Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.24' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 27.224228] FAULT_INJECTION: forcing a failure. [ 27.224228] name failslab, interval 1, probability 0, space 0, times 1 [ 27.235908] CPU: 1 PID: 7980 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0 [ 27.243762] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 27.253091] Call Trace: [ 27.255664] dump_stack+0x1b2/0x281 [ 27.259267] should_fail.cold+0x10a/0x149 [ 27.263448] should_failslab+0xd6/0x130 [ 27.267398] __kmalloc+0x6d/0x400 [ 27.270829] ? tty_buffer_alloc+0xc0/0x270 [ 27.275034] tty_buffer_alloc+0xc0/0x270 [ 27.279076] __tty_buffer_request_room+0x12c/0x290 [ 27.283984] tty_insert_flip_string_fixed_flag+0x8b/0x210 [ 27.289510] tty_insert_flip_string_and_push_buffer+0x3e/0x160 [ 27.295480] pty_write+0xc3/0xf0 [ 27.298824] tty_put_char+0xfe/0x120 [ 27.302516] ? dev_match_devt+0x80/0x80 [ 27.306468] ? pty_write_room+0xa9/0xd0 [ 27.310436] ? ptmx_open+0x300/0x300 [ 27.314125] __process_echoes+0x48c/0x8c0 [ 27.318245] process_echoes+0xe9/0x1a0 [ 27.322113] n_tty_set_termios+0x60f/0xcc0 [ 27.326324] ? process_echoes+0x1a0/0x1a0 [ 27.330448] tty_set_termios+0x5d5/0x810 [ 27.334485] ? tty_wait_until_sent+0x470/0x470 [ 27.339043] ? n_tty_packet_mode_flush+0xe/0x170 [ 27.343775] ? n_tty_close+0x1f0/0x1f0 [ 27.347635] set_termios.part.0+0x244/0x3f0 [ 27.351933] ? set_termiox+0x280/0x280 [ 27.355795] tty_mode_ioctl+0x7fc/0xa80 [ 27.359743] ? get_termio+0x240/0x240 [ 27.363517] ? __ldsem_down_read_nested+0x91/0x610 [ 27.368479] ? __ldsem_down_read_nested+0xb0/0x610 [ 27.373388] ? _kstrtoull+0x1f2/0x450 [ 27.377165] ? __ldsem_down_write_nested+0x700/0x700 [ 27.382245] n_tty_ioctl_helper+0x44/0x350 [ 27.386470] n_tty_ioctl+0x47/0x2e0 [ 27.390074] tty_ioctl+0x5af/0x1430 [ 27.393675] ? n_tty_poll+0x7d0/0x7d0 [ 27.397447] ? tty_fasync+0x2c0/0x2c0 [ 27.401225] ? proc_fail_nth_write+0x7b/0x180 [ 27.405693] ? trace_hardirqs_on+0x10/0x10 [ 27.409901] ? fsnotify+0x974/0x11b0 [ 27.413589] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 27.418491] ? debug_check_no_obj_freed+0x2c0/0x680 [ 27.423478] ? SyS_write+0x1b7/0x210 [ 27.427167] ? tty_fasync+0x2c0/0x2c0 [ 27.430940] do_vfs_ioctl+0x75a/0xff0 [ 27.434730] ? lock_acquire+0x170/0x3f0 [ 27.438676] ? ioctl_preallocate+0x1a0/0x1a0 [ 27.443057] ? __fget+0x265/0x3e0 [ 27.446480] ? do_vfs_ioctl+0xff0/0xff0 [ 27.450430] ? security_file_ioctl+0x83/0xb0 [ 27.454833] SyS_ioctl+0x7f/0xb0 [ 27.458189] ? do_vfs_ioctl+0xff0/0xff0 [ 27.462134] do_syscall_64+0x1d5/0x640 [ 27.465997] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 27.471254] [ 27.471256] ====================================================== [ 27.471258] WARNING: possible circular locking dependency detected [ 27.471259] 4.14.300-syzkaller #0 Not tainted [ 27.471261] ------------------------------------------------------ [ 27.471263] syz-executor370/7980 is trying to acquire lock: [ 27.471264] (console_owner){....}, at: [] console_unlock+0x307/0xf20 [ 27.471268] [ 27.471269] but task is already holding lock: [ 27.471270] (&(&port->lock)->rlock){-.-.}, at: [] tty_insert_flip_string_and_push_buffer+0x2b/0x160 [ 27.471275] [ 27.471276] which lock already depends on the new lock. [ 27.471277] [ 27.471277] [ 27.471279] the existing dependency chain (in reverse order) is: [ 27.471280] [ 27.471281] -> #2 (&(&port->lock)->rlock){-.-.}: [ 27.471285] _raw_spin_lock_irqsave+0x8c/0xc0 [ 27.471286] tty_port_tty_get+0x1d/0x80 [ 27.471288] tty_port_default_wakeup+0x11/0x40 [ 27.471289] serial8250_tx_chars+0x3fe/0xc70 [ 27.471290] serial8250_handle_irq.part.0+0x2c7/0x390 [ 27.471292] serial8250_default_handle_irq+0x8a/0x1f0 [ 27.471293] serial8250_interrupt+0xf3/0x210 [ 27.471295] __handle_irq_event_percpu+0xee/0x7f0 [ 27.471296] handle_irq_event+0xed/0x240 [ 27.471297] handle_edge_irq+0x224/0xc40 [ 27.471298] handle_irq+0x35/0x50 [ 27.471299] do_IRQ+0x93/0x1d0 [ 27.471301] ret_from_intr+0x0/0x1e [ 27.471301] [ 27.471302] -> #1 (&port_lock_key){-.-.}: [ 27.471306] _raw_spin_lock_irqsave+0x8c/0xc0 [ 27.471308] serial8250_console_write+0x8cb/0xb40 [ 27.471309] console_unlock+0x99d/0xf20 [ 27.471310] vprintk_emit+0x224/0x620 [ 27.471311] vprintk_func+0x58/0x160 [ 27.471312] printk+0x9e/0xbc [ 27.471313] register_console+0x6f4/0xad0 [ 27.471315] univ8250_console_init+0x2f/0x3a [ 27.471316] console_init+0x46/0x53 [ 27.471317] start_kernel+0x521/0x763 [ 27.471319] secondary_startup_64+0xa5/0xb0 [ 27.471319] [ 27.471320] -> #0 (console_owner){....}: [ 27.471324] lock_acquire+0x170/0x3f0 [ 27.471325] console_unlock+0x36f/0xf20 [ 27.471326] vprintk_emit+0x224/0x620 [ 27.471327] vprintk_func+0x58/0x160 [ 27.471329] printk+0x9e/0xbc [ 27.471330] should_fail.cold+0xdf/0x149 [ 27.471331] should_failslab+0xd6/0x130 [ 27.471332] __kmalloc+0x6d/0x400 [ 27.471333] tty_buffer_alloc+0xc0/0x270 [ 27.471335] __tty_buffer_request_room+0x12c/0x290 [ 27.471337] tty_insert_flip_string_fixed_flag+0x8b/0x210 [ 27.471338] tty_insert_flip_string_and_push_buffer+0x3e/0x160 [ 27.471339] pty_write+0xc3/0xf0 [ 27.471341] tty_put_char+0xfe/0x120 [ 27.471342] __process_echoes+0x48c/0x8c0 [ 27.471343] process_echoes+0xe9/0x1a0 [ 27.471345] n_tty_set_termios+0x60f/0xcc0 [ 27.471346] tty_set_termios+0x5d5/0x810 [ 27.471347] set_termios.part.0+0x244/0x3f0 [ 27.471348] tty_mode_ioctl+0x7fc/0xa80 [ 27.471350] n_tty_ioctl_helper+0x44/0x350 [ 27.471351] n_tty_ioctl+0x47/0x2e0 [ 27.471352] tty_ioctl+0x5af/0x1430 [ 27.471353] do_vfs_ioctl+0x75a/0xff0 [ 27.471354] SyS_ioctl+0x7f/0xb0 [ 27.471356] do_syscall_64+0x1d5/0x640 [ 27.471357] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 27.471358] [ 27.471359] other info that might help us debug this: [ 27.471360] [ 27.471361] Chain exists of: [ 27.471361] console_owner --> &port_lock_key --> &(&port->lock)->rlock [ 27.471367] [ 27.471368] Possible unsafe locking scenario: [ 27.471368] [ 27.471370] CPU0 CPU1 [ 27.471371] ---- ---- [ 27.471372] lock(&(&port->lock)->rlock); [ 27.471375] lock(&port_lock_key); [ 27.471377] lock(&(&port->lock)->rlock); [ 27.471380] lock(console_owner); [ 27.471382] [ 27.471383] *** DEADLOCK *** [ 27.471384] [ 27.471385] 6 locks held by syz-executor370/7980: [ 27.471386] #0: (&tty->ldisc_sem){++++}, at: [] tty_ldisc_ref_wait+0x22/0x80 [ 27.471390] #1: (&o_tty->termios_rwsem/1){++++}, at: [] tty_set_termios+0xd3/0x810 [ 27.471395] #2: (&tty->ldisc_sem){++++}, at: [] tty_ldisc_ref+0x1b/0x80 [ 27.471400] #3: (&ldata->output_lock){+.+.}, at: [] process_echoes+0x9f/0x1a0 [ 27.471404] #4: (&(&port->lock)->rlock){-.-.}, at: [] tty_insert_flip_string_and_push_buffer+0x2b/0x160 [ 27.471409] #5: (console_lock){+.+.}, at: [] vprintk_func+0x58/0x160 [ 27.471413] [ 27.471414] stack backtrace: [ 27.471416] CPU: 1 PID: 7980 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0 [ 27.471419] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 27.471420] Call Trace: [ 27.471421] dump_stack+0x1b2/0x281 [ 27.471422] print_circular_bug.constprop.0.cold+0x2d7/0x41e [ 27.471424] __lock_acquire+0x2e0e/0x3f20 [ 27.471425] ? trace_hardirqs_on+0x10/0x10 [ 27.471426] ? snprintf+0xd0/0xd0 [ 27.471427] ? console_unlock+0x34a/0xf20 [ 27.471428] lock_acquire+0x170/0x3f0 [ 27.471430] ? console_unlock+0x307/0xf20 [ 27.471431] console_unlock+0x36f/0xf20 [ 27.471432] ? console_unlock+0x307/0xf20 [ 27.471433] vprintk_emit+0x224/0x620 [ 27.471434] vprintk_func+0x58/0x160 [ 27.471435] printk+0x9e/0xbc [ 27.471436] ? log_store.cold+0x16/0x16 [ 27.471438] ? ___ratelimit+0x2b5/0x510 [ 27.471439] should_fail.cold+0xdf/0x149 [ 27.471440] should_failslab+0xd6/0x130 [ 27.471441] __kmalloc+0x6d/0x400 [ 27.471446] ? tty_buffer_alloc+0xc0/0x270 [ 27.471448] tty_buffer_alloc+0xc0/0x270 [ 27.471449] __tty_buffer_request_room+0x12c/0x290 [ 27.471451] tty_insert_flip_string_fixed_flag+0x8b/0x210 [ 27.471452] tty_insert_flip_string_and_push_buffer+0x3e/0x160 [ 27.471453] pty_write+0xc3/0xf0 [ 27.471454] tty_put_char+0xfe/0x120 [ 27.471456] ? dev_match_devt+0x80/0x80 [ 27.471457] ? pty_write_room+0xa9/0xd0 [ 27.471458] ? ptmx_open+0x300/0x300 [ 27.471459] __process_echoes+0x48c/0x8c0 [ 27.471460] process_echoes+0xe9/0x1a0 [ 27.471462] n_tty_set_termios+0x60f/0xcc0 [ 27.471463] ? process_echoes+0x1a0/0x1a0 [ 27.471464] tty_set_termios+0x5d5/0x810 [ 27.471465] ? tty_wait_until_sent+0x470/0x470 [ 27.471467] ? n_tty_packet_mode_flush+0xe/0x170 [ 27.471468] ? n_tty_close+0x1f0/0x1f0 [ 27.471469] set_termios.part.0+0x244/0x3f0 [ 27.471470] ? set_termiox+0x280/0x280 [ 27.471471] tty_mode_ioctl+0x7fc/0xa80 [ 27.471473] ? get_termio+0x240/0x240 [ 27.471474] ? __ldsem_down_read_nested+0x91/0x610 [ 27.471475] ? __ldsem_down_read_nested+0xb0/0x610 [ 27.471476] ? _kstrtoull+0x1f2/0x450 [ 27.471478] ? __ldsem_down_write_nested+0x700/0x700 [ 27.471479] n_tty_ioctl_helper+0x44/0x350 [ 27.471480] n_tty_ioctl+0x47/0x2e0 [ 27.471481] tty_ioctl+0x5af/0x1430 [ 27.471483] ? n_tty_poll+0x7d0/0x7d0 [ 27.471484] ? tty_fasync+0x2c0/0x2c0 [ 27.471485] ? proc_fail_nth_write+0x7b/0x180 [ 27.471486] ? trace_hardirqs_on+0x10/0x10 [ 27.471487] ? fsnotify+0x974/0x11b0 [ 27.471489] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 27.471490] ? debug_check_no_obj_freed+0x2c0/0x680 [ 27.471491] ? SyS_write+0x1b7/0x210 [ 27.471492] ? tty_fasync+0x2c0/0x2c0 [ 27.471493] do_vfs_ioctl+0x75a/0xff0 executing program [ 27.471495] ? lock_acquire+0x170/0x3f0 [ 27.471496] ? ioctl_preallocate+0x1a0/0x1a0 [ 27.471497] ? __fget+0x265/0x3e0 [ 27.471498] ? do_vfs_ioctl+0xff0/0xff0 [ 27.471499] ? security_file_ioctl+0x83/0xb0 [ 27.471501] SyS_ioctl+0x7f/0xb0 [ 27.471502] ? do_vfs_ioctl+0xff0/0xff0 [ 27.471503] do_syscall_64+0x1d5/0x640 [ 27.471504] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 28.270656] FAULT_INJECTION: forcing a failure. [ 28.270656] name failslab, interval 1, probability 0, space 0, times 0 [ 28.281848] CPU: 0 PID: 7983 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0 [ 28.289704] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 28.299032] Call Trace: [ 28.301599] dump_stack+0x1b2/0x281 [ 28.305198] should_fail.cold+0x10a/0x149 [ 28.309322] ? debug_object_activate+0x292/0x490 [ 28.314053] should_failslab+0xd6/0x130 [ 28.318000] __kmalloc+0x6d/0x400 [ 28.321430] ? tty_buffer_alloc+0xc0/0x270 [ 28.325637] tty_buffer_alloc+0xc0/0x270 [ 28.329670] __tty_buffer_request_room+0x12c/0x290 [ 28.334572] tty_insert_flip_string_fixed_flag+0x8b/0x210 [ 28.340084] tty_insert_flip_string_and_push_buffer+0x3e/0x160 [ 28.346123] pty_write+0xc3/0xf0 [ 28.349473] tty_put_char+0xfe/0x120 [ 28.353177] ? dev_match_devt+0x80/0x80 [ 28.357129] ? pty_write_room+0xa9/0xd0 [ 28.361077] ? ptmx_open+0x300/0x300 [ 28.364767] __process_echoes+0x48c/0x8c0 [ 28.368889] ? lock_downgrade+0x740/0x740 [ 28.373011] process_echoes+0xe9/0x1a0 [ 