INFO: task syz-executor:4027 blocked for more than 143 seconds.
      Not tainted 5.15.184-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:    0 pid: 4027 ppid:     1 flags:0x00000001
Call trace:
 __switch_to+0x2f4/0x558 arch/arm64/kernel/process.c:521
 context_switch kernel/sched/core.c:5030 [inline]
 __schedule+0xe00/0x1c0c kernel/sched/core.c:6376
 schedule+0x11c/0x1c8 kernel/sched/core.c:6459
 bit_wait+0x1c/0xac kernel/sched/wait_bit.c:199
 __wait_on_bit kernel/sched/wait_bit.c:49 [inline]
 out_of_line_wait_on_bit+0x15c/0x200 kernel/sched/wait_bit.c:64
 wait_on_bit include/linux/wait_bit.h:76 [inline]
 gfs2_glock_wait fs/gfs2/glock.c:1282 [inline]
 gfs2_glock_nq+0x8f8/0x141c fs/gfs2/glock.c:1538
 gfs2_glock_nq_init fs/gfs2/glock.h:246 [inline]
 __gfs2_lookup+0x110/0x268 fs/gfs2/inode.c:882
 gfs2_lookup+0x2c/0x3c fs/gfs2/inode.c:907
 __lookup_slow+0x24c/0x380 fs/namei.c:1663
 lookup_slow+0x5c/0x80 fs/namei.c:1680
 walk_component+0x2b0/0x3a8 fs/namei.c:1976
 lookup_last fs/namei.c:2431 [inline]
 path_lookupat+0x13c/0x3d0 fs/namei.c:2455
 filename_lookup+0x180/0x414 fs/namei.c:2484
 user_path_at_empty+0x5c/0x1a0 fs/namei.c:2883
 user_path_at include/linux/namei.h:57 [inline]
 ksys_umount fs/namespace.c:1781 [inline]
 __do_sys_umount fs/namespace.c:1789 [inline]
 __se_sys_umount fs/namespace.c:1787 [inline]
 __arm64_sys_umount+0xf4/0x178 fs/namespace.c:1787
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584

Showing all locks held in the system:
4 locks held by ksoftirqd/0/14:
3 locks held by kworker/1:1/25:
 #0: ffff0000c0020938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x678/0x1140 kernel/workqueue.c:2283
 #1: ffff80001b3d7c00 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_one_work+0x6b8/0x1140 kernel/workqueue.c:2285
 #2: ffff0000db026400 (&nsim_dev->port_list_lock){+.+.}-{3:3}, at: nsim_dev_trap_report_work+0x5c/0x938 drivers/net/netdevsim/dev.c:757
1 lock held by khungtaskd/27:
 #0: ffff8000143211e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:311
4 locks held by kworker/u4:3/153:
 #0: ffff0000c038c138 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x678/0x1140 kernel/workqueue.c:2283
 #1: ffff80001be67c00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x6b8/0x1140 kernel/workqueue.c:2285
 #2: ffff80001626c890 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x12c/0xa98 net/core/net_namespace.c:589
 #3: ffff800014325bb0 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x54/0x49c kernel/rcu/tree.c:4039
2 locks held by kworker/u4:4/519:
3 locks held by kworker/u4:6/1632:
 #0: ffff0000c0029138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x678/0x1140 kernel/workqueue.c:2283
 #1: ffff800023997c00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x6b8/0x1140 kernel/workqueue.c:2285
 #2: ffff800016278168 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:72
2 locks held by getty/3793:
 #0: ffff0000d35d5098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x40/0x50 drivers/tty/tty_ldsem.c:340
 #1: ffff80001bade2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x2f0/0xf6c drivers/tty/n_tty.c:2158
1 lock held by syz-executor/4027:
 #0: ffff0000de79c520 (&type->i_mutex_dir_key#15){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:797 [inline]
 #0: ffff0000de79c520 (&type->i_mutex_dir_key#15){.+.+}-{3:3}, at: lookup_slow+0x4c/0x80 fs/namei.c:1679
2 locks held by kworker/1:13/4651:
 #0: ffff0000c0020938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x678/0x1140 kernel/workqueue.c:2283
 #1: ffff800020f27c00 (free_ipc_work){+.+.}-{0:0}, at: process_one_work+0x6b8/0x1140 kernel/workqueue.c:2285
2 locks held by kworker/1:14/4652:
 #0: ffff0000c0021938 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x678/0x1140 kernel/workqueue.c:2283
 #1: ffff800020d87c00 ((work_completion)(&rew.rew_work)){+.+.}-{0:0}, at: process_one_work+0x6b8/0x1140 kernel/workqueue.c:2285
3 locks held by syz-executor/4787:
 #0: ffff0000d43c4ff0 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close+0x60/0x105c net/bluetooth/hci_core.c:1737
