netlink: 'syz-executor4': attribute type 8 has an invalid length. ================================ WARNING: inconsistent lock state 4.18.0+ #189 Not tainted -------------------------------- inconsistent {IN-SOFTIRQ-W} -> {SOFTIRQ-ON-W} usage. syz-executor4/32686 [HC0[0]:SC0[0]:HE1:SE1] takes: 0000000063819133 (&(&tlocks[i])->rlock){+.?.}, at: spin_lock include/linux/spinlock.h:329 [inline] 0000000063819133 (&(&tlocks[i])->rlock){+.?.}, at: ila_add_mapping net/ipv6/ila/ila_xlat.c:233 [inline] 0000000063819133 (&(&tlocks[i])->rlock){+.?.}, at: ila_xlat_nl_cmd_add_mapping+0x6bb/0x17e0 net/ipv6/ila/ila_xlat.c:355 netlink: 20 bytes leftover after parsing attributes in process `syz-executor2'. {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 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1047 do_softirq.part.18+0x157/0x1a0 kernel/softirq.c:336 do_softirq arch/x86/include/asm/preempt.h:23 [inline] __local_bh_enable_ip+0x1ee/0x230 kernel/softirq.c:189 local_bh_enable include/linux/bottom_half.h:32 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:723 [inline] ip6_finish_output2+0xce8/0x2820 net/ipv6/ip6_output.c:121 ip6_finish_output+0x5fe/0xbc0 net/ipv6/ip6_output.c:154 NF_HOOK_COND include/linux/netfilter.h:276 [inline] ip6_output+0x234/0x9d0 net/ipv6/ip6_output.c:171 dst_output include/net/dst.h:444 [inline] NF_HOOK include/linux/netfilter.h:287 [inline] mld_sendpack+0xaeb/0xfc0 net/ipv6/mcast.c:1683 mld_send_initial_cr.part.29+0x114/0x160 net/ipv6/mcast.c:2100 mld_send_initial_cr net/ipv6/mcast.c:2113 [inline] ipv6_mc_dad_complete+0x1a8/0x1f0 net/ipv6/mcast.c:2107 addrconf_dad_completed+0x9da/0xbf0 net/ipv6/addrconf.c:4116 addrconf_dad_work+0x77b/0x1310 net/ipv6/addrconf.c:4047 process_one_work+0xc73/0x1ba0 kernel/workqueue.c:2153 worker_thread+0x189/0x13c0 kernel/workqueue.c:2296 IPVS: ftp: loaded support on port[0] = 21 kthread+0x35a/0x420 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413 irq event stamp: 161 hardirqs last enabled at (161): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] hardirqs last enabled at (161): [] _raw_spin_unlock_irqrestore+0x74/0xc0 kernel/locking/spinlock.c:184 hardirqs last disabled at (160): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (160): [] _raw_spin_lock_irqsave+0x74/0xc0 kernel/locking/spinlock.c:152 softirqs last enabled at (128): [] __do_softirq+0x787/0xb1e kernel/softirq.c:318 softirqs last disabled at (115): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (115): [] irq_exit+0x1d6/0x210 kernel/softirq.c:412 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-executor4/32686: #0: 00000000749d8141 (cb_lock){++++}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:636 stack backtrace: CPU: 0 PID: 32686 Comm: syz-executor4 Not tainted 4.18.0+ #189 IPVS: ftp: loaded support on port[0] = 21 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 netlink: 'syz-executor2': attribute type 15 has an invalid length. netlink: 'syz-executor2': attribute type 15 has an invalid length. 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_add_mapping net/ipv6/ila/ila_xlat.c:233 [inline] ila_xlat_nl_cmd_add_mapping+0x6bb/0x17e0 net/ipv6/ila/ila_xlat.c:355 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 netlink: 'syz-executor4': attribute type 8 has an invalid length. 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:00007f93cfe72c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f93cfe736d4 RCX: 0000000000457089 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004d4088 R14: 00000000004c8ab0 R15: 0000000000000000 netlink: 20 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 'syz-executor5': attribute type 3 has an invalid length. netlink: 'syz-executor5': attribute type 6 has an invalid length. netlink: 'syz-executor5': attribute type 3 has an invalid length. netlink: 'syz-executor5': attribute type 6 has an invalid length. kernel msg: ebtables bug: please report to author: Wrong len argument kernel msg: ebtables bug: please report to author: Wrong len argument device ip6gre0 entered promiscuous mode kernel msg: ebtables bug: please report to author: Wrong len argument IPVS: set_ctl: invalid protocol: 43 172.20.20.23:20002 kernel msg: ebtables bug: please report to author: Wrong len argument IPVS: set_ctl: invalid protocol: 43 172.20.20.23:20002 IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready kernel msg: ebtables bug: please report to author: Entries_size never zero kernel msg: ebtables bug: please report to author: Entries_size never zero netlink: 8 bytes leftover after parsing attributes in process `syz-executor0'. IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready netlink: 8 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 'syz-executor1': attribute type 1 has an invalid length. IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready netlink: 4 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 'syz-executor1': attribute type 1 has an invalid length. netlink: 4 bytes leftover after parsing attributes in process `syz-executor1'. IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready netlink: 4 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 20 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 20 bytes leftover after parsing attributes in process `syz-executor3'. IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready IPVS: ftp: loaded support on port[0] = 21 IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready sctp: [Deprecated]: syz-executor2 (pid 1105) Use of int in maxseg socket option. Use struct sctp_assoc_value instead IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 1142 Comm: syz-executor1 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 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0xa/0x11 lib/fault-inject.c:149 __should_failslab+0x124/0x180 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1557 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3378 [inline] kmem_cache_alloc+0x47/0x760 mm/slab.c:3552 dst_alloc+0xbb/0x1d0 net/core/dst.c:105 rt_dst_alloc+0x102/0x520 net/ipv4/route.c:1576 __mkroute_output net/ipv4/route.c:2275 [inline] ip_route_output_key_hash_rcu+0xa5b/0x3500 net/ipv4/route.c:2502 ip_route_output_key_hash+0x242/0x3b0 net/ipv4/route.c:2331 __ip_route_output_key include/net/route.h:124 [inline] ip_route_output_flow+0x28/0xc0 net/ipv4/route.c:2586 udp_sendmsg+0x22cd/0x38e0 net/ipv4/udp.c:1082 inet_sendmsg+0x1a1/0x690 net/ipv4/af_inet.c:798 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:631 __sys_sendto+0x3d7/0x670 net/socket.c:1786 __do_sys_sendto net/socket.c:1798 [inline] __se_sys_sendto net/socket.c:1794 [inline] __x64_sys_sendto+0xe1/0x1a0 net/socket.c:1794 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:00007ff68f997c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007ff68f9986d4 RCX: 0000000000457089 RDX: 000000000000fdc7 RSI: 0000000020762fff RDI: 0000000000000003 RBP: 00000000009300a0 R08: 000000002057bff0 R09: 0000000000000010 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 R13: 00000000004d4178 R14: 00000000004c8b48 R15: 0000000000000000 IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready