=====================================================
WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected
6.17.0-rc1-syzkaller #0 Not tainted
-----------------------------------------------------
syz.5.5572/1099 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire:
ffffffff8de0c058 (tasklist_lock){.+.+}-{3:3}, at: send_sigio+0x101/0x370 fs/fcntl.c:921

and this task is already holding:
ffff88807dfb19a0 (&f_owner->lock){....}-{3:3}, at: send_sigio+0x38/0x370 fs/fcntl.c:907
which would create a new lock dependency:
 (&f_owner->lock){....}-{3:3} -> (tasklist_lock){.+.+}-{3:3}

but this new dependency connects a SOFTIRQ-irq-safe lock:
 (&client->buffer_lock){..-.}-{3:3}

... which became SOFTIRQ-irq-safe at:
  lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
  __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
  _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
  spin_lock include/linux/spinlock.h:351 [inline]
  evdev_pass_values+0xb9/0xbd0 drivers/input/evdev.c:261
  evdev_events+0x1e6/0x340 drivers/input/evdev.c:306
  input_pass_values+0x285/0x890 drivers/input/input.c:127
  input_event_dispose+0x3e5/0x6b0 drivers/input/input.c:352
  input_event+0x89/0xe0 drivers/input/input.c:395
  hidinput_hid_event+0x132c/0x1c90 drivers/hid/hid-input.c:1716
  hid_process_event+0x4be/0x620 drivers/hid/hid-core.c:1556
  hid_process_report drivers/hid/hid-core.c:1704 [inline]
  hid_report_raw_event+0xe91/0x16d0 drivers/hid/hid-core.c:2065
  __hid_input_report drivers/hid/hid-core.c:2135 [inline]
  hid_input_report+0x43e/0x520 drivers/hid/hid-core.c:2157
  hid_irq_in+0x47e/0x6d0 drivers/hid/usbhid/hid-core.c:286
  __usb_hcd_giveback_urb+0x41a/0x690 drivers/usb/core/hcd.c:1663
  dummy_timer+0x862/0x4550 drivers/usb/gadget/udc/dummy_hcd.c:1995
  __run_hrtimer kernel/time/hrtimer.c:1761 [inline]
  __hrtimer_run_queues+0x52c/0xc60 kernel/time/hrtimer.c:1825
  hrtimer_run_softirq+0x187/0x2b0 kernel/time/hrtimer.c:1842
  handle_softirqs+0x283/0x870 kernel/softirq.c:579
  __do_softirq kernel/softirq.c:613 [inline]
  invoke_softirq kernel/softirq.c:453 [inline]
  __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
  irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
  instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
  sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050
  asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
  native_irq_enable arch/x86/include/asm/irqflags.h:42 [inline]
  arch_local_irq_enable arch/x86/include/asm/irqflags.h:119 [inline]
  raw_spin_rq_unlock_irq kernel/sched/sched.h:1531 [inline]
  finish_lock_switch kernel/sched/core.c:5105 [inline]
  finish_task_switch+0x26b/0x950 kernel/sched/core.c:5223
  context_switch kernel/sched/core.c:5360 [inline]
  __schedule+0x17a0/0x4cc0 kernel/sched/core.c:6961
  preempt_schedule_notrace+0xd1/0x110 kernel/sched/core.c:7238
  preempt_schedule_notrace_thunk+0x16/0x30 arch/x86/entry/thunk.S:13
  rcu_is_watching+0x7f/0xb0 kernel/rcu/tree.c:752
  trace_lock_acquire include/trace/events/lock.h:24 [inline]
  lock_acquire+0x5f/0x360 kernel/locking/lockdep.c:5831
  down_write+0x96/0x1f0 kernel/locking/rwsem.c:1590
  inode_lock include/linux/fs.h:869 [inline]
  process_measurement+0x3d8/0x1a40 security/integrity/ima/ima_main.c:280
  ima_file_check+0xd7/0x120 security/integrity/ima/ima_main.c:633
  security_file_post_open+0xbb/0x290 security/security.c:3160
  do_open fs/namei.c:3889 [inline]
  path_openat+0x2f26/0x3830 fs/namei.c:4046
  do_filp_open+0x1fa/0x410 fs/namei.c:4073
  do_sys_openat2+0x121/0x1c0 fs/open.c:1435
  do_sys_open fs/open.c:1450 [inline]
  __do_sys_openat fs/open.c:1466 [inline]
  __se_sys_openat fs/open.c:1461 [inline]
  __x64_sys_openat+0x138/0x170 fs/open.c:1461
  do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
  do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
  entry_SYSCALL_64_after_hwframe+0x77/0x7f

