================================ WARNING: inconsistent lock state 4.18.0+ #189 Not tainted -------------------------------- inconsistent {IN-SOFTIRQ-W} -> {SOFTIRQ-ON-W} usage. netlink: 'syz-executor6': attribute type 1 has an invalid length. syz-executor4/9993 [HC0[0]:SC0[0]:HE1:SE1] takes: 00000000300d0b82 (&(&tlocks[i])->rlock){+.?.}, at: spin_lock include/linux/spinlock.h:329 [inline] 00000000300d0b82 (&(&tlocks[i])->rlock){+.?.}, at: ila_del_mapping net/ipv6/ila/ila_xlat.c:290 [inline] 00000000300d0b82 (&(&tlocks[i])->rlock){+.?.}, at: ila_xlat_nl_cmd_del_mapping+0x46b/0xb00 net/ipv6/ila/ila_xlat.c:368 {IN-SOFTIRQ-W} state was registered at: lock_acquire+0x1e4/0x540 kernel/locking/lockdep.c:3924 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline] _raw_spin_lock_bh+0x31/0x40 kernel/locking/spinlock.c:168 spin_lock_bh include/linux/spinlock.h:334 [inline] __rhashtable_insert_fast include/linux/rhashtable.h:596 [inline] rhashtable_lookup_insert_fast include/linux/rhashtable.h:784 [inline] fdb_create+0x5cc/0x1710 net/bridge/br_fdb.c:508 br_fdb_update+0x4e7/0xd40 net/bridge/br_fdb.c:605 br_handle_frame_finish+0xa23/0x1960 net/bridge/br_input.c:97 br_nf_hook_thresh+0x48d/0x5f0 net/bridge/br_netfilter_hooks.c:1011 br_nf_pre_routing_finish_ipv6+0x7bc/0xef0 net/bridge/br_netfilter_ipv6.c:209 NF_HOOK include/linux/netfilter.h:287 [inline] br_nf_pre_routing_ipv6+0x4af/0xac0 net/bridge/br_netfilter_ipv6.c:237 br_nf_pre_routing+0xb33/0x17d0 net/bridge/br_netfilter_hooks.c:494 nf_hook_entry_hookfn include/linux/netfilter.h:119 [inline] nf_hook_slow+0xc2/0x1c0 net/netfilter/core.c:511 nf_hook include/linux/netfilter.h:242 [inline] NF_HOOK include/linux/netfilter.h:285 [inline] br_handle_frame+0xc0d/0x1a20 net/bridge/br_input.c:303 __netif_receive_skb_core+0x1455/0x3af0 net/core/dev.c:4821 __netif_receive_skb_one_core+0xd0/0x200 net/core/dev.c:4890 __netif_receive_skb+0x2c/0x1e0 net/core/dev.c:5002 process_backlog+0x219/0x760 net/core/dev.c:5808 napi_poll net/core/dev.c:6228 [inline] net_rx_action+0x7a5/0x1920 net/core/dev.c:6294 __do_softirq+0x2eb/0xb1e kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x1d6/0x210 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x18e/0x730 arch/x86/kernel/apic/apic.c:1056 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864 __sanitizer_cov_trace_const_cmp4+0xd/0x20 kernel/kcov.c:187 PageCompound include/linux/page-flags.h:156 [inline] PageHuge+0x232/0x2b0 mm/hugetlb.c:1338 page_remove_file_rmap mm/rmap.c:1218 [inline] page_remove_rmap+0x6c1/0x1260 mm/rmap.c:1300 zap_pte_range mm/memory.c:1339 [inline] zap_pmd_range mm/memory.c:1441 [inline] zap_pud_range mm/memory.c:1470 [inline] zap_p4d_range mm/memory.c:1491 [inline] unmap_page_range+0xe7c/0x2140 mm/memory.c:1512 unmap_single_vma+0x1a0/0x310 mm/memory.c:1557 unmap_vmas+0x120/0x1f0 mm/memory.c:1587 exit_mmap+0x2c2/0x5b0 mm/mmap.c:3094 __mmput kernel/fork.c:998 [inline] mmput+0x265/0x620 kernel/fork.c:1019 exec_mmap fs/exec.c:1043 [inline] flush_old_exec+0xbaf/0x2100 fs/exec.c:1275 load_elf_binary+0xa33/0x5610 fs/binfmt_elf.c:869 search_binary_handler+0x17d/0x570 fs/exec.c:1652 exec_binprm fs/exec.c:1694 [inline] __do_execve_file.isra.35+0x1675/0x25e0 fs/exec.c:1818 do_execveat_common fs/exec.c:1865 [inline] do_execve fs/exec.c:1882 [inline] __do_sys_execve fs/exec.c:1963 [inline] __se_sys_execve fs/exec.c:1958 [inline] __x64_sys_execve+0x8f/0xc0 fs/exec.c:1958 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe irq event stamp: 91 hardirqs last enabled at (91): [] restore_regs_and_return_to_kernel+0x0/0x2b hardirqs last disabled at (90): [] interrupt_entry+0xb5/0xf0 arch/x86/entry/entry_64.S:626 softirqs last enabled at (68): [] spin_unlock_bh include/linux/spinlock.h:374 [inline] softirqs last enabled at (68): [] release_sock+0x1ec/0x2c0 net/core/sock.c:2860 softirqs last disabled at (66): [] spin_lock_bh include/linux/spinlock.h:334 [inline] softirqs last disabled at (66): [] release_sock+0x7d/0x2c0 net/core/sock.c:2847 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(&(&tlocks[i])->rlock); lock(&(&tlocks[i])->rlock); *** DEADLOCK *** 1 lock held by syz-executor4/9993: #0: 00000000678fa712 (cb_lock){++++}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:636 stack backtrace: CPU: 1 PID: 9993 Comm: syz-executor4 Not tainted 4.18.0+ #189 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113 print_usage_bug.cold.63+0x320/0x41a kernel/locking/lockdep.c:2546 valid_state kernel/locking/lockdep.c:2559 [inline] mark_lock_irq kernel/locking/lockdep.c:2753 [inline] mark_lock+0x1048/0x19f0 kernel/locking/lockdep.c:3151 mark_irqflags kernel/locking/lockdep.c:3047 [inline] __lock_acquire+0x7ca/0x5020 kernel/locking/lockdep.c:3392 lock_acquire+0x1e4/0x540 kernel/locking/lockdep.c:3924 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] ila_del_mapping net/ipv6/ila/ila_xlat.c:290 [inline] ila_xlat_nl_cmd_del_mapping+0x46b/0xb00 net/ipv6/ila/ila_xlat.c:368 genl_family_rcv_msg+0x8a3/0x1140 net/netlink/genetlink.c:601 genl_rcv_msg+0xc6/0x168 net/netlink/genetlink.c:626 netlink_rcv_skb+0x172/0x440 net/netlink/af_netlink.c:2454 genl_rcv+0x28/0x40 net/netlink/genetlink.c:637 netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline] netlink_unicast+0x5a0/0x760 net/netlink/af_netlink.c:1343 netlink_sendmsg+0xa18/0xfc0 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:631 ___sys_sendmsg+0x7fd/0x930 net/socket.c:2114 __sys_sendmsg+0x11d/0x290 net/socket.c:2152 __do_sys_sendmsg net/socket.c:2161 [inline] __se_sys_sendmsg net/socket.c:2159 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2159 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457089 Code: fd b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007efe91e72c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007efe91e736d4 RCX: 0000000000457089 RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000003 RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004d4088 R14: 00000000004c8ab0 R15: 0000000000000000 netlink: 'syz-executor6': attribute type 1 has an invalid length. netlink: 'syz-executor3': attribute type 4 has an invalid length. IPVS: length: 164 != 24 IPVS: length: 164 != 24 netlink: 'syz-executor7': attribute type 24 has an invalid length. (unnamed net_device) (uninitialized): option ad_actor_sys_prio: mode dependency failed, not supported in mode balance-rr(0) netlink: 'syz-executor7': attribute type 24 has an invalid length. (unnamed net_device) (uninitialized): option ad_actor_sys_prio: mode dependency failed, not supported in mode balance-rr(0) nla_parse: 3 callbacks suppressed netlink: 4 bytes leftover after parsing attributes in process `syz-executor7'. Enabling of bearer <> rejected, illegal name Enabling of bearer <> rejected, illegal name netlink: 4 bytes leftover after parsing attributes in process `syz-executor7'. netlink: 'syz-executor3': attribute type 3 has an invalid length. netlink: 'syz-executor3': attribute type 3 has an invalid length. TCP: request_sock_TCP: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. netlink: 12 bytes leftover after parsing attributes in process `syz-executor2'. device veth0_to_bridge entered promiscuous mode device veth0_to_bridge left promiscuous mode IPVS: set_ctl: invalid protocol: 13 172.20.20.187:0 sctp: [Deprecated]: syz-executor5 (pid 11061) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead IPVS: set_ctl: invalid protocol: 13 172.20.20.187:0 sctp: [Deprecated]: syz-executor5 (pid 11085) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead tls_set_device_offload_rx: netdev lo with no TLS offload tls_set_device_offload_rx: netdev lo with no TLS offload IPVS: set_ctl: invalid protocol: 13 172.20.20.187:0 mip6: mip6_rthdr_init_state: state's mode is not 2: 0 IPVS: set_ctl: invalid protocol: 13 172.20.20.187:0 nf_conntrack: default automatic helper assignment has been turned off for security reasons and CT-based firewall rule not found. Use the iptables CT target to attach helpers instead. IPVS: set_ctl: invalid protocol: 43 172.20.20.14:20000 IPVS: set_ctl: invalid protocol: 43 172.20.20.14:20000 IPVS: set_ctl: invalid protocol: 13 172.20.20.187:0 netlink: 13 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 13 bytes leftover after parsing attributes in process `syz-executor3'. sctp: [Deprecated]: syz-executor5 (pid 11354) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead