024-10-09 23:20:46 +02:00
xt_cluster.c netfilter: xtables: avoid NFPROTO_UNSPEC where needed 2024-10-09 23:20:46 +02:00
xt_comment.c
xt_connbytes.c netfilter: xtables: avoid NFPROTO_UNSPEC where needed 2024-10-09 23:20:46 +02:00
xt_connlabel.c
xt_connlimit.c netfilter: xtables: avoid NFPROTO_UNSPEC where needed 2024-10-09 23:20:46 +02:00
xt_connmark.c netfilter: xtables: avoid NFPROTO_UNSPEC where needed 2024-10-09 23:20:46 +02:00
xt_CONNSECMARK.c netfilter: xtables: avoid NFPROTO_UNSPEC where needed 2024-10-09 23:20:46 +02:00
xt_conntrack.c
xt_cpu.c
xt_CT.c netfilter: xtables: avoid NFPROTO_UNSPEC where needed 2024-10-09 23:20:46 +02:00
xt_dccp.c
xt_devgroup.c
xt_dscp.c
xt_DSCP.c
xt_ecn.c
xt_esp.c
xt_hashlimit.c netfilter: xt_hashlimit: replace vmalloc calls with kvmalloc 2025-03-12 16:37:48 +01:00
xt_helper.c
xt_hl.c
xt_HL.c
xt_HMARK.c
xt_IDLETIMER.c treewide, timers: Rename from_timer() to timer_container_of() 2025-06-08 09:07:37 +02:00
xt_ipcomp.c
xt_iprange.c
xt_ipvs.c
xt_l2tp.c
xt_LED.c treewide, timers: Rename from_timer() to timer_container_of() 2025-06-08 09:07:37 +02:00
xt_length.c
xt_limit.c
xt_LOG.c
xt_mac.c
xt_mark.c netfilter: xtables: support arpt_mark and ipv6 optstrip for iptables-nft only builds 2025-05-22 17:16:02 +02:00
xt_MASQUERADE.c
xt_multiport.c
xt_nat.c
xt_NETMAP.c
xt_nfacct.c netfilter: xt_nfacct: don't assume acct name is null-terminated 2025-07-25 18:40:43 +02:00
xt_NFLOG.c netfilter: xtables: fix typo causing some targets not to load on IPv6 2024-10-21 11:31:26 +02:00
xt_NFQUEUE.c
xt_osf.c
xt_owner.c
xt_physdev.c netfilter: propagate net to nf_bridge_get_physindev 2024-01-17 12:02:48 +01:00
xt_pkttype.c
xt_policy.c
xt_quota.c
xt_rateest.c
xt_RATEEST.c netfilter: xtables: avoid NFPROTO_UNSPEC where needed 2024-10-09 23:20:46 +02:00
xt_realm.c
xt_recent.c netfilter: xt_recent: Lift restrictions on max hitcount value 2024-06-28 17:57:50 +02:00
xt_REDIRECT.c
xt_repldata.h netfilter: xtables: Use strscpy() instead of strscpy_pad() 2025-03-23 10:53:47 +01:00
xt_sctp.c
xt_SECMARK.c netfilter: xtables: avoid NFPROTO_UNSPEC where needed 2024-10-09 23:20:46 +02:00
xt_set.c
xt_socket.c
xt_state.c
xt_statistic.c
xt_string.c
xt_tcpmss.c
xt_TCPMSS.c
xt_TCPOPTSTRIP.c netfilter: xtables: support arpt_mark and ipv6 optstrip for iptables-nft only builds 2025-05-22 17:16:02 +02:00
xt_tcpudp.c
xt_TEE.c
xt_time.c
xt_TPROXY.c
xt_TRACE.c netfilter: xtables: fix typo causing some targets not to load on IPv6 2024-10-21 11:31:26 +02:00
xt_u32.c