Bluetooth: hci11 command 0x041b tx timeout Bluetooth: hci10 command 0x040f tx timeout Bluetooth: hci11 command 0x040f tx timeout Bluetooth: hci10 command 0x0419 tx timeout Bluetooth: hci11 command 0x0419 tx timeout BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 242s! INFO: task kworker/u4:3:1280 blocked for more than 140 seconds. Showing busy workqueues and worker pools: workqueue events: flags=0x0 pwq 0: Not tainted 4.14.305-syzkaller #0 cpus=0 node=0 flags=0x0 nice=0 active=25/256 refcnt=26 in-flight: 8014:rtc_timer_do_work pending: rht_deferred_worker, wait_rcu_exp_gp, defense_work_handler "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. , macvlan_process_broadcast kworker/u4:3 D , defense_work_handler 27056 1280 2 0x80000000 , defense_work_handler, vmstat_shepherd, defense_work_handler, defense_work_handler, cache_reap, macvlan_process_broadcast, macvlan_process_broadcast, macvlan_process_broadcast Workqueue: events_unbound fsnotify_mark_destroy_workfn , macvlan_process_broadcast , free_obj_work Call Trace: , hci_cmd_timeout context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3386 , hci_cmd_timeout , l2cap_info_timeout, l2cap_info_timeout, hci_cmd_timeout, hci_cmd_timeout, hci_cmd_timeout, hci_cmd_timeout, l2cap_info_timeout workqueue events_unbound: flags=0x2 pwq 4: cpus=0-1 flags=0x4 nice=0 active=4/512 refcnt=7 in-flight: 1280:fsnotify_mark_destroy_workfn fsnotify_mark_destroy_workfn, 9245:fsnotify_connector_destroy_workfn fsnotify_connector_destroy_workfn workqueue events_power_efficient: flags=0x80 pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=3/256 refcnt=4 schedule+0x8d/0x1b0 kernel/sched/core.c:3430 pending: process_srcu, fb_flashcursor, do_cache_clean schedule_timeout+0x80a/0xe90 kernel/time/timer.c:1724 workqueue mm_percpu_wq: flags=0x8 pwq 0: cpus=0 node=0 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 flags=0x0 nice=0 active=1/256 refcnt=2 pending: vmstat_update workqueue ipv6_addrconf: flags=0x40008 pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/1 refcnt=48 pending: addrconf_dad_work delayed: addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work , addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work pool 0: cpus=0 node=0 flags=0x0 nice=0 hung=243s workers=5 idle: 7999 3 9196 3491 pool 4: cpus=0-1 flags=0x4 nice=0 hung=0s workers=7 idle: 7835 8182 9442 8951 8095 __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 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:406 INFO: task kworker/u4:4:9245 blocked for more than 140 seconds. Not tainted 4.14.305-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/u4:4 D29136 9245 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:3386 schedule+0x8d/0x1b0 kernel/sched/core.c:3430 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:406 INFO: task syz-executor.4:9539 blocked for more than 140 seconds. Not tainted 4.14.305-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D28912 9539 8036 0x00000004 Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3386 schedule+0x8d/0x1b0 kernel/sched/core.c:3430 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3488 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893 exp_funnel_lock kernel/rcu/tree_exp.h:305 [inline] _synchronize_rcu_expedited+0x32d/0x770 kernel/rcu/tree_exp.h:596 synchronize_rcu+0x98/0x130 kernel/rcu/tree_plugin.h:762 synchronize_net+0x3a/0x40 net/core/dev.c:8250 packet_set_ring+0x369/0x1a10 net/packet/af_packet.c:4457 packet_release+0x4ca/0xa80 net/packet/af_packet.c:3105 __sock_release+0xcd/0x2b0 net/socket.c:602 sock_close+0x15/0x20 net/socket.c:1139 __fput+0x25f/0x7a0 fs/file_table.c:210 task_work_run+0x11f/0x190 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:191 [inline] exit_to_usermode_loop+0x1ad/0x200 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7f182ee54fab RSP: 002b:00007ffe74681fb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000006 RCX: 00007f182ee54fab RDX: 0000001b2f720000 RSI: 0000001b2f7238bc RDI: 0000000000000005 RBP: 00007f182efc4980 R08: 0000000000000000 R09: 000000003c3ce63b R10: 00052c68da700efa R11: 0000000000000293 R12: 00000000000505d4 R13: 00007ffe746820b0 R14: 00007f182efc3120 R15: 0000000000000032 INFO: task syz-executor.0:9567 blocked for more than 140 seconds. Not tainted 4.14.305-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D29112 9567 7993 0x80000004 Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3386 schedule+0x8d/0x1b0 kernel/sched/core.c:3430 _synchronize_rcu_expedited+0x522/0x770 kernel/rcu/tree_exp.h:615 synchronize_rcu+0x98/0x130 kernel/rcu/tree_plugin.h:762 synchronize_net+0x3a/0x40 net/core/dev.c:8250 nf_register_net_hook+0x6a5/0xa40 net/netfilter/core.c:295 nf_register_net_hooks+0x47/0xa0 net/netfilter/core.c:383 ebt_register_table+0x912/0xbb0 net/bridge/netfilter/ebtables.c:1227 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+0x5e/0xd3 RIP: 0033:0x7f64666fb0f9 RSP: 002b:00007f6464c6d168 EFLAGS: 00000246 ORIG_RAX: 0000000000000110 RAX: ffffffffffffffda RBX: 00007f646681af80 RCX: 00007f64666fb0f9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000006e060000 RBP: 00007f6466756ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe36ca393f R14: 00007f6464c6d300 R15: 0000000000022000 INFO: task syz-executor.5:9605 blocked for more than 140 seconds. Not tainted 4.14.305-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D29824 9605 8011 0x80000002 Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3386 schedule+0x8d/0x1b0 kernel/sched/core.c:3430 exp_funnel_lock kernel/rcu/tree_exp.h:295 [inline] _synchronize_rcu_expedited+0x5f6/0x770 kernel/rcu/tree_exp.h:596 synchronize_rcu+0x98/0x130 kernel/rcu/tree_plugin.h:762 kern_unmount fs/namespace.c:3372 [inline] kern_unmount+0x53/0xc0 fs/namespace.c:3367 put_ipc_ns.part.0+0x27/0x120 ipc/namespace.c:163 put_ipc_ns+0x2f/0x40 ipc/namespace.c:166 free_nsproxy+0xbd/0x1f0 kernel/nsproxy.c:180 switch_task_namespaces+0x8f/0xb0 kernel/nsproxy.c:229 do_exit+0xa3f/0x2850 kernel/exit.c:914 SYSC_exit kernel/exit.c:1006 [inline] SyS_exit+0x1e/0x20 kernel/exit.c:1004 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7f8bc3d880f9 RSP: 002b:00000000200008d8 EFLAGS: 00000246 ORIG_RAX: 000000000000003c RAX: ffffffffffffffda RBX: 00007f8bc3ea7f80 RCX: 00007f8bc3d880f9 RDX: 00007f8bc3d880f9 RSI: 0000000020000900 RDI: 000000000000000b RBP: 000000000000000b R08: 0000000020001080 R09: 9029721e2b4574d0 R10: 0000000020001080 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffced5b728f R14: 00007f8bc22fa300 R15: 0000000000022000 Showing all locks held in the system: 2 locks held by kworker/u4:3/1280: #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 1 lock held by khungtaskd/1533: #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4548 2 locks held by kworker/u4:4/9245: #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 3 locks held by syz-executor.4/9539: #0: (&sb->s_type->i_mutex_key#13){+.+.}, at: [] inode_lock include/linux/fs.h:719 [inline] #0: (&sb->s_type->i_mutex_key#13){+.+.