to a SOFTIRQ-irq-unsafe lock:
 (tasklist_lock){.+.+}-{3:3}

... which became SOFTIRQ-irq-unsafe at:
...
  lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
  __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline]
  _raw_read_lock+0x36/0x50 kernel/locking/spinlock.c:228
  __do_wait+0xde/0x740 kernel/exit.c:1662
  do_wait+0x1f8/0x520 kernel/exit.c:1706
  kernel_wait+0xab/0x170 kernel/exit.c:1882
  call_usermodehelper_exec_sync kernel/umh.c:136 [inline]
  call_usermodehelper_exec_work+0xbe/0x230 kernel/umh.c:163
  process_one_work kernel/workqueue.c:3236 [inline]
  process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3319
  worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
  kthread+0x70e/0x8a0 kernel/kthread.c:463
  ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148
  ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

other info that might help us debug this:

Chain exists of:
  &client->buffer_lock --> &f_owner->lock --> tasklist_lock

 Possible interrupt unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(tasklist_lock);
                               local_irq_disable();
                               lock(&client->buffer_lock);
                               lock(&f_owner->lock);
  <Interrupt>
    lock(&client->buffer_lock);

 *** DEADLOCK ***

6 locks held by syz.5.5572/1099:
 #0: ffff888053b50428 (sb_writers#5){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:557
 #1: ffffffff8e2a9bf0 (file_rwsem){++++}-{0:0}, at: __break_lease+0x37f/0x1620 fs/locks.c:1563
 #2: ffff88802e9edd28 (&ctx->flc_lock){+.+.}-{3:3}, at: spin_lock include/linux/spinlock.h:351 [inline]
 #2: ffff88802e9edd28 (&ctx->flc_lock){+.+.}-{3:3}, at: __break_lease+0x387/0x1620 fs/locks.c:1564
 #3: ffffffff8e139ee0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
 #3: ffffffff8e139ee0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
 #3: ffffffff8e139ee0 (rcu_read_lock){....}-{1:3}, at: kill_fasync+0x53/0x4d0 fs/fcntl.c:1147
 #4: ffff888028749750 (&new->fa_lock){....}-{3:3}, at: kill_fasync_rcu fs/fcntl.c:1124 [inline]
 #4: ffff888028749750 (&new->fa_lock){....}-{3:3}, at: kill_fasync+0x199/0x4d0 fs/fcntl.c:1148
 #5: ffff88807dfb19a0 (&f_owner->lock){....}-{3:3}, at: send_sigio+0x38/0x370 fs/fcntl.c:907

the dependencies between SOFTIRQ-irq-safe lock and the holding lock:
  -> (&client->buffer_lock){..-.}-{3:3} {
     IN-SOFTIRQ-W at:
                        lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
                        __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
                        _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
                        spin_lock include/linux/spinlock.h:351 [inline]
                        evdev_pass_values+0xb9/0xbd0 drivers/input/evdev.c:261
                        evdev_events+0x1e6/0x340 drivers/input/evdev.c:306
                        input_pass_values+0x285/0x890 drivers/input/input.c:127
                        input_event_dispose+0x3e5/0x6b0 drivers/input/input.c:352
                        input_event+0x89/0xe0 drivers/input/input.c:395
                        hidinput_hid_event+0x132c/0x1c90 drivers/hid/hid-input.c:1716
                        hid_process_event+0x4be/0x620 drivers/hid/hid-core.c:1556
                        hid_process_report drivers/hid/hid-core.c:1704 [inline]
                        hid_report_raw_event+0xe91/0x16d0 drivers/hid/hid-core.c:2065
                        __hid_input_report drivers/hid/hid-core.c:2135 [inline]
                        hid_input_report+0x43e/0x520 drivers/hid/hid-core.c:2157
                        hid_irq_in+0x47e/0x6d0 drivers/hid/usbhid/hid-core.c:286
                        __usb_hcd_giveback_urb+0x41a/0x690 drivers/usb/core/hcd.c:1663
                        dummy_timer+0x862/0x4550 drivers/usb/gadget/udc/dummy_hcd.c:1995
                        __run_hrtimer kernel/time/hrtimer.c:1761 [inline]
                        __hrtimer_run_queues+0x52c/0xc60 kernel/time/hrtimer.c:1825
                        hrtimer_run_softirq+0x187/0x2b0 kernel/time/hrtimer.c:1842
                        handle_softirqs+0x283/0x870 kernel/softirq.c:579
                        __do_softirq kernel/softirq.c:613 [inline]
                        invoke_softirq kernel/softirq.c:453 [inline]
                        __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
                        irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
                        instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
                        sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050
                        asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
                        native_irq_enable arch/x86/include/asm/irqflags.h:42 [inline]
                        arch_local_irq_enable arch/x86/include/asm/irqflags.h:119 [inline]
                        raw_spin_rq_unlock_irq kernel/sched/sched.h:1531 [inline]
                        finish_lock_switch kernel/sched/core.c:5105 [inline]
                        finish_task_switch+0x26b/0x950 kernel/sched/core.c:5223
                        context_switch kernel/sched/core.c:5360 [inline]
                        __schedule+0x17a0/0x4cc0 kernel/sched/core.c:6961
                        preempt_schedule_notrace+0xd1/0x110 kernel/sched/core.c:7238
                        preempt_schedule_notrace_thunk+0x16/0x30 arch/x86/entry/thunk.S:13
                        rcu_is_watching+0x7f/0xb0 kernel/rcu/tree.c:752
                        trace_lock_acquire include/trace/events/lock.h:24 [inline]
                        lock_acquire+0x5f/0x360 kernel/locking/lockdep.c:5831
                        down_write+0x96/0x1f0 kernel/locking/rwsem.c:1590
                        inode_lock include/linux/fs.h:869 [inline]
                        process_measurement+0x3d8/0x1a40 security/integrity/ima/ima_main.c:280
                        ima_file_check+0xd7/0x120 security/integrity/ima/ima_main.c:633
                        security_file_post_open+0xbb/0x290 security/security.c:3160
                        do_open fs/namei.c:3889 [inline]
                        path_openat+0x2f26/0x3830 fs/namei.c:4046
                        do_filp_open+0x1fa/0x410 fs/namei.c:4073
                        do_sys_openat2+0x121/0x1c0 fs/open.c:1435
                        do_sys_open fs/open.c:1450 [inline]
                        __do_sys_openat fs/open.c:1466 [inline]
                        __se_sys_openat fs/open.c:1461 [inline]
                        __x64_sys_openat+0x138/0x170 fs/open.c:1461
                        do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
                        do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
                        entry_SYSCALL_64_after_hwframe+0x77/0x7f
     INITIAL USE at:
                       lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
                       __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
                       _raw_spin_lock_irqsave+0xa7/0xf0 kernel/locking/spinlock.c:162
                       evdev_set_mask drivers/input/evdev.c:978 [inline]
                       evdev_do_ioctl drivers/input/evdev.c:1115 [inline]
                       evdev_ioctl_handler+0x1969/0x1f10 drivers/input/evdev.c:1270
                       vfs_ioctl fs/ioctl.c:51 [inline]
                       __do_sys_ioctl fs/ioctl.c:598 [inline]
                       __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:584
                       do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
                       do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
                       entry_SYSCALL_64_after_hwframe+0x77/0x7f
   }
   ... key      at: [<ffffffff99e2a1a0>] evdev_open.__key.25+0x0/0x20
 -> (&new->fa_lock){....}-{3:3} {
    INITIAL USE at:
                     lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
                     __raw_write_lock_irq include/linux/rwlock_api_smp.h:195 [inline]
                     _raw_write_lock_irq+0xa2/0xf0 kernel/locking/spinlock.c:326
                     fasync_remove_entry+0xf1/0x1c0 fs/fcntl.c:1001
                     lease_modify+0x1ca/0x3c0 fs/locks.c:1455
                     locks_remove_lease fs/locks.c:2675 [inline]
                     locks_remove_file+0x4bf/0xea0 fs/locks.c:2700
                     __fput+0x3ab/0xa70 fs/file_table.c:460
                     fput_close_sync+0x119/0x200 fs/file_table.c:573
                     __do_sys_close fs/open.c:1587 [inline]
                     __se_sys_close fs/open.c:1572 [inline]
                     __x64_sys_close+0x7f/0x110 fs/open.c:1572
                     do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
                     do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
                     entry_SYSCALL_64_after_hwframe+0x77/0x7f
    INITIAL READ USE at:
                          lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
                          __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline]
                          _raw_read_lock_irqsave+0xaf/0x100 kernel/locking/spinlock.c:236
                          kill_fasync_rcu fs/fcntl.c:1124 [inline]
                          kill_fasync+0x199/0x4d0 fs/fcntl.c:1148
                          lease_break_callback+0x26/0x30 fs/locks.c:558
                          __break_lease+0x6a2/0x1620 fs/locks.c:1592
                          break_lease include/linux/filelock.h:446 [inline]
                          do_dentry_open+0x8b7/0x13f0 fs/open.c:956
                          vfs_open+0x3b/0x340 fs/open.c:1095
                          do_open fs/namei.c:3887 [inline]
                          path_openat+0x2ee5/0x3830 fs/namei.c:4046
                          do_filp_open+0x1fa/0x410 fs/namei.c:4073
                          do_sys_openat2+0x121/0x1c0 fs/open.c:1435
                          do_sys_open fs/open.c:1450 [inline]
                          __do_sys_open fs/open.c:1458 [inline]
                          __se_sys_open fs/open.c:1454 [inline]
                          __x64_sys_open+0x11e/0x150 fs/open.c:1454
                          do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
                          do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
                          entry_SYSCALL_64_after_hwframe+0x77/0x7f
  }
  ... key      at: [<ffffffff99b2af80>] fasync_insert_entry.__key+0x0/0x20
  ... acquired at:
   lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
   __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline]
   _raw_read_lock_irqsave+0xaf/0x100 kernel/locking/spinlock.c:236
   kill_fasync_rcu fs/fcntl.c:1124 [inline]
   kill_fasync+0x199/0x4d0 fs/fcntl.c:1148
   __pass_event drivers/input/evdev.c:240 [inline]
   evdev_pass_values+0x627/0xbd0 drivers/input/evdev.c:278
   evdev_events+0x1e6/0x340 drivers/input/evdev.c:306
   input_pass_values+0x285/0x890 drivers/input/input.c:127
   input_event_dispose+0x330/0x6b0 drivers/input/input.c:341
   input_inject_event+0x1dd/0x340 drivers/input/input.c:423
   evdev_write+0x2fc/0x480 drivers/input/evdev.c:528
   vfs_write+0x27b/0xb30 fs/read_write.c:684
   ksys_write+0x145/0x250 fs/read_write.c:738
   do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
   do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
   entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> (&f_owner->lock){....}-{3:3} {
   INITIAL USE at:
                   lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
                   __raw_write_lock_irq include/linux/rwlock_api_smp.h:195 [inline]
                   _raw_write_lock_irq+0xa2/0xf0 kernel/locking/spinlock.c:326
                   __f_setown+0x67/0x370 fs/fcntl.c:136
                   generic_add_lease fs/locks.c:1874 [inline]
                   generic_setlease+0xd60/0x1240 fs/locks.c:1942
                   do_fcntl_add_lease fs/locks.c:2047 [inline]
                   fcntl_setlease+0x3a2/0x4c0 fs/locks.c:2069
                   do_fcntl+0x6a9/0x1910 fs/fcntl.c:536
                   __do_sys_fcntl fs/fcntl.c:591 [inline]
                   __se_sys_fcntl+0xc8/0x150 fs/fcntl.c:576
                   do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
                   do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
                   entry_SYSCALL_64_after_hwframe+0x77/0x7f
   INITIAL READ USE at:
                        lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
                        __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline]
                        _raw_read_lock_irqsave+0xaf/0x100 kernel/locking/spinlock.c:236
                        send_sigio+0x38/0x370 fs/fcntl.c:907
                        kill_fasync_rcu fs/fcntl.c:1133 [inline]
                        kill_fasync+0x24d/0x4d0 fs/fcntl.c:1148
                        lease_break_callback+0x26/0x30 fs/locks.c:558
                        __break_lease+0x6a2/0x1620 fs/locks.c:1592
                        break_lease include/linux/filelock.h:446 [inline]
                        do_dentry_open+0x8b7/0x13f0 fs/open.c:956
                        vfs_open+0x3b/0x340 fs/open.c:1095
                        do_open fs/namei.c:3887 [inline]
                        path_openat+0x2ee5/0x3830 fs/namei.c:4046
                        do_filp_open+0x1fa/0x410 fs/namei.c:4073
                        do_sys_openat2+0x121/0x1c0 fs/open.c:1435
                        do_sys_open fs/open.c:1450 [inline]
                        __do_sys_open fs/open.c:1458 [inline]
                        __se_sys_open fs/open.c:1454 [inline]
                        __x64_sys_open+0x11e/0x150 fs/open.c:1454
                        do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
                        do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
                        entry_SYSCALL_64_after_hwframe+0x77/0x7f
 }
 ... key      at: [<ffffffff99b2af60>] file_f_owner_allocate.__key+0x0/0x20
 ... acquired at:
   lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
   __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline]
   _raw_read_lock_irqsave+0xaf/0x100 kernel/locking/spinlock.c:236
   send_sigio+0x38/0x370 fs/fcntl.c:907
   kill_fasync_rcu fs/fcntl.c:1133 [inline]
   kill_fasync+0x24d/0x4d0 fs/fcntl.c:1148
   lease_break_callback+0x26/0x30 fs/locks.c:558
   __break_lease+0x6a2/0x1620 fs/locks.c:1592
   break_lease include/linux/filelock.h:446 [inline]
   do_dentry_open+0x8b7/0x13f0 fs/open.c:956
   vfs_open+0x3b/0x340 fs/open.c:1095
   do_open fs/namei.c:3887 [inline]
   path_openat+0x2ee5/0x3830 fs/namei.c:4046
   do_filp_open+0x1fa/0x410 fs/namei.c:4073
   do_sys_openat2+0x121/0x1c0 fs/open.c:1435
   do_sys_open fs/open.c:1450 [inline]
   __do_sys_open fs/open.c:1458 [inline]
   __se_sys_open fs/open.c:1454 [inline]
   __x64_sys_open+0x11e/0x150 fs/open.c:1454
   do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
   do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
   entry_SYSCALL_64_after_hwframe+0x77/0x7f


the dependencies between the lock to be acquired
 and SOFTIRQ-irq-unsafe lock:
-> (tasklist_lock){.+.+}-{3:3} {
   HARDIRQ-ON-R at:
                    lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
                    __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline]
                    _raw_read_lock+0x36/0x50 kernel/locking/spinlock.c:228
                    __do_wait+0xde/0x740 kernel/exit.c:1662
                    do_wait+0x1f8/0x520 kernel/exit.c:1706
                    kernel_wait+0xab/0x170 kernel/exit.c:1882
                    call_usermodehelper_exec_sync kernel/umh.c:136 [inline]
                    call_usermodehelper_exec_work+0xbe/0x230 kernel/umh.c:163
                    process_one_work kernel/workqueue.c:3236 [inline]
                    process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3319
                    worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
                    kthread+0x70e/0x8a0 kernel/kthread.c:463
                    ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148
                    ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
   SOFTIRQ-ON-R at:
                    lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
                    __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline]
                    _raw_read_lock+0x36/0x50 kernel/locking/spinlock.c:228
                    __do_wait+0xde/0x740 kernel/exit.c:1662
                    do_wait+0x1f8/0x520 kernel/exit.c:1706
                    kernel_wait+0xab/0x170 kernel/exit.c:1882
                    call_usermodehelper_exec_sync kernel/umh.c:136 [inline]
                    call_usermodehelper_exec_work+0xbe/0x230 kernel/umh.c:163
                    process_one_work kernel/workqueue.c:3236 [inline]
                    process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3319
                    worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
                    kthread+0x70e/0x8a0 kernel/kthread.c:463
                    ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148
                    ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
   INITIAL USE at:
                   lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
                   __raw_write_lock_irq include/linux/rwlock_api_smp.h:195 [inline]
                   _raw_write_lock_irq+0xa2/0xf0 kernel/locking/spinlock.c:326
                   copy_process+0x224f/0x3c00 kernel/fork.c:2321
                   kernel_clone+0x21e/0x840 kernel/fork.c:2605
                   user_mode_thread+0xdd/0x140 kernel/fork.c:2683
                   rest_init+0x23/0x300 init/main.c:709
                   start_kernel+0x3a9/0x410 init/main.c:1097
                   x86_64_start_reservations+0x24/0x30 arch/x86/kernel/head64.c:307
                   x86_64_start_kernel+0x143/0x1c0 arch/x86/kernel/head64.c:288
                   common_startup_64+0x13e/0x147
   INITIAL READ USE at:
                        lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
                        __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline]
                        _raw_read_lock+0x36/0x50 kernel/locking/spinlock.c:228
                        __do_wait+0xde/0x740 kernel/exit.c:1662
                        do_wait+0x1f8/0x520 kernel/exit.c:1706
                        kernel_wait+0xab/0x170 kernel/exit.c:1882
                        call_usermodehelper_exec_sync kernel/umh.c:136 [inline]
                        call_usermodehelper_exec_work+0xbe/0x230 kernel/umh.c:163
                        process_one_work kernel/workqueue.c:3236 [inline]
                        process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3319
                        worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
                        kthread+0x70e/0x8a0 kernel/kthread.c:463
                        ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148
                        ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 }
 ... key      at: [<ffffffff8de0c058>] tasklist_lock+0x18/0x40
 ... acquired at:
   lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
   __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline]
   _raw_read_lock+0x36/0x50 kernel/locking/spinlock.c:228
   send_sigio+0x101/0x370 fs/fcntl.c:921
   kill_fasync_rcu fs/fcntl.c:1133 [inline]
   kill_fasync+0x24d/0x4d0 fs/fcntl.c:1148
   lease_break_callback+0x26/0x30 fs/locks.c:558
   __break_lease+0x6a2/0x1620 fs/locks.c:1592
   vfs_truncate+0x428/0x520 fs/open.c:112
   do_sys_truncate+0xdb/0x190 fs/open.c:141
   __do_sys_truncate fs/open.c:153 [inline]
   __se_sys_truncate fs/open.c:151 [inline]
   __x64_sys_truncate+0x5b/0x70 fs/open.c:151
   do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
   do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
   entry_SYSCALL_64_after_hwframe+0x77/0x7f


