INFO: task kworker/0:2:1802 blocked for more than 145 seconds. Not tainted 6.15.0-rc6-syzkaller-gc919f08732cc #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:2 state:D stack:0 pid:1802 tgid:1802 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:5382 [inline] __schedule+0x13b0/0x28d4 kernel/sched/core.c:6767 __schedule_loop kernel/sched/core.c:6845 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6860 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6917 __mutex_lock_common+0xbd0/0x2190 kernel/locking/mutex.c:678 __mutex_lock kernel/locking/mutex.c:746 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:798 class_wiphy_constructor include/net/cfg80211.h:6092 [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+0x7e8/0x156c kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3400 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: 3 locks held by kworker/u8:0/12: 3 locks held by kworker/u8:1/13: 2 locks held by kworker/1:0/24: 2 locks held by kworker/1:1/26: 1 lock held by khungtaskd/32: #0: ffff80008f508aa0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330 3 locks held by kworker/u8:2/44: 3 locks held by kworker/u8:3/45: 1 lock held by pr/ttyAMA0/46: 3 locks held by kworker/u8:4/245: 3 locks held by kworker/u8:5/277: 3 locks held by kworker/u8:6/315: 3 locks held by kworker/u8:7/750: 4 locks held by kworker/0:2/1802: #0: ffff0000c0028d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212 #1: ffff80009f3a7bc0 (reg_work){+.+.}-{0:0}, at: process_one_work+0x6ec/0x156c kernel/workqueue.c:3212 #2: ffff80009248b628 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 #3: ffff0000f7018768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: class_wiphy_constructor include/net/cfg80211.h:6092 [inline] #3: ffff0000f7018768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: reg_process_self_managed_hints+0xc4/0x1c0 net/wireless/reg.c:3209 3 locks held by kworker/u8:8/2236: 2 locks held by kworker/1:2/2299: 3 locks held by kworker/R-ipv6_/4140: #0: ffff0000d3028948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212 #1: ffff8000a0767ba0 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6ec/0x156c kernel/workqueue.c:3212 #2: ffff80009248b628 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 5 locks held by kworker/R-bat_e/4221: 1 lock held by udevd/6104: 2 locks held by getty/6254: #0: ffff0000d32140a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009b5eb2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x34c/0xfa0 drivers/tty/n_tty.c:2222 3 locks held by syz-executor/6488: 2 locks held by syz-executor/6490: #0: ffff0000db3c40e0 (&type->s_umount_key#30){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff0000db3c40e0 (&type->s_umount_key#30){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff0000db3c40e0 (&type->s_umount_key#30){++++}-{4:4}, at: deactivate_super+0xd8/0x100 fs/super.c:505 #1: ffff0000f229c990 (&sb->s_type->i_mutex_key#9){++++}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline] #1: ffff0000f229c990 (&sb->s_type->i_mutex_key#9){++++}-{4:4}, at: ext4_quota_off+0x1a0/0x490 fs/ext4/super.c:7205 2 locks held by kworker/1:3/6544: 4 locks held by kworker/1:6/6578: 3 locks held by kworker/u8:9/6589: 2 locks held by kworker/0:8/6706: 1 lock held by kworker/0:28/6733: 2 locks held by kworker/0:29/6734: 2 locks held by kworker/0:30/6735: 2 locks held by kworker/0:32/6737: 2 locks held by kworker/0:33/6738: 2 locks held by kworker/0:34/6739: 2 locks held by kworker/0:35/6740: 2 locks held by kworker/0:36/6741: 3 locks held by kworker/u8:10/6837: 2 locks held by syz.3.146/7475: #0: ffff0000cb4a70a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_write+0x3c/0x4c drivers/tty/tty_ldsem.c:366 #1: ffff80009248b628 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 1 lock held by syz.3.150/7525: #0: ffff0000f3b940e0 (&type->s_umount_key#56/1){+.+.}-{4:4}, at: alloc_super+0x1a0/0x80c fs/super.c:344 3 locks held by syz.5.163/7594: 1 lock held by dhcpcd-run-hook/7596: 3 locks held by kworker/u8:11/7600: 3 locks held by kworker/u8:12/7601: #0: ffff0000c0031948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212 #1: ffff80009d507bc0 ((crda_timeout).work){+.+.}-{0:0}, at: process_one_work+0x6ec/0x156c kernel/workqueue.c:3212 #2: ffff80009248b628 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 3 locks held by kworker/u8:13/7604: #0: ffff0000c0031948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212 #1: ffff80009d4f7bc0 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work+0x6ec/0x156c kernel/workqueue.c:3212 #2: ffff80009248b628 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 2 locks held by kworker/u8:14/7605: 2 locks held by syz-executor/7606: 2 locks held by kworker/u8:15/7607: =============================================