INFO: task syz.0.406:7335 blocked for more than 146 seconds.
      Not tainted 6.16.0-rc6-syzkaller-00411-g95993dc3039e-dirty #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.406       state:D stack:24264 pid:7335  tgid:7335  ppid:5833   task_flags:0x400040 flags:0x00004006
Call Trace:
 <TASK>
 __schedule+0x16f5/0x4d00
 schedule+0x165/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x724/0xe80
 tun_chr_close+0x3e/0x1c0
 __fput+0x44c/0xa70
 task_work_run+0x1d4/0x260
 exit_to_user_mode_loop+0xec/0x110
 do_syscall_64+0x2bd/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f899918e9a9
RSP: 002b:00007ffed6cd58f8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f89993b7ba0 RCX: 00007f899918e9a9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f89993b7ba0 R08: 000000000000016c R09: 00000014d6cd5bef
R10: 00007f89993b7ac0 R11: 0000000000000246 R12: 0000000000018acb
R13: 00007f89993b6080 R14: ffffffffffffffff R15: 00007ffed6cd5a10
 </TASK>
INFO: task syz.2.408:7346 blocked for more than 146 seconds.
      Not tainted 6.16.0-rc6-syzkaller-00411-g95993dc3039e-dirty #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.408       state:D stack:25768 pid:7346  tgid:7344  ppid:5832   task_flags:0x400140 flags:0x00004004
Call Trace:
 <TASK>
 __schedule+0x16f5/0x4d00
 schedule+0x165/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x724/0xe80
 wext_ioctl_dispatch+0xa2/0x410
 wext_handle_ioctl+0x100/0x1c0
 sock_ioctl+0x15f/0x790
 __se_sys_ioctl+0xfc/0x170
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f52e5d8e9a9
RSP: 002b:00007f52e6bac038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f52e5fb6080 RCX: 00007f52e5d8e9a9
RDX: 0000200000000000 RSI: 0000000000008b20 RDI: 0000000000000008
RBP: 00007f52e5e10d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f52e5fb6080 R15: 00007ffcd0c97a48
 </TASK>
INFO: task syz.2.408:7347 blocked for more than 147 seconds.
      Not tainted 6.16.0-rc6-syzkaller-00411-g95993dc3039e-dirty #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.408       state:D stack:26760 pid:7347  tgid:7344  ppid:5832   task_flags:0x400140 flags:0x00004004
Call Trace:
 <TASK>
 __schedule+0x16f5/0x4d00
 schedule+0x165/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x724/0xe80
 rtnl_dumpit+0x92/0x200
 netlink_dump+0x6de/0xe60
 __netlink_dump_start+0x5cb/0x7e0
 rtnetlink_rcv_msg+0x9eb/0xb70
 netlink_rcv_skb+0x208/0x470
 netlink_unicast+0x75c/0x8e0
 netlink_sendmsg+0x805/0xb30
 __sock_sendmsg+0x21c/0x270
 ____sys_sendmsg+0x505/0x830
 ___sys_sendmsg+0x21f/0x2a0
 __x64_sys_sendmsg+0x19b/0x260
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f52e5d8e9a9
RSP: 002b:00007f52e6b8b038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f52e5fb6160 RCX: 00007f52e5d8e9a9
RDX: 0000000000000000 RSI: 0000200000000080 RDI: 000000000000000c
RBP: 00007f52e5e10d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f52e5fb6160 R15: 00007ffcd0c97a48
 </TASK>

Showing all locks held in the system:
3 locks held by kworker/0:1/10:
 #0: ffff88801a481d48 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc900000d7bc0 ((crda_timeout).work){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffffffff8f51cdc8 (rtnl_mutex){+.+.}-{4:4}, at: crda_timeout_work+0x15/0x50
1 lock held by khungtaskd/34:
 #0: ffffffff8e13f0e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
3 locks held by kworker/u11:0/54:
 #0: ffff88810e712948 ((wq_completion)hci3){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc900007cfbc0 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffff88803dcecdc0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_cmd_sync_work+0x1d4/0x3a0
3 locks held by kworker/u11:1/5220:
 #0: ffff88803d3ce148 ((wq_completion)hci4){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc90008307bc0 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffff888110bccdc0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_cmd_sync_work+0x1d4/0x3a0
1 lock held by dhcpcd/5576:
 #0: ffffffff8f51cdc8 (rtnl_mutex){+.+.}-{4:4}, at: inet6_rtm_newaddr+0x5b7/0xd20
2 locks held by getty/5657:
 #0: ffff8881091610a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900029032f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400
3 locks held by kworker/u11:2/5829:
 #0: ffff8881172c3948 ((wq_completion)hci5){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc9000385fbc0 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffff8881073a8dc0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_cmd_sync_work+0x1d4/0x3a0
4 locks held by kworker/u11:4/5838:
 #0: ffff888116f47148 ((wq_completion)hci8#2){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc9000394fbc0 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffff88810d9280b8 (&hdev->lock){+.+.}-{4:4}, at: hci_conn_complete_evt+0xc3/0x1040
 #3: ffff88801b2f7988 (&root->kernfs_rwsem){++++}-{4:4}, at: kernfs_add_one+0x41/0x520
3 locks held by kworker/u8:2/5847:
 #0: ffff88802956a948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc900038bfbc0 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffffffff8f51cdc8 (rtnl_mutex){+.+.}-{4:4}, at: addrconf_verify_work+0x19/0x30
3 locks held by kworker/0:4/5879:
 #0: ffff88801a481d48 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc90003cdfbc0 ((reg_check_chans).work){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffffffff8f51cdc8 (rtnl_mutex){+.+.}-{4:4}, at: reg_check_chans_work+0x95/0xf00
1 lock held by syz.0.406/7335:
 #0: ffffffff8f51cdc8 (rtnl_mutex){+.+.}-{4:4}, at: tun_chr_close+0x3e/0x1c0
3 locks held by syz.0.406/7337:
1 lock held by syz.1.407/7340:
 #0: ffffffff8f51cdc8 (rtnl_mutex){+.+.}-{4:4}, at: tun_chr_close+0x3e/0x1c0
1 lock held by syz.2.408/7346:
 #0: ffffffff8f51cdc8 (rtnl_mutex){+.+.}-{4:4}, at: wext_ioctl_dispatch+0xa2/0x410
2 locks held by syz.2.408/7347:
 #0: ffff888022fb66d0 (nlk_cb_mutex-ROUTE){+.+.}-{4:4}, at: __netlink_dump_start+0xfe/0x7e0
 #1: ffffffff8f51cdc8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dumpit+0x92/0x200
1 lock held by syz-executor/7351:
 #0: ffffffff8f51cdc8 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x3b0/0x18b0
1 lock held by syz-executor/7356:
 #0: ffffffff8f51cdc8 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x3b0/0x18b0
1 lock held by syz-executor/7359:
 #0: ffffffff8f51cdc8 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x3b0/0x18b0
1 lock held by syz-executor/7366:
 #0: ffffffff8f51cdc8 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x3b0/0x18b0
1 lock held by syz-executor/7369:
 #0: ffffffff8f51cdc8 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x3b0/0x18b0
4 locks held by kworker/u11:6/7373:
 #0: ffff88801fef3948 ((wq_completion)hci9#2){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc90006b4fbc0 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffff88802ae300b8 (&hdev->lock){+.+.}-{4:4}, at: hci_conn_complete_evt+0xc3/0x1040
 #3: ffff88801b2f7988 (&root->kernfs_rwsem){++++}-{4:4}, at: kernfs_add_one+0x41/0x520
1 lock held by syz-executor/7375:
 #0: ffffffff8f51cdc8 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x3b0/0x18b0
2 locks held by dhcpcd/7384:
 #0: ffff888111d7c408 (&sb->s_type->i_mutex_key#11){+.+.}-{4:4}, at: sock_close+0x9b/0x240
 #1: ffffffff8e144bf8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x2f6/0x730
1 lock held by syz-executor/7387:
 #0: ffff88801b2f7988 (&root->kernfs_rwsem){++++}-{4:4}, at: kernfs_dop_revalidate+0x9e/0x5d0
1 lock held by syz-executor/7388:
 #0: ffffffff8f51cdc8 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x3b0/0x18b0
1 lock held by udevd/7390:
 #0: ffff88801b2f7988 (&root->kernfs_rwsem){++++}-{4:4}, at: kernfs_dop_revalidate+0x9e/0x5d0
1 lock held by syz-executor/7391:
 #0: ffffffff8f51cdc8 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x3b0/0x18b0

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 34 Comm: khungtaskd Not tainted 6.16.0-rc6-syzkaller-00411-g95993dc3039e-dirty #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
 watchdog+0xfee/0x1030
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 7337 Comm: syz.0.406 Not tainted 6.16.0-rc6-syzkaller-00411-g95993dc3039e-dirty #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:check_preemption_disabled+0x6/0x120
Code: c7 c6 20 9f e2 8b eb 1c 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 41 57 41 56 53 <48> 83 ec 10 65 48 8b 05 ee 5d 31 07 48 89 44 24 08 65 8b 05 f6 5d
RSP: 0018:ffffc900001df958 EFLAGS: 00000007
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000000002
RDX: 0000000000000000 RSI: ffffffff8be29f20 RDI: ffffffff8be29ee0
RBP: ffffffff81cb5957 R08: 0000000000000000 R09: 0000000000000000
R10: 3e2d735f5f5f5f26 R11: 746e756f63716573 R12: 0000000000000002
R13: ffffffff8e13f0e0 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f8999fa96c0(0000) GS:ffff8881a3c1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc3eb03c98 CR3: 000000002afc6000 CR4: 00000000000006f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 rcu_is_watching+0x15/0xb0
 lock_acquire+0x5f/0x360
 trace_call_bpf+0xd4/0x850
 perf_trace_run_bpf_submit+0x78/0x170
 perf_trace_lock+0x2f8/0x3b0
 lock_release+0x3b2/0x3e0
 seqcount_lockdep_reader_access+0xdc/0x1c0
 ktime_get+0x3e/0x1f0
 perf_swevent_hrtimer+0x442/0x550
 __hrtimer_run_queues+0x4e0/0xc60
 hrtimer_interrupt+0x45b/0xaa0
 __sysvec_apic_timer_interrupt+0x10b/0x410
 sysvec_apic_timer_interrupt+0x52/0xc0
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:unwind_next_frame+0xa60/0x2390
Code: 48 8d 5a 01 48 89 d0 48 c1 e8 03 0f b6 04 28 84 c0 0f 85 82 17 00 00 48 89 d8 48 c1 e8 03 0f b6 04 28 84 c0 0f 85 99 17 00 00 <48> 0f bf 02 49 01 c4 48 8d 5e 01 48 8b 44 24 40 0f b6 04 28 84 c0
RSP: 0018:ffffc900001e03b8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffffff903177cf RCX: ffffffff8fb5aeb8
RDX: ffffffff903177ce RSI: ffffffff903177d2 RDI: ffffffff8be29ee0
RBP: dffffc0000000000 R08: 0000000000000009 R09: ffffffff8172aae5
R10: ffffc900001e04e8 R11: fffff5200003c0a9 R12: ffffc900001e0488
R13: ffffc900001e0538 R14: ffffc900001e04e8 R15: ffffc900001e0520
 __unwind_start+0x5b9/0x760
 arch_stack_walk+0xe4/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 __kasan_slab_alloc+0x6c/0x80
 kmem_cache_alloc_node_noprof+0x1bb/0x3c0
 __alloc_skb+0x112/0x2d0
 __netdev_alloc_skb+0x108/0x970
 __ieee80211_beacon_get+0xeeb/0x17b0
 ieee80211_beacon_get_tim+0xb4/0x2b0
 mac80211_hwsim_beacon_tx+0x3ce/0x860
 __iterate_interfaces+0x2ab/0x590
 ieee80211_iterate_active_interfaces_atomic+0xdb/0x180
 mac80211_hwsim_beacon+0xbb/0x1c0
 __hrtimer_run_queues+0x52c/0xc60
 hrtimer_run_softirq+0x187/0x2b0
 handle_softirqs+0x286/0x870
 __irq_exit_rcu+0xca/0x1f0
 irq_exit_rcu+0x9/0x30
 sysvec_irq_work+0xa3/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_irq_work+0x1a/0x20
RIP: 0010:finish_task_switch+0x26b/0x950
Code: 0f 84 3c 01 00 00 48 85 db 0f 85 63 01 00 00 0f 1f 44 00 00 4c 8b 75 d0 4c 89 e7 e8 0f 2a df 09 e8 ba b9 35 00 fb 4c 8b 65 c0 <49> 8d bc 24 18 16 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0
RSP: 0018:ffffc90004e26898 EFLAGS: 00000282
RAX: 85d84de2c4459300 RBX: 0000000000000000 RCX: 85d84de2c4459300
RDX: 0000000000000006 RSI: ffffffff8d998940 RDI: ffffffff8be29f40
RBP: ffffc90004e268f0 R08: ffffffff8fa1e9f7 R09: 1ffffffff1f43d3e
R10: dffffc0000000000 R11: fffffbfff1f43d3f R12: ffff888022908000
R13: dffffc0000000000 R14: ffff888108109cc0 R15: ffff88813663ab98
 __schedule+0x16fd/0x4d00
 preempt_schedule_irq+0xb5/0x150
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:kasan_check_range+0x1da/0x2c0
Code: 07 4d 85 e4 49 0f 49 dc 48 83 e3 f8 49 29 dc 74 12 41 80 3b 00 0f 85 b8 00 00 00 49 ff c3 49 ff cc 75 ee 5b 41 5c 41 5d 41 5e <41> 5f 5d c3 cc cc cc cc cc 45 84 ff 75 63 41 f7 c7 00 ff 00 00 75
RSP: 0018:ffffc90004e26c98 EFLAGS: 00000256
RAX: ffffffff825d0801 RBX: ffff88803b862780 RCX: ffffffff825d08a0
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff88803b862780
RBP: 0000000000000002 R08: ffff88803b862783 R09: 1ffff1100770c4f0
R10: dffffc0000000000 R11: ffffed100770c4f1 R12: 1ffffffff1f44366
R13: dffffc0000000000 R14: ffff88803b862780 R15: 1ffff1100770c4f0
 kernfs_put+0x30/0x480
 __kernfs_remove+0x3f6/0x570
 kernfs_remove_by_name_ns+0xaf/0x130
 sysfs_remove_group+0xfc/0x2c0
 sysfs_remove_groups+0x54/0xb0
 device_remove_attrs+0x1aa/0x260
 device_del+0x509/0x8e0
 unregister_netdevice_many_notify+0x1d52/0x2320
 rtnl_dellink+0x488/0x710
 rtnetlink_rcv_msg+0x7cf/0xb70
 netlink_rcv_skb+0x208/0x470
 netlink_unicast+0x75c/0x8e0
 netlink_sendmsg+0x805/0xb30
 __sock_sendmsg+0x21c/0x270
 ____sys_sendmsg+0x505/0x830
 ___sys_sendmsg+0x21f/0x2a0
 __x64_sys_sendmsg+0x19b/0x260
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f899918e9a9
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:00007f8999fa9038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f89993b5fa0 RCX: 00007f899918e9a9
RDX: 0000000000040000 RSI: 0000200000000140 RDI: 0000000000000006
RBP: 00007f8999210d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f89993b5fa0 R15: 00007ffed6cd5798
 </TASK>
