Bluetooth: hci11 command 0x0406 tx timeout Bluetooth: hci13 command 0x0406 tx timeout Bluetooth: hci14 command 0x0406 tx timeout Bluetooth: hci19 command 0x0409 tx timeout Bluetooth: hci19 command 0x041b tx timeout BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 263s! Showing busy workqueues and worker pools: workqueue events: flags=0x0 pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=52/256 refcnt=53 in-flight: 3627:rtc_timer_do_work pending: wait_rcu_exp_gp, free_obj_work, defense_work_handler, defense_work_handler, cache_reap, defense_work_handler, defense_work_handler, rtc_timer_do_work, defense_work_handler, macvlan_process_broadcast, macvlan_process_broadcast, macvlan_process_broadcast, macvlan_process_broadcast, macvlan_process_broadcast, macvlan_process_broadcast, macvlan_process_broadcast, macvlan_process_broadcast, rht_deferred_worker, rfkill_any_led_trigger_worker, hci_cmd_timeout, vhci_open_timeout, bpf_prog_free_deferred, bpf_prog_free_deferred, l2cap_info_timeout, vhci_open_timeout, key_garbage_collector, hci_cmd_timeout, hci_cmd_timeout, hci_cmd_timeout, l2cap_info_timeout, l2cap_info_timeout, l2cap_info_timeout, hci_cmd_timeout, hci_cmd_timeout, hci_cmd_timeout, hci_cmd_timeout, hci_cmd_timeout , hci_cmd_timeout, bpf_prog_free_deferred, vhci_open_timeout, l2cap_info_timeout, hci_cmd_timeout, l2cap_info_timeout, vhci_open_timeout, vhci_open_timeout, hci_cmd_timeout, hci_cmd_timeout, hci_cmd_timeout, l2cap_info_timeout, switchdev_deferred_process_work, bpf_prog_free_deferred workqueue events_long: flags=0x0 pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 pending: gc_worker workqueue events_unbound: flags=0x2 pwq 4: cpus=0-1 flags=0x4 nice=0 active=4/512 refcnt=7 in-flight: 9390:fsnotify_mark_destroy_workfn fsnotify_mark_destroy_workfn, 5:fsnotify_connector_destroy_workfn fsnotify_connector_destroy_workfn workqueue events_freezable: flags=0x4 pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 pending: update_balloon_stats_func workqueue events_power_efficient: flags=0x80 pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=2/256 refcnt=3 pending: process_srcu, neigh_periodic_work workqueue mm_percpu_wq: flags=0x8 pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 pending: vmstat_update workqueue dm_bufio_cache: flags=0x8 pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 pending: work_fn workqueue ipv6_addrconf: flags=0x40008 pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/1 refcnt=2 pending: addrconf_verify_work workqueue bat_events: flags=0xe000a pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/1 refcnt=9 pending: batadv_iv_send_outstanding_bat_ogm_packet delayed: batadv_tt_purge, batadv_nc_worker, batadv_nc_worker, batadv_nc_worker, batadv_nc_worker pool 2: cpus=1 node=0 flags=0x0 nice=0 hung=263s workers=5 idle: 24 19 9221 7686 pool 4: cpus=0-1 flags=0x4 nice=0 hung=0s workers=7 idle: 3566 35 3563 23 158 INFO: task kworker/u4:0:5 blocked for more than 140 seconds. Not tainted 4.14.290-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/u4:0 D28776 5 2 0x80000000 Workqueue: events_unbound fsnotify_connector_destroy_workfn Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3387 schedule+0x8d/0x1b0 kernel/sched/core.c:3431 schedule_timeout+0x80a/0xe90 kernel/time/timer.c:1724 do_wait_for_common kernel/sched/completion.c:91 [inline] __wait_for_common kernel/sched/completion.c:112 [inline] wait_for_common+0x272/0x430 kernel/sched/completion.c:123 __synchronize_srcu+0x10a/0x1d0 kernel/rcu/srcutree.c:898 fsnotify_connector_destroy_workfn+0x49/0xa0 fs/notify/mark.c:156 process_one_work+0x793/0x14a0 kernel/workqueue.c:2117 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2251 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 INFO: task kworker/u4:6:9390 blocked for more than 140 seconds. Not tainted 4.14.290-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/u4:6 D28168 9390 2 0x80000000 Workqueue: events_unbound fsnotify_mark_destroy_workfn Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3387 schedule+0x8d/0x1b0 kernel/sched/core.c:3431 schedule_timeout+0x80a/0xe90 kernel/time/timer.c:1724 do_wait_for_common kernel/sched/completion.c:91 [inline] __wait_for_common