INFO: task kworker/1:0:24 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:0     state:D stack:24512 pid:24    tgid:24    ppid:2      task_flags:0x4208060 flags:0x00080000
Workqueue: events request_firmware_work_func
Call Trace:
 <TASK>
 __schedule+0x14bc/0x5000
 schedule+0x165/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7e6/0x1350
 regdb_fw_cb+0x7d/0x1c0
 request_firmware_work_func+0x105/0x1c0
 process_scheduled_works+0xad1/0x1770
 worker_thread+0x8a0/0xda0
 kthread+0x711/0x8a0
 ret_from_fork+0x599/0xb30
 ret_from_fork_asm+0x1a/0x30
 </TASK>
INFO: task kworker/u10:17:5056 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u10:17  state:D stack:24344 pid:5056  tgid:5056  ppid:2      task_flags:0x4208060 flags:0x00080000
Workqueue: events_unbound linkwatch_event
Call Trace:
 <TASK>
 __schedule+0x14bc/0x5000
 schedule+0x165/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7e6/0x1350
 linkwatch_event+0xe/0x60
 process_scheduled_works+0xad1/0x1770
 worker_thread+0x8a0/0xda0
 kthread+0x711/0x8a0
 ret_from_fork+0x599/0xb30
 ret_from_fork_asm+0x1a/0x30
 </TASK>
INFO: task syz.2.190:6632 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.190       state:D stack:28568 pid:6632  tgid:6629  ppid:5838   task_flags:0x400040 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x14bc/0x5000
 schedule+0x165/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7e6/0x1350
 do_ip_setsockopt+0xeee/0x2d00
 ip_setsockopt+0x66/0x110
 do_sock_setsockopt+0x17c/0x1b0
 __x64_sys_setsockopt+0x13f/0x1b0
 do_syscall_64+0xfa/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe87b98f7c9
RSP: 002b:00007fe87c7ab038 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007fe87bbe6180 RCX: 00007fe87b98f7c9
RDX: 000000000000002f RSI: 0000000000000000 RDI: 0000000000000008
RBP: 00007fe87b9f297f R08: 000000000000000c R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe87bbe6218 R14: 00007fe87bbe6180 R15: 00007ffd1210d928
 </TASK>
INFO: task syz.2.190:6633 blocked for more than 144 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.190       state:D stack:28568 pid:6633  tgid:6629  ppid:5838   task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x14bc/0x5000
 schedule+0x165/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7e6/0x1350
 br_ioctl_stub+0x199/0xc80
 sock_ioctl+0x4d8/0x790
 __se_sys_ioctl+0xfc/0x170
 do_syscall_64+0xfa/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe87b98f7c9
RSP: 002b:00007fe87c78a038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fe87bbe6270 RCX: 00007fe87b98f7c9
RDX: 0000200000000080 RSI: 00000000000089a0 RDI: 000000000000000c
RBP: 00007fe87b9f297f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe87bbe6308 R14: 00007fe87bbe6270 R15: 00007ffd1210d928
 </TASK>
INFO: task syz.2.190:6634 blocked for more than 144 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.190       state:D stack:28440 pid:6634  tgid:6629  ppid:5838   task_flags:0x400040 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x14bc/0x5000
 schedule+0x165/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7e6/0x1350
 sock_ioctl+0x4b4/0x790
 __se_sys_ioctl+0xfc/0x170
 do_syscall_64+0xfa/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe87b98f7c9
RSP: 002b:00007fe87c769038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fe87bbe6360 RCX: 00007fe87b98f7c9
RDX: 0000200000000080 RSI: 00000000000089a2 RDI: 000000000000000e
RBP: 00007fe87b9f297f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe87bbe63f8 R14: 00007fe87bbe6360 R15: 00007ffd1210d928
 </TASK>

Showing all locks held in the system:
4 locks held by kworker/u8:1/13:
 #0: ffff888100ef7948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x1770
 #1: ffffc90000127b80 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x1770
 #2: ffffffff8f304c70 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xf7/0x7a0
 #3: ffffffff8f311d08 (rtnl_mutex){+.+.}-{4:4}, at: wg_netns_pre_exit+0x1c/0x200
3 locks held by kworker/1:0/24:
 #0: ffff888100075948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x1770
 #1: ffffc900001e7b80 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x1770
 #2: ffffffff8f311d08 (rtnl_mutex){+.+.}-{4:4}, at: regdb_fw_cb+0x7d/0x1c0
1 lock held by khungtaskd/36:
 #0: ffffffff8df41a20 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
3 locks held by kworker/u10:17/5056:
 #0: ffff888100089948 ((wq_completion)events_unbound#2){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x1770
 #1: ffffc9000a7cfb80 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x1770
 #2: ffffffff8f311d08 (rtnl_mutex){+.+.}-{4:4}, at: linkwatch_event+0xe/0x60
2 locks held by getty/5662:
 #0: ffff88811484e0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc9000357b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x449/0x1460
7 locks held by kworker/u11:2/5833:
 #0: ffff888114a90948 ((wq_completion)hci5){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x1770
 #1: ffffc90004b47b80 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x1770
 #2: ffff8881b520cec0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_cmd_sync_work+0x1d3/0x400
 #3: ffff8881b520c0c0 (&hdev->lock){+.+.}-{4:4}, at: hci_abort_conn_sync+0x242/0xe30
 #4: ffffffff8f483788 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_conn_failed+0x165/0x340
 #5: ffff888114a92b38 (&conn->lock#2){+.+.}-{4:4}, at: l2cap_conn_del+0x7b/0x5b0
 #6: ffffffff8df47578 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x3b9/0x730
3 locks held by kworker/u8:4/5864:
 #0: ffff888172cb6948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x1770
 #1: ffffc90004da7b80 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x1770
 #2: ffffffff8f311d08 (rtnl_mutex){+.+.}-{4:4}, at: addrconf_verify_work+0x19/0x30
2 locks held by syz.1.187/6608:
 #0: ffffffff8f311d08 (rtnl_mutex){+.+.}-{4:4}, at: tun_chr_close+0x3e/0x1c0
 #1: ffffffff8df47578 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x3b9/0x730
5 locks held by syz.1.187/6615:
1 lock held by syz.2.190/6632:
 #0: ffffffff8f311d08 (rtnl_mutex){+.+.}-{4:4}, at: do_ip_setsockopt+0xeee/0x2d00
2 locks held by syz.2.190/6633:
 #0: ffffffff8f2f5ce8 (br_ioctl_mutex){+.+.}-{4:4}, at: sock_ioctl+0x4b4/0x790
 #1: ffffffff8f311d08 (rtnl_mutex){+.+.}-{4:4}, at: br_ioctl_stub+0x199/0xc80
1 lock held by syz.2.190/6634:
 #0: ffffffff8f2f5ce8 (br_ioctl_mutex){+.+.}-{4:4}, at: sock_ioctl+0x4b4/0x790
1 lock held by syz-executor/6642:
 #0: ffffffff8f311d08 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x3b0/0x18b0
1 lock held by syz.0.193/6648:
 #0: ffffffff8f311d08 (rtnl_mutex){+.+.}-{4:4}, at: rtnetlink_rcv_msg+0x71c/0xb70
1 lock held by syz.0.193/6649:
 #0: ffffffff8f311d08 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_setlink+0x499/0x890
1 lock held by syz-executor/6656:
 #0: ffffffff8f311d08 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x3b0/0x18b0
1 lock held by syz-executor/6660:
 #0: ffffffff8f311d08 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x3b0/0x18b0
1 lock held by syz-executor/6665:
 #0: ffffffff8f311d08 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x3b0/0x18b0
1 lock held by syz-executor/6671:
 #0: ffffffff8f311d08 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x3b0/0x18b0
1 lock held by syz-executor/6677:
 #0: ffffffff8f311d08 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x3b0/0x18b0
1 lock held by syz-executor/6684:
 #0: ffffffff8f311d08 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x3b0/0x18b0
1 lock held by syz-executor/6690:
 #0: ffffffff8f311d08 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x3b0/0x18b0
1 lock held by syz-executor/6699:
 #0: ffffffff8f311d08 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x3b0/0x18b0

=============================================

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 36 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250
 nmi_cpu_backtrace+0x39e/0x3d0
 nmi_trigger_cpumask_backtrace+0x17a/0x300
 sys_info+0x135/0x170
 watchdog+0xf95/0xfe0
 kthread+0x711/0x8a0
 ret_from_fork+0x599/0xb30
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 6615 Comm: syz.1.187 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:rcu_is_watching+0x31/0xb0
Code: 56 53 65 ff 05 c0 14 d7 10 e8 ab 42 b4 09 89 c3 83 f8 08 73 65 49 bf 00 00 00 00 00 fc ff df 4c 8d 34 dd d0 2d 9b 8d 4c 89 f0 <48> c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 ec 7d 80 00 48 c7 c3
RSP: 0018:ffffc90000006d90 EFLAGS: 00000093
RAX: ffffffff8d9b2dd0 RBX: 0000000000000000 RCX: 13cc9cbfc8d35d00
RDX: 000000008eba6367 RSI: ffffffff8bc082c0 RDI: ffffffff8bc08280
RBP: dffffc0000000000 R08: ffffffff81743f85 R09: ffffffff8df41a20
R10: ffffc90000006f30 R11: fffff52000000de8 R12: 1ffff92000000ddc
R13: ffffc90000006f18 R14: ffffffff8d9b2dd0 R15: dffffc0000000000
FS:  00007fe97c9d56c0(0000) GS:ffff88818e835000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005574a248d680 CR3: 0000000112054000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 unwind_next_frame+0xd4/0x23d0
 perf_callchain_kernel+0x3ac/0x600
 get_perf_callchain+0x23c/0x820
 perf_callchain+0x2a7/0x350
 perf_prepare_sample+0x31f/0x2250
 perf_event_output_forward+0x151/0x430
 __perf_event_overflow+0x845/0xe70
 perf_swevent_hrtimer+0x3fc/0x570
 __hrtimer_run_queues+0x4d0/0xc30
 hrtimer_interrupt+0x45b/0xaa0
 __sysvec_apic_timer_interrupt+0x102/0x3e0
 sysvec_apic_timer_interrupt+0x52/0xc0
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:ieee80211_beacon_get_tim+0x1b1/0x2b0
Code: 01 00 00 00 4c 89 fe 4c 21 f6 31 ff e8 98 04 e7 f6 4d 21 f7 75 5c 4d 8d bc 24 cc 06 00 00 4c 89 f8 48 c1 e8 03 42 0f b6 04 28 <84> c0 0f 85 ce 00 00 00 45 8b 37 31 ff 44 89 f6 e8 ca 03 e7 f6 45
RSP: 0018:ffffc90000007aa0 EFLAGS: 00000a07
RAX: 0000000000000000 RBX: ffff888119d20300 RCX: ffff8881033dd7c0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000007b58 R08: ffff88801ff10ee7 R09: 1ffff11003fe21dc
R10: dffffc0000000000 R11: ffffed1003fe21dd R12: ffff88801ff10e80
R13: dffffc0000000000 R14: 010040004c0b1b94 R15: ffff88801ff1154c
 mac80211_hwsim_beacon_tx+0x3c5/0x870
 __iterate_interfaces+0x2ab/0x590
 ieee80211_iterate_active_interfaces_atomic+0xdb/0x180
 mac80211_hwsim_beacon+0xbb/0x180
 __hrtimer_run_queues+0x51c/0xc30
 hrtimer_run_softirq+0x187/0x2b0
 handle_softirqs+0x27d/0x850
 __irq_exit_rcu+0xca/0x1f0
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:__schedule+0x19d4/0x5000
Code: ff ff 48 89 df 48 83 c7 18 8b b4 24 a8 01 00 00 e8 f1 f7 41 f6 48 89 df e8 b9 94 35 f6 48 89 df e8 01 75 36 f6 48 8b 5c 24 10 <e9> eb fa ff ff 90 0f 0b 90 e9 ba f2 ff ff ba 09 00 01 00 e9 72 ec
RSP: 0018:ffffc90002ab74c0 EFLAGS: 00000286
RAX: 13cc9cbfc8d35d00 RBX: ffff8881033dd7c0 RCX: 13cc9cbfc8d35d00
RDX: 0000000000000007 RSI: ffffffff8d792409 RDI: ffffffff8bc082e0
RBP: ffffc90002ab76d0 R08: ffffffff8f821f77 R09: 1ffffffff1f043ee
R10: dffffc0000000000 R11: fffffbfff1f043ef R12: dffffc0000000000
R13: ffff8881033dd7c0 R14: ffff88812103b470 R15: 1ffff11024207680
 preempt_schedule_irq+0xb5/0x150
 irqentry_exit+0x5d8/0x660
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:put_cpu_partial+0x234/0x2d0
Code: 41 5c 41 5d 41 5e 41 5f 5d e9 d8 14 41 09 cc 90 0f 0b 90 e9 e7 fe ff ff e8 39 2b 3e 09 41 f7 c5 00 02 00 00 74 b2 fb 4d 85 ff <75> b1 eb ba e8 23 2b 3e 09 e9 4f fe ff ff 90 0f 0b 90 e9 66 ff ff
RSP: 0018:ffffc90002ab7898 EFLAGS: 00000286
RAX: 13cc9cbfc8d35d00 RBX: ffff888100042140 RCX: 13cc9cbfc8d35d00
RDX: 0000000000000007 RSI: ffffffff8d792409 RDI: ffffffff8bc082e0
RBP: 0000000000000001 R08: ffffffff8f821f77 R09: 1ffffffff1f043ee
R10: dffffc0000000000 R11: fffffbfff1f043ef R12: 0000000000000000
R13: 0000000000000282 R14: ffff88812103f190 R15: ffffea0006ce0600
 __slab_free+0x288/0x2a0
 qlist_free_all+0x97/0x100
 kasan_quarantine_reduce+0x148/0x160
 __kasan_slab_alloc+0x22/0x80
 __kmalloc_node_track_caller_noprof+0x526/0x820
 kstrdup+0x42/0x100
 __kernfs_new_node+0x9c/0x880
 kernfs_new_node+0x102/0x210
 kernfs_create_dir_ns+0x44/0x130
 cgroup_mkdir+0x39f/0xf60
 kernfs_iop_mkdir+0x211/0x350
 vfs_mkdir+0x512/0x5b0
 do_mkdirat+0x276/0x4b0
 __x64_sys_mkdir+0x6c/0x80
 do_syscall_64+0xfa/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe97e78f7c9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe97c9d5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007fe97e9e6180 RCX: 00007fe97e78f7c9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000000
RBP: 00007fe97e7f297f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe97e9e6218 R14: 00007fe97e9e6180 R15: 00007fff5aab4f48
 </TASK>
