INFO: task syz-executor:7255 blocked for more than 145 seconds.
      Not tainted 6.16.0-rc5-syzkaller-00159-g47c84997c686 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:22760 pid:7255  tgid:7255  ppid:1      task_flags:0x400140 flags:0x00004004
Call Trace:
 <TASK>
 __schedule+0x16f5/0x4d00
 schedule+0x165/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x724/0xe80
 rtnl_newlink+0x8db/0x1c70
 rtnetlink_rcv_msg+0x7cf/0xb70
 netlink_rcv_skb+0x208/0x470
 netlink_unicast+0x75c/0x8e0
 netlink_sendmsg+0x805/0xb30
 __sock_sendmsg+0x21c/0x270
 __sys_sendto+0x3bd/0x520
 __x64_sys_sendto+0xde/0x100
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f068b1907bc
RSP: 002b:00007ffd8aa196d0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f068bee4620 RCX: 00007f068b1907bc
RDX: 000000000000003c RSI: 00007f068bee4670 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007ffd8aa19724 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 0000000000000000 R14: 00007f068bee4670 R15: 0000000000000000
 </TASK>

Showing all locks held in the system:
1 lock held by pool_workqueue_/3:
 #0: ffffffff8e144c78 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x2f6/0x730
4 locks held by kworker/u8:0/12:
8 locks held by kworker/u8:1/13:
 #0: ffff88801b2f6948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc90000107bc0 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffffffff8f510c10 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xf7/0x800
 #3: ffff888038e2a0e8 (&dev->mutex){....}-{4:4}, at: devlink_pernet_pre_exit+0x10a/0x3d0
 #4: ffff888038e28250 (&devlink->lock_key#7){+.+.}-{4:4}, at: devlink_pernet_pre_exit+0x11c/0x3d0
 #5: ffffffff8f51d808 (rtnl_mutex){+.+.}-{4:4}, at: nsim_destroy+0xdb/0x670
 #6: ffff88810ca00d30 (&dev_instance_lock_key#20){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x5a1/0x2320
 #7: ffffffff8e144c78 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x3b9/0x730
1 lock held by khungtaskd/34:
 #0: ffffffff8e13f160 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
1 lock held by kcompactd1/39:
3 locks held by kworker/1:1/52:
 #0: ffff88801a481d48 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc900007afbc0 ((reg_check_chans).work){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffffffff8f51d808 (rtnl_mutex){+.+.}-{4:4}, at: reg_check_chans_work+0x95/0xf00
3 locks held by kworker/u10:4/4223:
 #0: ffff888136639f98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140
 #1: ffff888136623f08 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x39a/0x6d0
 #2: ffff888038ef0768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: cfg80211_wiphy_work+0xc4/0x460
3 locks held by kworker/u10:5/4638:
 #0: ffff88801a489148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc900064bfbc0 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffffffff8f51d808 (rtnl_mutex){+.+.}-{4:4}, at: linkwatch_event+0xe/0x60
1 lock held by syslogd/5262:
1 lock held by klogd/5269:
2 locks held by udevd/5280:
5 locks held by dhcpcd/5577:
2 locks held by getty/5659:
 #0: ffff888022e920a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900029062f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400
1 lock held by syz-executor/5835:
 #0: ffffffff8f51d808 (rtnl_mutex){+.+.}-{4:4}, at: tun_chr_close+0x3e/0x1c0
3 locks held by kworker/u8:4/5859:
 #0: ffff888107e56948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc900035cfbc0 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffffffff8f51d808 (rtnl_mutex){+.+.}-{4:4}, at: addrconf_verify_work+0x19/0x30
3 locks held by kworker/1:5/5879:
 #0: ffff88801a481d48 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc9000371fbc0 ((crda_timeout).work){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffffffff8f51d808 (rtnl_mutex){+.+.}-{4:4}, at: crda_timeout_work+0x15/0x50