28.376875] n_tty_set_termios+0x60f/0xcc0 [ 28.381084] ? process_echoes+0x1a0/0x1a0 [ 28.385215] tty_set_termios+0x5d5/0x810 [ 28.389249] ? tty_wait_until_sent+0x470/0x470 [ 28.393806] ? n_tty_packet_mode_flush+0xe/0x170 [ 28.398539] ? n_tty_close+0x1f0/0x1f0 [ 28.402400] set_termios.part.0+0x244/0x3f0 [ 28.406707] ? set_termiox+0x280/0x280 [ 28.410567] ? unwind_next_frame+0x404/0x17d0 [ 28.415040] tty_mode_ioctl+0x7fc/0xa80 [ 28.418988] ? get_termio+0x240/0x240 [ 28.422762] ? __ldsem_down_read_nested+0x91/0x610 [ 28.427660] ? __ldsem_down_read_nested+0xb0/0x610 [ 28.432567] ? _kstrtoull+0x1f2/0x450 [ 28.436347] ? __ldsem_down_write_nested+0x700/0x700 [ 28.441431] n_tty_ioctl_helper+0x44/0x350 [ 28.445646] n_tty_ioctl+0x47/0x2e0 [ 28.449246] tty_ioctl+0x5af/0x1430 [ 28.452850] ? n_tty_poll+0x7d0/0x7d0 [ 28.456623] ? tty_fasync+0x2c0/0x2c0 [ 28.460420] ? proc_fail_nth_write+0x7b/0x180 [ 28.464890] ? trace_hardirqs_on+0x10/0x10 [ 28.469100] ? fsnotify+0x974/0x11b0 [ 28.472788] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 28.477712] ? debug_check_no_obj_freed+0x2c0/0x680 [ 28.482707] ? tty_fasync+0x2c0/0x2c0 [ 28.486483] do_vfs_ioctl+0x75a/0xff0 [ 28.490258] ? lock_acquire+0x170/0x3f0 [ 28.494214] ? ioctl_preallocate+0x1a0/0x1a0 [ 28.498594] ? __fget+0x265/0x3e0 [ 28.502020] ? do_vfs_ioctl+0xff0/0xff0 [ 28.505969] ? security_file_ioctl+0x83/0xb0 [ 28.510369] SyS_ioctl+0x7f/0xb0 [ 28.513795] ? do_vfs_ioctl+0xff0/0xff0 [ 28.517743] do_syscall_64+0x1d5/0x640 executing program [ 28.521606] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 28.584613] FAULT_INJECTION: forcing a failure. [ 28.584613] name failslab, interval 1, probability 0, space 0, times 0 [ 28.595804] CPU: 0 PID: 7986 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0 [ 28.603661] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 28.612991] Call Trace: [ 28.615567] dump_stack+0x1b2/0x281 [ 28.619172] should_fail.cold+0x10a/0x149 [ 28.623295] ? debug_object_activate+0x292/0x490 [ 28.628026] should_failslab+0xd6/0x130 [ 28.631975] __kmalloc+0x6d/0x400 [ 28.635409] ? tty_buffer_alloc+0xc0/0x270 [ 28.639618] tty_buffer_alloc+0xc0/0x270 [ 28.643655] __tty_buffer_request_room+0x12c/0x290 [ 28.648561] tty_insert_flip_string_fixed_flag+0x8b/0x210 [ 28.654081] tty_insert_flip_string_and_push_buffer+0x3e/0x160 [ 28.660027] pty_write+0xc3/0xf0 [ 28.663367] tty_put_char+0xfe/0x120 [ 28.667053] ? dev_match_devt+0x80/0x80 [ 28.671032] ? pty_write_room+0xa9/0xd0 [ 28.674978] ? ptmx_open+0x300/0x300 [ 28.678669] __process_echoes+0x48c/0x8c0 [ 28.682795] ? lock_downgrade+0x740/0x740 [ 28.686917] process_echoes+0xe9/0x1a0 [ 28.690782] n_tty_set_termios+0x60f/0xcc0 [ 28.694995] ? process_echoes+0x1a0/0x1a0 [ 28.699118] tty_set_termios+0x5d5/0x810 [ 28.703152] ? tty_wait_until_sent+0x470/0x470 [ 28.707711] ? n_tty_packet_mode_flush+0xe/0x170 [ 28.712445] ? n_tty_close+0x1f0/0x1f0 [ 28.716312] set_termios.part.0+0x244/0x3f0 [ 28.720608] ? set_termiox+0x280/0x280 [ 28.724471] ? unwind_next_frame+0x404/0x17d0 [ 28.728944] tty_mode_ioctl+0x7fc/0xa80 [ 28.732891] ? get_termio+0x240/0x240 [ 28.736666] ? __ldsem_down_read_nested+0x91/0x610 [ 28.741573] ? __ldsem_down_read_nested+0xb0/0x610 [ 28.746477] ? _kstrtoull+0x1f2/0x450 [ 28.750252] ? __ldsem_down_write_nested+0x700/0x700 [ 28.755329] n_tty_ioctl_helper+0x44/0x350 [ 28.759540] n_tty_ioctl+0x47/0x2e0 [ 28.763141] tty_ioctl+0x5af/0x1430 [ 28.766740] ? n_tty_poll+0x7d0/0x7d0 [ 28.770512] ? tty_fasync+0x2c0/0x2c0 [ 28.774288] ? proc_fail_nth_write+0x7b/0x180 [ 28.778758] ? trace_hardirqs_on+0x10/0x10 [ 28.782968] ? fsnotify+0x974/0x11b0 [ 28.786657] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 28.791582] ? debug_check_no_obj_freed+0x2c0/0x680 [ 28.796571] ? tty_fasync+0x2c0/0x2c0 [ 28.800344] do_vfs_ioctl+0x75a/0xff0 [ 28.804116] ? lock_acquire+0x170/0x3f0 [ 28.808066] ? ioctl_preallocate+0x1a0/0x1a0 [ 28.812451] ? __fget+0x265/0x3e0 [ 28.815878] ? do_vfs_ioctl+0xff0/0xff0 [ 28.819828] ? security_file_ioctl+0x83/0xb0 [ 28.824207] SyS_ioctl+0x7f/0xb0 [ 28.827545] ? do_vfs_ioctl+0xff0/0xff0 [ 28.831496] do_syscall_64+0x1d5/0x640 executing program [ 28.835359] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 28.910200] FAULT_INJECTION: forcing a failure. [ 28.910200] name failslab, interval 1, probability 0, space 0, times 0 [ 28.921399] CPU: 0 PID: 7989 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0 [ 28.929253] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 28.938723] Call Trace: [ 28.941295] dump_stack+0x1b2/0x281 [ 28.944903] should_fail.cold+0x10a/0x149 [ 28.949025] ? debug_object_activate+0x292/0x490 [ 28.953887] should_failslab+0xd6/0x130 [ 28.957842] __kmalloc+0x6d/0x400 [ 28.961274] ? tty_buffer_alloc+0xc0/0x270 [ 28.965486] tty_buffer_alloc+0xc0/0x270 [ 28.969523] __tty_buffer_request_room+0x12c/0x290 [ 28.974427] tty_insert_flip_string_fixed_flag+0x8b/0x210 [ 28.979940] tty_insert_flip_string_and_push_buffer+0x3e/0x160 [ 28.985892] pty_write+0xc3/0xf0 [ 28.989237] tty_put_char+0xfe/0x120 [ 28.992937] ? dev_match_devt+0x80/0x80 [ 28.996896] ? pty_write_room+0xa9/0xd0 [ 29.000845] ? ptmx_open+0x300/0x300 [ 29.004536] __process_echoes+0x48c/0x8c0 [ 29.008663] ? lock_downgrade+0x740/0x740 [ 29.012786] process_echoes+0xe9/0x1a0 [ 29.016648] n_tty_set_termios+0x60f/0xcc0 [ 29.020860] ? process_echoes+0x1a0/0x1a0 [ 29.024985] tty_set_termios+0x5d5/0x810 [ 29.029021] ? tty_wait_until_sent+0x470/0x470 [ 29.033576] ? n_tty_packet_mode_flush+0xe/0x170 [ 29.038304] ? n_tty_close+0x1f0/0x1f0 [ 29.042164] set_termios.part.0+0x244/0x3f0 [ 29.046547] ? set_termiox+0x280/0x280 [ 29.050412] ? unwind_next_frame+0x404/0x17d0 [ 29.054896] tty_mode_ioctl+0x7fc/0xa80 [ 29.058851] ? get_termio+0x240/0x240 [ 29.062626] ? __ldsem_down_read_nested+0x91/0x610 [ 29.067529] ? __ldsem_down_read_nested+0xb0/0x610 [ 29.072436] ? _kstrtoull+0x1f2/0x450 [ 29.076218] ? __ldsem_down_write_nested+0x700/0x700 [ 29.081301] n_tty_ioctl_helper+0x44/0x350 [ 29.085517] n_tty_ioctl+0x47/0x2e0 [ 29.089121] tty_ioctl+0x5af/0x1430 [ 29.092728] ? n_tty_poll+0x7d0/0x7d0 [ 29.096590] ? tty_fasync+0x2c0/0x2c0 [ 29.100366] ? proc_fail_nth_write+0x7b/0x180 [ 29.104834] ? trace_hardirqs_on+0x10/0x10 [ 29.109045] ? fsnotify+0x974/0x11b0 [ 29.112734] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 29.117647] ? debug_check_no_obj_freed+0x2c0/0x680 [ 29.122670] ? tty_fasync+0x2c0/0x2c0 [ 29.126451] do_vfs_ioctl+0x75a/0xff0 [ 29.130231] ? lock_acquire+0x170/0x3f0 [ 29.134183] ? ioctl_preallocate+0x1a0/0x1a0 [ 29.138568] ? __fget+0x265/0x3e0 [ 29.142167] ? do_vfs_ioctl+0xff0/0xff0 [ 29.146124] ? security_file_ioctl+0x83/0xb0 [ 29.150510] SyS_ioctl+0x7f/0xb0 [ 29.153856] ? do_vfs_ioctl+0xff0/0xff0 executing program [ 29.157823] do_syscall_64+0x1d5/0x640 [ 29.161695] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 29.238999] FAULT_INJECTION: forcing a failure. [ 29.238999] name failslab, interval 1, probability 0, space 0, times 0 [ 29.250214] CPU: 1 PID: 7994 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0 [ 29.258069] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 29.267483] Call Trace: [ 29.270049] dump_stack+0x1b2/0x281 [ 29.273649] should_fail.cold+0x10a/0x149 [ 29.277774] ? debug_object_activate+0x292/0x490 [ 29.282509] should_failslab+0xd6/0x130 [ 29.286458] __kmalloc+0x6d/0x400 [ 29.289885] ? tty_buffer_alloc+0xc0/0x270 [ 29.294093] tty_buffer_alloc+0xc0/0x270 [ 29.298128] __tty_buffer_request_room+0x12c/0x290 [ 29.303032] tty_insert_flip_string_fixed_flag+0x8b/0x210 [ 29.308547] tty_insert_flip_string_and_push_buffer+0x3e/0x160 [ 29.314520] pty_write+0xc3/0xf0 [ 29.317871] tty_put_char+0xfe/0x120 [ 29.321557] ? dev_match_devt+0x80/0x80 [ 29.325509] ? pty_write_room+0xa9/0xd0 [ 29.329460] ? ptmx_open+0x300/0x300 [ 29.333148] __process_echoes+0x48c/0x8c0 [ 29.337269] ? lock_downgrade+0x740/0x740 [ 29.341389] process_echoes+0xe9/0x1a0 [ 29.345285] n_tty_set_termios+0x60f/0xcc0 [ 29.349494] ? process_echoes+0x1a0/0x1a0 [ 29.353621] tty_set_termios+0x5d5/0x810 [ 29.357656] ? tty_wait_until_sent+0x470/0x470 [ 29.362209] ? n_tty_packet_mode_flush+0xe/0x170 [ 29.366936] ? n_tty_close+0x1f0/0x1f0 [ 29.370806] set_termios.part.0+0x244/0x3f0 [ 29.375102] ? set_termiox+0x280/0x280 [ 29.378965] ? unwind_next_frame+0x404/0x17d0 [ 29.383438] tty_mode_ioctl+0x7fc/0xa80 [ 29.387387] ? get_termio+0x240/0x240 [ 29.391160] ? __ldsem_down_read_nested+0x91/0x610 [ 29.396065] ? __ldsem_down_read_nested+0xb0/0x610 [ 29.400975] ? _kstrtoull+0x1f2/0x450 [ 29.404749] ? __ldsem_down_write_nested+0x700/0x700 [ 29.409826] n_tty_ioctl_helper+0x44/0x350 [ 29.414033] n_tty_ioctl+0x47/0x2e0 [ 29.417631] tty_ioctl+0x5af/0x1430 [ 29.421230] ? n_tty_poll+0x7d0/0x7d0 [ 29.425005] ? tty_fasync+0x2c0/0x2c0 [ 29.428785] ? proc_fail_nth_write+0x7b/0x180 [ 29.433254] ? trace_hardirqs_on+0x10/0x10 [ 29.437464] ? fsnotify+0x974/0x11b0 [ 29.441155] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 29.446055] ? debug_check_no_obj_freed+0x2c0/0x680 [ 29.451042] ? tty_fasync+0x2c0/0x2c0 [ 29.454815] do_vfs_ioctl+0x75a/0xff0 [ 29.458587] ? lock_acquire+0x170/0x3f0 [ 29.462532] ? ioctl_preallocate+0x1a0/0x1a0 [ 29.466916] ? __fget+0x265/0x3e0 [ 29.470345] ? do_vfs_ioctl+0xff0/0xff0 [ 29.474293] ? security_file_ioctl+0x83/0xb0 [ 29.478672] SyS_ioctl+0x7f/0xb0 [ 29.482008] ? do_vfs_ioctl+0xff0/0xff0 [ 29.485960] do_syscall_64+0x1d5/0x640 executing program [ 29.489822] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 29.551916] FAULT_INJECTION: forcing a failure. [ 29.551916] name failslab, interval 1, probability 0, space 0, times 0 [ 29.563134] CPU: 0 PID: 7997 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0 [ 29.571010] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 29.580343] Call Trace: [ 29.582929] dump_stack+0x1b2/0x281 [ 29.586535] should_fail.cold+0x10a/0x149 [ 29.590661] ? debug_object_activate+0x292/0x490 [ 29.595398] should_failslab+0xd6/0x130 [ 29.599349] __kmalloc+0x6d/0x400 [ 29.602782] ? tty_buffer_alloc+0xc0/0x270 [ 29.606996] tty_buffer_alloc+0xc0/0x270 [ 29.611036] __tty_buffer_request_room+0x12c/0x290 [ 29.615943] tty_insert_flip_string_fixed_flag+0x8b/0x210 [ 29.621463] tty_insert_flip_string_and_push_buffer+0x3e/0x160 [ 29.627406] pty_write+0xc3/0xf0 [ 29.630746] tty_put_char+0xfe/0x120 [ 29.634437] ? dev_match_devt+0x80/0x80 [ 29.638384] ? pty_write_room+0xa9/0xd0 [ 29.642333] ? ptmx_open+0x300/0x300 [ 29.646037] __process_echoes+0x48c/0x8c0 [ 29.650158] ? lock_downgrade+0x740/0x740 [ 29.654283] process_echoes+0xe9/0x1a0 [ 29.658235] n_tty_set_termios+0x60f/0xcc0 [ 29.662440] ? process_echoes+0x1a0/0x1a0 [ 29.666561] tty_set_termios+0x5d5/0x810 [ 29.670595] ? tty_wait_until_sent+0x470/0x470 [ 29.675151] ? n_tty_packet_mode_flush+0xe/0x170 [ 29.679882] ? n_tty_close+0x1f0/0x1f0 [ 29.683739] set_termios.part.0+0x244/0x3f0 [ 29.688033] ? set_termiox+0x280/0x280 [ 29.691899] ? unwind_next_frame+0x404/0x17d0 [ 29.696369] tty_mode_ioctl+0x7fc/0xa80 [ 29.700330] ? get_termio+0x240/0x240 [ 29.704103] ? __ldsem_down_read_nested+0x91/0x610 [ 29.709004] ? __ldsem_down_read_nested+0xb0/0x610 [ 29.713924] ? _kstrtoull+0x1f2/0x450 [ 29.717711] ? __ldsem_down_write_nested+0x700/0x700 [ 29.722794] n_tty_ioctl_helper+0x44/0x350 [ 29.727003] n_tty_ioctl+0x47/0x2e0 [ 29.730604] tty_ioctl+0x5af/0x1430 [ 29.734204] ? n_tty_poll+0x7d0/0x7d0 [ 29.737978] ? tty_fasync+0x2c0/0x2c0 [ 29.741760] ? proc_fail_nth_write+0x7b/0x180 [ 29.746235] ? trace_hardirqs_on+0x10/0x10 [ 29.750464] ? fsnotify+0x974/0x11b0 [ 29.754150] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 29.759051] ? debug_check_no_obj_freed+0x2c0/0x680 [ 29.764040] ? tty_fasync+0x2c0/0x2c0 [ 29.767814] do_vfs_ioctl+0x75a/0xff0 [ 29.771589] ? lock_acquire+0x170/0x3f0 [ 29.775534] ? ioctl_preallocate+0x1a0/0x1a0 [ 29.779913] ? __fget+0x265/0x3e0 [ 29.783336] ? do_vfs_ioctl+0xff0/0xff0 [ 29.787290] ? security_file_ioctl+0x83/0xb0 [ 29.791675] SyS_ioctl+0x7f/0xb0 [ 29.795014] ? do_vfs_ioctl+0xff0/0xff0 [ 29.798959] do_syscall_64+0x1d5/0x640 executing program [ 29.802820] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 29.864615] FAULT_INJECTION: forcing a failure. [ 29.864615] name failslab, interval 1, probability 0, space 0, times 0 [ 29.875992] CPU: 1 PID: 8000 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0 [ 29.883847] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 29.893205] Call Trace: [ 29.895771] dump_stack+0x1b2/0x281 [ 29.899807] should_fail.cold+0x10a/0x149 [ 29.903932] ? debug_object_activate+0x292/0x490 [ 29.908660] should_failslab+0xd6/0x130 [ 29.912620] __kmalloc+0x6d/0x400 [ 29.916070] ? tty_buffer_alloc+0xc0/0x270 [ 29.920280] tty_buffer_alloc+0xc0/0x270 [ 29.924314] __tty_buffer_request_room+0x12c/0x290 [ 29.929223] tty_insert_flip_string_fixed_flag+0x8b/0x210 [ 29.934742] tty_insert_flip_string_and_push_buffer+0x3e/0x160 [ 29.940688] pty_write+0xc3/0xf0 [ 29.944032] tty_put_char+0xfe/0x120 [ 29.947724] ? dev_match_devt+0x80/0x80 [ 29.951671] ? pty_write_room+0xa9/0xd0 [ 29.955613] ? ptmx_open+0x300/0x300 [ 29.959297] __process_echoes+0x48c/0x8c0 [ 29.963421] ? lock_downgrade+0x740/0x740 [ 29.967538] process_echoes+0xe9/0x1a0 [ 29.971403] n_tty_set_termios+0x60f/0xcc0 [ 29.975651] ? process_echoes+0x1a0/0x1a0 [ 29.979773] tty_set_termios+0x5d5/0x810 [ 29.983807] ? tty_wait_until_sent+0x470/0x470 [ 29.988366] ? n_tty_packet_mode_flush+0xe/0x170 [ 29.993095] ? n_tty_close+0x1f0/0x1f0 [ 29.996952] set_termios.part.0+0x244/0x3f0 [ 30.001248] ? set_termiox+0x280/0x280 [ 30.005108] ? unwind_next_frame+0x404/0x17d0 [ 30.009577] tty_mode_ioctl+0x7fc/0xa80 [ 30.013533] ? get_termio+0x240/0x240 [ 30.017312] ? __ldsem_down_read_nested+0x91/0x610 [ 30.022213] ? __ldsem_down_read_nested+0xb0/0x610 [ 30.027119] ? _kstrtoull+0x1f2/0x450 [ 30.030892] ? __ldsem_down_write_nested+0x700/0x700 [ 30.035967] n_tty_ioctl_helper+0x44/0x350 [ 30.040176] n_tty_ioctl+0x47/0x2e0 [ 30.043780] tty_ioctl+0x5af/0x1430 [ 30.047386] ? n_tty_poll+0x7d0/0x7d0 [ 30.051178] ? tty_fasync+0x2c0/0x2c0 [ 30.054956] ? proc_fail_nth_write+0x7b/0x180 [ 30.059425] ? trace_hardirqs_on+0x10/0x10 [ 30.063632] ? fsnotify+0x974/0x11b0 [ 30.067403] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 30.072304] ? debug_check_no_obj_freed+0x2c0/0x680 [ 30.077293] ? tty_fasync+0x2c0/0x2c0 [ 30.081065] do_vfs_ioctl+0x75a/0xff0 [ 30.084840] ? lock_acquire+0x170/0x3f0 [ 30.088785] ? ioctl_preallocate+0x1a0/0x1a0 [ 30.093172] ? __fget+0x265/0x3e0 [ 30.096690] ? do_vfs_ioctl+0xff0/0xff0 [ 30.100637] ? security_file_ioctl+0x83/0xb0 [ 30.105017] SyS_ioctl+0x7f/0xb0 [ 30.108357] ? do_vfs_ioctl+0xff0/0xff0 executing program [ 30.112306] do_syscall_64+0x1d5/0x640 [ 30.116172] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 30.193326] FAULT_INJECTION: forcing a failure. [ 30.193326] name failslab, interval 1, probability 0, space 0, times 0 [ 30.204518] CPU: 0 PID: 8003 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0 [ 30.212374] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 30.221794] Call Trace: [ 30.224361] dump_stack+0x1b2/0x281 [ 30.227964] should_fail.cold+0x10a/0x149 [ 30.232083] ? debug_object_activate+0x292/0x490 [ 30.236814] should_failslab+0xd6/0x130 [ 30.240760] __kmalloc+0x6d/0x400 [ 30.244187] ? tty_buffer_alloc+0xc0/0x270 [ 30.248394] tty_buffer_alloc+0xc0/0x270 [ 30.252430] __tty_buffer_request_room+0x12c/0x290 [ 30.257332] tty_insert_flip_string_fixed_flag+0x8b/0x210 [ 30.262843] tty_insert_flip_string_and_push_buffer+0x3e/0x160 [ 30.268787] pty_write+0xc3/0xf0 [ 30.272130] tty_put_char+0xfe/0x120 [ 30.275820] ? dev_match_devt+0x80/0x80 [ 30.279766] ? pty_write_room+0xa9/0xd0 [ 30.283712] ? ptmx_open+0x300/0x300 [ 30.287397] __process_echoes+0x48c/0x8c0 [ 30.291517] ? lock_downgrade+0x740/0x740 [ 30.295638] process_echoes+0xe9/0x1a0 [ 30.299499] n_tty_set_termios+0x60f/0xcc0 [ 30.303704] ? process_echoes+0x1a0/0x1a0 [ 30.307822] tty_set_termios+0x5d5/0x810 [ 30.311881] ? tty_wait_until_sent+0x470/0x470 [ 30.316437] ? n_tty_packet_mode_flush+0xe/0x170 [ 30.321165] ? n_tty_close+0x1f0/0x1f0 [ 30.325026] set_termios.part.0+0x244/0x3f0 [ 30.329322] ? set_termiox+0x280/0x280 [ 30.333181] ? unwind_next_frame+0x404/0x17d0 [ 30.337649] tty_mode_ioctl+0x7fc/0xa80 [ 30.341596] ? get_termio+0x240/0x240 [ 30.345370] ? __ldsem_down_read_nested+0x91/0x610 [ 30.350268] ? __ldsem_down_read_nested+0xb0/0x610 [ 30.355179] ? _kstrtoull+0x1f2/0x450 [ 30.358956] ? __ldsem_down_write_nested+0x700/0x700 [ 30.364035] n_tty_ioctl_helper+0x44/0x350 [ 30.368247] n_tty_ioctl+0x47/0x2e0 [ 30.371848] tty_ioctl+0x5af/0x1430 [ 30.375457] ? n_tty_poll+0x7d0/0x7d0 [ 30.379233] ? tty_fasync+0x2c0/0x2c0 [ 30.383013] ? proc_fail_nth_write+0x7b/0x180 [ 30.387486] ? trace_hardirqs_on+0x10/0x10 [ 30.391697] ? fsnotify+0x974/0x11b0 [ 30.395382] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 30.400284] ? debug_check_no_obj_freed+0x2c0/0x680 [ 30.405272] ? tty_fasync+0x2c0/0x2c0 [ 30.409065] do_vfs_ioctl+0x75a/0xff0 [ 30.412837] ? lock_acquire+0x170/0x3f0 [ 30.416781] ? ioctl_preallocate+0x1a0/0x1a0 [ 30.421162] ? __fget+0x265/0x3e0 [ 30.424586] ? do_vfs_ioctl+0xff0/0xff0 [ 30.428536] ? security_file_ioctl+0x83/0xb0 [ 30.432915] SyS_ioctl+0x7f/0xb0 [ 30.436253] ? do_vfs_ioctl+0xff0/0xff0 [ 30.440201] do_syscall_64+0x1d5/0x640 executing program [ 30.444153] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 30.506368] FAULT_INJECTION: forcing a failure. [ 30.506368] name failslab, interval 1, probability 0, space 0, times 0 [ 30.517636] CPU: 1 PID: 8006 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0 [ 30.525582] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 30.534916] Call Trace: [ 30.537483] dump_stack+0x1b2/0x281 [ 30.541084] should_fail.cold+0x10a/0x149 [ 30.545205] ? debug_object_activate+0x292/0x490 [ 30.549934] should_failslab+0xd6/0x130 [ 30.553881] __kmalloc+0x6d/0x400 [ 30.557309] ? tty_buffer_alloc+0xc0/0x270 [ 30.561521] tty_buffer_alloc+0xc0/0x270 [ 30.565567] __tty_buffer_request_room+0x12c/0x290 [ 30.570471] tty_insert_flip_string_fixed_flag+0x8b/0x210 [ 30.575983] tty_insert_flip_string_and_push_buffer+0x3e/0x160 [ 30.581924] pty_write+0xc3/0xf0 [ 30.585264] tty_put_char+0xfe/0x120 [ 30.588947] ? dev_match_devt+0x80/0x80 [ 30.592899] ? pty_write_room+0xa9/0xd0 [ 30.596841] ? ptmx_open+0x300/0x300 [ 30.600526] __process_echoes+0x48c/0x8c0 [ 30.604648] ? lock_downgrade+0x740/0x740 [ 30.608769] process_echoes+0xe9/0x1a0 [ 30.612626] n_tty_set_termios+0x60f/0xcc0 [ 30.616831] ? process_echoes+0x1a0/0x1a0 [ 30.620960] tty_set_termios+0x5d5/0x810 [ 30.625001] ? tty_wait_until_sent+0x470/0x470 [ 30.629556] ? n_tty_packet_mode_flush+0xe/0x170 [ 30.634294] ? n_tty_close+0x1f0/0x1f0 [ 30.638159] set_termios.part.0+0x244/0x3f0 [ 30.642535] ? set_termiox+0x280/0x280 [ 30.646401] ? unwind_next_frame+0x404/0x17d0 [ 30.650876] tty_mode_ioctl+0x7fc/0xa80 [ 30.654821] ? get_termio+0x240/0x240 [ 30.658597] ? __ldsem_down_read_nested+0x91/0x610 [ 30.663498] ? __ldsem_down_read_nested+0xb0/0x610 [ 30.668401] ? _kstrtoull+0x1f2/0x450 [ 30.672178] ? __ldsem_down_write_nested+0x700/0x700 [ 30.677253] n_tty_ioctl_helper+0x44/0x350 [ 30.681458] n_tty_ioctl+0x47/0x2e0 [ 30.685058] tty_ioctl+0x5af/0x1430 [ 30.688659] ? n_tty_poll+0x7d0/0x7d0 [ 30.692431] ? tty_fasync+0x2c0/0x2c0 [ 30.696202] ? proc_fail_nth_write+0x7b/0x180 [ 30.700675] ? trace_hardirqs_on+0x10/0x10 [ 30.704884] ? fsnotify+0x974/0x11b0 [ 30.708569] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 30.713554] ? debug_check_no_obj_freed+0x2c0/0x680 [ 30.718543] ? tty_fasync+0x2c0/0x2c0 [ 30.722313] do_vfs_ioctl+0x75a/0xff0 [ 30.726089] ? lock_acquire+0x170/0x3f0 [ 30.730034] ? ioctl_preallocate+0x1a0/0x1a0 [ 30.734414] ? __fget+0x265/0x3e0 [ 30.737874] ? do_vfs_ioctl+0xff0/0xff0 [ 30.741821] ? security_file_ioctl+0x83/0xb0 [ 30.746208] SyS_ioctl+0x7f/0xb0 [ 30.749546] ? do_vfs_ioctl+0xff0/0xff0 [ 30.753494] do_syscall_64+0x1d5/0x640 executing program [ 30.757354] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 30.820063] FAULT_INJECTION: forcing a failure. [ 30.820063] name failslab, interval 1, probability 0, space 0, times 0 [ 30.831262] CPU: 1 PID: 8009 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0 [ 30.839129] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 30.848457] Call Trace: [ 30.851025] dump_stack+0x1b2/0x281 [ 30.854629] should_fail.cold+0x10a/0x149 [ 30.858749] ? debug_object_activate+0x292/0x490 [ 30.863486] should_failslab+0xd6/0x130 [ 30.867440] __kmalloc+0x6d/0x400 [ 30.870871] ? tty_buffer_alloc+0xc0/0x270 [ 30.875088] tty_buffer_alloc+0xc0/0x270 [ 30.879130] __tty_buffer_request_room+0x12c/0x290 [ 30.884037] tty_insert_flip_string_fixed_flag+0x8b/0x210 [ 30.889558] tty_insert_flip_string_and_push_buffer+0x3e/0x160 [ 30.895505] pty_write+0xc3/0xf0 [ 30.898851] tty_put_char+0xfe/0x120 [ 30.902536] ? dev_match_devt+0x80/0x80 [ 30.906488] ? pty_write_room+0xa9/0xd0 [ 30.910434] ? ptmx_open+0x300/0x300 [ 30.914123] __process_echoes+0x48c/0x8c0 [ 30.918251] ? lock_downgrade+0x740/0x740 [ 30.922377] process_echoes+0xe9/0x1a0 [ 30.926237] n_tty_set_termios+0x60f/0xcc0 [ 30.930444] ? process_echoes+0x1a0/0x1a0 [ 30.934571] tty_set_termios+0x5d5/0x810 [ 30.938608] ? tty_wait_until_sent+0x470/0x470 [ 30.943162] ? n_tty_packet_mode_flush+0xe/0x170 [ 30.947890] ? n_tty_close+0x1f0/0x1f0 [ 30.951762] set_termios.part.0+0x244/0x3f0 [ 30.956165] ? set_termiox+0x280/0x280 [ 30.960030] ? unwind_next_frame+0x404/0x17d0 [ 30.964515] tty_mode_ioctl+0x7fc/0xa80 [ 30.968465] ? get_termio+0x240/0x240 [ 30.972243] ? __ldsem_down_read_nested+0x91/0x610 [ 30.977145] ? __ldsem_down_read_nested+0xb0/0x610 [ 30.982054] ? _kstrtoull+0x1f2/0x450 [ 30.985829] ? __ldsem_down_write_nested+0x700/0x700 [ 30.990906] n_tty_ioctl_helper+0x44/0x350 [ 30.995116] n_tty_ioctl+0x47/0x2e0 [ 30.998717] tty_ioctl+0x5af/0x1430 [ 31.002313] ? n_tty_poll+0x7d0/0x7d0 [ 31.006090] ? tty_fasync+0x2c0/0x2c0 [ 31.009864] ? proc_fail_nth_write+0x7b/0x180 [ 31.014352] ? trace_hardirqs_on+0x10/0x10 [ 31.018562] ? fsnotify+0x974/0x11b0 [ 31.022248] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 31.027147] ? debug_check_no_obj_freed+0x2c0/0x680 [ 31.032135] ? tty_fasync+0x2c0/0x2c0 [ 31.035906] do_vfs_ioctl+0x75a/0xff0 [ 31.039679] ? lock_acquire+0x170/0x3f0 [ 31.043629] ? ioctl_preallocate+0x1a0/0x1a0 [ 31.048014] ? __fget+0x265/0x3e0 [ 31.051444] ? do_vfs_ioctl+0xff0/0xff0 [ 31.055391] ? security_file_ioctl+0x83/0xb0 [ 31.059776] SyS_ioctl+0x7f/0xb0 [ 31.063117] ? do_vfs_ioctl+0xff0/0xff0 [ 31.067071] do_syscall_64+0x1d5/0x640 executing program [ 31.070933] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 31.133884] FAULT_INJECTION: forcing a failure. [ 31.133884] name failslab, interval 1, probability 0, space 0, times 0 [ 31.145075] CPU: 1 PID: 8012 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0 [ 31.152941] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 31.162266] Call Trace: [ 31.164918] dump_stack+0x1b2/0x281 [ 31.168521] should_fail.cold+0x10a/0x149 [ 31.172641] ? debug_object_activate+0x292/0x490 [ 31.177371] should_failslab+0xd6/0x130 [ 31.181319] __kmalloc+0x6d/0x400 [ 31.184846] ? tty_buffer_alloc+0xc0/0x270 [ 31.189141] tty_buffer_alloc+0xc0/0x270 [ 31.193199] __tty_buffer_request_room+0x12c/0x290 [ 31.198107] tty_insert_flip_string_fixed_flag+0x8b/0x210 [ 31.203619] tty_insert_flip_string_and_push_buffer+0x3e/0x160 [ 31.209562] pty_write+0xc3/0xf0 [ 31.212903] tty_put_char+0xfe/0x120 [ 31.216590] ? dev_match_devt+0x80/0x80 [ 31.220535] ? pty_write_room+0xa9/0xd0 [ 31.224479] ? ptmx_open+0x300/0x300 [ 31.228163] __process_echoes+0x48c/0x8c0 [ 31.232285] ? lock_downgrade+0x740/0x740 [ 31.236407] process_echoes+0xe9/0x1a0 [ 31.240266] n_tty_set_termios+0x60f/0xcc0 [ 31.244474] ? process_echoes+0x1a0/0x1a0 [ 31.248592] tty_set_termios+0x5d5/0x810 [ 31.252625] ? tty_wait_until_sent+0x470/0x470 [ 31.257178] ? n_tty_packet_mode_flush+0xe/0x170 [ 31.261905] ? n_tty_close+0x1f0/0x1f0 [ 31.265762] set_termios.part.0+0x244/0x3f0 [ 31.270055] ? set_termiox+0x280/0x280 [ 31.273920] ? unwind_next_frame+0x404/0x17d0 [ 31.278394] tty_mode_ioctl+0x7fc/0xa80 [ 31.282341] ? get_termio+0x240/0x240 [ 31.286114] ? __ldsem_down_read_nested+0x91/0x610 [ 31.291014] ? __ldsem_down_read_nested+0xb0/0x610 [ 31.295934] ? _kstrtoull+0x1f2/0x450 [ 31.299714] ? __ldsem_down_write_nested+0x700/0x700 [ 31.304789] n_tty_ioctl_helper+0x44/0x350 [ 31.308994] n_tty_ioctl+0x47/0x2e0 [ 31.312593] tty_ioctl+0x5af/0x1430 [ 31.316190] ? n_tty_poll+0x7d0/0x7d0 [ 31.319964] ? tty_fasync+0x2c0/0x2c0 [ 31.323738] ? proc_fail_nth_write+0x7b/0x180 [ 31.328206] ? trace_hardirqs_on+0x10/0x10 [ 31.332420] ? fsnotify+0x974/0x11b0 [ 31.336104] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 31.341124] ? debug_check_no_obj_freed+0x2c0/0x680 [ 31.346114] ? tty_fasync+0x2c0/0x2c0 [ 31.349888] do_vfs_ioctl+0x75a/0xff0 [ 31.353672] ? lock_acquire+0x170/0x3f0 [ 31.357667] ? ioctl_preallocate+0x1a0/0x1a0 [ 31.362053] ? __fget+0x265/0x3e0 [ 31.365481] ? do_vfs_ioctl+0xff0/0xff0 [ 31.369430] ? security_file_ioctl+0x83/0xb0 [ 31.373814] SyS_ioctl+0x7f/0xb0 [ 31.377157] ? do_vfs_ioctl+0xff0/0xff0 [ 31.381111] do_syscall_64+0x1d5/0x640 executing program [ 31.384970] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 31.450699] FAULT_INJECTION: forcing a failure. [ 31.450699] name failslab, interval 1, probability 0, space 0, times 0 [ 31.461889] CPU: 1 PID: 8015 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0 [ 31.469746] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 31.479071] Call Trace: [ 31.481636] dump_stack+0x1b2/0x281 [ 31.485250] should_fail.cold+0x10a/0x149 [ 31.489371] ? debug_object_activate+0x292/0x490 [ 31.494104] should_failslab+0xd6/0x130 [ 31.498049] __kmalloc+0x6d/0x400 [ 31.501476] ? tty_buffer_alloc+0xc0/0x270 [ 31.505686] tty_buffer_alloc+0xc0/0x270 [ 31.509734] __tty_buffer_request_room+0x12c/0x290 [ 31.514639] tty_insert_flip_string_fixed_flag+0x8b/0x210 [ 31.520150] tty_insert_flip_string_and_push_buffer+0x3e/0x160 [ 31.526094] pty_write+0xc3/0xf0 [ 31.529432] tty_put_char+0xfe/0x120 [ 31.533118] ? dev_match_devt+0x80/0x80 [ 31.537063] ? pty_write_room+0xa9/0xd0 [ 31.541006] ? ptmx_open+0x300/0x300 [ 31.544712] __process_echoes+0x48c/0x8c0 [ 31.548841] ? lock_downgrade+0x740/0x740 [ 31.552967] process_echoes+0xe9/0x1a0 [ 31.556828] n_tty_set_termios+0x60f/0xcc0 [ 31.561042] ? process_echoes+0x1a0/0x1a0 [ 31.565161] tty_set_termios+0x5d5/0x810 [ 31.569195] ? tty_wait_until_sent+0x470/0x470 [ 31.573754] ? n_tty_packet_mode_flush+0xe/0x170 [ 31.578487] ? n_tty_close+0x1f0/0x1f0 [ 31.582349] set_termios.part.0+0x244/0x3f0 [ 31.586903] ? set_termiox+0x280/0x280 [ 31.590760] ? unwind_next_frame+0x404/0x17d0 [ 31.595227] tty_mode_ioctl+0x7fc/0xa80 [ 31.599178] ? get_termio+0x240/0x240 [ 31.602963] ? __ldsem_down_read_nested+0x91/0x610 [ 31.607866] ? __ldsem_down_read_nested+0xb0/0x610 [ 31.612768] ? _kstrtoull+0x1f2/0x450 [ 31.616537] ? __ldsem_down_write_nested+0x700/0x700 [ 31.621613] n_tty_ioctl_helper+0x44/0x350 [ 31.625819] n_tty_ioctl+0x47/0x2e0 [ 31.629421] tty_ioctl+0x5af/0x1430 [ 31.633021] ? n_tty_poll+0x7d0/0x7d0 [ 31.636791] ? tty_fasync+0x2c0/0x2c0 [ 31.640562] ? proc_fail_nth_write+0x7b/0x180 [ 31.645071] ? trace_hardirqs_on+0x10/0x10 [ 31.649292] ? fsnotify+0x974/0x11b0 [ 31.652994] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 31.657902] ? debug_check_no_obj_freed+0x2c0/0x680 [ 31.662908] ? tty_fasync+0x2c0/0x2c0 [ 31.666683] do_vfs_ioctl+0x75a/0xff0 [ 31.670544] ? lock_acquire+0x170/0x3f0 [ 31.674490] ? ioctl_preallocate+0x1a0/0x1a0 [ 31.678872] ? __fget+0x265/0x3e0 [ 31.682297] ? do_vfs_ioctl+0xff0/0xff0 [ 31.686243] ? security_file_ioctl+0x83/0xb0 [ 31.690621] SyS_ioctl+0x7f/0xb0 [ 31.693958] ? do_vfs_ioctl+0xff0/0xff0 [ 31.697902] do_syscall_64+0x1d5/0x640 executing program [ 31.701764] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 31.765567] FAULT_INJECTION: forcing a failure. [ 31.765567] name failslab, interval 1, probability 0, space 0, times 0 [ 31.776752] CPU: 1 PID: 8018 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0 [ 31.784601] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 31.793926] Call Trace: [ 31.796488] dump_stack+0x1b2/0x281 [ 31.800089] should_fail.cold+0x10a/0x149 [ 31.804211] should_failslab+0xd6/0x130 [ 31.808157] __kmalloc+0x6d/0x400 [ 31.811581] ? tty_buffer_alloc+0xc0/0x270 [ 31.815787] tty_buffer_alloc+0xc0/0x270 [ 31.819822] __tty_buffer_request_room+0x12c/0x290 [ 31.824730] tty_insert_flip_string_fixed_flag+0x8b/0x210 [ 31.830249] tty_insert_flip_string_and_push_buffer+0x3e/0x160 [ 31.836193] pty_write+0xc3/0xf0 [ 31.839535] tty_put_char+0xfe/0x120 [ 31.843219] ? dev_match_devt+0x80/0x80 [ 31.847165] ? pty_write_room+0xa9/0xd0 [ 31.851112] ? ptmx_open+0x300/0x300 [ 31.854799] __process_echoes+0x48c/0x8c0 [ 31.858919] ? lock_downgrade+0x740/0x740 [ 31.863042] process_echoes+0xe9/0x1a0 [ 31.866902] n_tty_set_termios+0x60f/0xcc0 [ 31.871112] ? process_echoes+0x1a0/0x1a0 [ 31.875241] tty_set_termios+0x5d5/0x810 [ 31.879276] ? tty_wait_until_sent+0x470/0x470 [ 31.883838] ? n_tty_packet_mode_flush+0xe/0x170 [ 31.888566] ? n_tty_close+0x1f0/0x1f0 [ 31.892425] set_termios.part.0+0x244/0x3f0 [ 31.896725] ? set_termiox+0x280/0x280 [ 31.900587] ? unwind_next_frame+0x404/0x17d0 [ 31.905061] tty_mode_ioctl+0x7fc/0xa80 [ 31.909007] ? get_termio+0x240/0x240 [ 31.912781] ? __ldsem_down_read_nested+0x91/0x610 [ 31.917682] ? __ldsem_down_read_nested+0xb0/0x610 [ 31.922584] ? _kstrtoull+0x1f2/0x450 [ 31.926357] ? __ldsem_down_write_nested+0x700/0x700 [ 31.931434] n_tty_ioctl_helper+0x44/0x350 [ 31.935642] n_tty_ioctl+0x47/0x2e0 [ 31.939243] tty_ioctl+0x5af/0x1430 [ 31.942841] ? n_tty_poll+0x7d0/0x7d0 [ 31.946613] ? tty_fasync+0x2c0/0x2c0 [ 31.950386] ? proc_fail_nth_write+0x7b/0x180 [ 31.954855] ? trace_hardirqs_on+0x10/0x10 [ 31.959061] ? fsnotify+0x974/0x11b0 [ 31.962746] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 31.967648] ? debug_check_no_obj_freed+0x2c0/0x680 [ 31.972635] ? tty_fasync+0x2c0/0x2c0 [ 31.976408] do_vfs_ioctl+0x75a/0xff0 [ 31.980181] ? lock_acquire+0x170/0x3f0 [ 31.984125] ? ioctl_preallocate+0x1a0/0x1a0 [ 31.988505] ? __fget+0x265/0x3e0 [ 31.991935] ? do_vfs_ioctl+0xff0/0xff0 [ 31.995881] ? security_file_ioctl+0x83/0xb0 [ 32.000459] SyS_ioctl+0x7f/0xb0 [ 32.003795] ? do_vfs_ioctl+0xff0/0xff0 [ 32.007741] do_syscall_64+0x1d5/0x640 [ 32.011602] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 executing program [ 32.074824] FAULT_INJECTION: forcing a failure. [ 32.074824] name failslab, interval 1, probability 0, space 0, times 0 [ 32.086015] CPU: 1 PID: 8021 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0 [ 32.093867] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 32.103281] Call Trace: [ 32.105852] dump_stack+0x1b2/0x281 [ 32.109455] should_fail.cold+0x10a/0x149 [ 32.113580] ? debug_object_activate+0x292/0x490 [ 32.118309] should_failslab+0xd6/0x130 [ 32.122256] __kmalloc+0x6d/0x400 [ 32.125681] ? tty_buffer_alloc+0xc0/0x270 [ 32.129897] tty_buffer_alloc+0xc0/0x270 [ 32.133941] __tty_buffer_request_room+0x12c/0x290 [ 32.138849] tty_insert_flip_string_fixed_flag+0x8b/0x210 [ 32.144361] tty_insert_flip_string_and_push_buffer+0x3e/0x160 [ 32.150304] pty_write+0xc3/0xf0 [ 32.153651] tty_put_char+0xfe/0x120 [ 32.157338] ? dev_match_devt+0x80/0x80 [ 32.161284] ? pty_write_room+0xa9/0xd0 [ 32.165230] ? ptmx_open+0x300/0x300 [ 32.168919] __process_echoes+0x48c/0x8c0 [ 32.173047] ? lock_downgrade+0x740/0x740 [ 32.177181] process_echoes+0xe9/0x1a0 [ 32.181046] n_tty_set_termios+0x60f/0xcc0 [ 32.185253] ? process_echoes+0x1a0/0x1a0 [ 32.189372] tty_set_termios+0x5d5/0x810 [ 32.193408] ? tty_wait_until_sent+0x470/0x470 [ 32.197977] ? n_tty_packet_mode_flush+0xe/0x170 [ 32.202707] ? n_tty_close+0x1f0/0x1f0 [ 32.206566] set_termios.part.0+0x244/0x3f0 [ 32.210859] ? set_termiox+0x280/0x280 [ 32.214721] ? unwind_next_frame+0x404/0x17d0 [ 32.219190] tty_mode_ioctl+0x7fc/0xa80 [ 32.223136] ? get_termio+0x240/0x240 [ 32.226916] ? __ldsem_down_read_nested+0x91/0x610 [ 32.231819] ? __ldsem_down_read_nested+0xb0/0x610 [ 32.236728] ? _kstrtoull+0x1f2/0x450 [ 32.240677] ? __ldsem_down_write_nested+0x700/0x700 [ 32.245754] n_tty_ioctl_helper+0x44/0x350 [ 32.249965] n_tty_ioctl+0x47/0x2e0 [ 32.253570] tty_ioctl+0x5af/0x1430 [ 32.257173] ? n_tty_poll+0x7d0/0x7d0 [ 32.260958] ? tty_fasync+0x2c0/0x2c0 [ 32.264731] ? proc_fail_nth_write+0x7b/0x180 [ 32.269200] ? trace_hardirqs_on+0x10/0x10 [ 32.273415] ? fsnotify+0x974/0x11b0 [ 32.277102] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 32.282003] ? debug_check_no_obj_freed+0x2c0/0x680 [ 32.287003] ? tty_fasync+0x2c0/0x2c0 [ 32.290778] do_vfs_ioctl+0x75a/0xff0 [ 32.294561] ? lock_acquire+0x170/0x3f0 [ 32.298512] ? ioctl_preallocate+0x1a0/0x1a0 [ 32.302898] ? __fget+0x265/0x3e0 [ 32.306331] ? do_vfs_ioctl+0xff0/0xff0 [ 32.310282] ? security_file_ioctl+0x83/0xb0 [ 32.314664] SyS_ioctl+0x7f/0xb0 [ 32.318011] ? do_vfs_ioctl+0xff0/0xff0 [ 32.321962] do_syscall_64+0x1d5/0x640 executing program [ 32.325836] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 32.389395] FAULT_INJECTION: forcing a failure. [ 32.389395] name failslab, interval 1, probability 0, space 0, times 0 [ 32.400587] CPU: 0 PID: 8026 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0 [ 32.408441] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 32.417768] Call Trace: [ 32.420340] dump_stack+0x1b2/0x281 [ 32.423951] should_fail.cold+0x10a/0x149 [ 32.428081] ? debug_object_activate+0x292/0x490 [ 32.432816] should_failslab+0xd6/0x130 [ 32.436761] __kmalloc+0x6d/0x400 [ 32.440187] ? tty_buffer_alloc+0xc0/0x270 [ 32.444570] tty_buffer_alloc+0xc0/0x270 [ 32.448606] __tty_buffer_request_room+0x12c/0x290 [ 32.453508] tty_insert_flip_string_fixed_flag+0x8b/0x210 [ 32.459018] tty_insert_flip_string_and_push_buffer+0x3e/0x160 [ 32.464970] pty_write+0xc3/0xf0 [ 32.468310] tty_put_char+0xfe/0x120 [ 32.471998] ? dev_match_devt+0x80/0x80 [ 32.475947] ? pty_write_room+0xa9/0xd0 [ 32.479907] ? ptmx_open+0x300/0x300 [ 32.483598] __process_echoes+0x48c/0x8c0 [ 32.487723] ? lock_downgrade+0x740/0x740 [ 32.491843] process_echoes+0xe9/0x1a0 [ 32.495707] n_tty_set_termios+0x60f/0xcc0 [ 32.499914] ? process_echoes+0x1a0/0x1a0 [ 32.504038] tty_set_termios+0x5d5/0x810 [ 32.508072] ? tty_wait_until_sent+0x470/0x470 [ 32.512633] ? n_tty_packet_mode_flush+0xe/0x170 [ 32.517367] ? n_tty_close+0x1f0/0x1f0 [ 32.521224] set_termios.part.0+0x244/0x3f0 [ 32.525519] ? set_termiox+0x280/0x280 [ 32.529377] ? unwind_next_frame+0x404/0x17d0 [ 32.533843] tty_mode_ioctl+0x7fc/0xa80 [ 32.537798] ? get_termio+0x240/0x240 [ 32.541577] ? __ldsem_down_read_nested+0x91/0x610 [ 32.546478] ? __ldsem_down_read_nested+0xb0/0x610 [ 32.551387] ? _kstrtoull+0x1f2/0x450 [ 32.555162] ? __ldsem_down_write_nested+0x700/0x700 [ 32.560249] n_tty_ioctl_helper+0x44/0x350 [ 32.564464] n_tty_ioctl+0x47/0x2e0 [ 32.568075] tty_ioctl+0x5af/0x1430 [ 32.571679] ? n_tty_poll+0x7d0/0x7d0 [ 32.575463] ? tty_fasync+0x2c0/0x2c0 [ 32.579244] ? proc_fail_nth_write+0x7b/0x180 [ 32.583722] ? trace_hardirqs_on+0x10/0x10 [ 32.587933] ? fsnotify+0x974/0x11b0 [ 32.591621] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 32.596539] ? debug_check_no_obj_freed+0x2c0/0x680 [ 32.601529] ? tty_fasync+0x2c0/0x2c0 [ 32.605303] do_vfs_ioctl+0x75a/0xff0 [ 32.609089] ? lock_acquire+0x170/0x3f0 [ 32.613047] ? ioctl_preallocate+0x1a0/0x1a0 [ 32.617431] ? __fget+0x265/0x3e0 [ 32.620871] ? do_vfs_ioctl+0xff0/0xff0 [ 32.624824] ? security_file_ioctl+0x83/0xb0 [ 32.629209] SyS_ioctl+0x7f/0xb0 [ 32.632548] ? do_vfs_ioctl+0xff0/0xff0 [ 32.636494] do_syscall_64+0x1d5/0x640 executing program [ 32.640354] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 32.709129] FAULT_INJECTION: forcing a failure. [ 32.709129] name failslab, interval 1, probability 0, space 0, times 0 [ 32.720321] CPU: 1 PID: 8029 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0 [ 32.728171] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 32.737498] Call Trace: [ 32.740061] dump_stack+0x1b2/0x281 [ 32.743662] should_fail.cold+0x10a/0x149 [ 32.747795] ? debug_object_activate+0x292/0x490 [ 32.752528] should_failslab+0xd6/0x130 [ 32.756487] __kmalloc+0x6d/0x400 [ 32.759945] ? tty_buffer_alloc+0xc0/0x270 [ 32.764154] tty_buffer_alloc+0xc0/0x270 [ 32.768188] __tty_buffer_request_room+0x12c/0x290 [ 32.773095] tty_insert_flip_string_fixed_flag+0x8b/0x210 [ 32.778617] tty_insert_flip_string_and_push_buffer+0x3e/0x160 [ 32.784563] pty_write+0xc3/0xf0 [ 32.787906] tty_put_char+0xfe/0x120 [ 32.791591] ? dev_match_devt+0x80/0x80 [ 32.795537] ? pty_write_room+0xa9/0xd0 [ 32.799484] ? ptmx_open+0x300/0x300 [ 32.803168] __process_echoes+0x48c/0x8c0 [ 32.807299] ? lock_downgrade+0x740/0x740 [ 32.811421] process_echoes+0xe9/0x1a0 [ 32.815284] n_tty_set_termios+0x60f/0xcc0 [ 32.819668] ? process_echoes+0x1a0/0x1a0 [ 32.823790] tty_set_termios+0x5d5/0x810 [ 32.827826] ? tty_wait_until_sent+0x470/0x470 [ 32.832384] ? n_tty_packet_mode_flush+0xe/0x170 [ 32.837115] ? n_tty_close+0x1f0/0x1f0 [ 32.840972] set_termios.part.0+0x244/0x3f0 [ 32.845281] ? set_termiox+0x280/0x280 [ 32.849143] ? unwind_next_frame+0x404/0x17d0 [ 32.853616] tty_mode_ioctl+0x7fc/0xa80 [ 32.857567] ? get_termio+0x240/0x240 [ 32.861340] ? __ldsem_down_read_nested+0x91/0x610 [ 32.866245] ? __ldsem_down_read_nested+0xb0/0x610 [ 32.871154] ? _kstrtoull+0x1f2/0x450 [ 32.874929] ? __ldsem_down_write_nested+0x700/0x700 [ 32.880010] n_tty_ioctl_helper+0x44/0x350 [ 32.884218] n_tty_ioctl+0x47/0x2e0 [ 32.887819] tty_ioctl+0x5af/0x1430 [ 32.891419] ? n_tty_poll+0x7d0/0x7d0 [ 32.895194] ? tty_fasync+0x2c0/0x2c0 [ 32.898969] ? proc_fail_nth_write+0x7b/0x180 [ 32.903437] ? trace_hardirqs_on+0x10/0x10 [ 32.907644] ? fsnotify+0x974/0x11b0 [ 32.911328] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 32.916229] ? debug_check_no_obj_freed+0x2c0/0x680 [ 32.921230] ? tty_fasync+0x2c0/0x2c0 [ 32.925002] do_vfs_ioctl+0x75a/0xff0 [ 32.928775] ? lock_acquire+0x170/0x3f0 [ 32.932720] ? ioctl_preallocate+0x1a0/0x1a0 [ 32.937101] ? __fget+0x265/0x3e0 [ 32.940525] ? do_vfs_ioctl+0xff0/0xff0 [ 32.944472] ? security_file_ioctl+0x83/0xb0 [ 32.948857] SyS_ioctl+0x7f/0xb0 [ 32.952197] ? do_vfs_ioctl+0xff0/0xff0 [ 32.956143] do_syscall_64+0x1d5/0x640 executing program [ 32.960005] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 33.022891] FAULT_INJECTION: forcing a failure. [ 33.022891] name failslab, interval 1, probability 0, space 0, times 0 [ 33.034160] CPU: 0 PID: 8032 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0 [ 33.042012] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 33.051337] Call Trace: [ 33.053901] dump_stack+0x1b2/0x281 [ 33.057500] should_fail.cold+0x10a/0x149 [ 33.061621] ? debug_object_activate+0x292/0x490 [ 33.066348] should_failslab+0xd6/0x130 [ 33.070300] __kmalloc+0x6d/0x400 [ 33.073741] ? tty_buffer_alloc+0xc0/0x270 [ 33.077958] tty_buffer_alloc+0xc0/0x270 [ 33.081998] __tty_buffer_request_room+0x12c/0x290 [ 33.086903] tty_insert_flip_string_fixed_flag+0x8b/0x210 [ 33.092415] tty_insert_flip_string_and_push_buffer+0x3e/0x160 [ 33.098359] pty_write+0xc3/0xf0 [ 33.101700] tty_put_char+0xfe/0x120 [ 33.105392] ? dev_match_devt+0x80/0x80 [ 33.109344] ? pty_write_room+0xa9/0xd0 [ 33.113290] ? ptmx_open+0x300/0x300 [ 33.116986] __process_echoes+0x48c/0x8c0 [ 33.121196] ? lock_downgrade+0x740/0x740 [ 33.125316] process_echoes+0xe9/0x1a0 [ 33.129188] n_tty_set_termios+0x60f/0xcc0 [ 33.133394] ? process_echoes+0x1a0/0x1a0 [ 33.137518] tty_set_termios+0x5d5/0x810 [ 33.141553] ? tty_wait_until_sent+0x470/0x470 [ 33.146106] ? n_tty_packet_mode_flush+0xe/0x170 [ 33.150834] ? n_tty_close+0x1f0/0x1f0 [ 33.154694] set_termios.part.0+0x244/0x3f0 [ 33.158986] ? set_termiox+0x280/0x280 [ 33.162845] ? unwind_next_frame+0x404/0x17d0 [ 33.167324] tty_mode_ioctl+0x7fc/0xa80 [ 33.171273] ? get_termio+0x240/0x240 [ 33.175051] ? __ldsem_down_read_nested+0x91/0x610 [ 33.179990] ? __ldsem_down_read_nested+0xb0/0x610 [ 33.184913] ? _kstrtoull+0x1f2/0x450 [ 33.188693] ? __ldsem_down_write_nested+0x700/0x700 [ 33.193773] n_tty_ioctl_helper+0x44/0x350 [ 33.197980] n_tty_ioctl+0x47/0x2e0 [ 33.201581] tty_ioctl+0x5af/0x1430 [ 33.205179] ? n_tty_poll+0x7d0/0x7d0 [ 33.208949] ? tty_fasync+0x2c0/0x2c0 [ 33.212721] ? proc_fail_nth_write+0x7b/0x180 [ 33.217221] ? trace_hardirqs_on+0x10/0x10 [ 33.221427] ? fsnotify+0x974/0x11b0 [ 33.225112] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 33.230013] ? debug_check_no_obj_freed+0x2c0/0x680 [ 33.235003] ? tty_fasync+0x2c0/0x2c0 [ 33.238778] do_vfs_ioctl+0x75a/0xff0 [ 33.242552] ? lock_acquire+0x170/0x3f0 [ 33.246497] ? ioctl_preallocate+0x1a0/0x1a0 [ 33.250876] ? __fget+0x265/0x3e0 [ 33.254300] ? do_vfs_ioctl+0xff0/0xff0 [ 33.258248] ? security_file_ioctl+0x83/0xb0 [ 33.262628] SyS_ioctl+0x7f/0xb0 [ 33.265968] ? do_vfs_ioctl+0xff0/0xff0 [ 33.269920] do_syscall_64+0x1d5/0x640 executing program [ 33.273784] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 33.335962] FAULT_INJECTION: forcing a failure. [ 33.335962] name failslab, interval 1, probability 0, space 0, times 0 [ 33.347150] CPU: 1 PID: 8035 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0 [ 33.355007] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 33.364342] Call Trace: [ 33.366910] dump_stack+0x1b2/0x281 [ 33.370519] should_fail.cold+0x10a/0x149 [ 33.374648] ? debug_object_activate+0x292/0x490 [ 33.379376] should_failslab+0xd6/0x130 [ 33.383324] __kmalloc+0x6d/0x400 [ 33.386749] ? tty_buffer_alloc+0xc0/0x270 [ 33.390968] tty_buffer_alloc+0xc0/0x270 [ 33.395009] __tty_buffer_request_room+0x12c/0x290 [ 33.399920] tty_insert_flip_string_fixed_flag+0x8b/0x210 [ 33.405434] tty_insert_flip_string_and_push_buffer+0x3e/0x160 [ 33.411382] pty_write+0xc3/0xf0 [ 33.414723] tty_put_char+0xfe/0x120 [ 33.418408] ? dev_match_devt+0x80/0x80 [ 33.422353] ? pty_write_room+0xa9/0xd0 [ 33.426346] ? ptmx_open+0x300/0x300 [ 33.430042] __process_echoes+0x48c/0x8c0 [ 33.434168] ? lock_downgrade+0x740/0x740 [ 33.438287] process_echoes+0xe9/0x1a0 [ 33.442150] n_tty_set_termios+0x60f/0xcc0 [ 33.446355] ? process_echoes+0x1a0/0x1a0 [ 33.450476] tty_set_termios+0x5d5/0x810 [ 33.454510] ? tty_wait_until_sent+0x470/0x470 [ 33.459062] ? n_tty_packet_mode_flush+0xe/0x170 [ 33.463790] ? n_tty_close+0x1f0/0x1f0 [ 33.467652] set_termios.part.0+0x244/0x3f0 [ 33.471946] ? set_termiox+0x280/0x280 [ 33.475806] ? unwind_next_frame+0x404/0x17d0 [ 33.480282] tty_mode_ioctl+0x7fc/0xa80 [ 33.484319] ? get_termio+0x240/0x240 [ 33.488096] ? __ldsem_down_read_nested+0x91/0x610 [ 33.492997] ? __ldsem_down_read_nested+0xb0/0x610 [ 33.497906] ? _kstrtoull+0x1f2/0x450 [ 33.501691] ? __ldsem_down_write_nested+0x700/0x700 [ 33.506855] n_tty_ioctl_helper+0x44/0x350 [ 33.511063] n_tty_ioctl+0x47/0x2e0 [ 33.514662] tty_ioctl+0x5af/0x1430 [ 33.518264] ? n_tty_poll+0x7d0/0x7d0 [ 33.522035] ? tty_fasync+0x2c0/0x2c0 [ 33.525810] ? proc_fail_nth_write+0x7b/0x180 [ 33.530289] ? trace_hardirqs_on+0x10/0x10 [ 33.534505] ? fsnotify+0x974/0x11b0 [ 33.538284] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 33.543187] ? debug_check_no_obj_freed+0x2c0/0x680 [ 33.548182] ? tty_fasync+0x2c0/0x2c0 [ 33.551963] do_vfs_ioctl+0x75a/0xff0 [ 33.555776] ? lock_acquire+0x170/0x3f0 [ 33.559768] ? ioctl_preallocate+0x1a0/0x1a0 [ 33.564165] ? __fget+0x265/0x3e0 [ 33.567600] ? do_vfs_ioctl+0xff0/0xff0 [ 33.571561] ? security_file_ioctl+0x83/0xb0 [ 33.575953] SyS_ioctl+0x7f/0xb0 [ 33.579298] ? do_vfs_ioctl+0xff0/0xff0 [ 33.583248] do_syscall_64+0x1d5/0x640 executing program [ 33.587113] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 33.650609] FAULT_INJECTION: forcing a failure. [ 33.650609] name failslab, interval 1, probability 0, space 0, times 0 [ 33.661801] CPU: 1 PID: 8038 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0 [ 33.669659] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 33.678986] Call Trace: [ 33.681551] dump_stack+0x1b2/0x281 [ 33.685154] should_fail.cold+0x10a/0x149 [ 33.689275] ? debug_object_activate+0x292/0x490 [ 33.694004] should_failslab+0xd6/0x130 [ 33.697952] __kmalloc+0x6d/0x400 [ 33.701381] ? tty_buffer_alloc+0xc0/0x270 [ 33.705588] tty_buffer_alloc+0xc0/0x270 [ 33.709620] __tty_buffer_request_room+0x12c/0x290 [ 33.714524] tty_insert_flip_string_fixed_flag+0x8b/0x210 [ 33.720069] tty_insert_flip_string_and_push_buffer+0x3e/0x160 [ 33.726013] pty_write+0xc3/0xf0 [ 33.729353] tty_put_char+0xfe/0x120 [ 33.733036] ? dev_match_devt+0x80/0x80 [ 33.736981] ? pty_write_room+0xa9/0xd0 [ 33.740926] ? ptmx_open+0x300/0x300 [ 33.744610] __process_echoes+0x48c/0x8c0 [ 33.748730] ? lock_downgrade+0x740/0x740 [ 33.752848] process_echoes+0xe9/0x1a0 [ 33.756705] n_tty_set_termios+0x60f/0xcc0 [ 33.760916] ? process_echoes+0x1a0/0x1a0 [ 33.765035] tty_set_termios+0x5d5/0x810 [ 33.769068] ? tty_wait_until_sent+0x470/0x470 [ 33.773623] ? n_tty_packet_mode_flush+0xe/0x170 [ 33.778351] ? n_tty_close+0x1f0/0x1f0 [ 33.782207] set_termios.part.0+0x244/0x3f0 [ 33.786499] ? set_termiox+0x280/0x280 [ 33.790360] ? unwind_next_frame+0x404/0x17d0 [ 33.794842] tty_mode_ioctl+0x7fc/0xa80 [ 33.798795] ? get_termio+0x240/0x240 [ 33.802584] ? __ldsem_down_read_nested+0x91/0x610 [ 33.807487] ? __ldsem_down_read_nested+0xb0/0x610 [ 33.812387] ? _kstrtoull+0x1f2/0x450 [ 33.816159] ? __ldsem_down_write_nested+0x700/0x700 [ 33.821234] n_tty_ioctl_helper+0x44/0x350 [ 33.825441] n_tty_ioctl+0x47/0x2e0 [ 33.829042] tty_ioctl+0x5af/0x1430 [ 33.832644] ? n_tty_poll+0x7d0/0x7d0 [ 33.836418] ? tty_fasync+0x2c0/0x2c0 [ 33.840190] ? proc_fail_nth_write+0x7b/0x180 [ 33.844659] ? trace_hardirqs_on+0x10/0x10 [ 33.848881] ? fsnotify+0x974/0x11b0 [ 33.852585] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 33.857499] ? debug_check_no_obj_freed+0x2c0/0x680 [ 33.862494] ? tty_fasync+0x2c0/0x2c0 [ 33.866271] do_vfs_ioctl+0x75a/0xff0 [ 33.870047] ? lock_acquire+0x170/0x3f0 [ 33.873997] ? ioctl_preallocate+0x1a0/0x1a0 [ 33.878386] ? __fget+0x265/0x3e0 [ 33.881811] ? do_vfs_ioctl+0xff0/0xff0 [ 33.885764] ? security_file_ioctl+0x83/0xb0 [ 33.890145] SyS_ioctl+0x7f/0xb0 [ 33.893486] ? do_vfs_ioctl+0xff0/0xff0 [ 33.897433] do_syscall_64+0x1d5/0x640 executing program [ 33.901296] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 33.970453] FAULT_INJECTION: forcing a failure. [ 33.970453] name failslab, interval 1, probability 0, space 0, times 0 [ 33.981650] CPU: 1 PID: 8041 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0 [ 33.989505] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 33.998942] Call Trace: [ 34.001508] dump_stack+0x1b2/0x281 [ 34.005111] should_fail.cold+0x10a/0x149 [ 34.009235] ? debug_object_activate+0x292/0x490 [ 34.013967] should_failslab+0xd6/0x130 [ 34.017916] __kmalloc+0x6d/0x400 [ 34.021346] ? tty_buffer_alloc+0xc0/0x270 [ 34.025568] tty_buffer_alloc+0xc0/0x270 [ 34.029608] __tty_buffer_request_room+0x12c/0x290 [ 34.034516] tty_insert_flip_string_fixed_flag+0x8b/0x210 [ 34.040032] tty_insert_flip_string_and_push_buffer+0x3e/0x160 [ 34.045978] pty_write+0xc3/0xf0 [ 34.049320] tty_put_char+0xfe/0x120 [ 34.053017] ? dev_match_devt+0x80/0x80 [ 34.056971] ? pty_write_room+0xa9/0xd0 [ 34.060920] ? ptmx_open+0x300/0x300 [ 34.064610] __process_echoes+0x48c/0x8c0 [ 34.068733] ? lock_downgrade+0x740/0x740 [ 34.072855] process_echoes+0xe9/0x1a0 [ 34.076717] n_tty_set_termios+0x60f/0xcc0 [ 34.080924] ? process_echoes+0x1a0/0x1a0 [ 34.085046] tty_set_termios+0x5d5/0x810 [ 34.089081] ? tty_wait_until_sent+0x470/0x470 [ 34.093639] ? n_tty_packet_mode_flush+0xe/0x170 [ 34.098370] ? n_tty_close+0x1f0/0x1f0 [ 34.102230] set_termios.part.0+0x244/0x3f0 [ 34.106523] ? set_termiox+0x280/0x280 [ 34.110382] ? unwind_next_frame+0x404/0x17d0 [ 34.114850] tty_mode_ioctl+0x7fc/0xa80 [ 34.118808] ? get_termio+0x240/0x240 [ 34.122588] ? __ldsem_down_read_nested+0x91/0x610 [ 34.127492] ? __ldsem_down_read_nested+0xb0/0x610 [ 34.132397] ? _kstrtoull+0x1f2/0x450 [ 34.136174] ? __ldsem_down_write_nested+0x700/0x700 [ 34.141255] n_tty_ioctl_helper+0x44/0x350 [ 34.145465] n_tty_ioctl+0x47/0x2e0 [ 34.149064] tty_ioctl+0x5af/0x1430 [ 34.152660] ? n_tty_poll+0x7d0/0x7d0 [ 34.156434] ? tty_fasync+0x2c0/0x2c0 [ 34.160208] ? proc_fail_nth_write+0x7b/0x180 [ 34.164678] ? trace_hardirqs_on+0x10/0x10 [ 34.168975] ? fsnotify+0x974/0x11b0 [ 34.172659] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 34.177560] ? debug_check_no_obj_freed+0x2c0/0x680 [ 34.182555] ? tty_fasync+0x2c0/0x2c0 [ 34.186328] do_vfs_ioctl+0x75a/0xff0 [ 34.190114] ? lock_acquire+0x170/0x3f0 [ 34.194066] ? ioctl_preallocate+0x1a0/0x1a0 [ 34.198448] ? __fget+0x265/0x3e0 [ 34.201874] ? do_vfs_ioctl+0xff0/0xff0 [ 34.205911] ? security_file_ioctl+0x83/0xb0 [ 34.210290] SyS_ioctl+0x7f/0xb0 [ 34.213626] ? do_vfs_ioctl+0xff0/0xff0 [ 34.217577] do_syscall_64+0x1d5/0x640 executing program [ 34.221454] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 34.296418] FAULT_INJECTION: forcing a failure. [ 34.296418] name failslab, interval 1, probability 0, space 0, times 0 [ 34.307615] CPU: 0 PID: 8044 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0 [ 34.315465] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 34.324877] Call Trace: [ 34.327439] dump_stack+0x1b2/0x281 [ 34.331043] should_fail.cold+0x10a/0x149 [ 34.335211] ? debug_object_activate+0x292/0x490 [ 34.339941] should_failslab+0xd6/0x130 [ 34.343897] __kmalloc+0x6d/0x400 [ 34.347325] ? tty_buffer_alloc+0xc0/0x270 [ 34.351534] tty_buffer_alloc+0xc0/0x270 [ 34.355566] __tty_buffer_request_room+0x12c/0x290 [ 34.360474] tty_insert_flip_string_fixed_flag+0x8b/0x210 [ 34.365996] tty_insert_flip_string_and_push_buffer+0x3e/0x160 [ 34.371941] pty_write+0xc3/0xf0 [ 34.375280] tty_put_char+0xfe/0x120 [ 34.378966] ? dev_match_devt+0x80/0x80 [ 34.382910] ? pty_write_room+0xa9/0xd0 [ 34.386855] ? ptmx_open+0x300/0x300 [ 34.390539] __process_echoes+0x48c/0x8c0 [ 34.394659] ? lock_downgrade+0x740/0x740 [ 34.398779] process_echoes+0xe9/0x1a0 [ 34.402643] n_tty_set_termios+0x60f/0xcc0 [ 34.406856] ? process_echoes+0x1a0/0x1a0 [ 34.410972] tty_set_termios+0x5d5/0x810 [ 34.415005] ? tty_wait_until_sent+0x470/0x470 [ 34.419559] ? n_tty_packet_mode_flush+0xe/0x170 [ 34.424285] ? n_tty_close+0x1f0/0x1f0 [ 34.428144] set_termios.part.0+0x244/0x3f0 [ 34.432462] ? set_termiox+0x280/0x280 [ 34.436321] ? unwind_next_frame+0x404/0x17d0 [ 34.440789] tty_mode_ioctl+0x7fc/0xa80 [ 34.444737] ? get_termio+0x240/0x240 [ 34.448521] ? __ldsem_down_read_nested+0x91/0x610 [ 34.453428] ? __ldsem_down_read_nested+0xb0/0x610 [ 34.458357] ? _kstrtoull+0x1f2/0x450 [ 34.462135] ? __ldsem_down_write_nested+0x700/0x700 [ 34.467210] n_tty_ioctl_helper+0x44/0x350 [ 34.471419] n_tty_ioctl+0x47/0x2e0 [ 34.475020] tty_ioctl+0x5af/0x1430 [ 34.478621] ? n_tty_poll+0x7d0/0x7d0 [ 34.482390] ? tty_fasync+0x2c0/0x2c0 [ 34.486162] ? proc_fail_nth_write+0x7b/0x180 [ 34.490645] ? trace_hardirqs_on+0x10/0x10 [ 34.494865] ? fsnotify+0x974/0x11b0 [ 34.498556] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 34.503459] ? debug_check_no_obj_freed+0x2c0/0x680 [ 34.508449] ? tty_fasync+0x2c0/0x2c0 [ 34.512223] do_vfs_ioctl+0x75a/0xff0 [ 34.516002] ? lock_acquire+0x170/0x3f0 [ 34.519949] ? ioctl_preallocate+0x1a0/0x1a0 [ 34.524332] ? __fget+0x265/0x3e0 [ 34.527755] ? do_vfs_ioctl+0xff0/0xff0 [ 34.531705] ? security_file_ioctl+0x83/0xb0 [ 34.536086] SyS_ioctl+0x7f/0xb0 [ 34.539425] ? do_vfs_ioctl+0xff0/0xff0 [ 34.543374] do_syscall_64+0x1d5/0x640 executing program [ 34.547324] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 34.609102] FAULT_INJECTION: forcing a failure. [ 34.609102] name failslab, interval 1, probability 0, space 0, times 0 [ 34.620300] CPU: 1 PID: 8047 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0 [ 34.628157] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 34.637488] Call Trace: [ 34.640054] dump_stack+0x1b2/0x281 [ 34.643656] should_fail.cold+0x10a/0x149 [ 34.647776] should_failslab+0xd6/0x130 [ 34.651723] __kmalloc+0x6d/0x400 [ 34.655164] ? tty_buffer_alloc+0xc0/0x270 [ 34.659379] tty_buffer_alloc+0xc0/0x270 [ 34.663420] __tty_buffer_request_room+0x12c/0x290 [ 34.668324] tty_insert_flip_string_fixed_flag+0x8b/0x210 [ 34.673839] tty_insert_flip_string_and_push_buffer+0x3e/0x160 [ 34.679787] pty_write+0xc3/0xf0 [ 34.683131] tty_put_char+0xfe/0x120 [ 34.686819] ? dev_match_devt+0x80/0x80 [ 34.690769] ? pty_write_room+0xa9/0xd0 [ 34.694726] ? ptmx_open+0x300/0x300 [ 34.698417] __process_echoes+0x48c/0x8c0 [ 34.702541] ? lock_downgrade+0x740/0x740 [ 34.706661] process_echoes+0xe9/0x1a0 [ 34.710521] n_tty_set_termios+0x60f/0xcc0 [ 34.714740] ? process_echoes+0x1a0/0x1a0 [ 34.718859] tty_set_termios+0x5d5/0x810 [ 34.722891] ? tty_wait_until_sent+0x470/0x470 [ 34.727447] ? n_tty_packet_mode_flush+0xe/0x170 [ 34.732182] ? n_tty_close+0x1f0/0x1f0 [ 34.736051] set_termios.part.0+0x244/0x3f0 [ 34.740356] ? set_termiox+0x280/0x280 [ 34.744219] ? unwind_next_frame+0x404/0x17d0 [ 34.748696] tty_mode_ioctl+0x7fc/0xa80 [ 34.752646] ? get_termio+0x240/0x240 [ 34.756421] ? __ldsem_down_read_nested+0x91/0x610 [ 34.761326] ? __ldsem_down_read_nested+0xb0/0x610 [ 34.766252] ? _kstrtoull+0x1f2/0x450 [ 34.770027] ? __ldsem_down_write_nested+0x700/0x700 [ 34.775103] n_tty_ioctl_helper+0x44/0x350 [ 34.779315] n_tty_ioctl+0x47/0x2e0 [ 34.782917] tty_ioctl+0x5af/0x1430 [ 34.786514] ? n_tty_poll+0x7d0/0x7d0 [ 34.790287] ? tty_fasync+0x2c0/0x2c0 [ 34.794064] ? proc_fail_nth_write+0x7b/0x180 [ 34.798531] ? trace_hardirqs_on+0x10/0x10 [ 34.802741] ? fsnotify+0x974/0x11b0 [ 34.806424] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 34.811913] ? debug_check_no_obj_freed+0x2c0/0x680 [ 34.816996] ? tty_fasync+0x2c0/0x2c0 [ 34.820771] do_vfs_ioctl+0x75a/0xff0 [ 34.824545] ? lock_acquire+0x170/0x3f0 [ 34.828493] ? ioctl_preallocate+0x1a0/0x1a0 [ 34.832876] ? __fget+0x265/0x3e0 [ 34.836311] ? do_vfs_ioctl+0xff0/0xff0 [ 34.840261] ? security_file_ioctl+0x83/0xb0 [ 34.844642] SyS_ioctl+0x7f/0xb0 [ 34.847983] ? do_vfs_ioctl+0xff0/0xff0 [ 34.851931] do_syscall_64+0x1d5/0x640 