stack backtrace:
CPU: 1 UID: 0 PID: 1099 Comm: syz.5.5572 Not tainted 6.17.0-rc1-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 print_bad_irq_dependency kernel/locking/lockdep.c:2616 [inline]
 check_irq_usage kernel/locking/lockdep.c:2857 [inline]
 check_prev_add kernel/locking/lockdep.c:3169 [inline]
 check_prevs_add kernel/locking/lockdep.c:3284 [inline]
 validate_chain+0x1f05/0x2140 kernel/locking/lockdep.c:3908
 __lock_acquire+0xab9/0xd20 kernel/locking/lockdep.c:5237
 lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline]
 _raw_read_lock+0x36/0x50 kernel/locking/spinlock.c:228
 send_sigio+0x101/0x370 fs/fcntl.c:921
 kill_fasync_rcu fs/fcntl.c:1133 [inline]
 kill_fasync+0x24d/0x4d0 fs/fcntl.c:1148
 lease_break_callback+0x26/0x30 fs/locks.c:558
 __break_lease+0x6a2/0x1620 fs/locks.c:1592
 vfs_truncate+0x428/0x520 fs/open.c:112
 do_sys_truncate+0xdb/0x190 fs/open.c:141
 __do_sys_truncate fs/open.c:153 [inline]
 __se_sys_truncate fs/open.c:151 [inline]
 __x64_sys_truncate+0x5b/0x70 fs/open.c:151
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5c16b8ebe9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5c179a4038 EFLAGS: 00000246 ORIG_RAX: 000000000000004c
RAX: ffffffffffffffda RBX: 00007f5c16db6090 RCX: 00007f5c16b8ebe9
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 0000200000000140
RBP: 00007f5c16c11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5c16db6128 R14: 00007f5c16db6090 R15: 00007f5c16edfa28
 </TASK>