}, at: [] __sock_release+0x86/0x2b0 net/socket.c:601 #1: (sk_lock-AF_PACKET){+.+.}, at: [] lock_sock include/net/sock.h:1473 [inline] #1: (sk_lock-AF_PACKET){+.+.}, at: [] packet_release+0x473/0xa80 net/packet/af_packet.c:3102 #2: (rcu_preempt_state.exp_mutex){+.+.}, at: [] exp_funnel_lock kernel/rcu/tree_exp.h:305 [inline] #2: (rcu_preempt_state.exp_mutex){+.+.}, at: [] _synchronize_rcu_expedited+0x32d/0x770 kernel/rcu/tree_exp.h:596 2 locks held by syz-executor.0/9567: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x156/0x440 net/core/net_namespace.c:413 #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.4/9667: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x156/0x440 net/core/net_namespace.c:413 1 lock held by syz-executor.0/9678: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x156/0x440 net/core/net_namespace.c:413 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1533 Comm: khungtaskd Not tainted 4.14.305-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 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:406 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 4621 Comm: systemd-journal Not tainted 4.14.305-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 task: ffff8880a168c080 task.stack: ffff8880a1690000 RIP: 0010:qlink_to_object mm/kasan/quarantine.c:136 [inline] RIP: 0010:qlink_free mm/kasan/quarantine.c:141 [inline] RIP: 0010:qlist_free_all+0x32/0x140 mm/kasan/quarantine.c:166 RSP: 0018:ffff8880a1697b18 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff888090dad2c0 RCX: ffffea0002d3a1df RDX: 0000000000000000 RSI: ffff8880a168c908 RDI: ffff888090dad2c0 RBP: 0000000000000000 R08: 00000000000001e0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a3265800 R13: ffff8880a1697b50 R14: ffff8880b5532d80 R15: 0000000000000286 FS: 00007f25499e68c0(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2546e0c000 CR3: 00000000a16ea000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: quarantine_reduce+0x185/0x200 mm/kasan/quarantine.c:259 kasan_kmalloc+0xa2/0x160 mm/kasan/kasan.c:536 slab_post_alloc_hook mm/slab.h:442 [inline] slab_alloc mm/slab.c:3390 [inline] kmem_cache_alloc+0x111/0x3c0 mm/slab.c:3550 getname_flags+0xc8/0x550 fs/namei.c:138 do_sys_open+0x1ce/0x410 fs/open.c:1075 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7f2548f75840 RSP: 002b:00007fff9bed4598 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007fff9bed48a0 RCX: 00007f2548f75840 RDX: 00000000000001a0 RSI: 0000000000080042 RDI: 00005631cdb7d450 RBP: 000000000000000d R08: 000000000000c0ff R09: 00000000ffffffff R10: 0000000000000069 R11: 0000000000000246 R12: 00000000ffffffff R13: 00005631cdb78040 R14: 00007fff9bed4860 R15: 00005631cdb7d270 Code: 54 55 53 48 8b 1f 48 85 db 0f 84 08 01 00 00 48 89 f5 49 89 fd 48 85 ed 49 89 ee 0f 84 8b 00 00 00 49 63 86 fc 00 00 00 4c 8b 23 <48> 29 c3 48 83 3d 93 80 71 07 00 0f 84 e6 00 00 00 9c 58 0f 1f ---------------- Code disassembly (best guess): 0: 54 push %rsp 1: 55 push %rbp 2: 53 push %rbx 3: 48 8b 1f mov (%rdi),%rbx 6: 48 85 db test %rbx,%rbx 9: 0f 84 08 01 00 00 je 0x117 f: 48 89 f5 mov %rsi,%rbp 12: 49 89 fd mov %rdi,%r13 15: 48 85 ed test %rbp,%rbp 18: 49 89 ee mov %rbp,%r14 1b: 0f 84 8b 00 00 00 je 0xac 21: 49 63 86 fc 00 00 00 movslq 0xfc(%r14),%rax 28: 4c 8b 23 mov (%rbx),%r12 * 2b: 48 29 c3 sub %rax,%rbx <-- trapping instruction 2e: 48 83 3d 93 80 71 07 cmpq $0x0,0x7718093(%rip) # 0x77180c9 35: 00 36: 0f 84 e6 00 00 00 je 0x122 3c: 9c pushfq 3d: 58 pop %rax 3e: 0f .byte 0xf 3f: 1f (bad)