executing program [ 34.855799] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 34.919133] FAULT_INJECTION: forcing a failure. [ 34.919133] name failslab, interval 1, probability 0, space 0, times 0 [ 34.930330] CPU: 1 PID: 8050 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0 [ 34.938187] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 34.947514] Call Trace: [ 34.950083] dump_stack+0x1b2/0x281 [ 34.953686] should_fail.cold+0x10a/0x149 [ 34.957809] ? debug_object_activate+0x292/0x490 [ 34.962536] should_failslab+0xd6/0x130 [ 34.966484] __kmalloc+0x6d/0x400 [ 34.969915] ? tty_buffer_alloc+0xc0/0x270 [ 34.974126] tty_buffer_alloc+0xc0/0x270 [ 34.978161] __tty_buffer_request_room+0x12c/0x290 [ 34.983066] tty_insert_flip_string_fixed_flag+0x8b/0x210 [ 34.988581] tty_insert_flip_string_and_push_buffer+0x3e/0x160 [ 34.994535] pty_write+0xc3/0xf0 [ 34.997874] tty_put_char+0xfe/0x120 [ 35.001562] ? dev_match_devt+0x80/0x80 [ 35.005510] ? pty_write_room+0xa9/0xd0 [ 35.009454] ? ptmx_open+0x300/0x300 [ 35.013142] __process_echoes+0x48c/0x8c0 [ 35.017264] ? lock_downgrade+0x740/0x740 [ 35.021387] process_echoes+0xe9/0x1a0 [ 35.025250] n_tty_set_termios+0x60f/0xcc0 [ 35.029549] ? process_echoes+0x1a0/0x1a0 [ 35.033676] tty_set_termios+0x5d5/0x810 [ 35.037713] ? tty_wait_until_sent+0x470/0x470 [ 35.042269] ? n_tty_packet_mode_flush+0xe/0x170 [ 35.046999] ? n_tty_close+0x1f0/0x1f0 [ 35.050861] set_termios.part.0+0x244/0x3f0 [ 35.055157] ? set_termiox+0x280/0x280 [ 35.059018] ? unwind_next_frame+0x404/0x17d0 [ 35.063487] tty_mode_ioctl+0x7fc/0xa80 [ 35.067435] ? get_termio+0x240/0x240 [ 35.071208] ? __ldsem_down_read_nested+0x91/0x610 [ 35.076109] ? __ldsem_down_read_nested+0xb0/0x610 [ 35.081011] ? _kstrtoull+0x1f2/0x450 [ 35.084785] ? __ldsem_down_write_nested+0x700/0x700 [ 35.089863] n_tty_ioctl_helper+0x44/0x350 [ 35.094070] n_tty_ioctl+0x47/0x2e0 [ 35.097671] tty_ioctl+0x5af/0x1430 [ 35.101274] ? n_tty_poll+0x7d0/0x7d0 [ 35.105046] ? tty_fasync+0x2c0/0x2c0 [ 35.108821] ? proc_fail_nth_write+0x7b/0x180 [ 35.113290] ? trace_hardirqs_on+0x10/0x10 [ 35.117501] ? fsnotify+0x974/0x11b0 [ 35.121188] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 35.126089] ? debug_check_no_obj_freed+0x2c0/0x680 [ 35.131080] ? tty_fasync+0x2c0/0x2c0 [ 35.134854] do_vfs_ioctl+0x75a/0xff0 [ 35.138626] ? lock_acquire+0x170/0x3f0 [ 35.142573] ? ioctl_preallocate+0x1a0/0x1a0 [ 35.146966] ? __fget+0x265/0x3e0 [ 35.150395] ? do_vfs_ioctl+0xff0/0xff0 [ 35.154342] ? security_file_ioctl+0x83/0xb0 [ 35.158734] SyS_ioctl+0x7f/0xb0 [ 35.162167] ? do_vfs_ioctl+0xff0/0xff0 [ 35.166113] do_syscall_64+0x1d5/0x640 executing program [ 35.169977] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 35.239929] FAULT_INJECTION: forcing a failure. [ 35.239929] name failslab, interval 1, probability 0, space 0, times 0 [ 35.251195] CPU: 0 PID: 8053 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0 [ 35.259051] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 35.268381] Call Trace: [ 35.270953] dump_stack+0x1b2/0x281 [ 35.274565] should_fail.cold+0x10a/0x149 [ 35.278689] ? debug_object_activate+0x292/0x490 [ 35.283419] should_failslab+0xd6/0x130 [ 35.287369] __kmalloc+0x6d/0x400 [ 35.290799] ? tty_buffer_alloc+0xc0/0x270 [ 35.295013] tty_buffer_alloc+0xc0/0x270 [ 35.299055] __tty_buffer_request_room+0x12c/0x290 [ 35.303961] tty_insert_flip_string_fixed_flag+0x8b/0x210 [ 35.309503] tty_insert_flip_string_and_push_buffer+0x3e/0x160 [ 35.315451] pty_write+0xc3/0xf0 [ 35.318801] tty_put_char+0xfe/0x120 [ 35.322664] ? dev_match_devt+0x80/0x80 [ 35.326619] ? pty_write_room+0xa9/0xd0 [ 35.330574] ? ptmx_open+0x300/0x300 [ 35.334262] __process_echoes+0x48c/0x8c0 [ 35.338383] ? lock_downgrade+0x740/0x740 [ 35.342508] process_echoes+0xe9/0x1a0 [ 35.346368] n_tty_set_termios+0x60f/0xcc0 [ 35.350587] ? process_echoes+0x1a0/0x1a0 [ 35.354719] tty_set_termios+0x5d5/0x810 [ 35.358768] ? tty_wait_until_sent+0x470/0x470 [ 35.363330] ? n_tty_packet_mode_flush+0xe/0x170 [ 35.368069] ? n_tty_close+0x1f0/0x1f0 [ 35.371933] set_termios.part.0+0x244/0x3f0 [ 35.376234] ? set_termiox+0x280/0x280 [ 35.380098] ? unwind_next_frame+0x404/0x17d0 [ 35.384568] tty_mode_ioctl+0x7fc/0xa80 [ 35.388517] ? get_termio+0x240/0x240 [ 35.392294] ? __ldsem_down_read_nested+0x91/0x610 [ 35.397196] ? __ldsem_down_read_nested+0xb0/0x610 [ 35.402125] ? _kstrtoull+0x1f2/0x450 [ 35.405899] ? __ldsem_down_write_nested+0x700/0x700 [ 35.410982] n_tty_ioctl_helper+0x44/0x350 [ 35.415192] n_tty_ioctl+0x47/0x2e0 [ 35.418793] tty_ioctl+0x5af/0x1430 [ 35.422394] ? n_tty_poll+0x7d0/0x7d0 [ 35.426165] ? tty_fasync+0x2c0/0x2c0 [ 35.429948] ? proc_fail_nth_write+0x7b/0x180 [ 35.434418] ? trace_hardirqs_on+0x10/0x10 [ 35.438629] ? fsnotify+0x974/0x11b0 [ 35.442322] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 35.448041] ? debug_check_no_obj_freed+0x2c0/0x680 [ 35.453033] ? tty_fasync+0x2c0/0x2c0 [ 35.456808] do_vfs_ioctl+0x75a/0xff0 [ 35.460589] ? lock_acquire+0x170/0x3f0 [ 35.464633] ? ioctl_preallocate+0x1a0/0x1a0 [ 35.469014] ? __fget+0x265/0x3e0 [ 35.472445] ? do_vfs_ioctl+0xff0/0xff0 [ 35.476394] ? security_file_ioctl+0x83/0xb0 [ 35.480784] SyS_ioctl+0x7f/0xb0 [ 35.484136] ? do_vfs_ioctl+0xff0/0xff0 executing program [ 35.488087] do_syscall_64+0x1d5/0x640 [ 35.491950] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 35.553713] FAULT_INJECTION: forcing a failure. [ 35.553713] name failslab, interval 1, probability 0, space 0, times 0 [ 35.564912] CPU: 1 PID: 8056 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0 [ 35.572765] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 35.582094] Call Trace: [ 35.584660] dump_stack+0x1b2/0x281 [ 35.588264] should_fail.cold+0x10a/0x149 [ 35.592385] ? debug_object_activate+0x292/0x490 [ 35.597115] should_failslab+0xd6/0x130 [ 35.601153] __kmalloc+0x6d/0x400 [ 35.604581] ? tty_buffer_alloc+0xc0/0x270 [ 35.608788] tty_buffer_alloc+0xc0/0x270 [ 35.612822] __tty_buffer_request_room+0x12c/0x290 [ 35.617729] tty_insert_flip_string_fixed_flag+0x8b/0x210 [ 35.623245] tty_insert_flip_string_and_push_buffer+0x3e/0x160 [ 35.629190] pty_write+0xc3/0xf0 [ 35.632530] tty_put_char+0xfe/0x120 [ 35.636216] ? dev_match_devt+0x80/0x80 [ 35.640188] ? pty_write_room+0xa9/0xd0 [ 35.644135] ? ptmx_open+0x300/0x300 [ 35.647828] __process_echoes+0x48c/0x8c0 [ 35.651959] ? lock_downgrade+0x740/0x740 [ 35.656170] process_echoes+0xe9/0x1a0 [ 35.660035] n_tty_set_termios+0x60f/0xcc0 [ 35.664244] ? process_echoes+0x1a0/0x1a0 [ 35.668365] tty_set_termios+0x5d5/0x810 [ 35.672401] ? tty_wait_until_sent+0x470/0x470 [ 35.676956] ? n_tty_packet_mode_flush+0xe/0x170 [ 35.681684] ? n_tty_close+0x1f0/0x1f0 [ 35.685544] set_termios.part.0+0x244/0x3f0 [ 35.689838] ? set_termiox+0x280/0x280 [ 35.693701] ? unwind_next_frame+0x404/0x17d0 [ 35.698176] tty_mode_ioctl+0x7fc/0xa80 [ 35.702133] ? get_termio+0x240/0x240 [ 35.705921] ? __ldsem_down_read_nested+0x91/0x610 [ 35.710823] ? __ldsem_down_read_nested+0xb0/0x610 [ 35.715740] ? _kstrtoull+0x1f2/0x450 [ 35.719515] ? __ldsem_down_write_nested+0x700/0x700 [ 35.724592] n_tty_ioctl_helper+0x44/0x350 [ 35.728803] n_tty_ioctl+0x47/0x2e0 [ 35.732403] tty_ioctl+0x5af/0x1430 [ 35.736000] ? n_tty_poll+0x7d0/0x7d0 [ 35.739773] ? tty_fasync+0x2c0/0x2c0 [ 35.743547] ? proc_fail_nth_write+0x7b/0x180 [ 35.748018] ? trace_hardirqs_on+0x10/0x10 [ 35.752235] ? fsnotify+0x974/0x11b0 [ 35.755923] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 35.760827] ? debug_check_no_obj_freed+0x2c0/0x680 [ 35.765816] ? tty_fasync+0x2c0/0x2c0 [ 35.769616] do_vfs_ioctl+0x75a/0xff0 [ 35.773398] ? lock_acquire+0x170/0x3f0 [ 35.777372] ? ioctl_preallocate+0x1a0/0x1a0 [ 35.781756] ? __fget+0x265/0x3e0 [ 35.785188] ? do_vfs_ioctl+0xff0/0xff0 [ 35.789136] ? security_file_ioctl+0x83/0xb0 [ 35.793516] SyS_ioctl+0x7f/0xb0 [ 35.796856] ? do_vfs_ioctl+0xff0/0xff0 [ 35.800806] do_syscall_64+0x1d5/0x640 executing program [ 35.804673] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 35.868531] FAULT_INJECTION: forcing a failure. [ 35.868531] name failslab, interval 1, probability 0, space 0, times 0 [ 35.879726] CPU: 1 PID: 8061 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0 [ 35.887578] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 35.896906] Call Trace: [ 35.899470] dump_stack+0x1b2/0x281 [ 35.903074] should_fail.cold+0x10a/0x149 [ 35.907196] ? debug_object_activate+0x292/0x490 [ 35.911932] should_failslab+0xd6/0x130 [ 35.915885] __kmalloc+0x6d/0x400 [ 35.919313] ? tty_buffer_alloc+0xc0/0x270 [ 35.923526] tty_buffer_alloc+0xc0/0x270 [ 35.927562] __tty_buffer_request_room+0x12c/0x290 [ 35.932466] tty_insert_flip_string_fixed_flag+0x8b/0x210 [ 35.937997] tty_insert_flip_string_and_push_buffer+0x3e/0x160 [ 35.943945] pty_write+0xc3/0xf0 [ 35.947294] tty_put_char+0xfe/0x120 [ 35.951067] ? dev_match_devt+0x80/0x80 [ 35.955101] ? pty_write_room+0xa9/0xd0 [ 35.959045] ? ptmx_open+0x300/0x300 [ 35.962742] __process_echoes+0x48c/0x8c0 [ 35.966899] ? lock_downgrade+0x740/0x740 [ 35.971045] process_echoes+0xe9/0x1a0 [ 35.974908] n_tty_set_termios+0x60f/0xcc0 [ 35.979117] ? process_echoes+0x1a0/0x1a0 [ 35.983237] tty_set_termios+0x5d5/0x810 [ 35.987272] ? tty_wait_until_sent+0x470/0x470 [ 35.991827] ? n_tty_packet_mode_flush+0xe/0x170 [ 35.996555] ? n_tty_close+0x1f0/0x1f0 [ 36.000420] set_termios.part.0+0x244/0x3f0 [ 36.004720] ? set_termiox+0x280/0x280 [ 36.008599] ? unwind_next_frame+0x404/0x17d0 [ 36.013069] tty_mode_ioctl+0x7fc/0xa80 [ 36.017034] ? get_termio+0x240/0x240 [ 36.020809] ? __ldsem_down_read_nested+0x91/0x610 [ 36.025712] ? __ldsem_down_read_nested+0xb0/0x610 [ 36.030615] ? _kstrtoull+0x1f2/0x450 [ 36.034391] ? __ldsem_down_write_nested+0x700/0x700 [ 36.039469] n_tty_ioctl_helper+0x44/0x350 [ 36.043676] n_tty_ioctl+0x47/0x2e0 [ 36.047284] tty_ioctl+0x5af/0x1430 [ 36.050972] ? n_tty_poll+0x7d0/0x7d0 [ 36.054744] ? tty_fasync+0x2c0/0x2c0 [ 36.058543] ? proc_fail_nth_write+0x7b/0x180 [ 36.063017] ? trace_hardirqs_on+0x10/0x10 [ 36.067227] ? fsnotify+0x974/0x11b0 [ 36.071007] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 36.075907] ? debug_check_no_obj_freed+0x2c0/0x680 [ 36.080897] ? tty_fasync+0x2c0/0x2c0 [ 36.084672] do_vfs_ioctl+0x75a/0xff0 [ 36.088447] ? lock_acquire+0x170/0x3f0 [ 36.092395] ? ioctl_preallocate+0x1a0/0x1a0 [ 36.096798] ? __fget+0x265/0x3e0 [ 36.100225] ? do_vfs_ioctl+0xff0/0xff0 [ 36.104175] ? security_file_ioctl+0x83/0xb0 [ 36.108558] SyS_ioctl+0x7f/0xb0 [ 36.111899] ? do_vfs_ioctl+0xff0/0xff0 [ 36.115850] do_syscall_64+0x1d5/0x640 executing program [ 36.119712] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 36.182498] FAULT_INJECTION: forcing a failure. [ 36.182498] name failslab, interval 1, probability 0, space 0, times 0 [ 36.193693] CPU: 1 PID: 8064 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0 [ 36.201550] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 36.210899] Call Trace: [ 36.213467] dump_stack+0x1b2/0x281 [ 36.217091] should_fail.cold+0x10a/0x149 [ 36.221214] ? debug_object_activate+0x292/0x490 [ 36.225945] should_failslab+0xd6/0x130 [ 36.229895] __kmalloc+0x6d/0x400 [ 36.233325] ? tty_buffer_alloc+0xc0/0x270 [ 36.237532] tty_buffer_alloc+0xc0/0x270 [ 36.241569] __tty_buffer_request_room+0x12c/0x290 [ 36.246475] tty_insert_flip_string_fixed_flag+0x8b/0x210 [ 36.251999] tty_insert_flip_string_and_push_buffer+0x3e/0x160 [ 36.257947] pty_write+0xc3/0xf0 [ 36.261290] tty_put_char+0xfe/0x120 [ 36.264979] ? dev_match_devt+0x80/0x80 [ 36.268950] ? pty_write_room+0xa9/0xd0 [ 36.272895] ? ptmx_open+0x300/0x300 [ 36.276592] __process_echoes+0x48c/0x8c0 [ 36.280849] ? lock_downgrade+0x740/0x740 [ 36.284969] process_echoes+0xe9/0x1a0 [ 36.288834] n_tty_set_termios+0x60f/0xcc0 [ 36.293043] ? process_echoes+0x1a0/0x1a0 [ 36.297164] tty_set_termios+0x5d5/0x810 [ 36.301200] ? tty_wait_until_sent+0x470/0x470 [ 36.305758] ? n_tty_packet_mode_flush+0xe/0x170 [ 36.310494] ? n_tty_close+0x1f0/0x1f0 [ 36.314362] set_termios.part.0+0x244/0x3f0 [ 36.318658] ? set_termiox+0x280/0x280 [ 36.322519] ? unwind_next_frame+0x404/0x17d0 [ 36.326991] tty_mode_ioctl+0x7fc/0xa80 [ 36.330942] ? get_termio+0x240/0x240 [ 36.334718] ? __ldsem_down_read_nested+0x91/0x610 [ 36.339622] ? __ldsem_down_read_nested+0xb0/0x610 [ 36.344542] ? _kstrtoull+0x1f2/0x450 [ 36.348323] ? __ldsem_down_write_nested+0x700/0x700 [ 36.353412] n_tty_ioctl_helper+0x44/0x350 [ 36.357627] n_tty_ioctl+0x47/0x2e0 [ 36.361237] tty_ioctl+0x5af/0x1430 [ 36.364840] ? n_tty_poll+0x7d0/0x7d0 [ 36.368617] ? tty_fasync+0x2c0/0x2c0 [ 36.372402] ? proc_fail_nth_write+0x7b/0x180 [ 36.376874] ? trace_hardirqs_on+0x10/0x10 [ 36.381084] ? fsnotify+0x974/0x11b0 [ 36.384786] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 36.389711] ? debug_check_no_obj_freed+0x2c0/0x680 [ 36.394703] ? tty_fasync+0x2c0/0x2c0 [ 36.398493] do_vfs_ioctl+0x75a/0xff0 [ 36.402306] ? lock_acquire+0x170/0x3f0 [ 36.406253] ? ioctl_preallocate+0x1a0/0x1a0 [ 36.410637] ? __fget+0x265/0x3e0 [ 36.414071] ? do_vfs_ioctl+0xff0/0xff0 [ 36.418029] ? security_file_ioctl+0x83/0xb0 [ 36.422413] SyS_ioctl+0x7f/0xb0 [ 36.425759] ? do_vfs_ioctl+0xff0/0xff0 [ 36.429719] do_syscall_64+0x1d5/0x640 executing program [ 36.433588] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 36.498302] FAULT_INJECTION: forcing a failure. [ 36.498302] name failslab, interval 1, probability 0, space 0, times 0 [ 36.509498] CPU: 1 PID: 8067 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0 [ 36.517355] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 36.526698] Call Trace: [ 36.529264] dump_stack+0x1b2/0x281 [ 36.532867] should_fail.cold+0x10a/0x149 [ 36.537005] ? debug_object_activate+0x292/0x490 [ 36.541740] should_failslab+0xd6/0x130 [ 36.545691] __kmalloc+0x6d/0x400 [ 36.549122] ? tty_buffer_alloc+0xc0/0x270 [ 36.553333] tty_buffer_alloc+0xc0/0x270 [ 36.557371] __tty_buffer_request_room+0x12c/0x290 [ 36.562275] tty_insert_flip_string_fixed_flag+0x8b/0x210 [ 36.567810] tty_insert_flip_string_and_push_buffer+0x3e/0x160 [ 36.573755] pty_write+0xc3/0xf0 [ 36.577099] tty_put_char+0xfe/0x120 [ 36.580786] ? dev_match_devt+0x80/0x80 [ 36.584733] ? pty_write_room+0xa9/0xd0 [ 36.588681] ? ptmx_open+0x300/0x300 [ 36.592370] __process_echoes+0x48c/0x8c0 [ 36.596490] ? lock_downgrade+0x740/0x740 [ 36.600616] process_echoes+0xe9/0x1a0 [ 36.604478] n_tty_set_termios+0x60f/0xcc0 [ 36.608687] ? process_echoes+0x1a0/0x1a0 [ 36.612808] tty_set_termios+0x5d5/0x810 [ 36.616843] ? tty_wait_until_sent+0x470/0x470 [ 36.621397] ? n_tty_packet_mode_flush+0xe/0x170 [ 36.626127] ? n_tty_close+0x1f0/0x1f0 [ 36.629989] set_termios.part.0+0x244/0x3f0 [ 36.634284] ? set_termiox+0x280/0x280 [ 36.638164] ? unwind_next_frame+0x404/0x17d0 [ 36.642633] tty_mode_ioctl+0x7fc/0xa80 [ 36.646579] ? get_termio+0x240/0x240 [ 36.650352] ? __ldsem_down_read_nested+0x91/0x610 [ 36.655254] ? __ldsem_down_read_nested+0xb0/0x610 [ 36.660156] ? _kstrtoull+0x1f2/0x450 [ 36.663931] ? __ldsem_down_write_nested+0x700/0x700 [ 36.669008] n_tty_ioctl_helper+0x44/0x350 [ 36.673216] n_tty_ioctl+0x47/0x2e0 [ 36.676817] tty_ioctl+0x5af/0x1430 [ 36.680437] ? n_tty_poll+0x7d0/0x7d0 [ 36.684212] ? tty_fasync+0x2c0/0x2c0 [ 36.687989] ? proc_fail_nth_write+0x7b/0x180 [ 36.692482] ? trace_hardirqs_on+0x10/0x10 [ 36.696692] ? fsnotify+0x974/0x11b0 [ 36.700381] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 36.705283] ? debug_check_no_obj_freed+0x2c0/0x680 [ 36.710293] ? tty_fasync+0x2c0/0x2c0 [ 36.714068] do_vfs_ioctl+0x75a/0xff0 [ 36.717841] ? lock_acquire+0x170/0x3f0 [ 36.721788] ? ioctl_preallocate+0x1a0/0x1a0 [ 36.726185] ? __fget+0x265/0x3e0 [ 36.729612] ? do_vfs_ioctl+0xff0/0xff0 [ 36.733562] ? security_file_ioctl+0x83/0xb0 [ 36.737942] SyS_ioctl+0x7f/0xb0 [ 36.741281] ? do_vfs_ioctl+0xff0/0xff0 [ 36.745243] do_syscall_64+0x1d5/0x640 executing program [ 36.749116] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 36.818249] FAULT_INJECTION: forcing a failure. [ 36.818249] name failslab, interval 1, probability 0, space 0, times 0 [ 36.829442] CPU: 1 PID: 8070 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0 [ 36.837297] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 36.846629] Call Trace: [ 36.849195] dump_stack+0x1b2/0x281 [ 36.852798] should_fail.cold+0x10a/0x149 [ 36.857034] ? debug_object_activate+0x292/0x490 [ 36.862454] should_failslab+0xd6/0x130 [ 36.866403] __kmalloc+0x6d/0x400 [ 36.869830] ? tty_buffer_alloc+0xc0/0x270 [ 36.874038] tty_buffer_alloc+0xc0/0x270 [ 36.878098] __tty_buffer_request_room+0x12c/0x290 [ 36.883143] tty_insert_flip_string_fixed_flag+0x8b/0x210 [ 36.888669] tty_insert_flip_string_and_push_buffer+0x3e/0x160 [ 36.894623] pty_write+0xc3/0xf0 [ 36.897967] tty_put_char+0xfe/0x120 [ 36.901654] ? dev_match_devt+0x80/0x80 [ 36.905600] ? pty_write_room+0xa9/0xd0 [ 36.909550] ? ptmx_open+0x300/0x300 [ 36.913239] __process_echoes+0x48c/0x8c0 [ 36.917361] ? lock_downgrade+0x740/0x740 [ 36.921486] process_echoes+0xe9/0x1a0 [ 36.925347] n_tty_set_termios+0x60f/0xcc0 [ 36.929582] ? process_echoes+0x1a0/0x1a0 [ 36.933702] tty_set_termios+0x5d5/0x810 [ 36.937737] ? tty_wait_until_sent+0x470/0x470 [ 36.942296] ? n_tty_packet_mode_flush+0xe/0x170 [ 36.947027] ? n_tty_close+0x1f0/0x1f0 [ 36.950894] set_termios.part.0+0x244/0x3f0 [ 36.955190] ? set_termiox+0x280/0x280 [ 36.959051] ? unwind_next_frame+0x404/0x17d0 [ 36.963520] tty_mode_ioctl+0x7fc/0xa80 [ 36.967474] ? get_termio+0x240/0x240 [ 36.971249] ? __ldsem_down_read_nested+0x91/0x610 [ 36.976154] ? __ldsem_down_read_nested+0xb0/0x610 [ 36.981058] ? _kstrtoull+0x1f2/0x450 [ 36.984833] ? __ldsem_down_write_nested+0x700/0x700 [ 36.989931] n_tty_ioctl_helper+0x44/0x350 [ 36.994149] n_tty_ioctl+0x47/0x2e0 [ 36.997874] tty_ioctl+0x5af/0x1430 [ 37.001474] ? n_tty_poll+0x7d0/0x7d0 [ 37.005248] ? tty_fasync+0x2c0/0x2c0 [ 37.009026] ? proc_fail_nth_write+0x7b/0x180 [ 37.013495] ? trace_hardirqs_on+0x10/0x10 [ 37.017705] ? fsnotify+0x974/0x11b0 [ 37.021391] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 37.026296] ? debug_check_no_obj_freed+0x2c0/0x680 [ 37.031373] ? tty_fasync+0x2c0/0x2c0 [ 37.035148] do_vfs_ioctl+0x75a/0xff0 [ 37.038921] ? lock_acquire+0x170/0x3f0 [ 37.042868] ? ioctl_preallocate+0x1a0/0x1a0 [ 37.047269] ? __fget+0x265/0x3e0 [ 37.050694] ? do_vfs_ioctl+0xff0/0xff0 [ 37.054642] ? security_file_ioctl+0x83/0xb0 [ 37.059023] SyS_ioctl+0x7f/0xb0 [ 37.062363] ? do_vfs_ioctl+0xff0/0xff0 executing program [ 37.066310] do_syscall_64+0x1d5/0x640 [ 37.070175] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 37.138186] FAULT_INJECTION: forcing a failure. [ 37.138186] name failslab, interval 1, probability 0, space 0, times 0 [ 37.149383] CPU: 1 PID: 8073 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0 [ 37.157247] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 37.166580] Call Trace: [ 37.169180] dump_stack+0x1b2/0x281 [ 37.172782] should_fail.cold+0x10a/0x149 [ 37.176905] ? debug_object_activate+0x292/0x490 [ 37.181636] should_failslab+0xd6/0x130 [ 37.185588] __kmalloc+0x6d/0x400 [ 37.189015] ? tty_buffer_alloc+0xc0/0x270 [ 37.193223] tty_buffer_alloc+0xc0/0x270 [ 37.197263] __tty_buffer_request_room+0x12c/0x290 [ 37.202165] tty_insert_flip_string_fixed_flag+0x8b/0x210 [ 37.207685] tty_insert_flip_string_and_push_buffer+0x3e/0x160 [ 37.213637] pty_write+0xc3/0xf0 [ 37.216977] tty_put_char+0xfe/0x120 [ 37.220665] ? dev_match_devt+0x80/0x80 [ 37.224614] ? pty_write_room+0xa9/0xd0 [ 37.228562] ? ptmx_open+0x300/0x300 [ 37.232251] __process_echoes+0x48c/0x8c0 [ 37.236373] ? lock_downgrade+0x740/0x740 [ 37.240495] process_echoes+0xe9/0x1a0 [ 37.244361] n_tty_set_termios+0x60f/0xcc0 [ 37.248667] ? process_echoes+0x1a0/0x1a0 [ 37.252829] tty_set_termios+0x5d5/0x810 [ 37.256865] ? tty_wait_until_sent+0x470/0x470 [ 37.261420] ? n_tty_packet_mode_flush+0xe/0x170 [ 37.266160] ? n_tty_close+0x1f0/0x1f0 [ 37.270031] set_termios.part.0+0x244/0x3f0 [ 37.274335] ? set_termiox+0x280/0x280 [ 37.278201] ? unwind_next_frame+0x404/0x17d0 [ 37.282672] tty_mode_ioctl+0x7fc/0xa80 [ 37.286626] ? get_termio+0x240/0x240 [ 37.290403] ? __ldsem_down_read_nested+0x91/0x610 [ 37.295306] ? __ldsem_down_read_nested+0xb0/0x610 [ 37.300211] ? _kstrtoull+0x1f2/0x450 [ 37.303986] ? __ldsem_down_write_nested+0x700/0x700 [ 37.309066] n_tty_ioctl_helper+0x44/0x350 [ 37.313276] n_tty_ioctl+0x47/0x2e0 [ 37.316885] tty_ioctl+0x5af/0x1430 [ 37.320571] ? n_tty_poll+0x7d0/0x7d0 [ 37.324344] ? tty_fasync+0x2c0/0x2c0 [ 37.328117] ? proc_fail_nth_write+0x7b/0x180 [ 37.332586] ? trace_hardirqs_on+0x10/0x10 [ 37.336793] ? fsnotify+0x974/0x11b0 [ 37.340480] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 37.345402] ? debug_check_no_obj_freed+0x2c0/0x680 [ 37.350392] ? tty_fasync+0x2c0/0x2c0 [ 37.354181] do_vfs_ioctl+0x75a/0xff0 [ 37.357968] ? lock_acquire+0x170/0x3f0 [ 37.361926] ? ioctl_preallocate+0x1a0/0x1a0 [ 37.366318] ? __fget+0x265/0x3e0 [ 37.369751] ? do_vfs_ioctl+0xff0/0xff0 [ 37.373706] ? security_file_ioctl+0x83/0xb0 [ 37.378093] SyS_ioctl+0x7f/0xb0 [ 37.381436] ? do_vfs_ioctl+0xff0/0xff0 [ 37.385396] do_syscall_64+0x1d5/0x640 executing program [ 37.389267] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 37.464988] FAULT_INJECTION: forcing a failure. [ 37.464988] name failslab, interval 1, probability 0, space 0, times 0 [ 37.476185] CPU: 0 PID: 8076 Comm: syz-executor370 Not tainted 4.14.300-syzkaller #0 [ 37.484041] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 37.493368] Call Trace: [ 37.495934] dump_stack+0x1b2/0x281 [ 37.499535] should_fail.cold+0x10a/0x149 [ 37.503655] ? debug_object_activate+0x292/0x490 [ 37.508382] should_failslab+0xd6/0x130