Warning: Permanently added '10.128.0.115' (ECDSA) to the list of known hosts. executing program [ 41.493086] FAULT_INJECTION: forcing a failure. [ 41.493086] name failslab, interval 1, probability 0, space 0, times 1 [ 41.504346] CPU: 1 PID: 7995 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 41.512463] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 41.521792] Call Trace: [ 41.524360] dump_stack+0x1b2/0x281 [ 41.527968] should_fail.cold+0x10a/0x149 [ 41.532094] should_failslab+0xd6/0x130 [ 41.536045] __kmalloc+0x2c1/0x400 [ 41.539685] ? __kfifo_alloc+0xdc/0x240 [ 41.543642] __kfifo_alloc+0xdc/0x240 [ 41.547450] gsm_dlci_alloc+0xd4/0x460 [ 41.551316] gsm_activate_mux+0x22e/0x2e0 [ 41.555445] gsmld_open+0x4ed/0x7b0 [ 41.559050] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 41.563271] tty_ldisc_open+0x6c/0xb0 [ 41.567110] tty_set_ldisc+0x287/0x5d0 [ 41.570986] tty_ioctl+0xa2a/0x1430 [ 41.574596] ? tty_fasync+0x2c0/0x2c0 [ 41.578375] ? proc_fail_nth_write+0x7b/0x180 [ 41.582843] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 41.587747] ? _raw_spin_unlock+0x29/0x40 [ 41.591868] ? do_fault_around+0x35e/0x620 [ 41.596080] ? fsnotify+0x974/0x11b0 [ 41.599768] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 41.604670] ? __handle_mm_fault+0x80f/0x4620 [ 41.609139] ? tty_fasync+0x2c0/0x2c0 [ 41.612913] do_vfs_ioctl+0x75a/0xff0 [ 41.616692] ? ioctl_preallocate+0x1a0/0x1a0 [ 41.621075] ? vfs_write+0x319/0x4d0 [ 41.624764] ? SyS_write+0x14d/0x210 [ 41.628453] ? security_file_ioctl+0x83/0xb0 [ 41.632837] SyS_ioctl+0x7f/0xb0 [ 41.636277] ? do_vfs_ioctl+0xff0/0xff0 [ 41.640228] do_syscall_64+0x1d5/0x640 [ 41.644094] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 41.649266] RIP: 0033:0x7f00d84b8cf9 [ 41.652954] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 41.660636] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 41.667880] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 41.675133] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 41.682377] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 41.689620] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 41.706479] FAULT_INJECTION: forcing a failure. [ 41.706479] name failslab, interval 1, probability 0, space 0, times 0 [ 41.717992] CPU: 0 PID: 7996 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 41.725855] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 41.735190] Call Trace: [ 41.737768] dump_stack+0x1b2/0x281 [ 41.741398] should_fail.cold+0x10a/0x149 [ 41.745524] should_failslab+0xd6/0x130 [ 41.749497] __kmalloc+0x2c1/0x400 [ 41.753187] ? __kfifo_alloc+0xdc/0x240 [ 41.757241] __kfifo_alloc+0xdc/0x240 [ 41.761020] gsm_dlci_alloc+0xd4/0x460 [ 41.764889] gsm_activate_mux+0x22e/0x2e0 [ 41.769047] gsmld_open+0x4ed/0x7b0 [ 41.772653] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 41.776885] tty_ldisc_open+0x6c/0xb0 [ 41.780752] tty_set_ldisc+0x287/0x5d0 [ 41.784624] tty_ioctl+0xa2a/0x1430 [ 41.788239] ? tty_fasync+0x2c0/0x2c0 [ 41.792022] ? proc_fail_nth_write+0x7b/0x180 [ 41.796501] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 41.801406] ? _raw_spin_unlock+0x29/0x40 [ 41.805643] ? do_fault_around+0x35e/0x620 [ 41.809879] ? fsnotify+0x974/0x11b0 [ 41.813580] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 41.818615] ? __handle_mm_fault+0x80f/0x4620 [ 41.823120] ? tty_fasync+0x2c0/0x2c0 [ 41.826925] do_vfs_ioctl+0x75a/0xff0 [ 41.830711] ? ioctl_preallocate+0x1a0/0x1a0 [ 41.835100] ? vfs_write+0x319/0x4d0 [ 41.838794] ? SyS_write+0x14d/0x210 [ 41.842554] ? security_file_ioctl+0x83/0xb0 [ 41.846957] SyS_ioctl+0x7f/0xb0 [ 41.850311] ? do_vfs_ioctl+0xff0/0xff0 [ 41.854272] do_syscall_64+0x1d5/0x640 [ 41.858140] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 41.863339] RIP: 0033:0x7f00d84b8cf9 [ 41.867118] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 41.874809] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 41.882069] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 41.889439] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 41.896793] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 41.904052] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 41.917946] FAULT_INJECTION: forcing a failure. [ 41.917946] name failslab, interval 1, probability 0, space 0, times 0 [ 41.929250] CPU: 0 PID: 7997 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 41.937308] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 41.946739] Call Trace: [ 41.949546] dump_stack+0x1b2/0x281 [ 41.953152] should_fail.cold+0x10a/0x149 [ 41.957279] should_failslab+0xd6/0x130 [ 41.961337] __kmalloc+0x2c1/0x400 [ 41.964873] ? __kfifo_alloc+0xdc/0x240 [ 41.968833] __kfifo_alloc+0xdc/0x240 [ 41.972612] gsm_dlci_alloc+0xd4/0x460 [ 41.976486] gsm_activate_mux+0x22e/0x2e0 [ 41.980624] gsmld_open+0x4ed/0x7b0 [ 41.984242] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 41.988453] tty_ldisc_open+0x6c/0xb0 [ 41.992258] tty_set_ldisc+0x287/0x5d0 [ 41.996123] tty_ioctl+0xa2a/0x1430 [ 41.999725] ? tty_fasync+0x2c0/0x2c0 [ 42.003511] ? proc_fail_nth_write+0x7b/0x180 [ 42.007992] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 42.012900] ? _raw_spin_unlock+0x29/0x40 [ 42.017084] ? do_fault_around+0x35e/0x620 [ 42.021327] ? fsnotify+0x974/0x11b0 [ 42.025020] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 42.029937] ? __handle_mm_fault+0x80f/0x4620 [ 42.034933] ? tty_fasync+0x2c0/0x2c0 [ 42.038712] do_vfs_ioctl+0x75a/0xff0 [ 42.042719] ? ioctl_preallocate+0x1a0/0x1a0 [ 42.047405] ? vfs_write+0x319/0x4d0 [ 42.051099] ? SyS_write+0x14d/0x210 [ 42.054789] ? security_file_ioctl+0x83/0xb0 [ 42.059452] SyS_ioctl+0x7f/0xb0 [ 42.062795] ? do_vfs_ioctl+0xff0/0xff0 [ 42.067181] do_syscall_64+0x1d5/0x640 [ 42.071229] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 42.076397] RIP: 0033:0x7f00d84b8cf9 [ 42.080095] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 42.087776] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 42.095657] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 42.103302] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 42.110552] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 42.117991] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 42.131998] FAULT_INJECTION: forcing a failure. [ 42.131998] name failslab, interval 1, probability 0, space 0, times 0 [ 42.143376] CPU: 0 PID: 7998 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 42.151259] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 42.160589] Call Trace: [ 42.163179] dump_stack+0x1b2/0x281 [ 42.167223] should_fail.cold+0x10a/0x149 [ 42.171348] should_failslab+0xd6/0x130 [ 42.175298] __kmalloc+0x2c1/0x400 [ 42.178820] ? __kfifo_alloc+0xdc/0x240 [ 42.182802] __kfifo_alloc+0xdc/0x240 [ 42.186580] gsm_dlci_alloc+0xd4/0x460 [ 42.190652] gsm_activate_mux+0x22e/0x2e0 [ 42.194808] gsmld_open+0x4ed/0x7b0 [ 42.198411] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 42.202624] tty_ldisc_open+0x6c/0xb0 [ 42.206400] tty_set_ldisc+0x287/0x5d0 [ 42.210281] tty_ioctl+0xa2a/0x1430 [ 42.213884] ? tty_fasync+0x2c0/0x2c0 [ 42.217659] ? proc_fail_nth_write+0x7b/0x180 [ 42.222143] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 42.227047] ? _raw_spin_unlock+0x29/0x40 [ 42.231171] ? do_fault_around+0x35e/0x620 [ 42.235383] ? fsnotify+0x974/0x11b0 [ 42.239075] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 42.243985] ? __handle_mm_fault+0x80f/0x4620 [ 42.248458] ? tty_fasync+0x2c0/0x2c0 [ 42.252234] do_vfs_ioctl+0x75a/0xff0 [ 42.256034] ? ioctl_preallocate+0x1a0/0x1a0 [ 42.260529] ? vfs_write+0x319/0x4d0 [ 42.264240] ? SyS_write+0x14d/0x210 [ 42.268026] ? security_file_ioctl+0x83/0xb0 [ 42.272419] SyS_ioctl+0x7f/0xb0 [ 42.275776] ? do_vfs_ioctl+0xff0/0xff0 [ 42.279754] do_syscall_64+0x1d5/0x640 [ 42.283622] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 42.288962] RIP: 0033:0x7f00d84b8cf9 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 42.292735] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 42.300678] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 42.307937] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 42.315200] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 42.322461] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 42.329831] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 42.343511] FAULT_INJECTION: forcing a failure. [ 42.343511] name failslab, interval 1, probability 0, space 0, times 0 [ 42.354809] CPU: 0 PID: 7999 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 42.362763] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 42.372265] Call Trace: [ 42.374832] dump_stack+0x1b2/0x281 [ 42.378452] should_fail.cold+0x10a/0x149 [ 42.382679] should_failslab+0xd6/0x130 [ 42.386906] __kmalloc+0x2c1/0x400 [ 42.390424] ? __kfifo_alloc+0xdc/0x240 [ 42.394741] __kfifo_alloc+0xdc/0x240 [ 42.398635] gsm_dlci_alloc+0xd4/0x460 [ 42.402689] gsm_activate_mux+0x22e/0x2e0 [ 42.406823] gsmld_open+0x4ed/0x7b0 [ 42.410434] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 42.414734] tty_ldisc_open+0x6c/0xb0 [ 42.418548] tty_set_ldisc+0x287/0x5d0 [ 42.422440] tty_ioctl+0xa2a/0x1430 [ 42.426133] ? tty_fasync+0x2c0/0x2c0 [ 42.429912] ? proc_fail_nth_write+0x7b/0x180 [ 42.434384] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 42.439289] ? _raw_spin_unlock+0x29/0x40 [ 42.443434] ? do_fault_around+0x35e/0x620 [ 42.447818] ? fsnotify+0x974/0x11b0 [ 42.452551] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 42.457466] ? __handle_mm_fault+0x80f/0x4620 [ 42.461965] ? tty_fasync+0x2c0/0x2c0 [ 42.465740] do_vfs_ioctl+0x75a/0xff0 [ 42.469516] ? ioctl_preallocate+0x1a0/0x1a0 [ 42.473903] ? vfs_write+0x319/0x4d0 [ 42.477679] ? SyS_write+0x14d/0x210 [ 42.481392] ? security_file_ioctl+0x83/0xb0 [ 42.485800] SyS_ioctl+0x7f/0xb0 [ 42.489146] ? do_vfs_ioctl+0xff0/0xff0 [ 42.493099] do_syscall_64+0x1d5/0x640 [ 42.496965] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 42.502146] RIP: 0033:0x7f00d84b8cf9 [ 42.505855] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 42.513578] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 42.520823] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 42.528155] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 42.535664] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 42.542909] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 42.557094] FAULT_INJECTION: forcing a failure. [ 42.557094] name failslab, interval 1, probability 0, space 0, times 0 [ 42.568343] CPU: 0 PID: 8000 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 42.576640] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 42.586005] Call Trace: [ 42.588587] dump_stack+0x1b2/0x281 [ 42.592192] should_fail.cold+0x10a/0x149 [ 42.596353] should_failslab+0xd6/0x130 [ 42.600309] __kmalloc+0x2c1/0x400 [ 42.603831] ? __kfifo_alloc+0xdc/0x240 [ 42.607869] __kfifo_alloc+0xdc/0x240 [ 42.611663] gsm_dlci_alloc+0xd4/0x460 [ 42.615791] gsm_activate_mux+0x22e/0x2e0 [ 42.620031] gsmld_open+0x4ed/0x7b0 [ 42.624333] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 42.628567] tty_ldisc_open+0x6c/0xb0 [ 42.632519] tty_set_ldisc+0x287/0x5d0 [ 42.636558] tty_ioctl+0xa2a/0x1430 [ 42.640172] ? tty_fasync+0x2c0/0x2c0 [ 42.643972] ? proc_fail_nth_write+0x7b/0x180 [ 42.648445] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 42.653528] ? _raw_spin_unlock+0x29/0x40 [ 42.657659] ? do_fault_around+0x35e/0x620 [ 42.661892] ? fsnotify+0x974/0x11b0 [ 42.665582] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 42.670487] ? __handle_mm_fault+0x80f/0x4620 [ 42.675048] ? tty_fasync+0x2c0/0x2c0 [ 42.678827] do_vfs_ioctl+0x75a/0xff0 [ 42.682602] ? ioctl_preallocate+0x1a0/0x1a0 [ 42.686995] ? vfs_write+0x319/0x4d0 [ 42.690728] ? SyS_write+0x14d/0x210 [ 42.694531] ? security_file_ioctl+0x83/0xb0 [ 42.698916] SyS_ioctl+0x7f/0xb0 [ 42.702258] ? do_vfs_ioctl+0xff0/0xff0 [ 42.706388] do_syscall_64+0x1d5/0x640 [ 42.710257] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 42.715439] RIP: 0033:0x7f00d84b8cf9 [ 42.719125] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 42.727128] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 42.734403] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 42.742262] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 42.749594] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 42.756836] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 42.770491] FAULT_INJECTION: forcing a failure. [ 42.770491] name failslab, interval 1, probability 0, space 0, times 0 [ 42.781911] CPU: 0 PID: 8001 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 42.789869] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 42.799205] Call Trace: [ 42.801794] dump_stack+0x1b2/0x281 [ 42.805422] should_fail.cold+0x10a/0x149 [ 42.809555] should_failslab+0xd6/0x130 [ 42.813510] __kmalloc+0x2c1/0x400 [ 42.817072] ? __kfifo_alloc+0xdc/0x240 [ 42.821035] __kfifo_alloc+0xdc/0x240 [ 42.824820] gsm_dlci_alloc+0xd4/0x460 [ 42.828682] gsm_activate_mux+0x22e/0x2e0 [ 42.832814] gsmld_open+0x4ed/0x7b0 [ 42.836417] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 42.840641] tty_ldisc_open+0x6c/0xb0 [ 42.844421] tty_set_ldisc+0x287/0x5d0 [ 42.848422] tty_ioctl+0xa2a/0x1430 [ 42.852067] ? tty_fasync+0x2c0/0x2c0 [ 42.855854] ? proc_fail_nth_write+0x7b/0x180 [ 42.860325] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 42.865231] ? _raw_spin_unlock+0x29/0x40 [ 42.869354] ? do_fault_around+0x35e/0x620 [ 42.873567] ? fsnotify+0x974/0x11b0 [ 42.877256] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 42.882157] ? __handle_mm_fault+0x80f/0x4620 [ 42.886631] ? tty_fasync+0x2c0/0x2c0 [ 42.890406] do_vfs_ioctl+0x75a/0xff0 [ 42.894183] ? ioctl_preallocate+0x1a0/0x1a0 [ 42.898583] ? vfs_write+0x319/0x4d0 [ 42.902280] ? SyS_write+0x14d/0x210 [ 42.905984] ? security_file_ioctl+0x83/0xb0 [ 42.910378] SyS_ioctl+0x7f/0xb0 [ 42.913745] ? do_vfs_ioctl+0xff0/0xff0 [ 42.917697] do_syscall_64+0x1d5/0x640 [ 42.921565] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 42.926730] RIP: 0033:0x7f00d84b8cf9 [ 42.930419] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 42.938117] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 42.945498] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 42.952748] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 42.960006] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 42.967250] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 42.981152] FAULT_INJECTION: forcing a failure. [ 42.981152] name failslab, interval 1, probability 0, space 0, times 0 [ 42.992420] CPU: 0 PID: 8002 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 43.000286] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 43.009618] Call Trace: [ 43.012201] dump_stack+0x1b2/0x281 [ 43.015808] should_fail.cold+0x10a/0x149 [ 43.019935] should_failslab+0xd6/0x130 [ 43.023886] __kmalloc+0x2c1/0x400 [ 43.027406] ? __kfifo_alloc+0xdc/0x240 [ 43.031354] __kfifo_alloc+0xdc/0x240 [ 43.035137] gsm_dlci_alloc+0xd4/0x460 [ 43.039002] gsm_activate_mux+0x22e/0x2e0 [ 43.043121] gsmld_open+0x4ed/0x7b0 [ 43.046720] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 43.050941] tty_ldisc_open+0x6c/0xb0 [ 43.054715] tty_set_ldisc+0x287/0x5d0 [ 43.058576] tty_ioctl+0xa2a/0x1430 [ 43.062175] ? tty_fasync+0x2c0/0x2c0 [ 43.065948] ? proc_fail_nth_write+0x7b/0x180 [ 43.070427] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 43.075678] ? _raw_spin_unlock+0x29/0x40 [ 43.079810] ? do_fault_around+0x35e/0x620 [ 