1 lock held by syz-executor/7255:
 #0: ffffffff8f51d808 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x8db/0x1c70
1 lock held by syz.0.359/7273:
 #0: ffffffff8f51d808 (rtnl_mutex){+.+.}-{4:4}, at: tun_chr_close+0x3e/0x1c0
4 locks held by syz-executor/7287:
4 locks held by syz-executor/7288:
2 locks held by dhcpcd/7290:
 #0: ffff88802a476258 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xcd0
 #1: ffffffff8e144c78 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x3b9/0x730

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 34 Comm: khungtaskd Not tainted 6.16.0-rc5-syzkaller-00159-g47c84997c686 #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: 7288 Comm: syz-executor Not tainted 6.16.0-rc5-syzkaller-00159-g47c84997c686 #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:__netif_receive_skb_core+0x424/0x4180
Code: 2c 84 c0 0f 85 fd 10 00 00 49 8d be 84 00 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 01 11 00 00 44 8b 3b 44 89 fe <83> e6 08 31 ff e8 12 25 67 f8 44 89 f8 83 e0 08 75 11 80 7c 24 58
RSP: 0000:ffffc900001dfd00 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff888121fb1881 RCX: ffff88810648b980
RDX: 0000000000000100 RSI: 0000000008000000 RDI: ffff888121fb1884
RBP: ffffc900001dff68 R08: ffff88810648b980 R09: 0000000000000002
R10: 000000000000a888 R11: 0000000000000100 R12: 1ffff110243f6310
R13: dffffc0000000000 R14: ffff888121fb1800 R15: 0000000008000000
FS:  0000000000000000(0000) GS:ffff8881a3c1b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055555b2ad350 CR3: 000000006a9fa000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 __netif_receive_skb+0x72/0x380
 netif_receive_skb+0x1cb/0x790
 NF_HOOK+0xa0/0x390
 br_handle_frame_finish+0x14d1/0x19b0
 br_nf_hook_thresh+0x3c6/0x4a0
 br_nf_pre_routing_finish_ipv6+0x948/0xd00
 br_nf_pre_routing_ipv6+0x37e/0x6b0
 br_handle_frame+0x982/0x14c0
 __netif_receive_skb_core+0x10e1/0x4180
 __netif_receive_skb+0x72/0x380
 process_backlog+0x60e/0x14f0
 __napi_poll+0xc7/0x480
 net_rx_action+0x707/0xe30
 handle_softirqs+0x286/0x870
 __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:_raw_spin_unlock_irqrestore+0xa8/0x110
Code: 74 05 e8 3b fd 55 f6 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 4f f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 03 1e 1f f6 65 8b 05 ac 8a 2e 07 85 c0 74 40 48 c7 04 24 0e 36
RSP: 0000:ffffc90001b9f7c0 EFLAGS: 00000206
RAX: 6a2e445df7534800 RBX: 0000000000000a02 RCX: 6a2e445df7534800
RDX: 0000000000000007 RSI: ffffffff8d998b0c RDI: 0000000000000001
RBP: ffffc90001b9f848 R08: ffffffff8fa1f3f7 R09: 1ffffffff1f43e7e
R10: dffffc0000000000 R11: fffffbfff1f43e7f R12: dffffc0000000000
R13: ffff88812ed74000 R14: ffffffff99d47640 R15: 1ffff92000373ef8
 debug_check_no_obj_freed+0x451/0x470
 __free_frozen_pages+0x509/0xe70
 __put_partials+0x161/0x1c0
 put_cpu_partial+0x17c/0x250
 __slab_free+0x2f7/0x400
 qlist_free_all+0x97/0x140
 kasan_quarantine_reduce+0x148/0x160
 __kasan_slab_alloc+0x22/0x80
 kmem_cache_alloc_noprof+0x1c1/0x3c0
 __pmd_alloc+0xc6/0x3b0
 __handle_mm_fault+0xa63/0x5620
 handle_mm_fault+0x40a/0x8e0
 do_user_addr_fault+0xa81/0x1390
 exc_page_fault+0x76/0xf0
 asm_exc_page_fault+0x26/0x30
RIP: 0033:0x7ff01dd5867c
Code: 00 00 77 4a 0f 10 4e 10 48 83 fa 40 76 c1 0f 10 56 20 0f 10 5e 30 0f 10 64 16 f0 0f 10 6c 16 e0 0f 10 74 16 d0 0f 10 7c 16 c0 <0f> 11 07 0f 11 4f 10 0f 11 57 20 0f 11 5f 30 0f 11 64 17 f0 0f 11
RSP: 002b:00007ffcf5a6d258 EFLAGS: 00010206
RAX: 000055555b2ad350 RBX: 0000000000000500 RCX: 000055555b2ad000
RDX: 0000000000000070 RSI: 00007ff01de99800 RDI: 000055555b2ad350
RBP: 00007ff01de99800 R08: 0000000000000002 R09: 00007ff01de3f3b4
R10: 000055555b2ad000 R11: 0000000000000246 R12: 0000000000000008
R13: 00000000000001b0 R14: 00000000000001b0 R15: 00007ff01df86700
 </TASK>