kernel/sched/completion.c:112 [inline] wait_for_common+0x272/0x430 kernel/sched/completion.c:123 __synchronize_srcu+0x10a/0x1d0 kernel/rcu/srcutree.c:898 fsnotify_mark_destroy_workfn+0xed/0x2e0 fs/notify/mark.c:757 process_one_work+0x793/0x14a0 kernel/workqueue.c:2117 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2251 kthread+0x30d/0x420 kernel/kthread.c:232 Bluetooth: hci20 command 0x0409 tx timeout ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 INFO: task syz-executor.2:9843 blocked for more than 140 seconds. Not tainted 4.14.290-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D28832 9843 8012 0x00000004 Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3387 schedule+0x8d/0x1b0 kernel/sched/core.c:3431 _synchronize_rcu_expedited+0x522/0x770 kernel/rcu/tree_exp.h:615 synchronize_rcu+0x98/0x130 kernel/rcu/tree_plugin.h:762 nf_tables_abort+0x12ff/0x2360 net/netfilter/nf_tables_api.c:5366 nfnetlink_rcv_batch net/netfilter/nfnetlink.c:448 [inline] nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:495 [inline] nfnetlink_rcv+0x13e3/0x1da0 net/netfilter/nfnetlink.c:513 netlink_unicast_kernel net/netlink/af_netlink.c:1296 [inline] netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1322 netlink_sendmsg+0x648/0xbc0 net/netlink/af_netlink.c:1893 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 ___sys_sendmsg+0x6c8/0x800 net/socket.c:2062 __sys_sendmsg+0xa3/0x120 net/socket.c:2096 SYSC_sendmsg net/socket.c:2107 [inline] SyS_sendmsg+0x27/0x40 net/socket.c:2103 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f316f4d1279 RSP: 002b:00007f316de46168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f316f5e3f80 RCX: 00007f316f4d1279 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 00007f316f52b189 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd45b3c05f R14: 00007f316de46300 R15: 0000000000022000 INFO: task syz-executor.5:9857 blocked for more than 140 seconds. Not tainted 4.14.290-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D28776 9857 8013 0x00000004 Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3387 schedule+0x8d/0x1b0 kernel/sched/core.c:3431 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3489 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893 nfnl_lock net/netfilter/nfnetlink.c:61 [inline] nfnetlink_rcv_msg+0x726/0xc00 net/netfilter/nfnetlink.c:209 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2454 nfnetlink_rcv+0x1ab/0x1da0 net/netfilter/nfnetlink.c:515 netlink_unicast_kernel net/netlink/af_netlink.c:1296 [inline] netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1322 netlink_sendmsg+0x648/0xbc0 net/netlink/af_netlink.c:1893 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 ___sys_sendmsg+0x6c8/0x800 net/socket.c:2062 __sys_sendmsg+0xa3/0x120 net/socket.c:2096 SYSC_sendmsg net/socket.c:2107 [inline] SyS_sendmsg+0x27/0x40 net/socket.c:2103 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f99c0c1d279 RSP: 002b:00007f99bf592168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f99c0d2ff80 RCX: 00007f99c0c1d279 RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000003 RBP: 00007f99c0c77189 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd3f2a6d0f R14: 00007f99bf592300 R15: 0000000000022000 INFO: task syz-executor.4:9858 blocked for more than 140 seconds. Not tainted 4.14.290-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D29184 9858 8014 0x00000004 Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3387 schedule+0x8d/0x1b0 kernel/sched/core.c:3431 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3489 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893 nfnl_lock net/netfilter/nfnetlink.c:61 [inline] nfnetlink_rcv_batch net/netfilter/nfnetlink.c:303 [inline] nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:495 [inline] nfnetlink_rcv+0x554/0x1da0 net/netfilter/nfnetlink.c:513 netlink_unicast_kernel net/netlink/af_netlink.c:1296 [inline] netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1322 netlink_sendmsg+0x648/0xbc0 net/netlink/af_netlink.c:1893 Bluetooth: hci21 command 0x0409 tx timeout sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 ___sys_sendmsg+0x6c8/0x800 net/socket.c:2062 __sys_sendmsg+0xa3/0x120 