INFO: task syz-executor:15328 blocked for more than 143 seconds.
      Not tainted 6.16.0-rc5-syzkaller-00193-g40f92e79b0aa-dirty #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:22504 pid:15328 tgid:15328 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
 del_device_store+0xd1/0x360
 kernfs_fop_write_iter+0x378/0x4f0
 vfs_write+0x54b/0xa90
 ksys_write+0x145/0x250
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9520b8d3df
RSP: 002b:00007fff906e0f20 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f9520b8d3df
RDX: 0000000000000001 RSI: 00007fff906e0f70 RDI: 0000000000000005
RBP: 00007f9520c11d8d R08: 0000000000000000 R09: 00007fff906e0d77
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000001
R13: 00007fff906e0f70 R14: 00007f95218e4620 R15: 0000000000000003
 </TASK>

Showing all locks held in the system:
3 locks held by kworker/u8:1/13:
 #0: ffff8881094cd948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc90000107bc0 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffffffff8f51d888 (rtnl_mutex){+.+.}-{4:4}, at: addrconf_dad_work+0x112/0x14b0
1 lock held by khungtaskd/34:
 #0: ffffffff8e13f160 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by kworker/1:2/792:
2 locks held by getty/5666:
 #0: ffff8881070210a0 (&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
6 locks held by kworker/u8:2/5857:
 #0: ffff88801b2f6948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc9000355fbc0 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffffffff8f510c90 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xf7/0x800
 #3: ffff8881124340e8 (&dev->mutex){....}-{4:4}, at: devlink_pernet_pre_exit+0x10a/0x3d0
 #4: ffff888117a59250 (&devlink->lock_key#7){+.+.}-{4:4}, at: devlink_pernet_pre_exit+0x11c/0x3d0
 #5: ffffffff8e144b40 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x4c/0x570
6 locks held by kworker/1:6/14629:
7 locks held by syz-executor/15190:
 #0: ffff888020650428 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x211/0xa90
 #1: ffff88802a238888 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1e0/0x4f0
 #2: ffff88810a786698 (kn->active#48){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x203/0x4f0
 #3: ffffffff8edab048 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd1/0x360
 #4: ffff888117a750e8 (&dev->mutex){....}-{4:4}, at: device_release_driver_internal+0xb6/0x7c0
 #5: ffff888117a76250 (&devlink->lock_key#2){+.+.}-{4:4}, at: nsim_drv_remove+0x50/0x160
 #6: ffffffff8e144b40 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x4c/0x570
1 lock held by syz.0.3633/15240:
2 locks held by kworker/1:7/15261:
4 locks held by syz-executor/15328:
 #0: ffff888020650428 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x211/0xa90
 #1: ffff888109cabc88 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1e0/0x4f0
 #2: ffff88810a786698 (kn->active#48){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x203/0x4f0
 #3: ffffffff8edab048 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd1/0x360
1 lock held by syz.9.3697/15436:
 #0: ffffffff8e144b40 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x4c/0x570
4 locks held by syz-executor/15446:
 #0: ffff888020650428 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x211/0xa90
 #1: ffff888038ebb488 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1e0/0x4f0
 #2: ffff88810a786698 (kn->active#48){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x203/0x4f0
 #3: ffffffff8edab048 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd1/0x360
4 locks held by syz-executor/15455:
 #0: ffff888020650428 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x211/0xa90
 #1: ffff888011ff2488 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1e0/0x4f0
 #2: ffff88810a786698 (kn->active#48){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x203/0x4f0
 #3: ffffffff8edab048 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd1/0x360
4 locks held by syz-executor/15494:
 #0: ffff888020650428 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x211/0xa90