43.084026] ? fsnotify+0x974/0x11b0 [ 43.087723] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 43.092624] ? __handle_mm_fault+0x80f/0x4620 [ 43.097094] ? tty_fasync+0x2c0/0x2c0 [ 43.100870] do_vfs_ioctl+0x75a/0xff0 [ 43.104651] ? ioctl_preallocate+0x1a0/0x1a0 [ 43.109036] ? vfs_write+0x319/0x4d0 [ 43.112724] ? SyS_write+0x14d/0x210 [ 43.116427] ? security_file_ioctl+0x83/0xb0 [ 43.120809] SyS_ioctl+0x7f/0xb0 [ 43.124147] ? do_vfs_ioctl+0xff0/0xff0 [ 43.128096] do_syscall_64+0x1d5/0x640 [ 43.131959] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 43.137122] RIP: 0033:0x7f00d84b8cf9 [ 43.140803] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 43.148487] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 43.155731] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 43.162973] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 43.170218] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 43.177461] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 43.191634] FAULT_INJECTION: forcing a failure. [ 43.191634] name failslab, interval 1, probability 0, space 0, times 0 [ 43.203044] CPU: 0 PID: 8003 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 43.210903] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 43.220231] Call Trace: [ 43.222808] dump_stack+0x1b2/0x281 [ 43.226412] should_fail.cold+0x10a/0x149 [ 43.230536] should_failslab+0xd6/0x130 [ 43.234483] __kmalloc+0x2c1/0x400 [ 43.237998] ? __kfifo_alloc+0xdc/0x240 [ 43.241946] __kfifo_alloc+0xdc/0x240 [ 43.245722] gsm_dlci_alloc+0xd4/0x460 [ 43.249585] gsm_activate_mux+0x22e/0x2e0 [ 43.253721] gsmld_open+0x4ed/0x7b0 [ 43.257322] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 43.261662] tty_ldisc_open+0x6c/0xb0 [ 43.265441] tty_set_ldisc+0x287/0x5d0 [ 43.269304] tty_ioctl+0xa2a/0x1430 [ 43.272904] ? tty_fasync+0x2c0/0x2c0 [ 43.277483] ? proc_fail_nth_write+0x7b/0x180 [ 43.282069] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 43.286989] ? _raw_spin_unlock+0x29/0x40 [ 43.291111] ? do_fault_around+0x35e/0x620 [ 43.295320] ? fsnotify+0x974/0x11b0 [ 43.299009] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 43.303925] ? __handle_mm_fault+0x80f/0x4620 [ 43.308398] ? tty_fasync+0x2c0/0x2c0 [ 43.312177] do_vfs_ioctl+0x75a/0xff0 [ 43.315959] ? ioctl_preallocate+0x1a0/0x1a0 [ 43.320370] ? vfs_write+0x319/0x4d0 [ 43.324058] ? SyS_write+0x14d/0x210 [ 43.327744] ? security_file_ioctl+0x83/0xb0 [ 43.332129] SyS_ioctl+0x7f/0xb0 [ 43.335468] ? do_vfs_ioctl+0xff0/0xff0 [ 43.339435] do_syscall_64+0x1d5/0x640 [ 43.343310] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 43.348475] RIP: 0033:0x7f00d84b8cf9 [ 43.352158] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 43.359847] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 43.367088] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 43.374379] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 43.381620] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 43.388863] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 43.403030] FAULT_INJECTION: forcing a failure. [ 43.403030] name failslab, interval 1, probability 0, space 0, times 0 [ 43.414298] CPU: 0 PID: 8004 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 43.422172] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 43.431501] Call Trace: [ 43.434070] dump_stack+0x1b2/0x281 [ 43.437677] should_fail.cold+0x10a/0x149 [ 43.441806] should_failslab+0xd6/0x130 [ 43.445756] __kmalloc+0x2c1/0x400 [ 43.449274] ? __kfifo_alloc+0xdc/0x240 [ 43.453226] __kfifo_alloc+0xdc/0x240 [ 43.457006] gsm_dlci_alloc+0xd4/0x460 [ 43.460867] gsm_activate_mux+0x22e/0x2e0 [ 43.464991] gsmld_open+0x4ed/0x7b0 [ 43.468596] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 43.472901] tty_ldisc_open+0x6c/0xb0 [ 43.476682] tty_set_ldisc+0x287/0x5d0 [ 43.480556] tty_ioctl+0xa2a/0x1430 [ 43.484161] ? tty_fasync+0x2c0/0x2c0 [ 43.487942] ? proc_fail_nth_write+0x7b/0x180 [ 43.492409] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 43.497324] ? _raw_spin_unlock+0x29/0x40 [ 43.501444] ? do_fault_around+0x35e/0x620 [ 43.505652] ? fsnotify+0x974/0x11b0 [ 43.509336] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 43.514239] ? __handle_mm_fault+0x80f/0x4620 [ 43.519665] ? tty_fasync+0x2c0/0x2c0 [ 43.523439] do_vfs_ioctl+0x75a/0xff0 [ 43.527215] ? ioctl_preallocate+0x1a0/0x1a0 [ 43.531608] ? vfs_write+0x319/0x4d0 [ 43.535316] ? SyS_write+0x14d/0x210 [ 43.539024] ? security_file_ioctl+0x83/0xb0 [ 43.543412] SyS_ioctl+0x7f/0xb0 [ 43.546767] ? do_vfs_ioctl+0xff0/0xff0 [ 43.550727] do_syscall_64+0x1d5/0x640 [ 43.554600] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 43.559786] RIP: 0033:0x7f00d84b8cf9 [ 43.563485] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 43.571256] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 43.578502] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 43.585749] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 43.593011] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 43.600301] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 43.614298] FAULT_INJECTION: forcing a failure. [ 43.614298] name failslab, interval 1, probability 0, space 0, times 0 [ 43.625772] CPU: 0 PID: 8005 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 43.633628] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 43.642954] Call Trace: [ 43.645545] dump_stack+0x1b2/0x281 [ 43.649152] should_fail.cold+0x10a/0x149 [ 43.653279] should_failslab+0xd6/0x130 [ 43.657228] __kmalloc+0x2c1/0x400 [ 43.660778] ? __kfifo_alloc+0xdc/0x240 [ 43.664749] __kfifo_alloc+0xdc/0x240 [ 43.668616] gsm_dlci_alloc+0xd4/0x460 [ 43.672487] gsm_activate_mux+0x22e/0x2e0 [ 43.676616] gsmld_open+0x4ed/0x7b0 [ 43.680236] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 43.684444] tty_ldisc_open+0x6c/0xb0 [ 43.688223] tty_set_ldisc+0x287/0x5d0 [ 43.692086] tty_ioctl+0xa2a/0x1430 [ 43.695692] ? tty_fasync+0x2c0/0x2c0 [ 43.699466] ? proc_fail_nth_write+0x7b/0x180 [ 43.703937] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 43.708844] ? _raw_spin_unlock+0x29/0x40 [ 43.712987] ? do_fault_around+0x35e/0x620 [ 43.717203] ? fsnotify+0x974/0x11b0 [ 43.720906] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 43.725808] ? __handle_mm_fault+0x80f/0x4620 [ 43.730304] ? tty_fasync+0x2c0/0x2c0 [ 43.734084] do_vfs_ioctl+0x75a/0xff0 [ 43.737861] ? ioctl_preallocate+0x1a0/0x1a0 [ 43.742247] ? vfs_write+0x319/0x4d0 [ 43.745933] ? SyS_write+0x14d/0x210 [ 43.749623] ? security_file_ioctl+0x83/0xb0 [ 43.754006] SyS_ioctl+0x7f/0xb0 [ 43.757346] ? do_vfs_ioctl+0xff0/0xff0 [ 43.761295] do_syscall_64+0x1d5/0x640 [ 43.765163] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 43.770328] RIP: 0033:0x7f00d84b8cf9 [ 43.774012] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 43.781695] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 43.788935] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 43.796179] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 43.803425] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 43.810675] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 43.824650] FAULT_INJECTION: forcing a failure. [ 43.824650] name failslab, interval 1, probability 0, space 0, times 0 [ 43.836114] CPU: 0 PID: 8006 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 43.843972] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 43.853300] Call Trace: [ 43.855872] dump_stack+0x1b2/0x281 [ 43.859476] should_fail.cold+0x10a/0x149 [ 43.863601] should_failslab+0xd6/0x130 [ 43.867546] __kmalloc+0x2c1/0x400 [ 43.871063] ? __kfifo_alloc+0xdc/0x240 [ 43.875009] __kfifo_alloc+0xdc/0x240 [ 43.878782] gsm_dlci_alloc+0xd4/0x460 [ 43.882642] gsm_activate_mux+0x22e/0x2e0 [ 43.886771] gsmld_open+0x4ed/0x7b0 [ 43.890373] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 43.894582] tty_ldisc_open+0x6c/0xb0 [ 43.898356] tty_set_ldisc+0x287/0x5d0 [ 43.902220] tty_ioctl+0xa2a/0x1430 [ 43.905832] ? tty_fasync+0x2c0/0x2c0 [ 43.909611] ? proc_fail_nth_write+0x7b/0x180 [ 43.914081] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 43.918982] ? _raw_spin_unlock+0x29/0x40 [ 43.923103] ? do_fault_around+0x35e/0x620 [ 43.927313] ? fsnotify+0x974/0x11b0 [ 43.930998] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 43.935898] ? __handle_mm_fault+0x80f/0x4620 [ 43.940369] ? tty_fasync+0x2c0/0x2c0 [ 43.944142] do_vfs_ioctl+0x75a/0xff0 [ 43.947917] ? ioctl_preallocate+0x1a0/0x1a0 [ 43.952300] ? vfs_write+0x319/0x4d0 [ 43.955994] ? SyS_write+0x14d/0x210 [ 43.959683] ? security_file_ioctl+0x83/0xb0 [ 43.964063] SyS_ioctl+0x7f/0xb0 [ 43.967399] ? do_vfs_ioctl+0xff0/0xff0 [ 43.971344] do_syscall_64+0x1d5/0x640 [ 43.975207] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 43.980370] RIP: 0033:0x7f00d84b8cf9 [ 43.984055] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 43.991736] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 43.998979] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 44.006220] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 44.013466] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 44.020706] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 44.034612] FAULT_INJECTION: forcing a failure. [ 44.034612] name failslab, interval 1, probability 0, space 0, times 0 [ 44.046011] CPU: 1 PID: 8007 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 44.053886] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 44.063212] Call Trace: [ 44.065780] dump_stack+0x1b2/0x281 [ 44.069386] should_fail.cold+0x10a/0x149 [ 44.073510] should_failslab+0xd6/0x130 [ 44.077458] __kmalloc+0x2c1/0x400 [ 44.080974] ? __kfifo_alloc+0xdc/0x240 [ 44.084923] __kfifo_alloc+0xdc/0x240 [ 44.088698] gsm_dlci_alloc+0xd4/0x460 [ 44.092561] gsm_activate_mux+0x22e/0x2e0 [ 44.096680] gsmld_open+0x4ed/0x7b0 [ 44.100280] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 44.104487] tty_ldisc_open+0x6c/0xb0 [ 44.108261] tty_set_ldisc+0x287/0x5d0 [ 44.112122] tty_ioctl+0xa2a/0x1430 [ 44.115723] ? tty_fasync+0x2c0/0x2c0 [ 44.119503] ? proc_fail_nth_write+0x7b/0x180 [ 44.123969] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 44.128870] ? _raw_spin_unlock+0x29/0x40 [ 44.132989] ? do_fault_around+0x35e/0x620 [ 44.137216] ? fsnotify+0x974/0x11b0 [ 44.140902] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 44.145805] ? __handle_mm_fault+0x80f/0x4620 [ 44.150278] ? tty_fasync+0x2c0/0x2c0 [ 44.154052] do_vfs_ioctl+0x75a/0xff0 [ 44.157924] ? ioctl_preallocate+0x1a0/0x1a0 [ 44.162323] ? vfs_write+0x319/0x4d0 [ 44.166016] ? SyS_write+0x14d/0x210 [ 44.169708] ? security_file_ioctl+0x83/0xb0 [ 44.174092] SyS_ioctl+0x7f/0xb0 [ 44.177435] ? do_vfs_ioctl+0xff0/0xff0 [ 44.181386] do_syscall_64+0x1d5/0x640 [ 44.185273] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 44.190438] RIP: 0033:0x7f00d84b8cf9 [ 44.194123] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 44.201806] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 44.209061] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 44.216315] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 44.223556] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 44.230972] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 44.244655] FAULT_INJECTION: forcing a failure. [ 44.244655] name failslab, interval 1, probability 0, space 0, times 0 [ 44.255919] CPU: 1 PID: 8008 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 44.263783] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 44.273125] Call Trace: [ 44.275711] dump_stack+0x1b2/0x281 [ 44.279324] should_fail.cold+0x10a/0x149 [ 44.283455] should_failslab+0xd6/0x130 [ 44.287432] __kmalloc+0x2c1/0x400 [ 44.290952] ? __kfifo_alloc+0xdc/0x240 [ 44.294920] __kfifo_alloc+0xdc/0x240 [ 44.298709] gsm_dlci_alloc+0xd4/0x460 [ 44.302570] gsm_activate_mux+0x22e/0x2e0 [ 44.306724] gsmld_open+0x4ed/0x7b0 [ 44.310332] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 44.314541] tty_ldisc_open+0x6c/0xb0 [ 44.318317] tty_set_ldisc+0x287/0x5d0 [ 44.322180] tty_ioctl+0xa2a/0x1430 [ 44.325781] ? tty_fasync+0x2c0/0x2c0 [ 44.329558] ? proc_fail_nth_write+0x7b/0x180 [ 44.334049] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 44.338954] ? _raw_spin_unlock+0x29/0x40 [ 44.343075] ? do_fault_around+0x35e/0x620 [ 44.347284] ? fsnotify+0x974/0x11b0 [ 44.350971] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 44.355875] ? __handle_mm_fault+0x80f/0x4620 [ 44.360348] ? tty_fasync+0x2c0/0x2c0 [ 44.364125] do_vfs_ioctl+0x75a/0xff0 [ 44.367898] ? ioctl_preallocate+0x1a0/0x1a0 [ 44.372282] ? vfs_write+0x319/0x4d0 [ 44.375981] ? SyS_write+0x14d/0x210 [ 44.379682] ? security_file_ioctl+0x83/0xb0 [ 44.384065] SyS_ioctl+0x7f/0xb0 [ 44.387404] ? do_vfs_ioctl+0xff0/0xff0 [ 44.391353] do_syscall_64+0x1d5/0x640 [ 44.395216] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 44.400381] RIP: 0033:0x7f00d84b8cf9 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 44.404075] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 44.411762] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 44.419008] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 44.426281] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 44.433525] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 44.440785] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 44.454718] FAULT_INJECTION: forcing a failure. [ 44.454718] name failslab, interval 1, probability 0, space 0, times 0 [ 44.466183] CPU: 1 PID: 8009 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 44.474040] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 44.483364] Call Trace: [ 44.485943] dump_stack+0x1b2/0x281 [ 44.489981] should_fail.cold+0x10a/0x149 [ 44.494105] should_failslab+0xd6/0x130 [ 44.498053] __kmalloc+0x2c1/0x400 [ 44.501571] ? __kfifo_alloc+0xdc/0x240 [ 44.505531] __kfifo_alloc+0xdc/0x240 [ 44.509323] gsm_dlci_alloc+0xd4/0x460 [ 44.513184] gsm_activate_mux+0x22e/0x2e0 [ 44.517322] gsmld_open+0x4ed/0x7b0 [ 44.520945] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 44.525154] tty_ldisc_open+0x6c/0xb0 [ 44.528928] tty_set_ldisc+0x287/0x5d0 [ 44.532788] tty_ioctl+0xa2a/0x1430 [ 44.536387] ? tty_fasync+0x2c0/0x2c0 [ 44.540160] ? proc_fail_nth_write+0x7b/0x180 [ 44.544627] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 44.549531] ? _raw_spin_unlock+0x29/0x40 [ 44.553652] ? do_fault_around+0x35e/0x620 [ 44.557862] ? fsnotify+0x974/0x11b0 [ 44.561566] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 44.566470] ? __handle_mm_fault+0x80f/0x4620 [ 44.570949] ? tty_fasync+0x2c0/0x2c0 [ 44.574734] do_vfs_ioctl+0x75a/0xff0 [ 44.578533] ? ioctl_preallocate+0x1a0/0x1a0 [ 44.582937] ? vfs_write+0x319/0x4d0 [ 44.586632] ? SyS_write+0x14d/0x210 [ 44.590337] ? security_file_ioctl+0x83/0xb0 [ 44.594720] SyS_ioctl+0x7f/0xb0 [ 44.598064] ? do_vfs_ioctl+0xff0/0xff0 [ 44.602015] do_syscall_64+0x1d5/0x640 [ 44.605885] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 44.611055] RIP: 0033:0x7f00d84b8cf9 [ 44.614740] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 44.622530] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 44.629791] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 44.637148] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 44.644392] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 44.651655] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 44.665381] FAULT_INJECTION: forcing a failure. [ 44.665381] name failslab, interval 1, probability 0, space 0, times 0 [ 44.676620] CPU: 1 PID: 8010 