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Yuan Tan 329f0b9b48 netfilter: xt_IDLETIMER: reject rev0 reuse of ALARM timer labels 
IDLETIMER revision 0 rules reuse existing timers by label and always call
mod_timer() on timer->timer.

If the label was created first by revision 1 with XT_IDLETIMER_ALARM,
the object uses alarm timer semantics and timer->timer is never initialized.
Reusing that object from revision 0 causes mod_timer() on an uninitialized
timer_list, triggering debugobjects warnings and possible panic when
panic_on_warn=1.

Fix this by rejecting revision 0 rule insertion when an existing timer with
the same label is of ALARM type.

Fixes: 68983a354a ("netfilter: xtables: Add snapshot of hardidletimer target")
Co-developed-by: Yifan Wu <yifanwucs@gmail.com>
Signed-off-by: Yifan Wu <yifanwucs@gmail.com>
Co-developed-by: Juefei Pu <tomapufckgml@gmail.com>
Signed-off-by: Juefei Pu <tomapufckgml@gmail.com>
Signed-off-by: Yuan Tan <tanyuan98@outlook.com>
Signed-off-by: Xin Liu <dstsmallbird@foxmail.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
2026-03-10 14:10:43 +01:00
..
ipset
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
ipvs
Convert remaining multi-line kmalloc_obj/flex GFP_KERNEL uses
2026-02-22 08:26:33 -08:00
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: flowtable: move path discovery infrastructure to its own file
2025-11-27 23:59:43 +00:00
nf_bpf_link.c
treewide: Replace kmalloc with kmalloc_obj for non-scalar types
2026-02-21 01:02:28 -08:00
nf_conncount.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
nf_conntrack_acct.c
…
nf_conntrack_amanda.c
netfilter: annotate NAT helper hook pointers with __rcu
2026-02-17 15:04:20 +01:00
nf_conntrack_bpf.c
Merge tag 'net-next-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
2026-02-11 19:31:52 -08:00
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
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
nf_conntrack_ecache.c
net: replace use of system_wq with system_percpu_wq
2025-09-22 17:40:30 -07:00
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
netfilter: annotate NAT helper hook pointers with __rcu
2026-02-17 15:04:20 +01:00
nf_conntrack_h323_asn1.c
netfilter: nf_conntrack_h323: fix OOB read in decode_choice()
2026-02-26 12:50:42 +01:00
nf_conntrack_h323_main.c
netfilter: nf_conntrack_h323: don't pass uninitialised l3num value
2026-02-17 15:04:20 +01:00
nf_conntrack_h323_types.c
…
nf_conntrack_helper.c
netfilter: conntrack: helper: Replace -EEXIST by -EBUSY
2025-08-27 11:53:38 +02:00
nf_conntrack_irc.c
netfilter: annotate NAT helper hook pointers with __rcu
2026-02-17 15:04:20 +01:00
nf_conntrack_labels.c
netfilter: conntrack: switch connlabels to atomic_t
2023-10-24 13:16:30 +02:00
nf_conntrack_netbios_ns.c
…
nf_conntrack_netlink.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
nf_conntrack_ovs.c
net/ipv6: Introduce payload_len helpers
2026-02-06 20:50:03 -08:00
nf_conntrack_pptp.c
…
nf_conntrack_proto_generic.c
netfilter: nf_conntrack: Add allow_clash to generic protocol handler
2026-01-20 16:23:37 +01:00
nf_conntrack_proto_gre.c
treewide: Replace kmalloc with kmalloc_obj for non-scalar types
2026-02-21 01:02:28 -08:00
nf_conntrack_proto_icmp.c
netfilter: nf_conntrack: enable icmp clash support
2026-01-20 16:23:37 +01:00
nf_conntrack_proto_icmpv6.c
netfilter: nf_conntrack: enable icmp clash support
2026-01-20 16:23:37 +01:00
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
netfilter: annotate NAT helper hook pointers with __rcu
2026-02-17 15:04:20 +01:00
nf_conntrack_standalone.c
netfilter: conntrack: disable 0 value for conntrack_max setting
2025-10-30 12:52:45 +01:00
nf_conntrack_tftp.c
netfilter: annotate NAT helper hook pointers with __rcu