 #1: ffff88802f7c2088 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1e0/0x4f0
 #2: ffff88810a786698 (kn->active#48){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x203/0x4f0
 #3: ffffffff8edab048 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd1/0x360
4 locks held by syz-executor/15508:
 #0: ffff888020650428 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x211/0xa90
 #1: ffff888039d0d488 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1e0/0x4f0
 #2: ffff88810a786698 (kn->active#48){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x203/0x4f0
 #3: ffffffff8edab048 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd1/0x360
4 locks held by syz-executor/15517:
 #0: ffff888020650428 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x211/0xa90
 #1: ffff888064e37888 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1e0/0x4f0
 #2: ffff88810a786698 (kn->active#48){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x203/0x4f0
 #3: ffffffff8edab048 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd1/0x360
4 locks held by syz-executor/15526:
 #0: ffff888020650428 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x211/0xa90
 #1: ffff888039c20088 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1e0/0x4f0
 #2: ffff88810a786698 (kn->active#48){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x203/0x4f0
 #3: ffffffff8edab048 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd1/0x360
3 locks held by syz-executor/15568:
 #0: ffffffff8eca4d60 (&ops->srcu#2){.+.+}-{0:0}, at: rtnl_link_ops_get+0x23/0x250
 #1: ffffffff8f51d888 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x8db/0x1c70
 #2: ffffffff8e144c78 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x2f6/0x730

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 34 Comm: khungtaskd Not tainted 6.16.0-rc5-syzkaller-00193-g40f92e79b0aa-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: 15261 Comm: kworker/1:7 Not tainted 6.16.0-rc5-syzkaller-00193-g40f92e79b0aa-dirty #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: events_power_efficient wg_ratelimiter_gc_entries
RIP: 0010:rcu_is_watching+0x6c/0xb0
Code: 7c 00 48 c7 c3 58 7f a1 92 49 03 1e 48 89 d8 48 c1 e8 03 42 0f b6 04 38 84 c0 75 34 8b 03 65 ff 0d 19 20 f9 10 74 11 83 e0 04 <c1> e8 02 5b 41 5e 41 5f c3 cc cc cc cc cc e8 81 76 8c ff eb e8 48
RSP: 0018:ffffc900001e00a0 EFLAGS: 00000002
RAX: 0000000000000004 RBX: ffff888136632f58 RCX: 697fb20912c7b600
RDX: 0000000000000000 RSI: ffffffff8be29da0 RDI: ffffffff8be29d60
RBP: 0000000000000000 R08: ffffffff8fa1f3f7 R09: 1ffffffff1f43e7e
R10: dffffc0000000000 R11: fffffbfff1f43e7f R12: ffffea000470d600
R13: 0000000000000000 R14: ffffffff8dbbec78 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881a3c1b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000020c78 CR3: 000000002828a000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 trace_irq_disable+0x37/0x110
 kasan_quarantine_put+0x3d/0x220
 kmem_cache_free+0x18f/0x400
 skb_release_data+0x62d/0x7c0
 consume_skb+0x9e/0xf0
 nft_synproxy_eval_v4+0x376/0x560
 nft_synproxy_do_eval+0x345/0x570
 nft_do_chain+0x40c/0x1920
 nft_do_chain_inet+0x25d/0x340
 nf_hook_slow+0xc5/0x220
 NF_HOOK+0x206/0x3a0
 NF_HOOK+0x30c/0x3a0
 __netif_receive_skb+0x143/0x380
 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:lock_release+0x2b5/0x3e0
Code: 51 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f7 44 24 20 00 02 00 00 75 56 f7 c3 00 02 00 00 74 01 fb 65 48 8b 05 2b fe 01 11 <48> 3b 44 24 28 0f 85 8b 00 00 00 48 83 c4 30 5b 41 5c 41 5d 41 5e
RSP: 0018:ffffc900060879b0 EFLAGS: 00000206
RAX: 697fb20912c7b600 RBX: 0000000000000283 RCX: 697fb20912c7b600
RDX: 0000000000000002 RSI: ffffffff8db86617 RDI: ffffffff8be29dc0
RBP: ffff88810a076180 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000c10f34 R12: 0000000000000002
R13: 0000000000000002 R14: ffffffff8ec7e938 R15: ffff88810a075640
 _raw_spin_unlock+0x16/0x50
 wg_ratelimiter_gc_entries+0x384/0x450
 process_scheduled_works+0xae1/0x17b0
 worker_thread+0x8a0/0xda0
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>
