INFO: task kworker/1:4:6495 blocked for more than 143 seconds. Not tainted 6.16.0-rc1-syzkaller-g19272b37aa4f #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:4 state:D stack:0 pid:6495 tgid:6495 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: events reg_todo Call trace: __switch_to+0x414/0x834 arch/arm64/kernel/process.c:735 (T) context_switch kernel/sched/core.c:5396 [inline] __schedule+0x1414/0x2a28 kernel/sched/core.c:6785 __schedule_loop kernel/sched/core.c:6863 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6878 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6935 __mutex_lock_common+0xbd0/0x2190 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:799 class_wiphy_constructor include/net/cfg80211.h:6062 [inline] reg_process_self_managed_hints+0xc4/0x1c0 net/wireless/reg.c:3209 reg_todo+0x834/0x968 net/wireless/reg.c:3222 process_one_work+0x7e8/0x155c kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3321 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3402 kthread+0x5fc/0x75c kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:847 Showing all locks held in the system: 1 lock held by kthreadd/2: 3 locks held by kworker/u8:0/12: #0: ffff0000c0031948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff800097937bc0 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 #2: ffff800092768868 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 3 locks held by kworker/u8:1/14: 1 lock held by khungtaskd/32: #0: ffff80008f749e40 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330 3 locks held by kworker/u8:2/41: 3 locks held by kworker/u8:3/42: 3 locks held by kworker/u8:4/270: 3 locks held by kworker/u8:5/326: 3 locks held by kworker/u8:6/338: 3 locks held by kworker/u8:7/488: 3 locks held by kworker/u8:8/567: #0: ffff0000c0031948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff80009cab7bc0 ((crda_timeout).work){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 #2: ffff800092768868 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 3 locks held by kworker/u8:9/715: 2 locks held by kworker/0:2/1799: 3 locks held by kworker/R-ipv6_/4120: #0: ffff0000d2492948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff8000a0b37ba0 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 #2: ffff800092768868 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 6 locks held by kworker/R-bat_e/4216: 1 lock held by klogd/6092: 3 locks held by dhcpcd/6158: 2 locks held by kworker/0:3/6234: 2 locks held by getty/6256: #0: ffff0000cca1e0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009b8db2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x34c/0xfa4 drivers/tty/n_tty.c:2222 2 locks held by syz-executor/6488: 2 locks held by syz-executor/6489: 2 locks held by syz-executor/6490: #0: ffff0000c95f00e0 (&type->s_umount_key#61){++++}-{4:4}, at: __super_lock fs/super.c:57 [inline] #0: ffff0000c95f00e0 (&type->s_umount_key#61){++++}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline] #0: ffff0000c95f00e0 (&type->s_umount_key#61){++++}-{4:4}, at: deactivate_super+0xd8/0x100 fs/super.c:506 #1: ffff000103b62508 (btrfs_trans_num_writers){++++}-{0:0}, at: spin_unlock include/linux/spinlock.h:391 [inline] #1: ffff000103b62508 (btrfs_trans_num_writers){++++}-{0:0}, at: join_transaction+0x334/0xb5c fs/btrfs/transaction.c:295 4 locks held by syz-executor/6491: 4 locks held by kworker/1:4/6495: #0: ffff0000c0028d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff8000a4337bc0 (reg_work){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 #2: ffff800092768868 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 #3: ffff0000f7370768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: class_wiphy_constructor include/net/cfg80211.h:6062 [inline] #3: ffff0000f7370768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: reg_process_self_managed_hints+0xc4/0x1c0 net/wireless/reg.c:3209 1 lock held by udevd/6628: 3 locks held by udevd/6756: 3 locks held by kworker/u8:10/6769: 3 locks held by kworker/u8:11/6979: 1 lock held by udevadm/7268: 3 locks held by udevadm/7278: 1 lock held by btrfs-transacti/7285: #0: ffff000103b60830 (&fs_info->transaction_kthread_mutex){+.+.}-{4:4}, at: transaction_kthread+0xc8/0x430 fs/btrfs/disk-io.c:1560 3 locks held by kworker/u8:12/7294: 4 locks held by kworker/u8:13/7296: 4 locks held by kworker/u8:14/7297: #0: ffff0000c78de948 ((wq_completion)wg-kex-wg1#7){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff8000a0b97bc0 ((work_completion)(&peer->transmit_handshake_work)){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 #2: ffff0000d9c95308 (&wg->static_identity.lock){++++}-{4:4}, at: wg_noise_handshake_create_initiation+0x10c/0x6c8 drivers/net/wireguard/noise.c:529 #3: ffff0000cd352ad8 (&handshake->lock){++++}-{4:4}, at: wg_noise_handshake_create_initiation+0x114/0x6c8 drivers/net/wireguard/noise.c:530 =============================================