 #1: ffff0000d43c4078 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_do_close+0x334/0x105c net/bluetooth/hci_core.c:1782
 #2: ffff8000163b8da8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_disconn_cfm include/net/bluetooth/hci_core.h:1517 [inline]
 #2: ffff8000163b8da8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_hash_flush+0xb0/0x214 net/bluetooth/hci_conn.c:1622
3 locks held by syz-executor/4810:
 #0: ffff0000c8aecff0 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close+0x60/0x105c net/bluetooth/hci_core.c:1737
 #1: ffff0000c8aec078 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_do_close+0x334/0x105c net/bluetooth/hci_core.c:1782
 #2: ffff8000163b8da8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_disconn_cfm include/net/bluetooth/hci_core.h:1517 [inline]
 #2: ffff8000163b8da8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_hash_flush+0xb0/0x214 net/bluetooth/hci_conn.c:1622
7 locks held by syz-executor/4844:
 #0: ffff0000d4dec460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x228/0xa2c fs/read_write.c:590
 #1: ffff0000d5b4ec88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1c0/0x478 fs/kernfs/file.c:287
 #2: ffff0000cc017cb8 (kn->active#235){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x1dc/0x478 fs/kernfs/file.c:288
 #3: ffff80001584d0c8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xd4/0x33c drivers/net/netdevsim/bus.c:344
 #4: ffff0000db1cf178 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline]
 #4: ffff0000db1cf178 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1044 [inline]
 #4: ffff0000db1cf178 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0x9c/0x63c drivers/base/dd.c:1259
 #5: ffff0000db026400 (&nsim_dev->port_list_lock){+.+.}-{3:3}, at: nsim_dev_port_del_all drivers/net/netdevsim/dev.c:1359 [inline]
 #5: ffff0000db026400 (&nsim_dev->port_list_lock){+.+.}-{3:3}, at: nsim_dev_reload_destroy+0xf4/0x204 drivers/net/netdevsim/dev.c:1561
 #6: ffff800014325bb0 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x54/0x49c kernel/rcu/tree.c:4039
4 locks held by syz-executor/4876:
 #0: ffff0000d4dec460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x228/0xa2c fs/read_write.c:590
 #1: ffff0000da3b5088 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1c0/0x478 fs/kernfs/file.c:287
 #2: ffff0000cc017cb8 (kn->active#235){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x1dc/0x478 fs/kernfs/file.c:288
 #3: ffff80001584d0c8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xd4/0x33c drivers/net/netdevsim/bus.c:344
4 locks held by syz-executor/4918:
 #0: ffff0000d4dec460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x228/0xa2c fs/read_write.c:590
 #1: ffff0000e5ec4c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1c0/0x478 fs/kernfs/file.c:287
 #2: ffff0000cc017cb8 (kn->active#235){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x1dc/0x478 fs/kernfs/file.c:288
 #3: ffff80001584d0c8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xd4/0x33c drivers/net/netdevsim/bus.c:344
1 lock held by syz-executor/4924:
 #0: ffff800016278168 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
 #0: ffff800016278168 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x98c/0xd04 net/core/rtnetlink.c:5647
2 locks held by syz-executor/4944:
 #0: ffff800016278168 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
 #0: ffff800016278168 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x98c/0xd04 net/core/rtnetlink.c:5647
 #1: ffff800014325ca8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline]
 #1: ffff800014325ca8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x2f0/0x5e0 kernel/rcu/tree_exp.h:845
1 lock held by syz-executor/4956:
 #0: ffff800016278168 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
 #0: ffff800016278168 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x98c/0xd04 net/core/rtnetlink.c:5647

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