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 44.684482] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 44.693811] Call Trace: [ 44.696385] dump_stack+0x1b2/0x281 [ 44.699990] should_fail.cold+0x10a/0x149 [ 44.704110] should_failslab+0xd6/0x130 [ 44.708061] __kmalloc+0x2c1/0x400 [ 44.711632] ? __kfifo_alloc+0xdc/0x240 [ 44.715860] __kfifo_alloc+0xdc/0x240 [ 44.719647] gsm_dlci_alloc+0xd4/0x460 [ 44.723542] gsm_activate_mux+0x22e/0x2e0 [ 44.727676] gsmld_open+0x4ed/0x7b0 [ 44.731284] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 44.735509] tty_ldisc_open+0x6c/0xb0 [ 44.739298] tty_set_ldisc+0x287/0x5d0 [ 44.743171] tty_ioctl+0xa2a/0x1430 [ 44.746800] ? tty_fasync+0x2c0/0x2c0 [ 44.750672] ? proc_fail_nth_write+0x7b/0x180 [ 44.755168] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 44.760094] ? _raw_spin_unlock+0x29/0x40 [ 44.764231] ? do_fault_around+0x35e/0x620 [ 44.768448] ? fsnotify+0x974/0x11b0 [ 44.772142] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 44.777049] ? __handle_mm_fault+0x80f/0x4620 [ 44.781611] ? tty_fasync+0x2c0/0x2c0 [ 44.785416] do_vfs_ioctl+0x75a/0xff0 [ 44.789193] ? ioctl_preallocate+0x1a0/0x1a0 [ 44.793758] ? vfs_write+0x319/0x4d0 [ 44.797450] ? SyS_write+0x14d/0x210 [ 44.801142] ? security_file_ioctl+0x83/0xb0 [ 44.805534] SyS_ioctl+0x7f/0xb0 [ 44.808885] ? do_vfs_ioctl+0xff0/0xff0 [ 44.812851] do_syscall_64+0x1d5/0x640 [ 44.816831] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 44.822007] RIP: 0033:0x7f00d84b8cf9 [ 44.825725] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 44.833677] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 44.841044] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 44.848298] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 44.855649] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 44.863157] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 44.876391] FAULT_INJECTION: forcing a failure. [ 44.876391] name failslab, interval 1, probability 0, space 0, times 0 [ 44.887652] CPU: 1 PID: 8011 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 44.895521] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 44.904857] Call Trace: [ 44.907448] dump_stack+0x1b2/0x281 [ 44.911197] should_fail.cold+0x10a/0x149 [ 44.915328] should_failslab+0xd6/0x130 [ 44.919286] __kmalloc+0x2c1/0x400 [ 44.922803] ? __kfifo_alloc+0xdc/0x240 [ 44.926754] __kfifo_alloc+0xdc/0x240 [ 44.930531] gsm_dlci_alloc+0xd4/0x460 [ 44.934395] gsm_activate_mux+0x22e/0x2e0 [ 44.938517] gsmld_open+0x4ed/0x7b0 [ 44.942118] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 44.946328] tty_ldisc_open+0x6c/0xb0 [ 44.950103] tty_set_ldisc+0x287/0x5d0 [ 44.953970] tty_ioctl+0xa2a/0x1430 [ 44.957575] ? tty_fasync+0x2c0/0x2c0 [ 44.961352] ? proc_fail_nth_write+0x7b/0x180 [ 44.965834] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 44.970846] ? _raw_spin_unlock+0x29/0x40 [ 44.974999] ? do_fault_around+0x35e/0x620 [ 44.979214] ? fsnotify+0x974/0x11b0 [ 44.982934] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 44.987855] ? __handle_mm_fault+0x80f/0x4620 [ 44.992326] ? tty_fasync+0x2c0/0x2c0 [ 44.996108] do_vfs_ioctl+0x75a/0xff0 [ 44.999884] ? ioctl_preallocate+0x1a0/0x1a0 [ 45.004269] ? vfs_write+0x319/0x4d0 [ 45.007958] ? SyS_write+0x14d/0x210 [ 45.011647] ? security_file_ioctl+0x83/0xb0 [ 45.016032] SyS_ioctl+0x7f/0xb0 [ 45.019377] ? do_vfs_ioctl+0xff0/0xff0 [ 45.023327] do_syscall_64+0x1d5/0x640 [ 45.027192] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 45.032356] RIP: 0033:0x7f00d84b8cf9 [ 45.036041] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 45.043769] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 45.051015] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 45.058257] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 45.065505] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 45.072854] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 45.087778] FAULT_INJECTION: forcing a failure. [ 45.087778] name failslab, interval 1, probability 0, space 0, times 0 [ 45.099019] CPU: 1 PID: 8012 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 45.106904] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 45.116231] Call Trace: [ 45.118796] dump_stack+0x1b2/0x281 [ 45.122400] should_fail.cold+0x10a/0x149 [ 45.126525] should_failslab+0xd6/0x130 [ 45.130670] __kmalloc+0x2c1/0x400 [ 45.134190] ? __kfifo_alloc+0xdc/0x240 [ 45.138138] __kfifo_alloc+0xdc/0x240 [ 45.141915] gsm_dlci_alloc+0xd4/0x460 [ 45.145775] gsm_activate_mux+0x22e/0x2e0 [ 45.149895] gsmld_open+0x4ed/0x7b0 [ 45.153494] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 45.157721] tty_ldisc_open+0x6c/0xb0 [ 45.161499] tty_set_ldisc+0x287/0x5d0 [ 45.165368] tty_ioctl+0xa2a/0x1430 [ 45.168973] ? tty_fasync+0x2c0/0x2c0 [ 45.172749] ? proc_fail_nth_write+0x7b/0x180 [ 45.177216] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 45.182119] ? _raw_spin_unlock+0x29/0x40 [ 45.186241] ? do_fault_around+0x35e/0x620 [ 45.190472] ? fsnotify+0x974/0x11b0 [ 45.194155] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 45.199055] ? __handle_mm_fault+0x80f/0x4620 [ 45.203526] ? tty_fasync+0x2c0/0x2c0 [ 45.207300] do_vfs_ioctl+0x75a/0xff0 [ 45.211087] ? ioctl_preallocate+0x1a0/0x1a0 [ 45.215659] ? vfs_write+0x319/0x4d0 [ 45.219348] ? SyS_write+0x14d/0x210 [ 45.223034] ? security_file_ioctl+0x83/0xb0 [ 45.227416] SyS_ioctl+0x7f/0xb0 [ 45.230753] ? do_vfs_ioctl+0xff0/0xff0 [ 45.234706] do_syscall_64+0x1d5/0x640 [ 45.238568] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 45.243737] RIP: 0033:0x7f00d84b8cf9 [ 45.247421] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 45.255099] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 45.262361] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 45.269620] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 45.276878] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 45.284144] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 45.297817] FAULT_INJECTION: forcing a failure. [ 45.297817] name failslab, interval 1, probability 0, space 0, times 0 [ 45.309210] CPU: 1 PID: 8013 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 45.317067] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 45.326396] Call Trace: [ 45.328959] dump_stack+0x1b2/0x281 [ 45.332564] should_fail.cold+0x10a/0x149 [ 45.336689] should_failslab+0xd6/0x130 [ 45.340665] __kmalloc+0x2c1/0x400 [ 45.344178] ? __kfifo_alloc+0xdc/0x240 [ 45.348128] __kfifo_alloc+0xdc/0x240 [ 45.351907] gsm_dlci_alloc+0xd4/0x460 [ 45.355767] gsm_activate_mux+0x22e/0x2e0 [ 45.359903] gsmld_open+0x4ed/0x7b0 [ 45.363504] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 45.367713] tty_ldisc_open+0x6c/0xb0 [ 45.371490] tty_set_ldisc+0x287/0x5d0 [ 45.375349] tty_ioctl+0xa2a/0x1430 [ 45.378951] ? tty_fasync+0x2c0/0x2c0 [ 45.382730] ? proc_fail_nth_write+0x7b/0x180 [ 45.387207] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 45.392110] ? _raw_spin_unlock+0x29/0x40 [ 45.396230] ? do_fault_around+0x35e/0x620 [ 45.400438] ? fsnotify+0x974/0x11b0 [ 45.404141] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 45.409043] ? __handle_mm_fault+0x80f/0x4620 [ 45.413517] ? tty_fasync+0x2c0/0x2c0 [ 45.417292] do_vfs_ioctl+0x75a/0xff0 [ 45.421069] ? ioctl_preallocate+0x1a0/0x1a0 [ 45.425450] ? vfs_write+0x319/0x4d0 [ 45.429145] ? SyS_write+0x14d/0x210 [ 45.432850] ? security_file_ioctl+0x83/0xb0 [ 45.437251] SyS_ioctl+0x7f/0xb0 [ 45.440605] ? do_vfs_ioctl+0xff0/0xff0 [ 45.444553] do_syscall_64+0x1d5/0x640 [ 45.448418] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 45.453580] RIP: 0033:0x7f00d84b8cf9 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 45.457262] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 45.464944] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 45.472187] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 45.479430] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 45.486685] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 45.493931] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 45.507874] FAULT_INJECTION: forcing a failure. [ 45.507874] name failslab, interval 1, probability 0, space 0, times 0 [ 45.519121] CPU: 1 PID: 8014 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 45.526984] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 45.536309] Call Trace: [ 45.538874] dump_stack+0x1b2/0x281 [ 45.542476] should_fail.cold+0x10a/0x149 [ 45.546602] should_failslab+0xd6/0x130 [ 45.550550] __kmalloc+0x2c1/0x400 [ 45.554062] ? __kfifo_alloc+0xdc/0x240 [ 45.558011] __kfifo_alloc+0xdc/0x240 [ 45.561785] gsm_dlci_alloc+0xd4/0x460 [ 45.565663] gsm_activate_mux+0x22e/0x2e0 [ 45.569783] gsmld_open+0x4ed/0x7b0 [ 45.573383] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 45.577590] tty_ldisc_open+0x6c/0xb0 [ 45.581367] tty_set_ldisc+0x287/0x5d0 [ 45.585234] tty_ioctl+0xa2a/0x1430 [ 45.588857] ? tty_fasync+0x2c0/0x2c0 [ 45.592631] ? proc_fail_nth_write+0x7b/0x180 [ 45.597101] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 45.602002] ? _raw_spin_unlock+0x29/0x40 [ 45.606123] ? do_fault_around+0x35e/0x620 [ 45.610340] ? fsnotify+0x974/0x11b0 [ 45.614027] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 45.618936] ? __handle_mm_fault+0x80f/0x4620 [ 45.623496] ? tty_fasync+0x2c0/0x2c0 [ 45.627270] do_vfs_ioctl+0x75a/0xff0 [ 45.631045] ? ioctl_preallocate+0x1a0/0x1a0 [ 45.635437] ? vfs_write+0x319/0x4d0 [ 45.639128] ? SyS_write+0x14d/0x210 [ 45.642821] ? security_file_ioctl+0x83/0xb0 [ 45.647207] SyS_ioctl+0x7f/0xb0 [ 45.650547] ? do_vfs_ioctl+0xff0/0xff0 [ 45.654514] do_syscall_64+0x1d5/0x640 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 45.658406] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 45.663573] RIP: 0033:0x7f00d84b8cf9 [ 45.667267] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 45.674954] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 45.682211] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 45.689456] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 45.696700] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 45.703943] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 45.717365] FAULT_INJECTION: forcing a failure. [ 45.717365] name failslab, interval 1, probability 0, space 0, times 0 [ 45.728746] CPU: 1 PID: 8015 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 45.736610] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 45.745945] Call Trace: [ 45.748515] dump_stack+0x1b2/0x281 [ 45.752125] should_fail.cold+0x10a/0x149 [ 45.756259] should_failslab+0xd6/0x130 [ 45.760263] __kmalloc+0x2c1/0x400 [ 45.763808] ? __kfifo_alloc+0xdc/0x240 [ 45.767781] __kfifo_alloc+0xdc/0x240 [ 45.771575] gsm_dlci_alloc+0xd4/0x460 [ 45.775437] gsm_activate_mux+0x22e/0x2e0 [ 45.779582] gsmld_open+0x4ed/0x7b0 [ 45.783189] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 45.787425] tty_ldisc_open+0x6c/0xb0 [ 45.791207] tty_set_ldisc+0x287/0x5d0 [ 45.795100] tty_ioctl+0xa2a/0x1430 [ 45.798712] ? tty_fasync+0x2c0/0x2c0 [ 45.802494] ? proc_fail_nth_write+0x7b/0x180 [ 45.806965] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 45.811872] ? _raw_spin_unlock+0x29/0x40 [ 45.816003] ? do_fault_around+0x35e/0x620 [ 45.820252] ? fsnotify+0x974/0x11b0 [ 45.823940] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 45.828859] ? __handle_mm_fault+0x80f/0x4620 [ 45.833337] ? tty_fasync+0x2c0/0x2c0 [ 45.837303] do_vfs_ioctl+0x75a/0xff0 [ 45.841086] ? ioctl_preallocate+0x1a0/0x1a0 [ 45.845479] ? vfs_write+0x319/0x4d0 [ 45.849377] ? SyS_write+0x14d/0x210 [ 45.853069] ? security_file_ioctl+0x83/0xb0 [ 45.857452] SyS_ioctl+0x7f/0xb0 [ 45.860792] ? do_vfs_ioctl+0xff0/0xff0 [ 45.864754] do_syscall_64+0x1d5/0x640 [ 45.868620] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 45.873781] RIP: 0033:0x7f00d84b8cf9 [ 45.877464] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 45.885144] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 45.892389] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 45.899634] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 45.906889] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 45.914132] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 45.927317] FAULT_INJECTION: forcing a failure. [ 45.927317] name failslab, interval 1, probability 0, space 0, times 0 [ 45.938595] CPU: 1 PID: 8016 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 45.946466] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 45.955794] Call Trace: [ 45.958356] dump_stack+0x1b2/0x281 [ 45.961960] should_fail.cold+0x10a/0x149 [ 45.966096] should_failslab+0xd6/0x130 [ 45.970056] __kmalloc+0x2c1/0x400 [ 45.973579] ? __kfifo_alloc+0xdc/0x240 [ 45.977528] __kfifo_alloc+0xdc/0x240 [ 45.981303] gsm_dlci_alloc+0xd4/0x460 [ 45.985167] gsm_activate_mux+0x22e/0x2e0 [ 45.989305] gsmld_open+0x4ed/0x7b0 [ 45.992906] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 45.997115] tty_ldisc_open+0x6c/0xb0 [ 46.000889] tty_set_ldisc+0x287/0x5d0 [ 46.004753] tty_ioctl+0xa2a/0x1430 [ 46.008355] ? tty_fasync+0x2c0/0x2c0 [ 46.012130] ? proc_fail_nth_write+0x7b/0x180 [ 46.016599] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 46.021756] ? _raw_spin_unlock+0x29/0x40 [ 46.025900] ? do_fault_around+0x35e/0x620 [ 46.030111] ? fsnotify+0x974/0x11b0 [ 46.033800] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 46.038727] ? __handle_mm_fault+0x80f/0x4620 [ 46.043811] ? tty_fasync+0x2c0/0x2c0 [ 46.047588] do_vfs_ioctl+0x75a/0xff0 [ 46.051365] ? ioctl_preallocate+0x1a0/0x1a0 [ 46.055751] ? vfs_write+0x319/0x4d0 [ 46.059438] ? SyS_write+0x14d/0x210 [ 46.063124] ? security_file_ioctl+0x83/0xb0 [ 46.067512] SyS_ioctl+0x7f/0xb0 [ 46.070850] ? do_vfs_ioctl+0xff0/0xff0 [ 46.074800] do_syscall_64+0x1d5/0x640 [ 46.078674] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 46.083838] RIP: 0033:0x7f00d84b8cf9 [ 46.087521] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 46.095202] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 46.102448] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 46.109713] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 46.116955] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 46.124199] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 46.138067] FAULT_INJECTION: forcing a failure. [ 46.138067] name failslab, interval 1, probability 0, space 0, times 0 [ 46.149434] CPU: 1 PID: 8017 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 46.157288] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 46.166629] Call Trace: [ 46.169195] dump_stack+0x1b2/0x281 [ 46.172798] should_fail.cold+0x10a/0x149 [ 46.176921] should_failslab+0xd6/0x130 [ 46.180876] __kmalloc+0x2c1/0x400 [ 46.184400] ? __kfifo_alloc+0xdc/0x240 [ 46.188346] __kfifo_alloc+0xdc/0x240 [ 46.192122] gsm_dlci_alloc+0xd4/0x460 [ 46.195989] gsm_activate_mux+0x22e/0x2e0 [ 46.200110] gsmld_open+0x4ed/0x7b0 [ 46.203711] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 46.207924] tty_ldisc_open+0x6c/0xb0 [ 46.213060] tty_set_ldisc+0x287/0x5d0 [ 46.216921] tty_ioctl+0xa2a/0x1430 [ 46.220537] ? tty_fasync+0x2c0/0x2c0 [ 46.224312] ? proc_fail_nth_write+0x7b/0x180 [ 46.228781] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 46.233682] ? _raw_spin_unlock+0x29/0x40 [ 46.237804] ? do_fault_around+0x35e/0x620 [ 46.242013] ? fsnotify+0x974/0x11b0 [ 46.245703] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 46.250609] ? __handle_mm_fault+0x80f/0x4620 [ 46.255078] ? tty_fasync+0x2c0/0x2c0 [ 46.258851] do_vfs_ioctl+0x75a/0xff0 [ 