INFO: task syz-executor.4:5080 blocked for more than 143 seconds.
      Not tainted 6.1.25-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4  state:D stack:0     pid:5080  ppid:4366   flags:0x00000009
Call trace:
 __switch_to+0x320/0x754 arch/arm64/kernel/process.c:553
 context_switch kernel/sched/core.c:5241 [inline]
 __schedule+0xee4/0x1c98 kernel/sched/core.c:6554
 schedule+0xc4/0x170 kernel/sched/core.c:6630
 rwsem_down_write_slowpath+0xc80/0x156c kernel/locking/rwsem.c:1189
 __down_write_common kernel/locking/rwsem.c:1314 [inline]
 __down_write kernel/locking/rwsem.c:1323 [inline]
 down_write+0x84/0x88 kernel/locking/rwsem.c:1574
 inode_lock include/linux/fs.h:756 [inline]
 open_last_lookups fs/namei.c:3478 [inline]
 path_openat+0x5ec/0x2548 fs/namei.c:3711
 do_filp_open+0x1bc/0x3cc fs/namei.c:3741
 do_sys_openat2+0x128/0x3d8 fs/open.c:1310
 do_sys_open fs/open.c:1326 [inline]
 __do_sys_openat fs/open.c:1342 [inline]
 __se_sys_openat fs/open.c:1337 [inline]
 __arm64_sys_openat+0x1f0/0x240 fs/open.c:1337
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206
 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
 #0: ffff800015754930 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:510
1 lock held by rcu_tasks_trace/13:
 #0: ffff800015755130 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:510
1 lock held by khungtaskd/28:
 #0: ffff800015754760 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:305
3 locks held by kworker/1:2/1954:
 #0: ffff0000c0020d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x664/0x1404 kernel/workqueue.c:2262
 #1: ffff800022d67c20 (fqdir_free_work){+.+.}-{0:0}, at: process_one_work+0x6a8/0x1404 kernel/workqueue.c:2264
 #2: ffff800015759c00 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x58/0x5c4 kernel/rcu/tree.c:3953
2 locks held by getty/3988:
 #0: ffff0000d3e8e098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: ffff80001ca102f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1210 drivers/tty/n_tty.c:2177
2 locks held by kworker/u4:6/4448:
6 locks held by syz-executor.4/5046:
2 locks held by syz-executor.4/5080:
 #0: ffff0000d6844460 (sb_writers#19){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:393
 #1: ffff0000d501af80 (&type->i_mutex_dir_key#16){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #1: ffff0000d501af80 (&type->i_mutex_dir_key#16){+.+.}-{3:3}, at: open_last_lookups fs/namei.c:3478 [inline]
 #1: ffff0000d501af80 (&type->i_mutex_dir_key#16){+.+.}-{3:3}, at: path_openat+0x5ec/0x2548 fs/namei.c:3711
6 locks held by syz-executor.3/5133:
2 locks held by syz-executor.3/5148:
 #0: ffff0001323bc460 (sb_writers#19){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:393
 #1: ffff0000d501e928 (&type->i_mutex_dir_key#16){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #1: ffff0000d501e928 (&type->i_mutex_dir_key#16){+.+.}-{3:3}, at: open_last_lookups fs/namei.c:3478 [inline]
 #1: ffff0000d501e928 (&type->i_mutex_dir_key#16){+.+.}-{3:3}, at: path_openat+0x5ec/0x2548 fs/namei.c:3711
5 locks held by kworker/u4:10/5616:
 #0: ffff0000c03dd138 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x664/0x1404 kernel/workqueue.c:2262
 #1: ffff8000236d7c20 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x6a8/0x1404 kernel/workqueue.c:2264
 #2: ffff800017b3f710 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xf4/0x994 net/core/net_namespace.c:563
 #3: ffff800017b4b5a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:74
 #4: ffff0000cf957e80 (&caifn->caifdevs.lock){+.+.}-{3:3}, at: caif_exit_net+0x8c/0x528 net/caif/caif_dev.c:528
1 lock held by syz-executor.1/6652:
1 lock held by syz-executor.4/6694:

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