INFO: task kworker/1:2:792 blocked for more than 143 seconds.
      Not tainted 6.16.0-syzkaller-06600-g1dbf1d590d10 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:2     state:D stack:26416 pid:792   tgid:792   ppid:2      task_flags:0x4208060 flags:0x00004000
Workqueue: events reg_todo
Call Trace:
 <TASK>
 __schedule+0x1737/0x4d30
 schedule+0x165/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7e3/0x1340
 reg_process_self_managed_hints+0xad/0x1b0
 reg_todo+0x78d/0x890
 process_scheduled_works+0xae1/0x17b0
 worker_thread+0x8a0/0xda0
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>

Showing all locks held in the system:
3 locks held by kworker/u8:0/12:
 #0: ffff888107eeb948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc900000f7bc0 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffffffff8f509008 (rtnl_mutex){+.+.}-{4:4}, at: addrconf_verify_work+0x19/0x30
1 lock held by khungtaskd/34:
 #0: ffffffff8e13c4e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by kswapd0/85:
3 locks held by kswapd1/87:
6 locks held by kworker/u9:5/1089:
1 lock held by syslogd/5251:
 #0: ffffffff8e845770 (tomoyo_ss){.+.+}-{0:0}, at: tomoyo_path_perm+0x1e3/0x4b0
4 locks held by udevd/5269:
 #0: ffffffff8e1f4250 (dup_mmap_sem){.+.+}-{0:0}, at: copy_mm+0x131/0x4b0
 #1: ffff888026c18ca0 (&mm->mmap_lock){++++}-{4:4}, at: dup_mmap+0x12e/0x1ac0
 #2: ffff888026c181e0 (&mm->mmap_lock/1){+.+.}-{4:4}, at: dup_mmap+0x217/0x1ac0
 #3: ffffffff8e243360 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_direct_reclaim+0xb8/0x300
4 locks held by kworker/1:3/5287:
 #0: ffff88801a480d48 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc9000286fbc0 (reg_work){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffffffff8f509008 (rtnl_mutex){+.+.}-{4:4}, at: reg_todo+0x1c/0x890
 #3: ffff888112dd8768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: reg_process_self_managed_hints+0xad/0x1b0
1 lock held by dhcpcd/5565:
 #0: ffffffff8e845770 (tomoyo_ss){.+.+}-{0:0}, at: tomoyo_path_number_perm+0x1bc/0x5a0
4 locks held by dhcpcd/5566:
 #0: ffffffff8e1f4250 (dup_mmap_sem){.+.+}-{0:0}, at: copy_mm+0x131/0x4b0
 #1: ffff8881080201e0 (&mm->mmap_lock){++++}-{4:4}, at: dup_mmap+0x12e/0x1ac0
 #2: ffff888104b9d7e0 (&mm->mmap_lock/1){+.+.}-{4:4}, at: dup_mmap+0x217/0x1ac0
 #3: ffffffff8e243360 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_direct_reclaim+0xb8/0x300
2 locks held by getty/5648:
 #0: ffff888022a7b0a0 (&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/5820:
 #0: ffffffff8f509008 (rtnl_mutex){+.+.}-{4:4}, at: tun_chr_close+0x3e/0x1c0
1 lock held by syz-executor/5822:
 #0: ffffffff8f509008 (rtnl_mutex){+.+.}-{4:4}, at: tun_chr_close+0x3e/0x1c0
3 locks held by kworker/0:4/5867:
 #0: ffff88801a481d48 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc9000358fbc0 ((reg_check_chans).work){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffffffff8f509008 (rtnl_mutex){+.+.}-{4:4}, at: reg_check_chans_work+0x95/0xf00
1 lock held by syz.1.441/6921:
 #0: ffffffff8f509008 (rtnl_mutex){+.+.}-{4:4}, at: tun_chr_close+0x3e/0x1c0
1 lock held by syz-executor/6924:
 #0: ffffffff8e243360 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_direct_reclaim+0xb8/0x300
2 locks held by syz-executor/6928:
 #0: ffff888026c1d7e0 (&mm->mmap_lock){++++}-{4:4}, at: lock_mm_and_find_vma+0x32/0x300
 #1: ffffffff8e243360 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_direct_reclaim+0xb8/0x300
2 locks held by syz-executor/6932:
 #0: ffff8880270b3588 (vm_lock){++++}-{0:0}, at: do_user_addr_fault+0x2d9/0x1390
 #1: ffffffff8e243360 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_direct_reclaim+0xb8/0x300

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 34 Comm: khungtaskd Not tainted 6.16.0-syzkaller-06600-g1dbf1d590d10 #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+0xf93/0xfe0
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 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: 1089 Comm: kworker/u9:5 Not tainted 6.16.0-syzkaller-06600-g1dbf1d590d10 #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_unbound cfg80211_wiphy_work
RIP: 0010:deref_stack_reg+0x1c6/0x230
Code: 08 00 00 49 89 c6 48 8b 5c 24 18 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 63 e0 af 00 4c 89 33 b0 01 eb 02 31 c0 <48> 83 c4 20 5b 41 5c 41 5d 41 5e 41 5f 5d e9 d7 b8 ff 09 cc 44 89
RSP: 0018:ffffc90000006340 EFLAGS: 00000246
RAX: 1ffff92000000c01 RBX: ffffc900000064a8 RCX: 0000000000000001
RDX: ffffc900000064a8 RSI: dffffc0000000000 RDI: ffffc90006a07d90
RBP: 1ffff92000000c8d R08: ffffc90006a07d90 R09: 0000000000000000
R10: ffffc900000064b8 R11: fffff52000000c99 R12: 1ffff92000000c8e
R13: 1ffff92000000c8f R14: ffffc90006a07e70 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b8680000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc0f9bcd98 CR3: 000000011057e000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 unwind_next_frame+0x17c4/0x2390
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x46/0x50
 __kasan_slab_free+0x62/0x70
 kmem_cache_free+0x18f/0x400
 br_nf_dev_queue_xmit+0x4ee/0x24a0
 NF_HOOK+0x61b/0x6b0
 br_nf_post_routing+0xb66/0xfe0
 nf_hook_slow+0xc5/0x220
 NF_HOOK+0x215/0x3c0
 br_forward_finish+0xd3/0x130
 br_nf_forward_finish+0xa40/0xe60
 NF_HOOK+0x61b/0x6b0
 br_nf_forward_ip+0x647/0x7e0
 nf_hook_slow+0xc5/0x220
 NF_HOOK+0x215/0x3c0
 __br_forward+0x41e/0x600
 maybe_deliver+0xb5/0x160
 br_flood+0x31a/0x6a0
 br_handle_frame_finish+0x14b4/0x19b0
 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+0x10b9/0x4020
 __netif_receive_skb+0x72/0x380
 process_backlog+0x60e/0x14f0
 __napi_poll+0xc7/0x360
 net_rx_action+0x707/0xe30
 handle_softirqs+0x286/0x870
 do_softirq+0xec/0x180
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0x17d/0x1c0
 ieee80211_ibss_work+0x300/0x1060
 cfg80211_wiphy_work+0x2df/0x460
 process_scheduled_works+0xae1/0x17b0
 worker_thread+0x8a0/0xda0
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>