46.262625] ? ioctl_preallocate+0x1a0/0x1a0 [ 46.267021] ? vfs_write+0x319/0x4d0 [ 46.270707] ? SyS_write+0x14d/0x210 [ 46.274395] ? security_file_ioctl+0x83/0xb0 [ 46.278777] SyS_ioctl+0x7f/0xb0 [ 46.282130] ? do_vfs_ioctl+0xff0/0xff0 [ 46.286078] do_syscall_64+0x1d5/0x640 [ 46.289942] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 46.295106] RIP: 0033:0x7f00d84b8cf9 [ 46.298790] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 46.306471] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 46.313715] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 46.320957] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 46.328207] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 46.335448] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 46.349213] FAULT_INJECTION: forcing a failure. [ 46.349213] name failslab, interval 1, probability 0, space 0, times 0 [ 46.360488] CPU: 1 PID: 8018 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 46.368347] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 46.377687] Call Trace: [ 46.380251] dump_stack+0x1b2/0x281 [ 46.383858] should_fail.cold+0x10a/0x149 [ 46.387982] should_failslab+0xd6/0x130 [ 46.391934] __kmalloc+0x2c1/0x400 [ 46.395453] ? __kfifo_alloc+0xdc/0x240 [ 46.399401] __kfifo_alloc+0xdc/0x240 [ 46.403184] gsm_dlci_alloc+0xd4/0x460 [ 46.407047] gsm_activate_mux+0x22e/0x2e0 [ 46.411171] gsmld_open+0x4ed/0x7b0 [ 46.414792] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 46.419001] tty_ldisc_open+0x6c/0xb0 [ 46.422777] tty_set_ldisc+0x287/0x5d0 [ 46.426638] tty_ioctl+0xa2a/0x1430 [ 46.430248] ? tty_fasync+0x2c0/0x2c0 [ 46.434029] ? proc_fail_nth_write+0x7b/0x180 [ 46.438499] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 46.443400] ? _raw_spin_unlock+0x29/0x40 [ 46.447539] ? do_fault_around+0x35e/0x620 [ 46.451836] ? fsnotify+0x974/0x11b0 [ 46.455526] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 46.460427] ? __handle_mm_fault+0x80f/0x4620 [ 46.464900] ? tty_fasync+0x2c0/0x2c0 [ 46.468676] do_vfs_ioctl+0x75a/0xff0 [ 46.472452] ? ioctl_preallocate+0x1a0/0x1a0 [ 46.476851] ? vfs_write+0x319/0x4d0 [ 46.480538] ? SyS_write+0x14d/0x210 [ 46.484226] ? security_file_ioctl+0x83/0xb0 [ 46.488614] SyS_ioctl+0x7f/0xb0 [ 46.491955] ? do_vfs_ioctl+0xff0/0xff0 [ 46.495903] do_syscall_64+0x1d5/0x640 [ 46.499768] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 46.504939] RIP: 0033:0x7f00d84b8cf9 [ 46.508646] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 46.516325] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 46.523744] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 46.530988] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 46.538234] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 46.545478] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 46.560278] FAULT_INJECTION: forcing a failure. [ 46.560278] name failslab, interval 1, probability 0, space 0, times 0 [ 46.571662] CPU: 1 PID: 8019 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 46.579520] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 46.588847] Call Trace: [ 46.591417] dump_stack+0x1b2/0x281 [ 46.595024] should_fail.cold+0x10a/0x149 [ 46.599161] should_failslab+0xd6/0x130 [ 46.603111] __kmalloc+0x2c1/0x400 [ 46.606644] ? __kfifo_alloc+0xdc/0x240 [ 46.610628] __kfifo_alloc+0xdc/0x240 [ 46.614410] gsm_dlci_alloc+0xd4/0x460 [ 46.618296] gsm_activate_mux+0x22e/0x2e0 [ 46.622420] gsmld_open+0x4ed/0x7b0 [ 46.626040] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 46.630284] tty_ldisc_open+0x6c/0xb0 [ 46.634064] tty_set_ldisc+0x287/0x5d0 [ 46.637932] tty_ioctl+0xa2a/0x1430 [ 46.641566] ? tty_fasync+0x2c0/0x2c0 [ 46.645445] ? proc_fail_nth_write+0x7b/0x180 [ 46.649950] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 46.654858] ? _raw_spin_unlock+0x29/0x40 [ 46.659072] ? do_fault_around+0x35e/0x620 [ 46.663302] ? fsnotify+0x974/0x11b0 [ 46.666995] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 46.671920] ? __handle_mm_fault+0x80f/0x4620 [ 46.676682] ? tty_fasync+0x2c0/0x2c0 [ 46.680484] do_vfs_ioctl+0x75a/0xff0 [ 46.684264] ? ioctl_preallocate+0x1a0/0x1a0 [ 46.688656] ? vfs_write+0x319/0x4d0 [ 46.692356] ? SyS_write+0x14d/0x210 [ 46.696052] ? security_file_ioctl+0x83/0xb0 [ 46.700456] SyS_ioctl+0x7f/0xb0 [ 46.703800] ? do_vfs_ioctl+0xff0/0xff0 [ 46.708013] do_syscall_64+0x1d5/0x640 [ 46.711913] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 46.717110] RIP: 0033:0x7f00d84b8cf9 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 46.720802] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 46.728496] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 46.736196] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 46.743485] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 46.751252] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 46.758525] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 46.771254] FAULT_INJECTION: forcing a failure. [ 46.771254] name failslab, interval 1, probability 0, space 0, times 0 [ 46.782517] CPU: 1 PID: 8020 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 46.790374] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 46.799779] Call Trace: [ 46.802346] dump_stack+0x1b2/0x281 [ 46.805954] should_fail.cold+0x10a/0x149 [ 46.810086] should_failslab+0xd6/0x130 [ 46.814131] __kmalloc+0x2c1/0x400 [ 46.817651] ? __kfifo_alloc+0xdc/0x240 [ 46.821710] __kfifo_alloc+0xdc/0x240 [ 46.825610] gsm_dlci_alloc+0xd4/0x460 [ 46.829483] gsm_activate_mux+0x22e/0x2e0 [ 46.834689] gsmld_open+0x4ed/0x7b0 [ 46.838299] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 46.842526] tty_ldisc_open+0x6c/0xb0 [ 46.846318] tty_set_ldisc+0x287/0x5d0 [ 46.850183] tty_ioctl+0xa2a/0x1430 [ 46.853793] ? tty_fasync+0x2c0/0x2c0 [ 46.857578] ? proc_fail_nth_write+0x7b/0x180 [ 46.862064] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 46.866981] ? _raw_spin_unlock+0x29/0x40 [ 46.871227] ? do_fault_around+0x35e/0x620 [ 46.875438] ? fsnotify+0x974/0x11b0 [ 46.879136] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 46.884054] ? __handle_mm_fault+0x80f/0x4620 [ 46.888530] ? tty_fasync+0x2c0/0x2c0 [ 46.892323] do_vfs_ioctl+0x75a/0xff0 [ 46.896119] ? ioctl_preallocate+0x1a0/0x1a0 [ 46.900867] ? vfs_write+0x319/0x4d0 [ 46.904820] ? SyS_write+0x14d/0x210 [ 46.908514] ? security_file_ioctl+0x83/0xb0 [ 46.912912] SyS_ioctl+0x7f/0xb0 [ 46.916255] ? do_vfs_ioctl+0xff0/0xff0 [ 46.920214] do_syscall_64+0x1d5/0x640 [ 46.924081] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 46.929263] RIP: 0033:0x7f00d84b8cf9 [ 46.932948] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 46.940716] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 46.947957] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 46.955207] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 46.962466] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 46.969713] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 46.984174] FAULT_INJECTION: forcing a failure. [ 46.984174] name failslab, interval 1, probability 0, space 0, times 0 [ 46.995551] CPU: 1 PID: 8021 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 47.003415] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 47.012742] Call Trace: [ 47.015415] dump_stack+0x1b2/0x281 [ 47.019020] should_fail.cold+0x10a/0x149 [ 47.023142] should_failslab+0xd6/0x130 [ 47.027091] __kmalloc+0x2c1/0x400 [ 47.030606] ? __kfifo_alloc+0xdc/0x240 [ 47.034557] __kfifo_alloc+0xdc/0x240 [ 47.038332] gsm_dlci_alloc+0xd4/0x460 [ 47.042193] gsm_activate_mux+0x22e/0x2e0 [ 47.046314] gsmld_open+0x4ed/0x7b0 [ 47.050013] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 47.054220] tty_ldisc_open+0x6c/0xb0 [ 47.057994] tty_set_ldisc+0x287/0x5d0 [ 47.061871] tty_ioctl+0xa2a/0x1430 [ 47.065478] ? tty_fasync+0x2c0/0x2c0 [ 47.069262] ? proc_fail_nth_write+0x7b/0x180 [ 47.073756] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 47.078670] ? _raw_spin_unlock+0x29/0x40 [ 47.082798] ? do_fault_around+0x35e/0x620 [ 47.087020] ? fsnotify+0x974/0x11b0 [ 47.090717] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 47.096067] ? __handle_mm_fault+0x80f/0x4620 [ 47.100540] ? tty_fasync+0x2c0/0x2c0 [ 47.104320] do_vfs_ioctl+0x75a/0xff0 [ 47.108101] ? ioctl_preallocate+0x1a0/0x1a0 [ 47.112571] ? vfs_write+0x319/0x4d0 [ 47.116258] ? SyS_write+0x14d/0x210 [ 47.119946] ? security_file_ioctl+0x83/0xb0 [ 47.124327] SyS_ioctl+0x7f/0xb0 [ 47.127667] ? do_vfs_ioctl+0xff0/0xff0 [ 47.131615] do_syscall_64+0x1d5/0x640 [ 47.135486] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 47.140649] RIP: 0033:0x7f00d84b8cf9 [ 47.144335] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 47.152015] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 47.159256] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 47.166521] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 47.173766] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 47.181020] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 47.194939] FAULT_INJECTION: forcing a failure. [ 47.194939] name failslab, interval 1, probability 0, space 0, times 0 [ 47.206175] CPU: 1 PID: 8022 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 47.214041] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 47.223367] Call Trace: [ 47.225932] dump_stack+0x1b2/0x281 [ 47.229550] should_fail.cold+0x10a/0x149 [ 47.233672] should_failslab+0xd6/0x130 [ 47.237634] __kmalloc+0x2c1/0x400 [ 47.241149] ? __kfifo_alloc+0xdc/0x240 [ 47.245096] __kfifo_alloc+0xdc/0x240 [ 47.248877] gsm_dlci_alloc+0xd4/0x460 [ 47.252745] gsm_activate_mux+0x22e/0x2e0 [ 47.256868] gsmld_open+0x4ed/0x7b0 [ 47.260469] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 47.264680] tty_ldisc_open+0x6c/0xb0 [ 47.268454] tty_set_ldisc+0x287/0x5d0 [ 47.272318] tty_ioctl+0xa2a/0x1430 [ 47.275918] ? tty_fasync+0x2c0/0x2c0 [ 47.279692] ? proc_fail_nth_write+0x7b/0x180 [ 47.284162] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 47.289072] ? _raw_spin_unlock+0x29/0x40 [ 47.293206] ? do_fault_around+0x35e/0x620 [ 47.297415] ? fsnotify+0x974/0x11b0 [ 47.301112] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 47.306011] ? __handle_mm_fault+0x80f/0x4620 [ 47.310483] ? tty_fasync+0x2c0/0x2c0 [ 47.314277] do_vfs_ioctl+0x75a/0xff0 [ 47.318051] ? ioctl_preallocate+0x1a0/0x1a0 [ 47.322436] ? vfs_write+0x319/0x4d0 [ 47.326123] ? SyS_write+0x14d/0x210 [ 47.329819] ? security_file_ioctl+0x83/0xb0 [ 47.334207] SyS_ioctl+0x7f/0xb0 [ 47.337554] ? do_vfs_ioctl+0xff0/0xff0 [ 47.341505] do_syscall_64+0x1d5/0x640 [ 47.345373] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 47.350540] RIP: 0033:0x7f00d84b8cf9 [ 47.354231] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 47.361912] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 47.369153] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 47.376396] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 47.383660] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 47.390903] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 47.405042] FAULT_INJECTION: forcing a failure. [ 47.405042] name failslab, interval 1, probability 0, space 0, times 0 [ 47.416297] CPU: 1 PID: 8023 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 47.424179] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 47.433508] Call Trace: [ 47.436075] dump_stack+0x1b2/0x281 [ 47.439678] should_fail.cold+0x10a/0x149 [ 47.443800] should_failslab+0xd6/0x130 [ 47.447757] __kmalloc+0x2c1/0x400 [ 47.451271] ? __kfifo_alloc+0xdc/0x240 [ 47.455281] __kfifo_alloc+0xdc/0x240 [ 47.459067] gsm_dlci_alloc+0xd4/0x460 [ 47.462937] gsm_activate_mux+0x22e/0x2e0 [ 47.467059] gsmld_open+0x4ed/0x7b0 [ 47.470661] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 47.474870] tty_ldisc_open+0x6c/0xb0 [ 47.478649] tty_set_ldisc+0x287/0x5d0 [ 47.482516] tty_ioctl+0xa2a/0x1430 [ 47.486143] ? tty_fasync+0x2c0/0x2c0 [ 47.489926] ? proc_fail_nth_write+0x7b/0x180 [ 47.494400] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 47.499301] ? _raw_spin_unlock+0x29/0x40 [ 47.503426] ? do_fault_around+0x35e/0x620 [ 47.507649] ? fsnotify+0x974/0x11b0 [ 47.511340] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 47.516242] ? __handle_mm_fault+0x80f/0x4620 [ 47.520714] ? tty_fasync+0x2c0/0x2c0 [ 47.524498] do_vfs_ioctl+0x75a/0xff0 [ 47.528279] ? ioctl_preallocate+0x1a0/0x1a0 [ 47.532666] ? vfs_write+0x319/0x4d0 [ 47.536365] ? SyS_write+0x14d/0x210 [ 47.540053] ? security_file_ioctl+0x83/0xb0 [ 47.544436] SyS_ioctl+0x7f/0xb0 [ 47.547780] ? do_vfs_ioctl+0xff0/0xff0 [ 47.551730] do_syscall_64+0x1d5/0x640 [ 47.556256] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 47.561431] RIP: 0033:0x7f00d84b8cf9 [ 47.565121] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 47.572803] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 47.580047] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 47.587293] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 47.594542] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 47.601794] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 47.615640] FAULT_INJECTION: forcing a failure. [ 47.615640] name failslab, interval 1, probability 0, space 0, times 0 [ 47.627049] CPU: 1 PID: 8024 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 47.634904] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 47.644232] Call Trace: [ 47.646803] dump_stack+0x1b2/0x281 [ 47.650410] should_fail.cold+0x10a/0x149 [ 47.654536] should_failslab+0xd6/0x130 [ 47.658488] __kmalloc+0x2c1/0x400 [ 47.662005] ? __kfifo_alloc+0xdc/0x240 [ 47.665954] __kfifo_alloc+0xdc/0x240 [ 47.669732] gsm_dlci_alloc+0xd4/0x460 [ 47.673592] gsm_activate_mux+0x22e/0x2e0 [ 47.677714] gsmld_open+0x4ed/0x7b0 [ 47.681316] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 47.685528] tty_ldisc_open+0x6c/0xb0 [ 47.689305] tty_set_ldisc+0x287/0x5d0 [ 47.693167] tty_ioctl+0xa2a/0x1430 [ 47.696769] ? tty_fasync+0x2c0/0x2c0 [ 47.700544] ? proc_fail_nth_write+0x7b/0x180 [ 47.705027] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 47.709930] ? _raw_spin_unlock+0x29/0x40 [ 47.714074] ? do_fault_around+0x35e/0x620 [ 47.718299] ? fsnotify+0x974/0x11b0 [ 47.721993] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 47.726898] ? __handle_mm_fault+0x80f/0x4620 [ 47.731388] ? tty_fasync+0x2c0/0x2c0 [ 47.735167] do_vfs_ioctl+0x75a/0xff0 [ 47.738946] ? ioctl_preallocate+0x1a0/0x1a0 [ 47.743333] ? vfs_write+0x319/0x4d0 [ 47.747028] ? SyS_write+0x14d/0x210 [ 47.750720] ? security_file_ioctl+0x83/0xb0 [ 47.755108] SyS_ioctl+0x7f/0xb0 [ 47.758452] ? do_vfs_ioctl+0xff0/0xff0 [ 47.762420] do_syscall_64+0x1d5/0x640 [ 47.766318] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 47.771494] RIP: 0033:0x7f00d84b8cf9 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 47.775182] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 47.782868] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 47.790116] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 47.797362] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 47.804611] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 47.812039] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 47.826449] FAULT_INJECTION: forcing a failure. [ 47.826449] name failslab, interval 1, probability 0, space 0, times 0 [ 47.837722] CPU: 1 PID: 8025 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 47.845591] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 47.854921] Call Trace: [ 47.857485] dump_stack+0x1b2/0x281 [ 