INFO: task kworker/1:3:6526 blocked for more than 145 seconds. Not tainted 6.16.0-rc4-syzkaller-g7482bb149b9f #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:3 state:D stack:0 pid:6526 tgid:6526 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: events reg_todo Call trace: __switch_to+0x414/0x834 arch/arm64/kernel/process.c:737 (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: 7 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: ffff80008f859a00 (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: 1 lock held by pr/ttyAMA0/43: 3 locks held by kworker/u8:4/154: 3 locks held by kworker/u8:5/237: 3 locks held by kworker/u8:6/620: 3 locks held by kworker/1:2/1798: 3 locks held by kworker/u8:7/1957: 3 locks held by kworker/u8:8/2133: 3 locks held by kworker/u8:9/2168: 2 locks held by kworker/0:2/2268: 3 locks held by kworker/R-ipv6_/4172: #0: ffff0000d2394948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff8000a20f7ba0 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 #2: ffff8000928b54e8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 2 locks held by kworker/R-bat_e/4253: 4 locks held by kworker/u8:10/4524: 1 lock held by klogd/6131: 2 locks held by udevd/6142: 1 lock held by dhcpcd/6196: 1 lock held by dhcpcd/6197: 1 lock held by crond/6271: 2 locks held by getty/6289: #0: ffff0000cb8dc0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009ba3b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x34c/0xfa4 drivers/tty/n_tty.c:2222 4 locks held by kworker/1:3/6526: #0: ffff0000c0028d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff8000a1837bc0 (reg_work){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 #2: ffff8000928b54e8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 #3: ffff0000f7a18768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: class_wiphy_constructor include/net/cfg80211.h:6062 [inline] #3: ffff0000f7a18768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: reg_process_self_managed_hints+0xc4/0x1c0 net/wireless/reg.c:3209 5 locks held by syz-executor/6529: #0: ffff0000d2eae0e0 (&type->s_umount_key#50){++++}-{4:4}, at: __super_lock fs/super.c:57 [inline] #0: ffff0000d2eae0e0 (&type->s_umount_key#50){++++}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline] #0: ffff0000d2eae0e0 (&type->s_umount_key#50){++++}-{4:4}, at: deactivate_super+0xd8/0x100 fs/super.c:506 #1: ffff0000dbe565d0 (btrfs_trans_completed){.+.+}-{0:0}, at: btrfs_commit_transaction+0xf1c/0x2b44 fs/btrfs/transaction.c:-1 #2: ffff0000dbe565a8 (btrfs_trans_super_committed){.+.+}-{0:0}, at: btrfs_commit_transaction+0xf48/0x2b44 fs/btrfs/transaction.c:-1 #3: ffff0000dbe547a0 (&fs_info->tree_log_mutex){+.+.}-{4:4}, at: btrfs_commit_transaction+0x18fc/0x2b44 fs/btrfs/transaction.c:2515 #4: ffff0000f70878d8 (&fs_devs->device_list_mutex){+.+.}-{4:4}, at: write_all_supers+0xe28/0x31c0 fs/btrfs/disk-io.c:4027 2 locks held by syz-executor/6535: #0: ffff0000cf2240e0 (&type->s_umount_key#68){+.+.}-{4:4}, at: __super_lock fs/super.c:57 [inline] #0: ffff0000cf2240e0 (&type->s_umount_key#68){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline] #0: ffff0000cf2240e0 (&type->s_umount_key#68){+.+.}-{4:4}, at: deactivate_super+0xd8/0x100 fs/super.c:506 #1: ffff000103400278 (&c->state_lock){+.+.}-{4:4}, at: __bch2_fs_stop+0xfc/0x800 fs/bcachefs/super.c:676 1 lock held by kworker/R-wg-cr/6559: #0: ffff80008f701368 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_attach_to_pool+0x40/0x348 kernel/workqueue.c:2678 6 locks held by kworker/R-wg-cr/6565: 1 lock held by kworker/R-wg-cr/6570: 1 lock held by kworker/R-wg-cr/6572: #0: ffff80008f701368 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_attach_to_pool+0x40/0x348 kernel/workqueue.c:2678 2 locks held by kworker/0:4/6586: 2 locks held by kworker/1:5/6607: 2 locks held by udevd/6649: 1 lock held by udevd/6667: #0: ffff0000c15463b0 (&sb->s_type->i_mutex_key#8){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:884 [inline] #0: ffff0000c15463b0 (&sb->s_type->i_mutex_key#8){++++}-{4:4}, at: blkdev_read_iter+0x2a0/0x3dc block/fops.c:832 1 lock held by syz.0.134/7302: 2 locks held by udevadm/7373: 2 locks held by syz.3.152/7376: #0: ffff0000d23500e0 (&type->s_umount_key#77/1){+.+.}-{4:4}, at: alloc_super+0x1a0/0x80c fs/super.c:345 #1: ffff0000c15463b0 (&sb->s_type->i_mutex_key#8){++++}-{4:4}, at: inode_lock include/linux/fs.h:869 [inline] #1: ffff0000c15463b0 (&sb->s_type->i_mutex_key#8){++++}-{4:4}, at: set_blocksize+0x1c4/0x440 block/bdev.c:203 3 locks held by kworker/u8:11/7379: #0: ffff0000c0031948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff8000a3da7bc0 ((crda_timeout).work){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 #2: ffff8000928b54e8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 3 locks held by kworker/u8:12/7380: #0: ffff0000c0031948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff8000a3db7bc0 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 #2: ffff8000928b54e8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 3 locks held by kworker/u8:13/7381: 1 lock held by syz-executor/7383: 1 lock held by kworker/u8:14/7384: #0: ffff80008f701368 (wq_pool_attach_mutex){+.+.}-{4:4}, at: set_pf_worker kernel/workqueue.c:3327 [inline] #0: ffff80008f701368 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_thread+0x64/0xed8 kernel/workqueue.c:3353 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