2026-02-17 15:04:20 +01:00
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
bpf: Remove redundant KF_TRUSTED_ARGS flag from all kfuncs
2026-01-02 12:04:28 -08:00
nf_flow_table_core.c
netfilter: flowtable: dedicated slab for flow entry
2026-02-06 13:34:55 +01:00
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
netfilter: flowtable: Add IP6IP6 tx sw acceleration
2026-01-29 09:52:06 +01:00
nf_flow_table_offload.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
nf_flow_table_path.c
netfilter: nf_conntrack: don't rely on implicit includes
2026-01-20 16:23:37 +01:00
nf_flow_table_procfs.c
…
nf_flow_table_xdp.c
treewide: Replace kmalloc with kmalloc_obj for non-scalar types
2026-02-21 01:02:28 -08:00
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
net/ipv6: Introduce payload_len helpers
2026-02-06 20:50:03 -08:00
nf_log.c
treewide: Replace kmalloc with kmalloc_obj for non-scalar types
2026-02-21 01:02:28 -08:00
nf_nat_amanda.c
…
nf_nat_bpf.c
bpf: Remove redundant KF_TRUSTED_ARGS flag from all kfuncs
2026-01-02 12:04:28 -08:00
nf_nat_core.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
nf_nat_ftp.c
…
nf_nat_helper.c
…
nf_nat_irc.c
…
nf_nat_masquerade.c
treewide: Replace kmalloc with kmalloc_obj for non-scalar types
2026-02-21 01:02:28 -08:00
nf_nat_ovs.c
netfilter: nf_conntrack: don't rely on implicit includes
2026-01-20 16:23:37 +01:00
nf_nat_proto.c
netfilter: nf_conntrack: don't rely on implicit includes
2026-01-20 16:23:37 +01:00
nf_nat_redirect.c
netfilter: nat: fix ipv6 nat redirect with mapped and scoped addresses
2023-11-08 16:40:30 +01:00
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
netfilter: don't include xt and nftables.h in unrelated subsystems
2026-01-20 16:23:37 +01:00
nf_tables_api.c
netfilter: nf_tables: always walk all pending catchall elements
2026-03-10 14:10:42 +01:00
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
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
nf_tables_trace.c
netfilter: nf_tables: hide clash bit from userspace
2025-07-14 15:22:35 +02:00
nfnetlink_acct.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
nfnetlink_cthelper.c
netfilter: nfnetlink_cthelper: fix OOB read in nfnl_cthelper_dump_table()
2026-03-10 14:10:42 +01:00
nfnetlink_cttimeout.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
nfnetlink_hook.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
nfnetlink_log.c
treewide: Replace kmalloc with kmalloc_obj for non-scalar types
2026-02-21 01:02:28 -08:00
nfnetlink_osf.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
nfnetlink_queue.c
netfilter: nfnetlink_queue: fix entry leak in bridge verdict error path
2026-03-10 14:10:42 +01:00
nfnetlink.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
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
netfilter: nf_tables: Fix for duplicate device in netdev hooks
2026-03-10 14:10:42 +01:00
nft_chain_nat.c
netfilter: add missing module descriptions
2023-11-08 13:52:32 +01:00
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
treewide: Replace kmalloc with kmalloc_obj for non-scalar types
2026-02-21 01:02:28 -08:00
nft_connlimit.c
treewide: Replace kmalloc with kmalloc_obj for non-scalar types
2026-02-21 01:02:28 -08:00
nft_counter.c
netfilter: nft_counter: serialize reset with spinlock
2026-02-17 15:04:20 +01:00
nft_ct_fast.c
…
nft_ct.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
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_conntrack: don't rely on implicit includes
2026-01-20 16:23:37 +01:00
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
treewide: Replace kmalloc with kmalloc_obj for non-scalar types
2026-02-21 01:02:28 -08:00
nft_limit.c
treewide: Replace kmalloc with kmalloc_obj for non-scalar types
2026-02-21 01:02:28 -08:00
nft_log.c
audit: add audit_log_nf_skb helper function
2025-12-16 11:04:14 -05:00
nft_lookup.c
netfilter: nf_tables: use C99 struct initializer for nft_set_iter
2025-10-30 12:52:45 +01:00
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
treewide: Replace kmalloc with kmalloc_obj for non-scalar types
2026-02-21 01:02:28 -08:00
nft_objref.c
netfilter: nft_objref: validate objref and objrefmap expressions
2025-10-08 13:17:25 +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: extend offset to 65535 bytes
2025-09-02 15:28:18 +02:00
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
treewide: Replace kmalloc with kmalloc_obj for non-scalar types
2026-02-21 01:02:28 -08:00
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_bitmap: fix lockdep splat due to missing annotation
2025-09-10 20:28:24 +02:00
nft_set_hash.c
netfilter: nf_tables: clone set on flush only
2026-03-05 13:22:37 +01:00
nft_set_pipapo_avx2.c
netfilter: nft_set_pipapo_avx2: fix skip of expired entries
2025-09-24 11:50:28 +02:00
nft_set_pipapo_avx2.h
netfilter: nft_set_pipapo: use avx2 algorithm for insertions too
2025-08-20 13:52:37 +02:00
nft_set_pipapo.c
netfilter: nft_set_pipapo: fix stack out-of-bounds read in pipapo_drop()
2026-03-10 14:10:42 +01:00
nft_set_pipapo.h
netfilter: nft_set_pipapo: split gc into unlink and reclaim phase
2026-03-05 13:22:37 +01:00
nft_set_rbtree.c
netfilter: nf_tables: clone set on flush only
2026-03-05 13:22:37 +01:00
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: don't include xt and nftables.h in unrelated subsystems
2026-01-20 16:23:37 +01:00
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
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
xt_addrtype.c
netfilter: xtables: avoid NFPROTO_UNSPEC where needed
2024-10-09 23:20:46 +02:00
xt_AUDIT.c
audit: add audit_log_nf_skb helper function
2025-12-16 11:04:14 -05:00
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: nf_conncount: rework API to use sk_buff directly
2025-11-28 00:05:49 +00:00
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
netfilter: x_tables: guard option walkers against 1-byte tail reads
2026-03-10 14:10:42 +01:00
xt_devgroup.c
…
xt_dscp.c
…
xt_DSCP.c
…
xt_ecn.c
…
xt_esp.c
…
xt_hashlimit.c
Convert 'alloc_flex' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
xt_helper.c
…
xt_hl.c
…
xt_HL.c
…
xt_HMARK.c
…
xt_IDLETIMER.c
netfilter: xt_IDLETIMER: reject rev0 reuse of ALARM timer labels
2026-03-10 14:10:43 +01:00
xt_ipcomp.c
…
xt_iprange.c
…
xt_ipvs.c
…
xt_l2tp.c
…
xt_LED.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
xt_length.c
…
xt_limit.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
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
netfilter: xt_owner: Fix for unsafe access of sk->sk_socket
2023-12-06 17:52:15 +01:00
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
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
xt_rateest.c
…
xt_RATEEST.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
xt_realm.c
…
xt_recent.c
Convert 'alloc_flex' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
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
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
xt_string.c
…
xt_tcpmss.c
netfilter: xt_tcpmss: check remaining length before reading optlen
2026-01-20 16:23:38 +01:00
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
netfilter: x_tables: guard option walkers against 1-byte tail reads
2026-03-10 14:10:42 +01:00
xt_TEE.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
xt_time.c
netfilter: xt_time: use is_leap_year() helper
2026-01-29 09:52:07 +01:00
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
…