net/socket.c:2096 SYSC_sendmsg net/socket.c:2107 [inline] SyS_sendmsg+0x27/0x40 net/socket.c:2103 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f8a8999d279 RSP: 002b:00007f8a88312168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f8a89aaff80 RCX: 00007f8a8999d279 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 00007f8a899f7189 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc8b2dbd0f R14: 00007f8a88312300 R15: 0000000000022000 INFO: task syz-executor.0:9859 blocked for more than 140 seconds. Not tainted 4.14.290-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D29184 9859 8006 0x00000004 Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3387 schedule+0x8d/0x1b0 kernel/sched/core.c:3431 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3489 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893 nfnl_lock net/netfilter/nfnetlink.c:61 [inline] nfnetlink_rcv_batch net/netfilter/nfnetlink.c:303 [inline] nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:495 [inline] nfnetlink_rcv+0x554/0x1da0 net/netfilter/nfnetlink.c:513 netlink_unicast_kernel net/netlink/af_netlink.c:1296 [inline] netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1322 Bluetooth: hci19 command 0x040f tx timeout netlink_sendmsg+0x648/0xbc0 net/netlink/af_netlink.c:1893 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 ___sys_sendmsg+0x6c8/0x800 net/socket.c:2062 __sys_sendmsg+0xa3/0x120 net/socket.c:2096 SYSC_sendmsg net/socket.c:2107 [inline] SyS_sendmsg+0x27/0x40 net/socket.c:2103 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7feb6a96a279 RSP: 002b:00007feb692df168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007feb6aa7cf80 RCX: 00007feb6a96a279 RDX: 0000000000000010 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 00007feb6a9c4189 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffcb4ff105f R14: 00007feb692df300 R15: 0000000000022000 INFO: task syz-executor.3:9861 blocked for more than 140 seconds. Not tainted 4.14.290-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D29184 9861 8016 0x00000004 Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3387 schedule+0x8d/0x1b0 kernel/sched/core.c:3431 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3489 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893 nfnl_lock net/netfilter/nfnetlink.c:61 [inline] nfnetlink_rcv_batch net/netfilter/nfnetlink.c:303 [inline] nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:495 [inline] nfnetlink_rcv+0x554/0x1da0 net/netfilter/nfnetlink.c:513 netlink_unicast_kernel net/netlink/af_netlink.c:1296 [inline] netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1322 netlink_sendmsg+0x648/0xbc0 net/netlink/af_netlink.c:1893 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 ___sys_sendmsg+0x6c8/0x800 net/socket.c:2062 __sys_sendmsg+0xa3/0x120 net/socket.c:2096 SYSC_sendmsg net/socket.c:2107 [inline] SyS_sendmsg+0x27/0x40 net/socket.c:2103 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7fc78b13e279 RSP: 002b:00007fc789ab3168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fc78b250f80 RCX: 00007fc78b13e279 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 00007fc78b198189 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffcc7bf2d4f R14: 00007fc789ab3300 R15: 0000000000022000 INFO: task syz-executor.1:9877 blocked for more than 140 seconds. Not tainted 4.14.290-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D29184 9877 8015 0x00000004 Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3387 schedule+0x8d/0x1b0 kernel/sched/core.c:3431 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3489 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893 Bluetooth: hci22 command 0x0409 tx timeout nfnl_lock net/netfilter/nfnetlink.c:61 [inline] nfnetlink_rcv_batch net/netfilter/nfnetlink.c:303 [inline] nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:495 [inline] nfnetlink_rcv+0x554/0x1da0 net/netfilter/nfnetlink.c:513 netlink_unicast_kernel net/netlink/af_netlink.c:1296 [inline] netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1322 netlink_sendmsg+0x648/0xbc0 net/netlink/af_netlink.c:1893 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 ___sys_sendmsg+0x6c8/0x800 