47.861091] should_fail.cold+0x10a/0x149 [ 47.865219] should_failslab+0xd6/0x130 [ 47.869203] __kmalloc+0x2c1/0x400 [ 47.872723] ? __kfifo_alloc+0xdc/0x240 [ 47.876680] __kfifo_alloc+0xdc/0x240 [ 47.880460] gsm_dlci_alloc+0xd4/0x460 [ 47.884336] gsm_activate_mux+0x22e/0x2e0 [ 47.888467] gsmld_open+0x4ed/0x7b0 [ 47.892069] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 47.896299] tty_ldisc_open+0x6c/0xb0 [ 47.900109] tty_set_ldisc+0x287/0x5d0 [ 47.903982] tty_ioctl+0xa2a/0x1430 [ 47.907585] ? tty_fasync+0x2c0/0x2c0 [ 47.911362] ? proc_fail_nth_write+0x7b/0x180 [ 47.915834] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 47.920738] ? _raw_spin_unlock+0x29/0x40 [ 47.924864] ? do_fault_around+0x35e/0x620 [ 47.929084] ? fsnotify+0x974/0x11b0 [ 47.932774] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 47.937677] ? __handle_mm_fault+0x80f/0x4620 [ 47.942147] ? tty_fasync+0x2c0/0x2c0 [ 47.945926] do_vfs_ioctl+0x75a/0xff0 [ 47.949712] ? ioctl_preallocate+0x1a0/0x1a0 [ 47.954096] ? vfs_write+0x319/0x4d0 [ 47.957797] ? SyS_write+0x14d/0x210 [ 47.961487] ? security_file_ioctl+0x83/0xb0 [ 47.965871] SyS_ioctl+0x7f/0xb0 [ 47.969214] ? do_vfs_ioctl+0xff0/0xff0 [ 47.973170] do_syscall_64+0x1d5/0x640 [ 47.977041] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 47.982202] RIP: 0033:0x7f00d84b8cf9 [ 47.985896] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 47.993581] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 48.000824] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 48.008073] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 48.016208] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 48.023473] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 48.036777] FAULT_INJECTION: forcing a failure. [ 48.036777] name failslab, interval 1, probability 0, space 0, times 0 [ 48.048243] CPU: 1 PID: 8026 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 48.056266] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 48.065776] Call Trace: [ 48.068364] dump_stack+0x1b2/0x281 [ 48.071973] should_fail.cold+0x10a/0x149 [ 48.076099] should_failslab+0xd6/0x130 [ 48.080139] __kmalloc+0x2c1/0x400 [ 48.083656] ? __kfifo_alloc+0xdc/0x240 [ 48.087610] __kfifo_alloc+0xdc/0x240 [ 48.091490] gsm_dlci_alloc+0xd4/0x460 [ 48.095471] gsm_activate_mux+0x22e/0x2e0 [ 48.099607] gsmld_open+0x4ed/0x7b0 [ 48.103223] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 48.107811] tty_ldisc_open+0x6c/0xb0 [ 48.111594] tty_set_ldisc+0x287/0x5d0 [ 48.115463] tty_ioctl+0xa2a/0x1430 [ 48.119178] ? tty_fasync+0x2c0/0x2c0 [ 48.122971] ? proc_fail_nth_write+0x7b/0x180 [ 48.127468] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 48.132569] ? _raw_spin_unlock+0x29/0x40 [ 48.136718] ? do_fault_around+0x35e/0x620 [ 48.140931] ? fsnotify+0x974/0x11b0 [ 48.144626] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 48.149543] ? __handle_mm_fault+0x80f/0x4620 [ 48.154026] ? tty_fasync+0x2c0/0x2c0 [ 48.157892] do_vfs_ioctl+0x75a/0xff0 [ 48.161670] ? ioctl_preallocate+0x1a0/0x1a0 [ 48.166059] ? vfs_write+0x319/0x4d0 [ 48.169772] ? SyS_write+0x14d/0x210 [ 48.173471] ? security_file_ioctl+0x83/0xb0 [ 48.177860] SyS_ioctl+0x7f/0xb0 [ 48.181200] ? do_vfs_ioctl+0xff0/0xff0 [ 48.185652] do_syscall_64+0x1d5/0x640 [ 48.189789] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 48.194966] RIP: 0033:0x7f00d84b8cf9 [ 48.198667] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 48.206439] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 48.213794] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 48.221230] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 48.228476] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 48.235724] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 48.249456] FAULT_INJECTION: forcing a failure. [ 48.249456] name failslab, interval 1, probability 0, space 0, times 0 [ 48.260718] CPU: 1 PID: 8027 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 48.268928] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 48.278275] Call Trace: [ 48.280860] dump_stack+0x1b2/0x281 [ 48.284466] should_fail.cold+0x10a/0x149 [ 48.288608] should_failslab+0xd6/0x130 [ 48.292571] __kmalloc+0x2c1/0x400 [ 48.296115] ? __kfifo_alloc+0xdc/0x240 [ 48.300065] __kfifo_alloc+0xdc/0x240 [ 48.303932] gsm_dlci_alloc+0xd4/0x460 [ 48.307797] gsm_activate_mux+0x22e/0x2e0 [ 48.311946] gsmld_open+0x4ed/0x7b0 [ 48.315585] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 48.319798] tty_ldisc_open+0x6c/0xb0 [ 48.323575] tty_set_ldisc+0x287/0x5d0 [ 48.327529] tty_ioctl+0xa2a/0x1430 [ 48.331148] ? tty_fasync+0x2c0/0x2c0 [ 48.335120] ? proc_fail_nth_write+0x7b/0x180 [ 48.339593] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 48.344500] ? _raw_spin_unlock+0x29/0x40 [ 48.348625] ? do_fault_around+0x35e/0x620 [ 48.352836] ? fsnotify+0x974/0x11b0 [ 48.356538] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 48.361442] ? __handle_mm_fault+0x80f/0x4620 [ 48.365913] ? tty_fasync+0x2c0/0x2c0 [ 48.369783] do_vfs_ioctl+0x75a/0xff0 [ 48.373587] ? ioctl_preallocate+0x1a0/0x1a0 [ 48.378069] ? vfs_write+0x319/0x4d0 [ 48.381766] ? SyS_write+0x14d/0x210 [ 48.385461] ? security_file_ioctl+0x83/0xb0 [ 48.389847] SyS_ioctl+0x7f/0xb0 [ 48.393194] ? do_vfs_ioctl+0xff0/0xff0 [ 48.397168] do_syscall_64+0x1d5/0x640 [ 48.401036] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 48.407156] RIP: 0033:0x7f00d84b8cf9 [ 48.410860] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 48.418647] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 48.425892] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 48.433140] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 48.440415] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 48.447686] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 48.460541] FAULT_INJECTION: forcing a failure. [ 48.460541] name failslab, interval 1, probability 0, space 0, times 0 [ 48.471798] CPU: 1 PID: 8028 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 48.479750] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 48.489262] Call Trace: [ 48.491829] dump_stack+0x1b2/0x281 [ 48.495434] should_fail.cold+0x10a/0x149 [ 48.499558] should_failslab+0xd6/0x130 [ 48.503506] __kmalloc+0x2c1/0x400 [ 48.507022] ? __kfifo_alloc+0xdc/0x240 [ 48.510970] __kfifo_alloc+0xdc/0x240 [ 48.514745] gsm_dlci_alloc+0xd4/0x460 [ 48.518605] gsm_activate_mux+0x22e/0x2e0 [ 48.522723] gsmld_open+0x4ed/0x7b0 [ 48.526328] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 48.530544] tty_ldisc_open+0x6c/0xb0 [ 48.534320] tty_set_ldisc+0x287/0x5d0 [ 48.538183] tty_ioctl+0xa2a/0x1430 [ 48.541799] ? tty_fasync+0x2c0/0x2c0 [ 48.545573] ? proc_fail_nth_write+0x7b/0x180 [ 48.550041] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 48.554941] ? _raw_spin_unlock+0x29/0x40 [ 48.559244] ? do_fault_around+0x35e/0x620 [ 48.563466] ? fsnotify+0x974/0x11b0 [ 48.567156] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 48.572059] ? __handle_mm_fault+0x80f/0x4620 [ 48.576528] ? tty_fasync+0x2c0/0x2c0 [ 48.580304] do_vfs_ioctl+0x75a/0xff0 [ 48.584078] ? ioctl_preallocate+0x1a0/0x1a0 [ 48.588554] ? vfs_write+0x319/0x4d0 [ 48.592242] ? SyS_write+0x14d/0x210 [ 48.595931] ? security_file_ioctl+0x83/0xb0 [ 48.600320] SyS_ioctl+0x7f/0xb0 [ 48.603663] ? do_vfs_ioctl+0xff0/0xff0 [ 48.607616] do_syscall_64+0x1d5/0x640 [ 48.611488] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 48.616655] RIP: 0033:0x7f00d84b8cf9 [ 48.620342] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 48.628027] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 48.635285] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 48.642543] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 48.649787] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 48.657035] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 48.670816] FAULT_INJECTION: forcing a failure. [ 48.670816] name failslab, interval 1, probability 0, space 0, times 0 [ 48.682091] CPU: 1 PID: 8029 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 48.689957] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 48.701282] Call Trace: [ 48.703846] dump_stack+0x1b2/0x281 [ 48.707452] should_fail.cold+0x10a/0x149 [ 48.711575] should_failslab+0xd6/0x130 [ 48.715524] __kmalloc+0x2c1/0x400 [ 48.719073] ? __kfifo_alloc+0xdc/0x240 [ 48.723021] __kfifo_alloc+0xdc/0x240 [ 48.726795] gsm_dlci_alloc+0xd4/0x460 [ 48.730655] gsm_activate_mux+0x22e/0x2e0 [ 48.734778] gsmld_open+0x4ed/0x7b0 [ 48.738651] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 48.742866] tty_ldisc_open+0x6c/0xb0 [ 48.746645] tty_set_ldisc+0x287/0x5d0 [ 48.750512] tty_ioctl+0xa2a/0x1430 [ 48.754122] ? tty_fasync+0x2c0/0x2c0 [ 48.757912] ? proc_fail_nth_write+0x7b/0x180 [ 48.762380] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 48.767283] ? _raw_spin_unlock+0x29/0x40 [ 48.771406] ? do_fault_around+0x35e/0x620 [ 48.775625] ? fsnotify+0x974/0x11b0 [ 48.779311] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 48.784214] ? __handle_mm_fault+0x80f/0x4620 [ 48.788689] ? tty_fasync+0x2c0/0x2c0 [ 48.792472] do_vfs_ioctl+0x75a/0xff0 [ 48.796268] ? ioctl_preallocate+0x1a0/0x1a0 [ 48.800663] ? vfs_write+0x319/0x4d0 [ 48.804359] ? SyS_write+0x14d/0x210 [ 48.808050] ? security_file_ioctl+0x83/0xb0 [ 48.812432] SyS_ioctl+0x7f/0xb0 [ 48.815775] ? do_vfs_ioctl+0xff0/0xff0 [ 48.819725] do_syscall_64+0x1d5/0x640 [ 48.823603] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 48.828769] RIP: 0033:0x7f00d84b8cf9 [ 48.832453] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 48.840146] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 48.847444] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 48.854696] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 48.861965] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 48.869209] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 48.882718] FAULT_INJECTION: forcing a failure. [ 48.882718] name failslab, interval 1, probability 0, space 0, times 0 [ 48.894223] CPU: 1 PID: 8030 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 48.902104] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 48.911437] Call Trace: [ 48.914015] dump_stack+0x1b2/0x281 [ 48.917626] should_fail.cold+0x10a/0x149 [ 48.921752] should_failslab+0xd6/0x130 [ 48.925703] __kmalloc+0x2c1/0x400 [ 48.929222] ? __kfifo_alloc+0xdc/0x240 [ 48.933170] __kfifo_alloc+0xdc/0x240 [ 48.936949] gsm_dlci_alloc+0xd4/0x460 [ 48.940810] gsm_activate_mux+0x22e/0x2e0 [ 48.944929] gsmld_open+0x4ed/0x7b0 [ 48.948533] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 48.952748] tty_ldisc_open+0x6c/0xb0 [ 48.956529] tty_set_ldisc+0x287/0x5d0 [ 48.960392] tty_ioctl+0xa2a/0x1430 [ 48.963996] ? tty_fasync+0x2c0/0x2c0 [ 48.967844] ? proc_fail_nth_write+0x7b/0x180 [ 48.972322] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 48.977236] ? _raw_spin_unlock+0x29/0x40 [ 48.981364] ? do_fault_around+0x35e/0x620 [ 48.985587] ? fsnotify+0x974/0x11b0 [ 48.989296] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 48.994200] ? __handle_mm_fault+0x80f/0x4620 [ 48.998679] ? tty_fasync+0x2c0/0x2c0 [ 49.002456] do_vfs_ioctl+0x75a/0xff0 [ 49.006232] ? ioctl_preallocate+0x1a0/0x1a0 [ 49.010616] ? vfs_write+0x319/0x4d0 [ 49.014310] ? SyS_write+0x14d/0x210 [ 49.018009] ? security_file_ioctl+0x83/0xb0 [ 49.022406] SyS_ioctl+0x7f/0xb0 [ 49.025757] ? do_vfs_ioctl+0xff0/0xff0 [ 49.029706] do_syscall_64+0x1d5/0x640 [ 49.033571] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 49.038735] RIP: 0033:0x7f00d84b8cf9 [ 49.042434] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 49.050114] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 49.057357] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 49.064598] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 49.071841] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 49.079085] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 49.092859] FAULT_INJECTION: forcing a failure. [ 49.092859] name failslab, interval 1, probability 0, space 0, times 0 [ 49.104348] CPU: 1 PID: 8031 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 49.112217] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 49.122327] Call Trace: [ 49.124893] dump_stack+0x1b2/0x281 [ 49.128507] should_fail.cold+0x10a/0x149 [ 49.132632] should_failslab+0xd6/0x130 [ 49.136584] __kmalloc+0x2c1/0x400 [ 49.140097] ? __kfifo_alloc+0xdc/0x240 [ 49.144049] __kfifo_alloc+0xdc/0x240 [ 49.147826] gsm_dlci_alloc+0xd4/0x460 [ 49.151709] gsm_activate_mux+0x22e/0x2e0 [ 49.155841] gsmld_open+0x4ed/0x7b0 [ 49.159456] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 49.163674] tty_ldisc_open+0x6c/0xb0 [ 49.167465] tty_set_ldisc+0x287/0x5d0 [ 49.171331] tty_ioctl+0xa2a/0x1430 [ 49.175047] ? tty_fasync+0x2c0/0x2c0 [ 49.178829] ? proc_fail_nth_write+0x7b/0x180 [ 49.183300] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 49.188209] ? _raw_spin_unlock+0x29/0x40 [ 49.192330] ? do_fault_around+0x35e/0x620 [ 49.196544] ? fsnotify+0x974/0x11b0 [ 49.200250] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 49.205248] ? __handle_mm_fault+0x80f/0x4620 [ 49.209720] ? tty_fasync+0x2c0/0x2c0 [ 49.213496] do_vfs_ioctl+0x75a/0xff0 [ 49.217274] ? ioctl_preallocate+0x1a0/0x1a0 [ 49.222497] ? vfs_write+0x319/0x4d0 [ 49.226188] ? SyS_write+0x14d/0x210 [ 49.229965] ? security_file_ioctl+0x83/0xb0 [ 49.234355] SyS_ioctl+0x7f/0xb0 [ 49.237704] ? do_vfs_ioctl+0xff0/0xff0 [ 49.241652] do_syscall_64+0x1d5/0x640 [ 49.245521] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 49.250786] RIP: 0033:0x7f00d84b8cf9 [ 49.254469] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 49.262192] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 49.269443] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 49.276693] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 49.283950] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 49.291196] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 49.305109] FAULT_INJECTION: forcing a failure. [ 49.305109] name failslab, interval 1, probability 0, space 0, times 0 [ 49.316439] CPU: 1 PID: 8032 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 49.324309] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 49.333638] Call Trace: [ 49.336203] dump_stack+0x1b2/0x281 [ 49.339809] should_fail.cold+0x10a/0x149 [ 49.343960] should_failslab+0xd6/0x130 [ 49.347915] __kmalloc+0x2c1/0x400 [ 49.351429] ? __kfifo_alloc+0xdc/0x240 [ 49.355377] __kfifo_alloc+0xdc/0x240 [ 49.359154] gsm_dlci_alloc+0xd4/0x460 [ 49.363013] gsm_activate_mux+0x22e/0x2e0 [ 49.367159] gsmld_open+0x4ed/0x7b0 [ 49.370758] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 49.374967] tty_ldisc_open+0x6c/0xb0 [ 49.378741] tty_set_ldisc+0x287/0x5d0 [ 49.382603] tty_ioctl+0xa2a/0x1430 [ 49.386204] ? tty_fasync+0x2c0/0x2c0 [ 49.389979] ? proc_fail_nth_write+0x7b/0x180 [ 49.394449] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 49.399352] ? _raw_spin_unlock+0x29/0x40 [ 49.403474] ? do_fault_around+0x35e/0x620 [ 49.407687] ? fsnotify+0x974/0x11b0 [ 49.411384] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 49.416295] ? __handle_mm_fault+0x80f/0x4620 [ 49.420770] ? tty_fasync+0x2c0/0x2c0 [ 49.424544] do_vfs_ioctl+0x75a/0xff0 [ 49.428333] ? ioctl_preallocate+0x1a0/0x1a0 [ 49.432810] ? vfs_write+0x319/0x4d0 [ 49.436506] ? SyS_write+0x14d/0x210 [ 49.440202] ? security_file_ioctl+0x83/0xb0 [ 49.444586] SyS_ioctl+0x7f/0xb0 [ 49.447933] ? do_vfs_ioctl+0xff0/0xff0 [ 49.451893] do_syscall_64+0x1d5/0x640 [ 49.455756] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 49.460936] RIP: 0033:0x7f00d84b8cf9 [ 49.464707] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 49.472390] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 49.479636] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 49.486882] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 49.494124] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 49.501366] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 49.515522] FAULT_INJECTION: forcing a failure. [ 49.515522] name failslab, interval 1, probability 0, space 0, times 0 [ 49.526867] CPU: 1 PID: 8033 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 49.534734] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 49.544062] Call Trace: [ 49.546628] dump_stack+0x1b2/0x281 [ 49.550240] should_fail.cold+0x10a/0x149 [ 49.554362] should_failslab+0xd6/0x130 [ 49.558320] __kmalloc+0x2c1/0x400 [ 49.561920] ? __kfifo_alloc+0xdc/0x240 [ 49.565896] __kfifo_alloc+0xdc/0x240 [ 49.569687] gsm_dlci_alloc+0xd4/0x460 [ 49.573550] gsm_activate_mux+0x22e/0x2e0 [ 49.577673] gsmld_open+0x4ed/0x7b0 [ 49.581534] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 49.585745] tty_ldisc_open+0x6c/0xb0 [ 49.589519] tty_set_ldisc+0x287/0x5d0 [ 49.593384] tty_ioctl+0xa2a/0x1430 [ 49.596985] ? tty_fasync+0x2c0/0x2c0 [ 49.600761] ? proc_fail_nth_write+0x7b/0x180 [ 49.605230] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 49.610131] ? _raw_spin_unlock+0x29/0x40 [ 49.614260] ? do_fault_around+0x35e/0x620 [ 49.618478] ? fsnotify+0x974/0x11b0 [ 49.622163] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 49.627064] ? __handle_mm_fault+0x80f/0x4620 [ 49.631532] ? tty_fasync+0x2c0/0x2c0 [ 49.635308] do_vfs_ioctl+0x75a/0xff0 [ 49.639082] ? ioctl_preallocate+0x1a0/0x1a0 [ 49.643468] ? vfs_write+0x319/0x4d0 [ 49.647157] ? SyS_write+0x14d/0x210 [ 49.650846] ? security_file_ioctl+0x83/0xb0 [ 49.655242] SyS_ioctl+0x7f/0xb0 [ 49.658580] ? do_vfs_ioctl+0xff0/0xff0 [ 49.662526] do_syscall_64+0x1d5/0x640 [ 49.666405] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 49.671568] RIP: 0033:0x7f00d84b8cf9 [ 49.675254] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 49.682937] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 49.690183] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 49.697514] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 49.704770] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 49.712014] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 49.724932] FAULT_INJECTION: forcing a failure. [ 49.724932] name failslab, interval 1, probability 0, space 0, times 0 [ 49.736345] CPU: 1 PID: 8034 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 49.744231] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 49.753571] Call Trace: [ 49.756144] dump_stack+0x1b2/0x281 [ 49.759758] should_fail.cold+0x10a/0x149 [ 49.763888] should_failslab+0xd6/0x130 [ 49.767855] __kmalloc+0x2c1/0x400 [ 49.771372] ? __kfifo_alloc+0xdc/0x240 [ 49.776625] __kfifo_alloc+0xdc/0x240 [ 49.780404] gsm_dlci_alloc+0xd4/0x460 [ 49.784270] gsm_activate_mux+0x22e/0x2e0 [ 49.788411] gsmld_open+0x4ed/0x7b0 [ 49.792012] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 49.796240] tty_ldisc_open+0x6c/0xb0 [ 49.800015] tty_set_ldisc+0x287/0x5d0 [ 49.803902] tty_ioctl+0xa2a/0x1430 [ 49.807596] ? tty_fasync+0x2c0/0x2c0 [ 49.811372] ? proc_fail_nth_write+0x7b/0x180 [ 49.815874] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 49.820778] ? _raw_spin_unlock+0x29/0x40 [ 49.824899] ? do_fault_around+0x35e/0x620 [ 49.829141] ? fsnotify+0x974/0x11b0 [ 49.832831] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 49.837733] ? __handle_mm_fault+0x80f/0x4620 [ 49.842204] ? tty_fasync+0x2c0/0x2c0 [ 49.845980] do_vfs_ioctl+0x75a/0xff0 [ 49.849763] ? ioctl_preallocate+0x1a0/0x1a0 [ 49.854233] ? vfs_write+0x319/0x4d0 [ 49.857923] ? SyS_write+0x14d/0x210 [ 49.861609] ? security_file_ioctl+0x83/0xb0 [ 49.867468] SyS_ioctl+0x7f/0xb0 [ 49.870810] ? do_vfs_ioctl+0xff0/0xff0 [ 49.874761] do_syscall_64+0x1d5/0x640 [ 49.878632] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 49.883801] RIP: 0033:0x7f00d84b8cf9 [ 49.887488] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 49.895173] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 49.902444] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 49.909689] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 49.916932] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 49.924179] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 49.938073] FAULT_INJECTION: forcing a failure. [ 49.938073] name failslab, interval 1, probability 0, space 0, times 0 [ 49.949337] CPU: 1 PID: 8035 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 49.957193] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 49.966520] Call Trace: [ 49.969083] dump_stack+0x1b2/0x281 [ 49.972688] should_fail.cold+0x10a/0x149 [ 49.976813] should_failslab+0xd6/0x130 [ 49.980764] __kmalloc+0x2c1/0x400 [ 49.984283] ? __kfifo_alloc+0xdc/0x240 [ 49.988250] __kfifo_alloc+0xdc/0x240 [ 49.992026] gsm_dlci_alloc+0xd4/0x460 [ 49.995886] gsm_activate_mux+0x22e/0x2e0 [ 50.000006] gsmld_open+0x4ed/0x7b0 [ 50.003621] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 50.007833] tty_ldisc_open+0x6c/0xb0 [ 50.011617] tty_set_ldisc+0x287/0x5d0 [ 50.015497] tty_ioctl+0xa2a/0x1430 [ 50.019104] ? tty_fasync+0x2c0/0x2c0 [ 50.022884] ? proc_fail_nth_write+0x7b/0x180 [ 50.027362] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 50.032267] ? _raw_spin_unlock+0x29/0x40 [ 50.036388] ? do_fault_around+0x35e/0x620 [ 50.040598] ? fsnotify+0x974/0x11b0 [ 50.044286] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 50.049347] ? __handle_mm_fault+0x80f/0x4620 [ 50.053823] ? tty_fasync+0x2c0/0x2c0 [ 50.057612] do_vfs_ioctl+0x75a/0xff0 [ 50.061479] ? ioctl_preallocate+0x1a0/0x1a0 [ 50.065865] ? vfs_write+0x319/0x4d0 [ 50.069576] ? SyS_write+0x14d/0x210 [ 50.073277] ? security_file_ioctl+0x83/0xb0 [ 50.077660] SyS_ioctl+0x7f/0xb0 [ 50.081008] ? do_vfs_ioctl+0xff0/0xff0 [ 50.084956] do_syscall_64+0x1d5/0x640 [ 50.088823] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 50.094079] RIP: 0033:0x7f00d84b8cf9 [ 50.097765] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 50.105449] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 50.112701] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 50.119951] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 50.127312] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 50.134647] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 50.147409] FAULT_INJECTION: forcing a failure. [ 50.147409] name failslab, interval 1, probability 0, space 0, times 0 [ 50.158650] CPU: 1 PID: 8036 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 50.166614] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 50.176034] Call Trace: [ 50.178598] dump_stack+0x1b2/0x281 [ 50.182205] should_fail.cold+0x10a/0x149 [ 50.186349] should_failslab+0xd6/0x130 [ 50.190333] __kmalloc+0x2c1/0x400 [ 50.193856] ? __kfifo_alloc+0xdc/0x240 [ 50.197824] __kfifo_alloc+0xdc/0x240 [ 50.201716] gsm_dlci_alloc+0xd4/0x460 [ 50.205592] gsm_activate_mux+0x22e/0x2e0 [ 50.209724] gsmld_open+0x4ed/0x7b0 [ 50.213416] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 50.217822] tty_ldisc_open+0x6c/0xb0 [ 50.221602] tty_set_ldisc+0x287/0x5d0 [ 50.225477] tty_ioctl+0xa2a/0x1430 [ 50.229095] ? tty_fasync+0x2c0/0x2c0 [ 50.232915] ? proc_fail_nth_write+0x7b/0x180 [ 50.237403] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 50.242322] ? _raw_spin_unlock+0x29/0x40 [ 50.246551] ? do_fault_around+0x35e/0x620 [ 50.250948] ? fsnotify+0x974/0x11b0 [ 50.254737] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 50.259660] ? __handle_mm_fault+0x80f/0x4620 [ 50.264155] ? tty_fasync+0x2c0/0x2c0 [ 50.267952] do_vfs_ioctl+0x75a/0xff0 [ 50.271753] ? ioctl_preallocate+0x1a0/0x1a0 [ 50.276144] ? vfs_write+0x319/0x4d0 [ 50.279843] ? SyS_write+0x14d/0x210 [ 50.283543] ? security_file_ioctl+0x83/0xb0 [ 50.287934] SyS_ioctl+0x7f/0xb0 [ 50.291284] ? do_vfs_ioctl+0xff0/0xff0 [ 50.295243] do_syscall_64+0x1d5/0x640 [ 50.299120] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 50.304291] RIP: 0033:0x7f00d84b8cf9 [ 50.307979] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 50.315674] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 50.322922] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 50.330168] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 50.337416] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 50.344843] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 50.358809] FAULT_INJECTION: forcing a failure. [ 50.358809] name failslab, interval 1, probability 0, space 0, times 0 [ 50.370149] CPU: 1 PID: 8037 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 50.378024] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 50.387442] Call Trace: [ 50.390029] dump_stack+0x1b2/0x281 [ 50.393642] should_fail.cold+0x10a/0x149 [ 50.397790] should_failslab+0xd6/0x130 [ 50.401742] __kmalloc+0x2c1/0x400 [ 50.405270] ? __kfifo_alloc+0xdc/0x240 [ 50.409242] __kfifo_alloc+0xdc/0x240 [ 50.413023] gsm_dlci_alloc+0xd4/0x460 [ 50.416910] gsm_activate_mux+0x22e/0x2e0 [ 50.421141] gsmld_open+0x4ed/0x7b0 [ 50.424767] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 50.429083] tty_ldisc_open+0x6c/0xb0 [ 50.432883] tty_set_ldisc+0x287/0x5d0 [ 50.436772] tty_ioctl+0xa2a/0x1430 [ 50.440389] ? tty_fasync+0x2c0/0x2c0 [ 50.444168] ? proc_fail_nth_write+0x7b/0x180 [ 50.449430] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 50.454349] ? _raw_spin_unlock+0x29/0x40 [ 50.458473] ? do_fault_around+0x35e/0x620 [ 50.462951] ? fsnotify+0x974/0x11b0 [ 50.466642] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 50.471573] ? __handle_mm_fault+0x80f/0x4620 [ 50.476065] ? tty_fasync+0x2c0/0x2c0 [ 50.479845] do_vfs_ioctl+0x75a/0xff0 [ 50.483627] ? ioctl_preallocate+0x1a0/0x1a0 [ 50.488018] ? vfs_write+0x319/0x4d0 [ 50.491714] ? SyS_write+0x14d/0x210 [ 50.495418] ? security_file_ioctl+0x83/0xb0 [ 50.499905] SyS_ioctl+0x7f/0xb0 [ 50.503517] ? do_vfs_ioctl+0xff0/0xff0 [ 50.507483] do_syscall_64+0x1d5/0x640 [ 50.511380] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 50.516555] RIP: 0033:0x7f00d84b8cf9 [ 50.520276] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 50.527960] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 50.535225] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 50.542472] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 50.549718] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 50.556977] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 50.570784] FAULT_INJECTION: forcing a failure. [ 50.570784] name failslab, interval 1, probability 0, space 0, times 0 [ 50.582053] CPU: 1 PID: 8038 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 50.589914] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 50.599960] Call Trace: [ 50.602538] dump_stack+0x1b2/0x281 [ 50.606149] should_fail.cold+0x10a/0x149 [ 50.610275] should_failslab+0xd6/0x130 [ 50.614234] __kmalloc+0x2c1/0x400 [ 50.617756] ? __kfifo_alloc+0xdc/0x240 [ 50.621712] __kfifo_alloc+0xdc/0x240 [ 50.625536] gsm_dlci_alloc+0xd4/0x460 [ 50.629408] gsm_activate_mux+0x22e/0x2e0 [ 50.633539] gsmld_open+0x4ed/0x7b0 [ 50.637150] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 50.641445] tty_ldisc_open+0x6c/0xb0 [ 50.645245] tty_set_ldisc+0x287/0x5d0 [ 50.649115] tty_ioctl+0xa2a/0x1430 [ 50.652727] ? tty_fasync+0x2c0/0x2c0 [ 50.656503] ? proc_fail_nth_write+0x7b/0x180 [ 50.660974] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 50.665875] ? _raw_spin_unlock+0x29/0x40 [ 50.669997] ? do_fault_around+0x35e/0x620 [ 50.674212] ? fsnotify+0x974/0x11b0 [ 50.677901] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 50.682801] ? __handle_mm_fault+0x80f/0x4620 [ 50.687362] ? tty_fasync+0x2c0/0x2c0 [ 50.691149] do_vfs_ioctl+0x75a/0xff0 [ 50.694930] ? ioctl_preallocate+0x1a0/0x1a0 [ 50.699321] ? vfs_write+0x319/0x4d0 [ 50.703012] ? SyS_write+0x14d/0x210 [ 50.706716] ? security_file_ioctl+0x83/0xb0 [ 50.711102] SyS_ioctl+0x7f/0xb0 [ 50.714442] ? do_vfs_ioctl+0xff0/0xff0 [ 50.718408] do_syscall_64+0x1d5/0x640 [ 50.722273] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 50.727440] RIP: 0033:0x7f00d84b8cf9 [ 50.731140] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 50.738838] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 50.746085] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 50.753351] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 50.760686] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 50.768030] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 50.781751] FAULT_INJECTION: forcing a failure. [ 50.781751] name failslab, interval 1, probability 0, space 0, times 0 [ 50.793178] CPU: 1 PID: 8039 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 50.801036] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 50.810397] Call Trace: [ 50.812970] dump_stack+0x1b2/0x281 [ 50.816576] should_fail.cold+0x10a/0x149 [ 50.820703] should_failslab+0xd6/0x130 [ 50.824653] __kmalloc+0x2c1/0x400 [ 50.828175] ? __kfifo_alloc+0xdc/0x240 [ 50.832123] __kfifo_alloc+0xdc/0x240 [ 50.835901] gsm_dlci_alloc+0xd4/0x460 [ 50.839876] gsm_activate_mux+0x22e/0x2e0 [ 50.844021] gsmld_open+0x4ed/0x7b0 [ 50.847645] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 50.851865] tty_ldisc_open+0x6c/0xb0 [ 50.855641] tty_set_ldisc+0x287/0x5d0 [ 50.859510] tty_ioctl+0xa2a/0x1430 [ 50.863112] ? tty_fasync+0x2c0/0x2c0 [ 50.866906] ? proc_fail_nth_write+0x7b/0x180 [ 50.871385] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 50.876310] ? _raw_spin_unlock+0x29/0x40 [ 50.880451] ? do_fault_around+0x35e/0x620 [ 50.884670] ? fsnotify+0x974/0x11b0 [ 50.888382] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 50.893288] ? __handle_mm_fault+0x80f/0x4620 [ 50.897766] ? tty_fasync+0x2c0/0x2c0 [ 50.901568] do_vfs_ioctl+0x75a/0xff0 [ 50.905348] ? ioctl_preallocate+0x1a0/0x1a0 [ 50.909733] ? vfs_write+0x319/0x4d0 [ 50.913429] ? SyS_write+0x14d/0x210 [ 50.917122] ? security_file_ioctl+0x83/0xb0 [ 50.921517] SyS_ioctl+0x7f/0xb0 [ 50.924856] ? do_vfs_ioctl+0xff0/0xff0 [ 50.928805] do_syscall_64+0x1d5/0x640 [ 50.932668] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 50.937832] RIP: 0033:0x7f00d84b8cf9 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 50.941513] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 50.949211] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 50.956455] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 50.963712] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 50.970952] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 50.978206] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 50.991024] FAULT_INJECTION: forcing a failure. [ 50.991024] name failslab, interval 1, probability 0, space 0, times 0 [ 51.002461] CPU: 1 PID: 8040 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 51.010333] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 51.019658] Call Trace: [ 51.022223] dump_stack+0x1b2/0x281 [ 51.025827] should_fail.cold+0x10a/0x149 [ 51.029951] should_failslab+0xd6/0x130 [ 51.033907] __kmalloc+0x2c1/0x400 [ 51.037427] ? __kfifo_alloc+0xdc/0x240 [ 51.041375] __kfifo_alloc+0xdc/0x240 [ 51.045151] gsm_dlci_alloc+0xd4/0x460 [ 51.049011] gsm_activate_mux+0x22e/0x2e0 [ 51.053138] gsmld_open+0x4ed/0x7b0 [ 51.056735] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 51.060944] tty_ldisc_open+0x6c/0xb0 [ 51.064723] tty_set_ldisc+0x287/0x5d0 [ 51.068585] tty_ioctl+0xa2a/0x1430 [ 51.072186] ? tty_fasync+0x2c0/0x2c0 [ 51.075960] ? proc_fail_nth_write+0x7b/0x180 [ 51.080428] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 51.085338] ? _raw_spin_unlock+0x29/0x40 [ 51.089473] ? do_fault_around+0x35e/0x620 [ 51.093686] ? fsnotify+0x974/0x11b0 [ 51.097376] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 51.102278] ? __handle_mm_fault+0x80f/0x4620 [ 51.106750] ? tty_fasync+0x2c0/0x2c0 [ 51.110525] do_vfs_ioctl+0x75a/0xff0 [ 51.114301] ? ioctl_preallocate+0x1a0/0x1a0 [ 51.118684] ? vfs_write+0x319/0x4d0 [ 51.122370] ? SyS_write+0x14d/0x210 [ 51.126060] ? security_file_ioctl+0x83/0xb0 [ 51.130440] SyS_ioctl+0x7f/0xb0 [ 51.133779] ? do_vfs_ioctl+0xff0/0xff0 [ 51.137727] do_syscall_64+0x1d5/0x640 [ 51.141591] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 51.146754] RIP: 0033:0x7f00d84b8cf9 [ 51.150437] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 51.158126] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 51.165375] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 51.172618] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 51.179861] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 51.187108] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 51.201933] FAULT_INJECTION: forcing a failure. [ 51.201933] name failslab, interval 1, probability 0, space 0, times 0 [ 51.213440] CPU: 1 PID: 8041 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 51.221320] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 51.230649] Call Trace: [ 51.233217] dump_stack+0x1b2/0x281 [ 51.236833] should_fail.cold+0x10a/0x149 [ 51.240966] should_failslab+0xd6/0x130 [ 51.244944] __kmalloc+0x2c1/0x400 [ 51.248462] ? __kfifo_alloc+0xdc/0x240 [ 51.252411] __kfifo_alloc+0xdc/0x240 [ 51.256204] gsm_dlci_alloc+0xd4/0x460 [ 51.260083] gsm_activate_mux+0x22e/0x2e0 [ 51.264217] gsmld_open+0x4ed/0x7b0 [ 51.267829] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 51.272056] tty_ldisc_open+0x6c/0xb0 [ 51.275836] tty_set_ldisc+0x287/0x5d0 [ 51.279699] tty_ioctl+0xa2a/0x1430 [ 51.283321] ? tty_fasync+0x2c0/0x2c0 [ 51.287104] ? proc_fail_nth_write+0x7b/0x180 [ 51.291577] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 51.296478] ? _raw_spin_unlock+0x29/0x40 [ 51.300606] ? do_fault_around+0x35e/0x620 [ 51.304825] ? fsnotify+0x974/0x11b0 [ 51.308514] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 51.313416] ? __handle_mm_fault+0x80f/0x4620 [ 51.317887] ? tty_fasync+0x2c0/0x2c0 [ 51.321665] do_vfs_ioctl+0x75a/0xff0 [ 51.325440] ? ioctl_preallocate+0x1a0/0x1a0 [ 51.329823] ? vfs_write+0x319/0x4d0 [ 51.333530] ? SyS_write+0x14d/0x210 [ 51.337220] ? security_file_ioctl+0x83/0xb0 [ 51.341600] SyS_ioctl+0x7f/0xb0 [ 51.344945] ? do_vfs_ioctl+0xff0/0xff0 [ 51.348893] do_syscall_64+0x1d5/0x640 [ 51.352756] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 51.357919] RIP: 0033:0x7f00d84b8cf9 [ 51.361602] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 51.369283] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 51.376528] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 51.383772] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 51.391038] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 51.398280] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 51.412280] FAULT_INJECTION: forcing a failure. [ 51.412280] name failslab, interval 1, probability 0, space 0, times 0 [ 51.423804] CPU: 1 PID: 8042 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 51.431665] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 51.440994] Call Trace: [ 51.443675] dump_stack+0x1b2/0x281 [ 51.447283] should_fail.cold+0x10a/0x149 [ 51.451407] should_failslab+0xd6/0x130 [ 51.455358] __kmalloc+0x2c1/0x400 [ 51.458873] ? __kfifo_alloc+0xdc/0x240 [ 51.462829] __kfifo_alloc+0xdc/0x240 [ 51.466614] gsm_dlci_alloc+0xd4/0x460 [ 51.470481] gsm_activate_mux+0x22e/0x2e0 [ 51.474607] gsmld_open+0x4ed/0x7b0 [ 51.478208] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 51.482416] tty_ldisc_open+0x6c/0xb0 [ 51.486195] tty_set_ldisc+0x287/0x5d0 [ 51.490057] tty_ioctl+0xa2a/0x1430 [ 51.493659] ? tty_fasync+0x2c0/0x2c0 [ 51.497431] ? proc_fail_nth_write+0x7b/0x180 [ 51.501902] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 51.506804] ? _raw_spin_unlock+0x29/0x40 [ 51.510927] ? do_fault_around+0x35e/0x620 [ 51.515136] ? fsnotify+0x974/0x11b0 [ 51.518833] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 51.523736] ? __handle_mm_fault+0x80f/0x4620 [ 51.528208] ? tty_fasync+0x2c0/0x2c0 [ 51.531984] do_vfs_ioctl+0x75a/0xff0 [ 51.535775] ? ioctl_preallocate+0x1a0/0x1a0 [ 51.540174] ? vfs_write+0x319/0x4d0 [ 51.543863] ? SyS_write+0x14d/0x210 [ 51.547576] ? security_file_ioctl+0x83/0xb0 [ 51.551960] SyS_ioctl+0x7f/0xb0 [ 51.555301] ? do_vfs_ioctl+0xff0/0xff0 [ 51.559260] do_syscall_64+0x1d5/0x640 [ 51.563140] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 51.568310] RIP: 0033:0x7f00d84b8cf9 [ 51.571998] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 51.579683] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 51.586929] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 51.594187] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 51.601443] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 51.608689] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 51.623530] FAULT_INJECTION: forcing a failure. [ 51.623530] name failslab, interval 1, probability 0, space 0, times 0 [ 51.634896] CPU: 1 PID: 8043 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 51.642751] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 51.652168] Call Trace: [ 51.654741] dump_stack+0x1b2/0x281 [ 51.658348] should_fail.cold+0x10a/0x149 [ 51.662473] should_failslab+0xd6/0x130 [ 51.666422] __kmalloc+0x2c1/0x400 [ 51.670011] ? __kfifo_alloc+0xdc/0x240 [ 51.674094] __kfifo_alloc+0xdc/0x240 [ 51.677872] gsm_dlci_alloc+0xd4/0x460 [ 51.681746] gsm_activate_mux+0x22e/0x2e0 [ 51.685895] gsmld_open+0x4ed/0x7b0 [ 51.689500] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 51.693718] tty_ldisc_open+0x6c/0xb0 [ 51.697503] tty_set_ldisc+0x287/0x5d0 [ 51.701367] tty_ioctl+0xa2a/0x1430 [ 51.704971] ? tty_fasync+0x2c0/0x2c0 [ 51.708758] ? proc_fail_nth_write+0x7b/0x180 [ 51.713249] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 51.718243] ? _raw_spin_unlock+0x29/0x40 [ 51.722365] ? do_fault_around+0x35e/0x620 [ 51.726578] ? fsnotify+0x974/0x11b0 [ 51.730265] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 51.735178] ? __handle_mm_fault+0x80f/0x4620 [ 51.739675] ? tty_fasync+0x2c0/0x2c0 [ 51.743464] do_vfs_ioctl+0x75a/0xff0 [ 51.747246] ? ioctl_preallocate+0x1a0/0x1a0 [ 51.751719] ? vfs_write+0x319/0x4d0 [ 51.755501] ? SyS_write+0x14d/0x210 [ 51.759191] ? security_file_ioctl+0x83/0xb0 [ 51.763574] SyS_ioctl+0x7f/0xb0 [ 51.766932] ? do_vfs_ioctl+0xff0/0xff0 [ 51.770879] do_syscall_64+0x1d5/0x640 [ 51.774748] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 51.779915] RIP: 0033:0x7f00d84b8cf9 [ 51.783600] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 51.791295] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 51.798545] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 51.806498] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 51.813773] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 51.821018] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 51.834141] FAULT_INJECTION: forcing a failure. [ 51.834141] name failslab, interval 1, probability 0, space 0, times 0 [ 51.845399] CPU: 1 PID: 8044 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 51.853267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 51.862601] Call Trace: [ 51.865164] dump_stack+0x1b2/0x281 [ 51.868768] should_fail.cold+0x10a/0x149 [ 51.872907] should_failslab+0xd6/0x130 [ 51.876855] __kmalloc+0x2c1/0x400 [ 51.880372] ? __kfifo_alloc+0xdc/0x240 [ 51.884320] __kfifo_alloc+0xdc/0x240 [ 51.888099] gsm_dlci_alloc+0xd4/0x460 [ 51.891963] gsm_activate_mux+0x22e/0x2e0 [ 51.896084] gsmld_open+0x4ed/0x7b0 [ 51.899684] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 51.903895] tty_ldisc_open+0x6c/0xb0 [ 51.907761] tty_set_ldisc+0x287/0x5d0 [ 51.911623] tty_ioctl+0xa2a/0x1430 [ 51.915229] ? tty_fasync+0x2c0/0x2c0 [ 51.919015] ? proc_fail_nth_write+0x7b/0x180 [ 51.923483] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 51.928384] ? _raw_spin_unlock+0x29/0x40 [ 51.932506] ? do_fault_around+0x35e/0x620 [ 51.936717] ? fsnotify+0x974/0x11b0 [ 51.940414] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 51.945314] ? __handle_mm_fault+0x80f/0x4620 [ 51.949792] ? tty_fasync+0x2c0/0x2c0 [ 51.953573] do_vfs_ioctl+0x75a/0xff0 [ 51.957359] ? ioctl_preallocate+0x1a0/0x1a0 [ 51.961743] ? vfs_write+0x319/0x4d0 [ 51.965433] ? SyS_write+0x14d/0x210 [ 51.969123] ? security_file_ioctl+0x83/0xb0 [ 51.973504] SyS_ioctl+0x7f/0xb0 [ 51.976841] ? do_vfs_ioctl+0xff0/0xff0 [ 51.980791] do_syscall_64+0x1d5/0x640 [ 51.984657] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 51.989820] RIP: 0033:0x7f00d84b8cf9 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 51.993505] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 52.001187] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 52.008434] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 52.015850] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 52.023104] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 52.030360] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 52.043843] FAULT_INJECTION: forcing a failure. [ 52.043843] name failslab, interval 1, probability 0, space 0, times 0 [ 52.055304] CPU: 1 PID: 8045 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 52.063173] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 52.072508] Call Trace: [ 52.075077] dump_stack+0x1b2/0x281 [ 52.078683] should_fail.cold+0x10a/0x149 [ 52.082806] should_failslab+0xd6/0x130 [ 52.086764] __kmalloc+0x2c1/0x400 [ 52.090277] ? __kfifo_alloc+0xdc/0x240 [ 52.094225] __kfifo_alloc+0xdc/0x240 [ 52.098003] gsm_dlci_alloc+0xd4/0x460 [ 52.101864] gsm_activate_mux+0x22e/0x2e0 [ 52.105989] gsmld_open+0x4ed/0x7b0 [ 52.109697] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 52.113916] tty_ldisc_open+0x6c/0xb0 [ 52.117698] tty_set_ldisc+0x287/0x5d0 [ 52.121578] tty_ioctl+0xa2a/0x1430 [ 52.125199] ? tty_fasync+0x2c0/0x2c0 [ 52.128980] ? proc_fail_nth_write+0x7b/0x180 [ 52.133453] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 52.138376] ? _raw_spin_unlock+0x29/0x40 [ 52.142504] ? do_fault_around+0x35e/0x620 [ 52.146718] ? fsnotify+0x974/0x11b0 [ 52.150416] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 52.155320] ? __handle_mm_fault+0x80f/0x4620 [ 52.159796] ? tty_fasync+0x2c0/0x2c0 [ 52.163573] do_vfs_ioctl+0x75a/0xff0 [ 52.167363] ? ioctl_preallocate+0x1a0/0x1a0 [ 52.171749] ? vfs_write+0x319/0x4d0 [ 52.175456] ? SyS_write+0x14d/0x210 [ 52.179148] ? security_file_ioctl+0x83/0xb0 [ 52.183534] SyS_ioctl+0x7f/0xb0 [ 52.186880] ? do_vfs_ioctl+0xff0/0xff0 [ 52.190828] do_syscall_64+0x1d5/0x640 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 52.194700] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 52.199862] RIP: 0033:0x7f00d84b8cf9 [ 52.203549] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 52.211229] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 52.218472] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 52.225715] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 52.232957] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 52.240211] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 52.253358] FAULT_INJECTION: forcing a failure. [ 52.253358] name failslab, interval 1, probability 0, space 0, times 0 [ 52.264606] CPU: 1 PID: 8046 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 52.272473] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 52.281800] Call Trace: [ 52.284388] dump_stack+0x1b2/0x281 [ 52.287990] should_fail.cold+0x10a/0x149 [ 52.292113] should_failslab+0xd6/0x130 [ 52.296063] __kmalloc+0x2c1/0x400 [ 52.299576] ? __kfifo_alloc+0xdc/0x240 [ 52.303524] __kfifo_alloc+0xdc/0x240 [ 52.307299] gsm_dlci_alloc+0xd4/0x460 [ 52.311163] gsm_activate_mux+0x22e/0x2e0 [ 52.315284] gsmld_open+0x4ed/0x7b0 [ 52.318884] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 52.323100] tty_ldisc_open+0x6c/0xb0 [ 52.326901] tty_set_ldisc+0x287/0x5d0 [ 52.330778] tty_ioctl+0xa2a/0x1430 [ 52.334385] ? tty_fasync+0x2c0/0x2c0 [ 52.338166] ? proc_fail_nth_write+0x7b/0x180 [ 52.342636] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 52.347553] ? _raw_spin_unlock+0x29/0x40 [ 52.351672] ? do_fault_around+0x35e/0x620 [ 52.355970] ? fsnotify+0x974/0x11b0 [ 52.359658] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 52.364561] ? __handle_mm_fault+0x80f/0x4620 [ 52.369033] ? tty_fasync+0x2c0/0x2c0 [ 52.372895] do_vfs_ioctl+0x75a/0xff0 [ 52.376674] ? ioctl_preallocate+0x1a0/0x1a0 [ 52.381063] ? vfs_write+0x319/0x4d0 [ 52.384752] ? SyS_write+0x14d/0x210 [ 52.388438] ? security_file_ioctl+0x83/0xb0 [ 52.392828] SyS_ioctl+0x7f/0xb0 [ 52.396165] ? do_vfs_ioctl+0xff0/0xff0 [ 52.400113] do_syscall_64+0x1d5/0x640 [ 52.403975] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 52.409139] RIP: 0033:0x7f00d84b8cf9 [ 52.412824] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 52.420502] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 52.427745] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 52.434988] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 52.442326] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 52.449571] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 52.463366] FAULT_INJECTION: forcing a failure. [ 52.463366] name failslab, interval 1, probability 0, space 0, times 0 [ 52.474784] CPU: 1 PID: 8047 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 52.482642] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 52.491985] Call Trace: [ 52.494554] dump_stack+0x1b2/0x281 [ 52.498158] should_fail.cold+0x10a/0x149 [ 52.502295] should_failslab+0xd6/0x130 [ 52.506248] __kmalloc+0x2c1/0x400 [ 52.509768] ? __kfifo_alloc+0xdc/0x240 [ 52.513715] __kfifo_alloc+0xdc/0x240 [ 52.517492] gsm_dlci_alloc+0xd4/0x460 [ 52.521354] gsm_activate_mux+0x22e/0x2e0 [ 52.525475] gsmld_open+0x4ed/0x7b0 [ 52.529088] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 52.533294] tty_ldisc_open+0x6c/0xb0 [ 52.537068] tty_set_ldisc+0x287/0x5d0 [ 52.540930] tty_ioctl+0xa2a/0x1430 [ 52.544542] ? tty_fasync+0x2c0/0x2c0 [ 52.548315] ? proc_fail_nth_write+0x7b/0x180 [ 52.552784] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 52.557784] ? _raw_spin_unlock+0x29/0x40 [ 52.561921] ? do_fault_around+0x35e/0x620 [ 52.566142] ? fsnotify+0x974/0x11b0 [ 52.569857] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 52.574768] ? __handle_mm_fault+0x80f/0x4620 [ 52.579241] ? tty_fasync+0x2c0/0x2c0 [ 52.583023] do_vfs_ioctl+0x75a/0xff0 [ 52.586807] ? ioctl_preallocate+0x1a0/0x1a0 [ 52.591207] ? vfs_write+0x319/0x4d0 [ 52.594902] ? SyS_write+0x14d/0x210 [ 52.598610] ? security_file_ioctl+0x83/0xb0 [ 52.603006] SyS_ioctl+0x7f/0xb0 [ 52.606357] ? do_vfs_ioctl+0xff0/0xff0 [ 52.610308] do_syscall_64+0x1d5/0x640 [ 52.614304] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 52.619484] RIP: 0033:0x7f00d84b8cf9 [ 52.623175] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 52.630885] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 