Warning: Permanently added '10.128.1.5' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 54.397536][ T8430] [ 54.400218][ T8430] ===================================================== [ 54.408843][ T8430] WARNING: HARDIRQ-safe -> HARDIRQ-unsafe lock order detected [ 54.408861][ T8430] 5.14.0-rc3-syzkaller #0 Not tainted [ 54.408869][ T8430] ----------------------------------------------------- [ 54.408873][ T8430] syz-executor840/8430 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire: [ 54.408890][ T8430] ffff8880216b7018 (&new->fa_lock){.+.+}-{2:2}, at: kill_fasync+0x13b/0x430 [ 54.408948][ T8430] [ 54.408948][ T8430] and this task is already holding: [ 54.408953][ T8430] ffff888028bd2028 (&client->buffer_lock){....}-{2:2}, at: evdev_pass_values+0xd9/0xaa0 [ 54.408987][ T8430] which would create a new lock dependency: [ 54.408992][ T8430] (&client->buffer_lock){....}-{2:2} -> (&new->fa_lock){.+.+}-{2:2} [ 54.479192][ T8430] [ 54.479192][ T8430] but this new dependency connects a HARDIRQ-irq-safe lock: [ 54.489409][ T8430] (&dev->event_lock){-...}-{2:2} [ 54.489433][ T8430] [ 54.489433][ T8430] ... which became HARDIRQ-irq-safe at: [ 54.502307][ T8430] lock_acquire+0x182/0x4a0 [ 54.507120][ T8430] _raw_spin_lock_irqsave+0xb3/0x100 [ 54.512508][ T8430] input_event+0x89/0xc0 [ 54.516964][ T8430] psmouse_report_standard_packet+0x4f/0x200 [ 54.523819][ T8430] psmouse_process_byte+0x44f/0x640 [ 54.529409][ T8430] psmouse_handle_byte+0x44/0x4a0 [ 54.535056][ T8430] psmouse_interrupt+0x6d0/0x10c0 [ 54.540260][ T8430] serio_interrupt+0x88/0x130 [ 54.545032][ T8430] i8042_interrupt+0x34c/0x740 [ 54.550263][ T8430] __handle_irq_event_percpu+0x20a/0x6d0 [ 54.556179][ T8430] handle_irq_event+0x10a/0x300 [ 54.561337][ T8430] handle_edge_irq+0x245/0xbe0 [ 54.566270][ T8430] __common_interrupt+0xce/0x1e0 [ 54.571438][ T8430] common_interrupt+0x9c/0xc0 [ 54.576384][ T8430] asm_common_interrupt+0x1e/0x40 [ 54.581663][ T8430] _raw_spin_unlock_irqrestore+0xbc/0x120 [ 54.587558][ T8430] i8042_aux_write+0x118/0x190 [ 54.592597][ T8430] ps2_do_sendbyte+0x210/0x710 [ 54.597717][ T8430] ps2_sendbyte+0x5c/0x110 [ 54.602351][ T8430] cypress_ps2_read_cmd_status+0x151/0x600 [ 54.608588][ T8430] cypress_send_ext_cmd+0xfa/0x3e0 [ 54.614034][ T8430] cypress_detect+0x80/0x210 [ 54.618808][ T8430] psmouse_extensions+0x14a1/0x2130 [ 54.624104][ T8430] psmouse_switch_protocol+0x307/0x840 [ 54.629730][ T8430] psmouse_connect+0x918/0x1630 [ 54.634960][ T8430] serio_driver_probe+0x76/0x90 [ 54.640985][ T8430] call_driver_probe+0x96/0x250 [ 54.646356][ T8430] really_probe+0x223/0x9c0 [ 54.651306][ T8430] __driver_probe_device+0x1f8/0x3e0 [ 54.656683][ T8430] driver_probe_device+0x50/0x240 [ 54.661798][ T8430] __driver_attach+0x2ba/0x520 [ 54.666732][ T8430] bus_for_each_dev+0x168/0x1d0 [ 54.671674][ T8430] serio_handle_event+0x8d1/0x1070 [ 54.676962][ T8430] process_one_work+0x833/0x10c0 [ 54.682110][ T8430] worker_thread+0xac1/0x1320 [ 54.687000][ T8430] kthread+0x453/0x480 [ 54.691234][ T8430] ret_from_fork+0x1f/0x30 [ 54.696094][ T8430] [ 54.696094][ T8430] to a HARDIRQ-irq-unsafe lock: [ 54.703427][ T8430] (&new->fa_lock){.+.+}-{2:2} [ 54.703486][ T8430] [ 54.703486][ T8430] ... which became HARDIRQ-irq-unsafe at: [ 54.716537][ T8430] ... [ 54.716546][ T8430] lock_acquire+0x182/0x4a0 [ 54.724039][ T8430] _raw_read_lock+0x32/0x40 [ 54.730633][ T8430] kill_fasync+0x13b/0x430 [ 54.735230][ T8430] __se_sys_vmsplice+0x86f/0x960 [ 54.740862][ T8430] do_syscall_64+0x3d/0xb0 [ 54.745622][ T8430] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 54.751740][ T8430] [ 54.751740][ T8430] other info that might help us debug this: [ 54.751740][ T8430] [ 54.762956][ T8430] Chain exists of: [ 54.762956][ T8430] &dev->event_lock --> &client->buffer_lock --> &new->fa_lock [ 54.762956][ T8430] [ 54.776957][ T8430] Possible interrupt unsafe locking scenario: [ 54.776957][ T8430] [ 54.785820][ T8430] CPU0 CPU1 [ 54.791283][ T8430] ---- ---- [ 54.797014][ T8430] lock(&new->fa_lock); [ 54.801268][ T8430] local_irq_disable(); [ 54.808023][ T8430] lock(&dev->event_lock); [ 54.815149][ T8430] lock(&client->buffer_lock); [ 54.822523][ T8430] [ 54.826275][ T8430] lock(&dev->event_lock); [ 54.831047][ T8430] [ 54.831047][ T8430] *** DEADLOCK *** [ 54.831047][ T8430] [ 54.840181][ T8430] 7 locks held by syz-executor840/8430: [ 54.848823][ T8430] #0: ffff888023578110 (&evdev->mutex){+.+.}-{3:3}, at: evdev_write+0x234/0x780 [ 54.858041][ T8430] #1: ffff888023252230 (&dev->event_lock){-...}-{2:2}, at: input_inject_event+0xb4/0x270 [ 54.868149][ T8430] #2: ffffffff8c7177c0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 [ 54.877731][ T8430] #3: ffffffff8c7177c0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 [ 54.887342][ T8430] #4: ffffffff8c7177c0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 [ 54.896675][ T8430] #5: ffff888028bd2028 (&client->buffer_lock){....}-{2:2}, at: evdev_pass_values+0xd9/0xaa0 [ 54.907137][ T8430] #6: ffffffff8c7177c0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 [ 54.917574][ T8430] [ 54.917574][ T8430] the dependencies between HARDIRQ-irq-safe lock and the holding lock: [ 54.928266][ T8430] -> (&dev->event_lock){-...}-{2:2} { [ 54.933971][ T8430] IN-HARDIRQ-W at: [ 54.938185][ T8430] lock_acquire+0x182/0x4a0 [ 54.944724][ T8430] _raw_spin_lock_irqsave+0xb3/0x100 [ 54.952183][ T8430] input_event+0x89/0xc0 [ 54.958335][ T8430] psmouse_report_standard_packet+0x4f/0x200 [ 54.966893][ T8430] psmouse_process_byte+0x44f/0x640 [ 54.974919][ T8430] psmouse_handle_byte+0x44/0x4a0 [ 54.982413][ T8430] psmouse_interrupt+0x6d0/0x10c0 [ 54.990019][ T8430] serio_interrupt+0x88/0x130 [ 54.996597][ T8430] i8042_interrupt+0x34c/0x740 [ 55.003849][ T8430] __handle_irq_event_percpu+0x20a/0x6d0 [ 55.011297][ T8430] handle_irq_event+0x10a/0x300 [ 55.018356][ T8430] handle_edge_irq+0x245/0xbe0 [ 55.025032][ T8430] __common_interrupt+0xce/0x1e0 [ 55.032043][ T8430] common_interrupt+0x9c/0xc0 [ 55.038918][ T8430] asm_common_interrupt+0x1e/0x40 [ 55.045931][ T8430] _raw_spin_unlock_irqrestore+0xbc/0x120 [ 55.053709][ T8430] i8042_aux_write+0x118/0x190 [ 55.060295][ T8430] ps2_do_sendbyte+0x210/0x710 [ 55.066961][ T8430] ps2_sendbyte+0x5c/0x110 [ 55.073359][ T8430] cypress_ps2_read_cmd_status+0x151/0x600 [ 55.081074][ T8430] cypress_send_ext_cmd+0xfa/0x3e0 [ 55.088019][ T8430] cypress_detect+0x80/0x210 [ 55.094608][ T8430] psmouse_extensions+0x14a1/0x2130 [ 55.101807][ T8430] psmouse_switch_protocol+0x307/0x840 [ 55.109515][ T8430] psmouse_connect+0x918/0x1630 [ 55.116290][ T8430] serio_driver_probe+0x76/0x90 [ 55.123258][ T8430] call_driver_probe+0x96/0x250 [ 55.129936][ T8430] really_probe+0x223/0x9c0 [ 55.136490][ T8430] __driver_probe_device+0x1f8/0x3e0 [ 55.143762][ T8430] driver_probe_device+0x50/0x240 [ 55.150799][ T8430] __driver_attach+0x2ba/0x520 [ 55.157707][ T8430] bus_for_each_dev+0x168/0x1d0 [ 55.164486][ T8430] serio_handle_event+0x8d1/0x1070 [ 55.171583][ T8430] process_one_work+0x833/0x10c0 [ 55.178686][ T8430] worker_thread+0xac1/0x1320 [ 55.185905][ T8430] kthread+0x453/0x480 [ 55.192086][ T8430] ret_from_fork+0x1f/0x30 [ 55.198536][ T8430] INITIAL USE at: [ 55.202508][ T8430] lock_acquire+0x182/0x4a0 [ 55.208759][ T8430] _raw_spin_lock_irqsave+0xb3/0x100 [ 55.215948][ T8430] input_inject_event+0xb4/0x270 [ 55.222772][ T8430] led_trigger_event+0x6f/0xd0 [ 55.229531][ T8430] kbd_led_trigger_activate+0xb8/0x100 [ 55.237208][ T8430] led_trigger_set+0x514/0x940 [ 55.244565][ T8430] led_trigger_set_default+0x1ca/0x200 [ 55.251848][ T8430] led_classdev_register_ext+0x690/0x870 [ 55.259419][ T8430] input_leds_connect+0x53e/0x790 [ 55.267108][ T8430] input_register_device+0xe25/0x1350 [ 55.274214][ T8430] atkbd_connect+0x74f/0xa60 [ 55.280705][ T8430] serio_driver_probe+0x76/0x90 [ 55.287478][ T8430] call_driver_probe+0x96/0x250 [ 55.294240][ T8430] really_probe+0x223/0x9c0 [ 55.300570][ T8430] __driver_probe_device+0x1f8/0x3e0 [ 55.307680][ T8430] driver_probe_device+0x50/0x240 [ 55.314903][ T8430] __driver_attach+0x2ba/0x520 [ 55.321470][ T8430] bus_for_each_dev+0x168/0x1d0 [ 55.328407][ T8430] serio_handle_event+0x8d1/0x1070 [ 55.336510][ T8430] process_one_work+0x833/0x10c0 [ 55.343273][ T8430] worker_thread+0xac1/0x1320 [ 55.350197][ T8430] kthread+0x453/0x480 [ 55.356051][ T8430] ret_from_fork+0x1f/0x30 [ 55.362642][ T8430] } [ 55.365303][ T8430] ... key at: [] input_allocate_device.__key.6+0x0/0x40 [ 55.375659][ T8430] -> (&client->buffer_lock){....}-{2:2} { [ 55.382358][ T8430] INITIAL USE at: [ 55.386444][ T8430] lock_acquire+0x182/0x4a0 [ 55.392696][ T8430] _raw_spin_lock+0x2a/0x40 [ 55.399359][ T8430] evdev_pass_values+0xd9/0xaa0 [ 55.409370][ T8430] evdev_events+0x195/0x280 [ 55.416783][ T8430] input_pass_values+0x87c/0x11e0 [ 55.423782][ T8430] input_handle_event+0xb99/0x1550 [ 55.430637][ T8430] input_inject_event+0x189/0x270 [ 55.437365][ T8430] evdev_write+0x5f0/0x780 [ 55.443515][ T8430] vfs_write+0x289/0xc90 [ 55.449806][ T8430] ksys_write+0x171/0x2a0 [ 55.455785][ T8430] do_syscall_64+0x3d/0xb0 [ 55.461780][ T8430] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 55.469515][ T8430] } [ 55.472086][ T8430] ... key at: [] evdev_open.__key.23+0x0/0x40 [ 55.480319][ T8430] ... acquired at: [ 55.484113][ T8430] lock_acquire+0x182/0x4a0 [ 55.488873][ T8430] _raw_spin_lock+0x2a/0x40 [ 55.494062][ T8430] evdev_pass_values+0xd9/0xaa0 [ 55.499117][ T8430] evdev_events+0x195/0x280 [ 55.504083][ T8430] input_pass_values+0x87c/0x11e0 [ 55.509313][ T8430] input_handle_event+0xb99/0x1550 [ 55.514672][ T8430] input_inject_event+0x189/0x270 [ 55.519883][ T8430] evdev_write+0x5f0/0x780 [ 55.524546][ T8430] vfs_write+0x289/0xc90 [ 55.529053][ T8430] ksys_write+0x171/0x2a0 [ 55.533649][ T8430] do_syscall_64+0x3d/0xb0 [ 55.538456][ T8430] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 55.544776][ T8430] [ 55.547750][ T8430] [ 55.547750][ T8430] the dependencies between the lock to be acquired [ 55.547759][ T8430] and HARDIRQ-irq-unsafe lock: [ 55.561429][ T8430] -> (&new->fa_lock){.+.+}-{2:2} { [ 55.566737][ T8430] HARDIRQ-ON-R at: [ 55.571151][ T8430] lock_acquire+0x182/0x4a0 [ 55.577569][ T8430] _raw_read_lock+0x32/0x40 [ 55.583812][ T8430] kill_fasync+0x13b/0x430 [ 55.590090][ T8430] __se_sys_vmsplice+0x86f/0x960 [ 55.596880][ T8430] do_syscall_64+0x3d/0xb0 [ 55.603351][ T8430] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 55.611546][ T8430] SOFTIRQ-ON-R at: [ 55.615515][ T8430] lock_acquire+0x182/0x4a0 [ 55.621809][ T8430] _raw_read_lock+0x32/0x40 [ 55.628079][ T8430] kill_fasync+0x13b/0x430 [ 55.634780][ T8430] __se_sys_vmsplice+0x86f/0x960 [ 55.641419][ T8430] do_syscall_64+0x3d/0xb0 [ 55.647771][ T8430] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 55.656245][ T8430] INITIAL READ USE at: [ 55.661375][ T8430] lock_acquire+0x182/0x4a0 [ 55.668004][ T8430] _raw_read_lock+0x32/0x40 [ 55.674737][ T8430] kill_fasync+0x13b/0x430 [ 55.681738][ T8430] __se_sys_vmsplice+0x86f/0x960 [ 55.689027][ T8430] do_syscall_64+0x3d/0xb0 [ 55.695646][ T8430] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 55.704427][ T8430] } [ 55.706916][ T8430] ... key at: [] fasync_insert_entry.__key+0x0/0x40 [ 55.715758][ T8430] ... acquired at: [ 55.719811][ T8430] lock_acquire+0x182/0x4a0 [ 55.724719][ T8430] _raw_read_lock+0x32/0x40 [ 55.729700][ T8430] kill_fasync+0x13b/0x430 [ 55.734290][ T8430] evdev_pass_values+0x58a/0xaa0 [ 55.739487][ T8430] evdev_events+0x195/0x280 [ 55.744479][ T8430] input_pass_values+0x87c/0x11e0 [ 55.749812][ T8430] input_handle_event+0xb99/0x1550 [ 55.755279][ T8430] input_inject_event+0x189/0x270 [ 55.760879][ T8430] evdev_write+0x5f0/0x780 [ 55.765545][ T8430] vfs_write+0x289/0xc90 [ 55.770032][ T8430] ksys_write+0x171/0x2a0 [ 55.774868][ T8430] do_syscall_64+0x3d/0xb0 [ 55.779816][ T8430] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 55.785961][ T8430] [ 55.788267][ T8430] [ 55.788267][ T8430] stack backtrace: [ 55.794140][ T8430] CPU: 1 PID: 8430 Comm: syz-executor840 Not tainted 5.14.0-rc3-syzkaller #0 [ 55.803337][ T8430] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.813744][ T8430] Call Trace: [ 55.817271][ T8430] dump_stack_lvl+0x1ae/0x29f [ 55.822045][ T8430] ? show_regs_print_info+0x12/0x12 [ 55.827239][ T8430] ? log_buf_vmcoreinfo_setup+0x498/0x498 [ 55.833087][ T8430] ? print_shortest_lock_dependencies+0xd4/0x150 [ 55.840014][ T8430] check_prevs_add+0x4eaa/0x5b30 [ 55.845566][ T8430] ? reacquire_held_locks+0x5f0/0x5f0 [ 55.851476][ T8430] ? reacquire_held_locks+0x5f0/0x5f0 [ 55.857050][ T8430] ? __lock_acquire+0x6100/0x6100 [ 55.862270][ T8430] ? __rcu_read_lock+0x60/0x60 [ 55.867491][ T8430] ? stack_trace_save+0x1e0/0x1e0 [ 55.872856][ T8430] ? stack_trace_save+0x1e0/0x1e0 [ 55.878059][ T8430] ? is_bpf_text_address+0x253/0x270 [ 55.883345][ T8430] ? stack_trace_save+0x1e0/0x1e0 [ 55.888663][ T8430] ? __kernel_text_address+0x93/0x100 [ 55.894278][ T8430] ? unwind_get_return_address+0x48/0x80 [ 55.900148][ T8430] ? arch_stack_walk+0x98/0xe0 [ 55.905003][ T8430] ? stack_trace_save+0x104/0x1e0 [ 55.910154][ T8430] ? stack_trace_snprint+0xe0/0xe0 [ 55.915479][ T8430] ? lockdep_lock+0x102/0x2c0 [ 55.920437][ T8430] ? lockdep_unlock+0x145/0x2e0 [ 55.926097][ T8430] ? mark_lock+0x199/0x1eb0 [ 55.930707][ T8430] ? mark_lock+0x5dc/0x1eb0 [ 55.935296][ T8430] ? __bfs+0x700/0x700 [ 55.939643][ T8430] ? __bfs+0x700/0x700 [ 55.943729][ T8430] ? lockdep_lock+0x102/0x2c0 [ 55.948411][ T8430] ? lockdep_unlock+0x145/0x2e0 [ 55.953520][ T8430] ? register_lock_class+0xd7/0x1210 [ 55.958815][ T8430] ? lockdep_lock+0x102/0x2c0 [ 55.963690][ T8430] ? lockdep_lock+0x102/0x2c0 [ 55.968477][ T8430] ? lockdep_unlock+0x145/0x2e0 [ 55.973527][ T8430] __lock_acquire+0x4476/0x6100 [ 55.978666][ T8430] ? __lock_acquire+0x44fa/0x6100 [ 55.984123][ T8430] ? trace_lock_acquire+0x190/0x190 [ 55.989875][ T8430] ? trace_lock_acquire+0x190/0x190 [ 55.995178][ T8430] ? trace_lock_acquire+0x190/0x190 [ 56.000669][ T8430] ? rcu_read_lock_sched_held+0x87/0x110 [ 56.006618][ T8430] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 56.013062][ T8430] ? rcu_read_lock_sched_held+0x87/0x110 [ 56.018750][ T8430] lock_acquire+0x182/0x4a0 [ 56.023343][ T8430] ? kill_fasync+0x13b/0x430 [ 56.028005][ T8430] ? read_lock_is_recursive+0x10/0x10 [ 56.033592][ T8430] ? do_raw_spin_lock+0x151/0x8e0 [ 56.038822][ T8430] _raw_read_lock+0x32/0x40 [ 56.043522][ T8430] ? kill_fasync+0x13b/0x430 [ 56.049202][ T8430] kill_fasync+0x13b/0x430 [ 56.053829][ T8430] evdev_pass_values+0x58a/0xaa0 [ 56.058774][ T8430] ? evdev_pass_values+0x531/0xaa0 [ 56.063892][ T8430] evdev_events+0x195/0x280 [ 56.068531][ T8430] ? evdev_event+0x170/0x170 [ 56.073382][ T8430] ? asan.module_ctor+0x10/0x10 [ 56.078651][ T8430] input_pass_values+0x87c/0x11e0 [ 56.083787][ T8430] input_handle_event+0xb99/0x1550 [ 56.089091][ T8430] input_inject_event+0x189/0x270 [ 56.094125][ T8430] evdev_write+0x5f0/0x780 [ 56.098543][ T8430] ? evdev_read+0xe10/0xe10 [ 56.103152][ T8430] ? rcu_read_lock_sched_held+0x87/0x110 [ 56.108940][ T8430] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 56.115065][ T8430] ? rw_verify_area+0x1b8/0x370 [ 56.119914][ T8430] ? fsnotify_perm+0x63/0x4d0 [ 56.124590][ T8430] ? evdev_read+0xe10/0xe10 [ 56.129237][ T8430] vfs_write+0x289/0xc90 [ 56.133999][ T8430] ? file_end_write+0x230/0x230 [ 56.139043][ T8430] ? __context_tracking_exit+0x7a/0xd0 [ 56.144554][ T8430] ? __lock_acquire+0x6100/0x6100 [ 56.149692][ T8430] ? __fdget_pos+0x1d8/0x2f0 [ 56.154515][ T8430] ksys_write+0x171/0x2a0 [ 56.158953][ T8430] ? __ia32_sys_read+0x80/0x80 [ 56.163800][ T8430] ? syscall_enter_from_user_mode+0x2e/0x1b0 [ 56.170135][ T8430] ? lockdep_hardirqs_on+0x8d/0x130 [ 56.175684][ T8430] ? syscall_enter_from_user_mode+0x2e/0x1b0 [ 56.181668][ T8430] do_syscall_64+0x3d/0xb0 [ 56.186213][ T8430] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 56.192368][ T8430] RIP: 0033:0x4435d9 [ 56.196357][ T8430] 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 [ 56.215944][ T8430] RSP: 002b:00007ffe867ff278 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 56.224340][ T8430] RAX: ffffffffffffffda RBX: 00000000004004a0 RCX: 00000000004435d9 [ 56.232820][ T8430] RDX: 00000000000002b8 RSI: 0000000020000040 RDI: 0000000000000005 [ 56.242095][ T8430] RBP: 0000000000403180 R08: 00000000004004a0 R09: 00000000004004a0 [ 56.250572][ T8430] R10: 00000000004004a0 R11: 00000000000