net/socket.c:2062 __sys_sendmsg+0xa3/0x120 net/socket.c:2096 SYSC_sendmsg net/socket.c:2107 [inline] SyS_sendmsg+0x27/0x40 net/socket.c:2103 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7fab0bd98279 RSP: 002b:00007fab0a70d168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fab0beaaf80 RCX: 00007fab0bd98279 RDX: 0000000000000000 RSI: 0000000020000480 RDI: 0000000000000003 RBP: 00007fab0bdf2189 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffbed71a1f R14: 00007fab0a70d300 R15: 0000000000022000 INFO: task syz-executor.2:9880 blocked for more than 140 seconds. Not tainted 4.14.290-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D27528 9880 1 0x00000004 Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3387 schedule+0x8d/0x1b0 kernel/sched/core.c:3431 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3489 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893 nft_register_afinfo+0x63/0x190 net/netfilter/nf_tables_api.c:39 nf_tables_inet_init_net+0xb5/0x140 net/netfilter/nf_tables_inet.c:48 ops_init+0xaa/0x3e0 net/core/net_namespace.c:118 setup_net+0x22f/0x530 net/core/net_namespace.c:298 copy_net_ns+0x19b/0x440 net/core/net_namespace.c:422 create_new_namespaces+0x375/0x720 kernel/nsproxy.c:107 unshare_nsproxy_namespaces+0xa1/0x1d0 kernel/nsproxy.c:206 SYSC_unshare kernel/fork.c:2413 [inline] SyS_unshare+0x308/0x7f0 kernel/fork.c:2363 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f9b5a79e837 RSP: 002b:00007ffd64dcde38 EFLAGS: 00000202 ORIG_RAX: 0000000000000110 RAX: ffffffffffffffda RBX: 00007ffd64dce478 RCX: 00007f9b5a79e837 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000040000000 RBP: 00000000ffffffff R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000006 R13: 00007ffd64dcdf10 R14: 00007f9b5a8b04f8 R15: 0000000000000006 Showing all locks held in the system: 2 locks held by kworker/u4:0/5: #0: ("events_unbound"){+.+.}, at: [] process_one_work+0x6b0/0x14a0 kernel/workqueue.c:2088 #1: (connector_reaper_work){+.+.}, at: [] process_one_work+0x6e6/0x14a0 kernel/workqueue.c:2092 1 lock held by khungtaskd/1534: #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4548 2 locks held by kworker/u4:6/9390: #0: ("events_unbound"){+.+.}, at: [] process_one_work+0x6b0/0x14a0 kernel/workqueue.c:2088 #1: ((reaper_work).work){+.+.}, at: [] process_one_work+0x6e6/0x14a0 kernel/workqueue.c:2092 2 locks held by syz-executor.2/9843: #0: (&table[i].mutex){+.+.}, at: [] nfnl_lock net/netfilter/nfnetlink.c:61 [inline] #0: (&table[i].mutex){+.+.}, at: [] nfnetlink_rcv_batch net/netfilter/nfnetlink.c:303 [inline] #0: (&table[i].mutex){+.+.}, at: [] nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:495 [inline] #0: (&table[i].mutex){+.+.}, at: [] nfnetlink_rcv+0x554/0x1da0 net/netfilter/nfnetlink.c:513 #1: (rcu_preempt_state.exp_mutex){+.+.}, at: [] exp_funnel_lock kernel/rcu/tree_exp.h:272 [inline] #1: (rcu_preempt_state.exp_mutex){+.+.}, at: [] _synchronize_rcu_expedited+0x2c2/0x770 kernel/rcu/tree_exp.h:596 1 lock held by syz-executor.5/9857: #0: (&table[i].mutex){+.+.}, at: [] nfnl_lock net/netfilter/nfnetlink.c:61 [inline] #0: (&table[i].mutex){+.+.}, at: [] nfnetlink_rcv_msg+0x726/0xc00 net/netfilter/nfnetlink.c:209 1 lock held by syz-executor.4/9858: #0: (&table[i].mutex){+.+.}, at: [] nfnl_lock net/netfilter/nfnetlink.c:61 [inline] #0: (&table[i].mutex){+.+.}, at: [] nfnetlink_rcv_batch net/netfilter/nfnetlink.c:303 [inline] #0: (&table[i].mutex){+.+.}, at: [] nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:495 [inline] #0: (&table[i].mutex){+.+.}, at: [] nfnetlink_rcv+0x554/0x1da0 net/netfilter/nfnetlink.c:513 1 lock held by syz-executor.0/9859: #0: (&table[i].mutex){+.+.}, at: [] nfnl_lock net/netfilter/nfnetlink.c:61 [inline] #0: (&table[i].mutex){+.+.}, at: [] nfnetlink_rcv_batch net/netfilter/nfnetlink.c:303 [inline] #0: (&table[i].mutex){+.+.}, at: [] nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:495 [inline] #0: (&table[i].mutex){+.+.}, at: [] nfnetlink_rcv+0x554/0x1da0 net/netfilter/nfnetlink.c:513 1 lock held by syz-executor.3/9861: #0: (&table[i].mutex){+.+.}, at: [] nfnl_lock net/netfilter/nfnetlink.c:61 [inline] #0: (&table[i].mutex){+.+.