Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.89' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 73.590365][ T8461] [ 73.592813][ T8461] ===================================================== [ 73.592823][ T8461] WARNING: HARDIRQ-safe -> HARDIRQ-unsafe lock order detected [ 73.592835][ T8461] 5.13.0-rc7-syzkaller #0 Not tainted [ 73.592844][ T8461] ----------------------------------------------------- [ 73.592851][ T8461] syz-executor095/8461 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire: [ 73.592876][ T8461] ffff8880227a1038 (&f->f_owner.lock){.+.+}-{2:2}, at: send_sigio+0x24/0x370 [ 73.592947][ T8461] [ 73.592947][ T8461] and this task is already holding: [ 73.592952][ T8461] ffff888029beb018 (&new->fa_lock){....}-{2:2}, at: kill_fasync+0x14b/0x460 [ 73.592998][ T8461] which would create a new lock dependency: [ 73.593004][ T8461] (&new->fa_lock){....}-{2:2} -> (&f->f_owner.lock){.+.+}-{2:2} [ 73.593050][ T8461] [ 73.593050][ T8461] but this new dependency connects a HARDIRQ-irq-safe lock: [ 73.593058][ T8461] (&dev->event_lock){-...}-{2:2} [ 73.676951][ T8461] [ 73.676951][ T8461] ... which became HARDIRQ-irq-safe at: [ 73.676964][ T8461] lock_acquire+0x1ab/0x740 [ 73.676996][ T8461] _raw_spin_lock_irqsave+0x39/0x50 [ 73.677029][ T8461] input_event+0x7b/0xb0 [ 73.677046][ T8461] psmouse_report_standard_buttons+0x2c/0x80 [ 73.677071][ T8461] psmouse_process_byte+0x1e1/0x890 [ 73.677100][ T8461] psmouse_handle_byte+0x41/0x1b0 [ 73.677121][ T8461] psmouse_interrupt+0x304/0xf00 [ 73.677142][ T8461] serio_interrupt+0x88/0x150 [ 73.677162][ T8461] i8042_interrupt+0x27a/0x520 [ 73.677182][ T8461] __handle_irq_event_percpu+0x303/0x8f0 [ 73.677202][ T8461] handle_irq_event+0x102/0x290 [ 73.677221][ T8461] handle_edge_irq+0x25f/0xd00 [ 73.677241][ T8461] __common_interrupt+0x9e/0x200 [ 73.757550][ T8461] common_interrupt+0x9f/0xd0 [ 73.757590][ T8461] asm_common_interrupt+0x1e/0x40 [ 73.757610][ T8461] _raw_spin_unlock_irqrestore+0x38/0x70 [ 73.757629][ T8461] i8042_command+0x12e/0x150 [ 73.757651][ T8461] i8042_aux_write+0xd7/0x120 [ 73.757672][ T8461] ps2_do_sendbyte+0x2cf/0x720 [ 73.757727][ T8461] ps2_sendbyte+0x58/0x150 [ 73.757748][ T8461] cypress_ps2_sendbyte+0x2e/0x160 [ 73.757771][ T8461] cypress_send_ext_cmd+0x1d0/0x8e0 [ 73.804221][ T8461] cypress_detect+0x75/0x190 [ 73.804252][ T8461] psmouse_try_protocol+0x211/0x370 [ 73.804274][ T8461] psmouse_extensions+0x557/0x930 [ 73.804295][ T8461] psmouse_switch_protocol+0x52a/0x740 [ 73.804315][ T8461] psmouse_connect+0x5e9/0xfd0 [ 73.804334][ T8461] serio_driver_probe+0x72/0xa0 [ 73.804355][ T8461] really_probe+0x291/0xf60 [ 73.804374][ T8461] driver_probe_device+0x298/0x410 [ 73.804393][ T8461] device_driver_attach+0x228/0x290 [ 73.804412][ T8461] __driver_attach+0x190/0x340 [ 73.804430][ T8461] bus_for_each_dev+0x147/0x1d0 [ 73.804447][ T8461] serio_handle_event+0x5f6/0xa30 [ 73.804467][ T8461] process_one_work+0x98d/0x1600 [ 73.804490][ T8461] worker_thread+0x64c/0x1120 [ 73.804510][ T8461] kthread+0x3b1/0x4a0 [ 73.804527][ T8461] ret_from_fork+0x1f/0x30 [ 73.887085][ T8461] [ 73.887085][ T8461] to a HARDIRQ-irq-unsafe lock: [ 73.887098][ T8461] (&f->f_owner.lock){.+.+}-{2:2} [ 73.887123][ T8461] [ 73.887123][ T8461] ... which became HARDIRQ-irq-unsafe at: [ 73.887130][ T8461] ... [ 73.887133][ T8461] lock_acquire+0x1ab/0x740 [ 73.887161][ T8461] _raw_read_lock+0x5b/0x70 [ 73.887179][ T8461] do_fcntl+0x8b4/0x1200 [ 73.887202][ T8461] __x64_sys_fcntl+0x165/0x1e0 [ 73.887219][ T8461] do_syscall_64+0x3a/0xb0 [ 73.887240][ T8461] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 73.887260][ T8461] [ 73.887260][ T8461] other info that might help us debug this: [ 73.887260][ T8461] [ 73.887266][ T8461] Chain exists of: [ 73.887266][ T8461] &dev->event_lock --> &new->fa_lock --> &f->f_owner.lock [ 73.887266][ T8461] [ 73.950494][ T8461] Possible interrupt unsafe locking scenario: [ 73.950494][ T8461] [ 73.950501][ T8461] CPU0 CPU1 [ 73.950505][ T8461] ---- ---- [ 73.950509][ T8461] lock(&f->f_owner.lock); [ 73.950520][ T8461] local_irq_disable(); [ 73.950525][ T8461] lock(&dev->event_lock); [ 73.950537][ T8461] lock(&new->fa_lock); [ 73.950550][ T8461] [ 73.950554][ T8461] lock(&dev->event_lock); [ 73.950566][ T8461] [ 73.950566][ T8461] *** DEADLOCK *** [ 73.950566][ T8461] [ 73.950571][ T8461] 8 locks held by syz-executor095/8461: [ 73.950586][ T8461] #0: ffff8880223d1110 (&evdev->mutex){+.+.}-{3:3}, at: evdev_write+0x1d3/0x760 [ 73.950653][ T8461] #1: ffff888146b7a230 (&dev->event_lock){-...}-{2:2}, at: input_inject_event+0xa6/0x310 [ 73.950705][ T8461] #2: ffffffff8bf79660 (rcu_read_lock){....}-{1:2}, at: input_inject_event+0x92/0x310 [ 73.950757][ T8461] #3: ffffffff8bf79660 (rcu_read_lock){....}-{1:2}, at: input_pass_values.part.0+0x0/0x700 [ 74.060576][ T8461] #4: ffffffff8bf79660 (rcu_read_lock){....}-{1:2}, at: evdev_events+0x59/0x3f0 [ 74.060627][ T8461] #5: ffff888028741028 (&client->buffer_lock){....}-{2:2}, at: evdev_pass_values.part.0+0xf6/0x970 [ 74.060685][ T8461] #6: ffffffff8bf79660 (rcu_read_lock){....}-{1:2}, at: kill_fasync+0x3d/0x460 [ 74.091782][ T8461] #7: ffff888029beb018 (&new->fa_lock){....}-{2:2}, at: kill_fasync+0x14b/0x460 [ 74.091829][ T8461] [ 74.091829][ T8461] the dependencies between HARDIRQ-irq-safe lock and the holding lock: [ 74.091860][ T8461] -> (&dev->event_lock){-...}-{2:2} { [ 74.091895][ T8461] IN-HARDIRQ-W at: [ 74.091907][ T8461] lock_acquire+0x1ab/0x740 [ 74.091933][ T8461] _raw_spin_lock_irqsave+0x39/0x50 [ 74.091956][ T8461] input_event+0x7b/0xb0 [ 74.091975][ T8461] psmouse_report_standard_buttons+0x2c/0x80 [ 74.092003][ T8461] psmouse_process_byte+0x1e1/0x890 [ 74.092028][ T8461] psmouse_handle_byte+0x41/0x1b0 [ 74.092052][ T8461] psmouse_interrupt+0x304/0xf00 [ 74.180272][ T8461] serio_interrupt+0x88/0x150 [ 74.180304][ T8461] i8042_interrupt+0x27a/0x520 [ 74.180322][ T8461] __handle_irq_event_percpu+0x303/0x8f0 [ 74.180342][ T8461] handle_irq_event+0x102/0x290 [ 74.180361][ T8461] handle_edge_irq+0x25f/0xd00 [ 74.180382][ T8461] __common_interrupt+0x9e/0x200 [ 74.180405][ T8461] common_interrupt+0x9f/0xd0 [ 74.180429][ T8461] asm_common_interrupt+0x1e/0x40 [ 74.180451][ T8461] _raw_spin_unlock_irqrestore+0x38/0x70 [ 74.244150][ T8461] i8042_command+0x12e/0x150 [ 74.250840][ T8461] i8042_aux_write+0xd7/0x120 [ 74.257846][ T8461] ps2_do_sendbyte+0x2cf/0x720 [ 74.264788][ T8461] ps2_sendbyte+0x58/0x150 [ 74.271191][ T8461] cypress_ps2_sendbyte+0x2e/0x160 [ 74.278288][ T8461] cypress_send_ext_cmd+0x1d0/0x8e0 [ 74.285581][ T8461] cypress_detect+0x75/0x190 [ 74.292160][ T8461] psmouse_try_protocol+0x211/0x370 [ 74.299981][ T8461] psmouse_extensions+0x557/0x930 [ 74.307169][ T8461] psmouse_switch_protocol+0x52a/0x740 [ 74.314708][ T8461] psmouse_connect+0x5e9/0xfd0 [ 74.321769][ T8461] serio_driver_probe+0x72/0xa0 [ 74.328762][ T8461] really_probe+0x291/0xf60 [ 74.335272][ T8461] driver_probe_device+0x298/0x410 [ 74.342547][ T8461] device_driver_attach+0x228/0x290 [ 74.349866][ T8461] __driver_attach+0x190/0x340 [ 74.356623][ T8461] bus_for_each_dev+0x147/0x1d0 [ 74.363564][ T8461] serio_handle_event+0x5f6/0xa30 [ 74.370581][ T8461] process_one_work+0x98d/0x1600 [ 74.377711][ T8461] worker_thread+0x64c/0x1120 [ 74.384529][ T8461] kthread+0x3b1/0x4a0 [ 74.390788][ T8461] ret_from_fork+0x1f/0x30 [ 74.397372][ T8461] INITIAL USE at: [ 74.401425][ T8461] lock_acquire+0x1ab/0x740 [ 74.407933][ T8461] _raw_spin_lock_irqsave+0x39/0x50 [ 74.415263][ T8461] input_inject_event+0xa6/0x310 [ 74.422122][ T8461] led_set_brightness_nosleep+0xe6/0x1a0 [ 74.429758][ T8461] led_set_brightness+0x134/0x170 [ 74.436876][ T8461] led_trigger_event+0x75/0xd0 [ 74.443556][ T8461] kbd_led_trigger_activate+0xc9/0x100 [ 74.451034][ T8461] led_trigger_set+0x61e/0xbd0 [ 74.457834][ T8461] led_trigger_set_default+0x1a6/0x230 [ 74.465702][ T8461] led_classdev_register_ext+0x5b1/0x7c0 [ 74.473522][ T8461] input_leds_connect+0x4bd/0x860 [ 74.480627][ T8461] input_attach_handler+0x180/0x1f0 [ 74.488266][ T8461] input_register_device.cold+0xf0/0x307 [ 74.496032][ T8461] atkbd_connect+0x739/0xa10 [ 74.502543][ T8461] serio_driver_probe+0x72/0xa0 [ 74.509468][ T8461] really_probe+0x291/0xf60 [ 74.515999][ T8461] driver_probe_device+0x298/0x410 [ 74.523024][ T8461] device_driver_attach+0x228/0x290 [ 74.530987][ T8461] __driver_attach+0x190/0x340 [ 74.537668][ T8461] bus_for_each_dev+0x147/0x1d0 [ 74.544587][ T8461] serio_handle_event+0x5f6/0xa30 [ 74.551718][ T8461] process_one_work+0x98d/0x1600 [ 74.558771][ T8461] worker_thread+0x64c/0x1120 [ 74.565583][ T8461] kthread+0x3b1/0x4a0 [ 74.572312][ T8461] ret_from_fork+0x1f/0x30 [ 74.579647][ T8461] } [ 74.582330][ T8461] ... key at: [] __key.8+0x0/0x40 [ 74.589907][ T8461] ... acquired at: [ 74.594023][ T8461] _raw_spin_lock+0x2a/0x40 [ 74.599084][ T8461] evdev_pass_values.part.0+0xf6/0x970 [ 74.605236][ T8461] evdev_events+0x28b/0x3f0 [ 74.610041][ T8461] input_to_handler+0x2a0/0x4c0 [ 74.616381][ T8461] input_pass_values.part.0+0x284/0x700 [ 74.622373][ T8461] input_handle_event+0x373/0x1440 [ 74.627769][ T8461] input_inject_event+0x2f5/0x310 [ 74.633045][ T8461] evdev_write+0x430/0x760 [ 74.637712][ T8461] vfs_write+0x28e/0xa30 [ 74.642143][ T8461] ksys_write+0x1ee/0x250 [ 74.646634][ T8461] do_syscall_64+0x3a/0xb0 [ 74.651218][ T8461] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 74.657279][ T8461] [ 74.659695][ T8461] -> (&client->buffer_lock){....}-{2:2} { [ 74.665656][ T8461] INITIAL USE at: [ 74.669803][ T8461] lock_acquire+0x1ab/0x740 [ 74.676044][ T8461] _raw_spin_lock+0x2a/0x40 [ 74.682279][ T8461] evdev_pass_values.part.0+0xf6/0x970 [ 74.689664][ T8461] evdev_events+0x28b/0x3f0 [ 74.695904][ T8461] input_to_handler+0x2a0/0x4c0 [ 74.702488][ T8461] input_pass_values.part.0+0x284/0x700 [ 74.709924][ T8461] input_handle_event+0x373/0x1440 [ 74.717023][ T8461] input_inject_event+0x2f5/0x310 [ 74.723904][ T8461] evdev_write+0x430/0x760 [ 74.730067][ T8461] vfs_write+0x28e/0xa30 [ 74.736308][ T8461] ksys_write+0x1ee/0x250 [ 74.742496][ T8461] do_syscall_64+0x3a/0xb0 [ 74.748660][ T8461] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 74.756805][ T8461] } [ 74.759383][ T8461] ... key at: [] __key.4+0x0/0x40 [ 74.766767][ T8461] ... acquired at: [ 74.770730][ T8461] _raw_read_lock+0x5b/0x70 [ 74.775485][ T8461] kill_fasync+0x14b/0x460 [ 74.780150][ T8461] evdev_pass_values.part.0+0x64e/0x970 [ 74.785958][ T8461] evdev_events+0x28b/0x3f0 [ 74.790793][ T8461] input_to_handler+0x2a0/0x4c0 [ 74.796216][ T8461] input_pass_values.part.0+0x284/0x700 [ 74.801950][ T8461] input_handle_event+0x373/0x1440 [ 74.807223][ T8461] input_inject_event+0x2f5/0x310 [ 74.812521][ T8461] evdev_write+0x430/0x760 [ 74.817349][ T8461] vfs_write+0x28e/0xa30 [ 74.822295][ T8461] ksys_write+0x1ee/0x250 [ 74.826879][ T8461] do_syscall_64+0x3a/0xb0 [ 74.831456][ T8461] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 74.837527][ T8461] [ 74.839934][ T8461] -> (&new->fa_lock){....}-{2:2} { [ 74.845134][ T8461] INITIAL READ USE at: [ 74.849443][ T8461] lock_acquire+0x1ab/0x740 [ 74.856321][ T8461] _raw_read_lock+0x5b/0x70 [ 74.862857][ T8461] kill_fasync+0x14b/0x460 [ 74.869406][ T8461] evdev_pass_values.part.0+0x64e/0x970 [ 74.877123][ T8461] evdev_events+0x28b/0x3f0 [ 74.883634][ T8461] input_to_handler+0x2a0/0x4c0 [ 74.890472][ T8461] input_pass_values.part.0+0x284/0x700 [ 74.898011][ T8461] input_handle_event+0x373/0x1440 [ 74.905397][ T8461] input_inject_event+0x2f5/0x310 [ 74.912493][ T8461] evdev_write+0x430/0x760 [ 74.919021][ T8461] vfs_write+0x28e/0xa30 [ 74.925256][ T8461] ksys_write+0x1ee/0x250 [ 74.931576][ T8461] do_syscall_64+0x3a/0xb0 [ 74.937982][ T8461] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 74.946155][ T8461] } [ 74.948706][ T8461] ... key at: [] __key.0+0x0/0x40 [ 74.955894][ T8461] ... acquired at: [ 74.959683][ T8461] lock_acquire+0x1ab/0x740 [ 74.964352][ T8461] _raw_read_lock_irqsave+0x70/0x90 [ 74.969711][ T8461] send_sigio+0x24/0x370 [ 74.974117][ T8461] kill_fasync+0x205/0x460 [ 74.978707][ T8461] evdev_pass_values.part.0+0x64e/0x970 [ 74.984517][ T8461] evdev_events+0x28b/0x3f0 [ 74.989273][ T8461] input_to_handler+0x2a0/0x4c0 [ 74.994302][ T8461] input_pass_values.part.0+0x284/0x700 [ 75.000113][ T8461] input_handle_event+0x373/0x1440 [ 75.005849][ T8461] input_inject_event+0x2f5/0x310 [ 75.011431][ T8461] evdev_write+0x430/0x760 [ 75.016127][ T8461] vfs_write+0x28e/0xa30 [ 75.020727][ T8461] ksys_write+0x1ee/0x250 [ 75.025225][ T8461] do_syscall_64+0x3a/0xb0 [ 75.029959][ T8461] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 75.036173][ T8461] [ 75.038516][ T8461] [ 75.038516][ T8461] the dependencies between the lock to be acquired [ 75.038525][ T8461] and HARDIRQ-irq-unsafe lock: [ 75.053453][ T8461] -> (&f->f_owner.lock){.+.+}-{2:2} { [ 75.059449][ T8461] HARDIRQ-ON-R at: [ 75.063437][ T8461] lock_acquire+0x1ab/0x740 [ 75.069635][ T8461] _raw_read_lock+0x5b/0x70 [ 75.075888][ T8461] do_fcntl+0x8b4/0x1200 [ 75.083818][ T8461] __x64_sys_fcntl+0x165/0x1e0 [ 75.090796][ T8461] do_syscall_64+0x3a/0xb0 [ 75.097160][ T8461] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 75.105645][ T8461] SOFTIRQ-ON-R at: [ 75.110061][ T8461] lock_acquire+0x1ab/0x740 [ 75.116487][ T8461] _raw_read_lock+0x5b/0x70 [ 75.123522][ T8461] do_fcntl+0x8b4/0x1200 [ 75.129627][ T8461] __x64_sys_fcntl+0x165/0x1e0 [ 75.136703][ T8461] do_syscall_64+0x3a/0xb0 [ 75.143049][ T8461] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 75.151098][ T8461] INITIAL READ USE at: [ 75.155681][ T8461] lock_acquire+0x1ab/0x740 [ 75.162198][ T8461] _raw_read_lock+0x5b/0x70 [ 75.168997][ T8461] do_fcntl+0x8b4/0x1200 [ 75.175376][ T8461] __x64_sys_fcntl+0x165/0x1e0 [ 75.183302][ T8461] do_syscall_64+0x3a/0xb0 [ 75.190415][ T8461] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 75.199348][ T8461] } [ 75.201944][ T8461] ... key at: [] __key.5+0x0/0x40 [ 75.209349][ T8461] ... acquired at: [ 75.213144][ T8461] lock_acquire+0x1ab/0x740 [ 75.218025][ T8461] _raw_read_lock_irqsave+0x70/0x90 [ 75.223967][ T8461] send_sigio+0x24/0x370 [ 75.228837][ T8461] kill_fasync+0x205/0x460 [ 75.233705][ T8461] evdev_pass_values.part.0+0x64e/0x970 [ 75.240044][ T8461] evdev_events+0x28b/0x3f0 [ 75.244811][ T8461] input_to_handler+0x2a0/0x4c0 [ 75.250120][ T8461] input_pass_values.part.0+0x284/0x700 [ 75.256227][ T8461] input_handle_event+0x373/0x1440 [ 75.261790][ T8461] input_inject_event+0x2f5/0x310 [ 75.267168][ T8461] evdev_write+0x430/0x760 [ 75.272155][ T8461] vfs_write+0x28e/0xa30 [ 75.276657][ T8461] ksys_write+0x1ee/0x250 [ 75.281883][ T8461] do_syscall_64+0x3a/0xb0 [ 75.287537][ T8461] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 75.294119][ T8461] [ 75.296440][ T8461] [ 75.296440][ T8461] stack backtrace: [ 75.302520][ T8461] CPU: 0 PID: 8461 Comm: syz-executor095 Not tainted 5.13.0-rc7-syzkaller #0 [ 75.311823][ T8461] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 75.322014][ T8461] Call Trace: [ 75.325316][ T8461] dump_stack+0x141/0x1d7 [ 75.329670][ T8461] check_irq_usage.cold+0x4d6/0x6c5 [ 75.334878][ T8461] ? print_shortest_lock_dependencies+0x80/0x80 [ 75.341124][ T8461] ? kernel_text_address+0xbd/0xf0 [ 75.346699][ T8461] ? check_path.constprop.0+0x24/0x50 [ 75.352234][ T8461] ? stack_trace_save+0x8c/0xc0 [ 75.357725][ T8461] ? lockdep_lock+0xc6/0x200 [ 75.362346][ T8461] ? call_rcu_zapped+0xb0/0xb0 [ 75.367177][ T8461] __lock_acquire+0x2a2f/0x5230 [ 75.372049][ T8461] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 75.378060][ T8461] lock_acquire+0x1ab/0x740 [ 75.382559][ T8461] ? send_sigio+0x24/0x370 [ 75.386967][ T8461] ? lock_release+0x720/0x720 [ 75.391746][ T8461] ? lock_release+0x720/0x720 [ 75.396566][ T8461] ? lock_release+0x720/0x720 [ 75.401255][ T8461] _raw_read_lock_irqsave+0x70/0x90 [ 75.406453][ T8461] ? send_sigio+0x24/0x370 [ 75.410953][ T8461] send_sigio+0x24/0x370 [ 75.415203][ T8461] kill_fasync+0x205/0x460 [ 75.419620][ T8461] evdev_pass_values.part.0+0x64e/0x970 [ 75.425503][ T8461] ? evdev_release+0x410/0x410 [ 75.430307][ T8461] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 75.436141][ T8461] evdev_events+0x28b/0x3f0 [ 75.440873][ T8461] ? evdev_pass_values.part.0+0x970/0x970 [ 75.446700][ T8461] input_to_handler+0x2a0/0x4c0 [ 75.451548][ T8461] input_pass_values.part.0+0x284/0x700 [ 75.457308][ T8461] input_handle_event+0x373/0x1440 [ 75.462520][ T8461] input_inject_event+0x2f5/0x310 [ 75.467630][ T8461] evdev_write+0x430/0x760 [ 75.472039][ T8461] ? evdev_read+0xe40/0xe40 [ 75.476531][ T8461] ? security_file_permission+0x248/0x560 [ 75.482472][ T8461] ? evdev_read+0xe40/0xe40 [ 75.487084][ T8461] vfs_write+0x28e/0xa30 [ 75.491607][ T8461] ksys_write+0x1ee/0x250 [ 75.495999][ T8461] ? __ia32_sys_read+0xb0/0xb0 [ 75.500893][ T8461] ? syscall_enter_from_user_mode+0x27/0x70 [ 75.507326][ T8461] do_syscall_64+0x3a/0xb0 [ 75.512097][ T8461] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 75.518553][ T8461] RIP: 0033:0x443529 [ 75.522548][ T8461] Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 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 c0 ff ff ff f7 d8 64 89 01 48 [ 75.542144][ T8461] RSP: 002b:00007fff83362448 EFLAGS: 00000246 ORIG_RAX: 00