}, at: [] nfnetlink_rcv_batch net/netfilter/nfnetlink.c:303 [inline] #0: (&table[i].mutex){+.+.}, at: [] nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:495 [inline] #0: (&table[i].mutex){+.+.}, at: [] nfnetlink_rcv+0x554/0x1da0 net/netfilter/nfnetlink.c:513 1 lock held by syz-executor.1/9877: #0: (&table[i].mutex){+.+.}, at: [] nfnl_lock net/netfilter/nfnetlink.c:61 [inline] #0: (&table[i].mutex){+.+.}, at: [] nfnetlink_rcv_batch net/netfilter/nfnetlink.c:303 [inline] #0: (&table[i].mutex){+.+.}, at: [] nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:495 [inline] #0: (&table[i].mutex){+.+.}, at: [] nfnetlink_rcv+0x554/0x1da0 net/netfilter/nfnetlink.c:513 2 locks held by syz-executor.2/9880: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x156/0x440 net/core/net_namespace.c:413 #1: (&table[i].mutex){+.+.}, at: [] nft_register_afinfo+0x63/0x190 net/netfilter/nf_tables_api.c:39 1 lock held by syz-executor.3/9896: #0: (rcu_preempt_state.exp_mutex){+.+.}, at: [] exp_funnel_lock kernel/rcu/tree_exp.h:305 [inline] #0: (rcu_preempt_state.exp_mutex){+.+.}, at: [] _synchronize_rcu_expedited+0x32d/0x770 kernel/rcu/tree_exp.h:596 1 lock held by syz-executor.2/10021: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x156/0x440 net/core/net_namespace.c:413 1 lock held by syz-executor.4/10032: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x156/0x440 net/core/net_namespace.c:413 1 lock held by syz-executor.3/10034: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x156/0x440 net/core/net_namespace.c:413 1 lock held by syz-executor.5/10045: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x156/0x440 net/core/net_namespace.c:413 1 lock held by syz-executor.0/10046: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x156/0x440 net/core/net_namespace.c:413 1 lock held by syz-executor.1/10072: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x156/0x440 net/core/net_namespace.c:413 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1534 Comm: khungtaskd Not tainted 4.14.290-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 nmi_cpu_backtrace.cold+0x57/0x93 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x13a/0x180 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:140 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:195 [inline] watchdog+0x5b9/0xb40 kernel/hung_task.c:274 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 3566 Comm: kworker/u4:5 Not tainted 4.14.290-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 task: ffff8880a8d9e2c0 task.stack: ffff8880a8ca0000 RIP: 0010:debug_object_deactivate lib/debugobjects.c:506 [inline] RIP: 0010:debug_object_deactivate+0x19e/0x2e0 lib/debugobjects.c:491 RSP: 0018:ffff8880a8ca7c98 EFLAGS: 00000046 RAX: 1ffff11016a55b99 RBX: 000000000000000a RCX: ffffffff88f481e0 RDX: ffff8880a8ca7d30 RSI: 0000000000000001 RDI: ffff8880b52adcc8 RBP: ffff8880b52adcb0 R08: ffffffff8b9d9bb8 R09: 0000000000000086 R10: ffff8880a8d9eb70 R11: ffff8880a8d9e2c0 R12: dffffc0000000000 R13: 1ffff11015194f96 R14: ffff88808fc31500 R15: ffffffff8c0ae148 FS: 0000000000000000(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000130 CR3: 00000000a190f000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: debug_work_deactivate kernel/workqueue.c:499 [inline] process_one_work+0x32a/0x14a0 kernel/workqueue.c:2054 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2251 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 Code: 00 48 c7 42 b0 00 00 00 00 48 c7 42 b8 00 00 00 00 c7 42 c0 05 00 00 00 4c 89 72 c8 48 89 4a d0 e8 b8 f4 ff ff 4c 8b 0c 24 eb 31 <48> 8d 7d 10 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 ---------------- Code disassembly (best guess): 0: 00 48 c7 add %cl,-0x39(%rax) 3: 42 b0 00 rex.X mov $0x0,%al 6: 00 00 add %al,(%rax) 8: 00 48 c7 add %cl,-0x39(%rax) b: 42 b8 00 00 00 00 rex.X mov $0x0,%eax 11: c7 42 c0 05 00 00 00 movl $0x5,-0x40(%rdx) 18: 4c 89 72 c8 mov %r14,-0x38(%rdx) 1c: 48 89 4a d0 mov %rcx,-0x30(%rdx) 20: e8 b8 f4 ff ff callq 0xfffff4dd 25: 4c 8b 0c 24 mov (%rsp),%r9 29: eb 31 jmp 0x5c * 2b: 48 8d 7d 10 lea 0x10(%rbp),%rdi <-- trapping instruction 2f: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 36: fc ff df 39: 48 89 fa mov %rdi,%rdx 3c: 48 c1 ea 03 shr $0x3,%rdx