52.638138] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 52.645382] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 52.652629] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 52.659874] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 52.672186] FAULT_INJECTION: forcing a failure. [ 52.672186] name failslab, interval 1, probability 0, space 0, times 0 [ 52.683571] CPU: 1 PID: 8048 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 52.691431] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 52.700762] Call Trace: [ 52.703332] dump_stack+0x1b2/0x281 [ 52.706945] should_fail.cold+0x10a/0x149 [ 52.711078] should_failslab+0xd6/0x130 [ 52.715028] __kmalloc+0x2c1/0x400 [ 52.718543] ? __kfifo_alloc+0xdc/0x240 [ 52.722508] __kfifo_alloc+0xdc/0x240 [ 52.726299] gsm_dlci_alloc+0xd4/0x460 [ 52.730173] gsm_activate_mux+0x22e/0x2e0 [ 52.734294] gsmld_open+0x4ed/0x7b0 [ 52.737898] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 52.742106] tty_ldisc_open+0x6c/0xb0 [ 52.745885] tty_set_ldisc+0x287/0x5d0 [ 52.749769] tty_ioctl+0xa2a/0x1430 [ 52.753379] ? tty_fasync+0x2c0/0x2c0 [ 52.757155] ? proc_fail_nth_write+0x7b/0x180 [ 52.761646] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 52.766649] ? _raw_spin_unlock+0x29/0x40 [ 52.770895] ? do_fault_around+0x35e/0x620 [ 52.775135] ? fsnotify+0x974/0x11b0 [ 52.778827] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 52.783833] ? __handle_mm_fault+0x80f/0x4620 [ 52.788308] ? tty_fasync+0x2c0/0x2c0 [ 52.792102] do_vfs_ioctl+0x75a/0xff0 [ 52.795925] ? ioctl_preallocate+0x1a0/0x1a0 [ 52.800313] ? vfs_write+0x319/0x4d0 [ 52.804002] ? SyS_write+0x14d/0x210 [ 52.807690] ? security_file_ioctl+0x83/0xb0 [ 52.812074] SyS_ioctl+0x7f/0xb0 [ 52.815418] ? do_vfs_ioctl+0xff0/0xff0 [ 52.819370] do_syscall_64+0x1d5/0x640 [ 52.823245] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 52.828427] RIP: 0033:0x7f00d84b8cf9 [ 52.832901] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 52.840597] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 52.847843] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 52.855087] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 52.862330] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 52.869575] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 52.882050] FAULT_INJECTION: forcing a failure. [ 52.882050] name failslab, interval 1, probability 0, space 0, times 0 [ 52.893293] CPU: 1 PID: 8049 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 52.901233] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 52.910559] Call Trace: [ 52.913135] dump_stack+0x1b2/0x281 [ 52.917265] should_fail.cold+0x10a/0x149 [ 52.921410] should_failslab+0xd6/0x130 [ 52.925482] __kmalloc+0x2c1/0x400 [ 52.929522] ? __kfifo_alloc+0xdc/0x240 [ 52.933482] __kfifo_alloc+0xdc/0x240 [ 52.937283] gsm_dlci_alloc+0xd4/0x460 [ 52.941266] gsm_activate_mux+0x22e/0x2e0 [ 52.945401] gsmld_open+0x4ed/0x7b0 [ 52.949034] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 52.953246] tty_ldisc_open+0x6c/0xb0 [ 52.957023] tty_set_ldisc+0x287/0x5d0 [ 52.960986] tty_ioctl+0xa2a/0x1430 [ 52.964766] ? tty_fasync+0x2c0/0x2c0 [ 52.968639] ? proc_fail_nth_write+0x7b/0x180 [ 52.973130] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 52.978032] ? _raw_spin_unlock+0x29/0x40 [ 52.982150] ? do_fault_around+0x35e/0x620 [ 52.986369] ? fsnotify+0x974/0x11b0 [ 52.990082] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 52.994983] ? __handle_mm_fault+0x80f/0x4620 [ 52.999468] ? tty_fasync+0x2c0/0x2c0 [ 53.003245] do_vfs_ioctl+0x75a/0xff0 [ 53.007027] ? ioctl_preallocate+0x1a0/0x1a0 [ 53.011430] ? vfs_write+0x319/0x4d0 [ 53.015118] ? SyS_write+0x14d/0x210 [ 53.018806] ? security_file_ioctl+0x83/0xb0 [ 53.023187] SyS_ioctl+0x7f/0xb0 [ 53.026525] ? do_vfs_ioctl+0xff0/0xff0 [ 53.030473] do_syscall_64+0x1d5/0x640 [ 53.034336] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 53.039513] RIP: 0033:0x7f00d84b8cf9 [ 53.043194] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 53.050882] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 53.058209] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 53.065459] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 53.072972] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 53.080225] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 53.093981] FAULT_INJECTION: forcing a failure. [ 53.093981] name failslab, interval 1, probability 0, space 0, times 0 [ 53.105250] CPU: 1 PID: 8050 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 53.113110] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 53.122443] Call Trace: [ 53.125008] dump_stack+0x1b2/0x281 [ 53.128616] should_fail.cold+0x10a/0x149 [ 53.132742] should_failslab+0xd6/0x130 [ 53.136690] __kmalloc+0x2c1/0x400 [ 53.140205] ? __kfifo_alloc+0xdc/0x240 [ 53.144151] __kfifo_alloc+0xdc/0x240 [ 53.147943] gsm_dlci_alloc+0xd4/0x460 [ 53.151805] gsm_activate_mux+0x22e/0x2e0 [ 53.155929] gsmld_open+0x4ed/0x7b0 [ 53.159531] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 53.163741] tty_ldisc_open+0x6c/0xb0 [ 53.167516] tty_set_ldisc+0x287/0x5d0 [ 53.171396] tty_ioctl+0xa2a/0x1430 [ 53.175003] ? tty_fasync+0x2c0/0x2c0 [ 53.178778] ? proc_fail_nth_write+0x7b/0x180 [ 53.183245] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 53.188145] ? _raw_spin_unlock+0x29/0x40 [ 53.192266] ? do_fault_around+0x35e/0x620 [ 53.196498] ? fsnotify+0x974/0x11b0 [ 53.200183] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 53.205085] ? __handle_mm_fault+0x80f/0x4620 [ 53.209556] ? tty_fasync+0x2c0/0x2c0 [ 53.213330] do_vfs_ioctl+0x75a/0xff0 [ 53.217106] ? ioctl_preallocate+0x1a0/0x1a0 [ 53.221488] ? vfs_write+0x319/0x4d0 [ 53.225176] ? SyS_write+0x14d/0x210 [ 53.228865] ? security_file_ioctl+0x83/0xb0 [ 53.233248] SyS_ioctl+0x7f/0xb0 [ 53.236585] ? do_vfs_ioctl+0xff0/0xff0 [ 53.240538] do_syscall_64+0x1d5/0x640 [ 53.244418] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 53.249581] RIP: 0033:0x7f00d84b8cf9 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 53.253267] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 53.260954] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 53.268287] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 53.275531] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 53.282774] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 53.290015] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 53.302864] FAULT_INJECTION: forcing a failure. [ 53.302864] name failslab, interval 1, probability 0, space 0, times 0 [ 53.314258] CPU: 1 PID: 8051 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 53.322123] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 53.331453] Call Trace: [ 53.334017] dump_stack+0x1b2/0x281 [ 53.337623] should_fail.cold+0x10a/0x149 [ 53.341746] should_failslab+0xd6/0x130 [ 53.345696] __kmalloc+0x2c1/0x400 [ 53.349222] ? __kfifo_alloc+0xdc/0x240 [ 53.353183] __kfifo_alloc+0xdc/0x240 [ 53.356962] gsm_dlci_alloc+0xd4/0x460 [ 53.360821] gsm_activate_mux+0x22e/0x2e0 [ 53.364941] gsmld_open+0x4ed/0x7b0 [ 53.368540] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 53.372804] tty_ldisc_open+0x6c/0xb0 [ 53.376589] tty_set_ldisc+0x287/0x5d0 [ 53.380547] tty_ioctl+0xa2a/0x1430 [ 53.384164] ? tty_fasync+0x2c0/0x2c0 [ 53.387951] ? proc_fail_nth_write+0x7b/0x180 [ 53.392421] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 53.397324] ? _raw_spin_unlock+0x29/0x40 [ 53.401465] ? do_fault_around+0x35e/0x620 [ 53.405778] ? fsnotify+0x974/0x11b0 [ 53.409474] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 53.414375] ? __handle_mm_fault+0x80f/0x4620 [ 53.418847] ? tty_fasync+0x2c0/0x2c0 [ 53.422627] do_vfs_ioctl+0x75a/0xff0 [ 53.426412] ? ioctl_preallocate+0x1a0/0x1a0 [ 53.430813] ? vfs_write+0x319/0x4d0 [ 53.434500] ? SyS_write+0x14d/0x210 [ 53.438187] ? security_file_ioctl+0x83/0xb0 [ 53.442568] SyS_ioctl+0x7f/0xb0 [ 53.445914] ? do_vfs_ioctl+0xff0/0xff0 [ 53.449864] do_syscall_64+0x1d5/0x640 [ 53.453730] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 53.458893] RIP: 0033:0x7f00d84b8cf9 [ 53.462579] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 53.470257] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 53.477497] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 53.484739] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 53.491982] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 53.499224] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 53.513137] FAULT_INJECTION: forcing a failure. [ 53.513137] name failslab, interval 1, probability 0, space 0, times 0 [ 53.524422] CPU: 1 PID: 8052 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 53.532278] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 53.541606] Call Trace: [ 53.544170] dump_stack+0x1b2/0x281 [ 53.547773] should_fail.cold+0x10a/0x149 [ 53.551899] should_failslab+0xd6/0x130 [ 53.555850] __kmalloc+0x2c1/0x400 [ 53.559369] ? __kfifo_alloc+0xdc/0x240 [ 53.563321] __kfifo_alloc+0xdc/0x240 [ 53.567097] gsm_dlci_alloc+0xd4/0x460 [ 53.570956] gsm_activate_mux+0x22e/0x2e0 [ 53.575074] gsmld_open+0x4ed/0x7b0 [ 53.578673] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 53.582882] tty_ldisc_open+0x6c/0xb0 [ 53.586657] tty_set_ldisc+0x287/0x5d0 [ 53.590522] tty_ioctl+0xa2a/0x1430 [ 53.594124] ? tty_fasync+0x2c0/0x2c0 [ 53.598072] ? proc_fail_nth_write+0x7b/0x180 [ 53.602543] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 53.607444] ? _raw_spin_unlock+0x29/0x40 [ 53.611564] ? do_fault_around+0x35e/0x620 [ 53.615778] ? fsnotify+0x974/0x11b0 [ 53.619473] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 53.624463] ? __handle_mm_fault+0x80f/0x4620 [ 53.628934] ? tty_fasync+0x2c0/0x2c0 [ 53.632707] do_vfs_ioctl+0x75a/0xff0 [ 53.636484] ? ioctl_preallocate+0x1a0/0x1a0 [ 53.640870] ? vfs_write+0x319/0x4d0 [ 53.644561] ? SyS_write+0x14d/0x210 [ 53.648250] ? security_file_ioctl+0x83/0xb0 [ 53.652631] SyS_ioctl+0x7f/0xb0 [ 53.655973] ? do_vfs_ioctl+0xff0/0xff0 [ 53.659926] do_syscall_64+0x1d5/0x640 [ 53.663795] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 53.668961] RIP: 0033:0x7f00d84b8cf9 [ 53.672650] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 53.680343] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 53.687597] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 53.694838] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 53.702080] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 53.709330] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 53.722170] FAULT_INJECTION: forcing a failure. [ 53.722170] name failslab, interval 1, probability 0, space 0, times 0 [ 53.733567] CPU: 1 PID: 8053 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 53.741437] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 53.750765] Call Trace: [ 53.753328] dump_stack+0x1b2/0x281 [ 53.756933] should_fail.cold+0x10a/0x149 [ 53.761055] should_failslab+0xd6/0x130 [ 53.765008] __kmalloc+0x2c1/0x400 [ 53.768528] ? __kfifo_alloc+0xdc/0x240 [ 53.772476] __kfifo_alloc+0xdc/0x240 [ 53.776254] gsm_dlci_alloc+0xd4/0x460 [ 53.780113] gsm_activate_mux+0x22e/0x2e0 [ 53.784247] gsmld_open+0x4ed/0x7b0 [ 53.787862] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 53.792071] tty_ldisc_open+0x6c/0xb0 [ 53.795851] tty_set_ldisc+0x287/0x5d0 [ 53.799722] tty_ioctl+0xa2a/0x1430 [ 53.803331] ? tty_fasync+0x2c0/0x2c0 [ 53.807112] ? proc_fail_nth_write+0x7b/0x180 [ 53.811671] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 53.816580] ? _raw_spin_unlock+0x29/0x40 [ 53.820712] ? do_fault_around+0x35e/0x620 [ 53.824924] ? fsnotify+0x974/0x11b0 [ 53.828616] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 53.833527] ? __handle_mm_fault+0x80f/0x4620 [ 53.838009] ? tty_fasync+0x2c0/0x2c0 [ 53.841796] do_vfs_ioctl+0x75a/0xff0 [ 53.845576] ? ioctl_preallocate+0x1a0/0x1a0 [ 53.849965] ? vfs_write+0x319/0x4d0 [ 53.853654] ? SyS_write+0x14d/0x210 [ 53.857347] ? security_file_ioctl+0x83/0xb0 [ 53.861730] SyS_ioctl+0x7f/0xb0 [ 53.865070] ? do_vfs_ioctl+0xff0/0xff0 [ 53.869038] do_syscall_64+0x1d5/0x640 [ 53.872921] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 53.878086] RIP: 0033:0x7f00d84b8cf9 [ 53.881782] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 53.889465] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 53.896779] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 53.904027] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 53.911271] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 53.918516] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 53.930793] FAULT_INJECTION: forcing a failure. [ 53.930793] name failslab, interval 1, probability 0, space 0, times 0 [ 53.942008] CPU: 1 PID: 8054 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 53.949971] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 53.959302] Call Trace: [ 53.961869] dump_stack+0x1b2/0x281 [ 53.965573] should_fail.cold+0x10a/0x149 [ 53.969697] should_failslab+0xd6/0x130 [ 53.973644] __kmalloc+0x2c1/0x400 [ 53.977174] ? __kfifo_alloc+0xdc/0x240 [ 53.981122] __kfifo_alloc+0xdc/0x240 [ 53.984899] gsm_dlci_alloc+0xd4/0x460 [ 53.988760] gsm_activate_mux+0x22e/0x2e0 [ 53.992879] gsmld_open+0x4ed/0x7b0 [ 53.996479] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 54.000688] tty_ldisc_open+0x6c/0xb0 [ 54.004462] tty_set_ldisc+0x287/0x5d0 [ 54.008326] tty_ioctl+0xa2a/0x1430 [ 54.011925] ? tty_fasync+0x2c0/0x2c0 [ 54.015705] ? proc_fail_nth_write+0x7b/0x180 [ 54.020175] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 54.025078] ? _raw_spin_unlock+0x29/0x40 [ 54.029306] ? do_fault_around+0x35e/0x620 [ 54.033518] ? fsnotify+0x974/0x11b0 [ 54.037203] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 54.042104] ? __handle_mm_fault+0x80f/0x4620 [ 54.046576] ? tty_fasync+0x2c0/0x2c0 [ 54.050357] do_vfs_ioctl+0x75a/0xff0 [ 54.054141] ? ioctl_preallocate+0x1a0/0x1a0 [ 54.058523] ? vfs_write+0x319/0x4d0 [ 54.062211] ? SyS_write+0x14d/0x210 [ 54.065916] ? security_file_ioctl+0x83/0xb0 [ 54.070309] SyS_ioctl+0x7f/0xb0 [ 54.073656] ? do_vfs_ioctl+0xff0/0xff0 [ 54.077604] do_syscall_64+0x1d5/0x640 [ 54.081468] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 54.086633] RIP: 0033:0x7f00d84b8cf9 [ 54.090320] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 54.098001] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 54.105243] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 54.112492] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 54.119754] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 54.126995] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 54.140683] FAULT_INJECTION: forcing a failure. [ 54.140683] name failslab, interval 1, probability 0, space 0, times 0 [ 54.152110] CPU: 1 PID: 8055 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 54.159965] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 54.169294] Call Trace: [ 54.171855] dump_stack+0x1b2/0x281 [ 54.175460] should_fail.cold+0x10a/0x149 [ 54.179587] should_failslab+0xd6/0x130 [ 54.183536] __kmalloc+0x2c1/0x400 [ 54.187050] ? __kfifo_alloc+0xdc/0x240 [ 54.190999] __kfifo_alloc+0xdc/0x240 [ 54.194790] gsm_dlci_alloc+0xd4/0x460 [ 54.198651] gsm_activate_mux+0x22e/0x2e0 [ 54.202774] gsmld_open+0x4ed/0x7b0 [ 54.206399] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 54.210609] tty_ldisc_open+0x6c/0xb0 [ 54.214384] tty_set_ldisc+0x287/0x5d0 [ 54.218246] tty_ioctl+0xa2a/0x1430 [ 54.221846] ? tty_fasync+0x2c0/0x2c0 [ 54.225629] ? proc_fail_nth_write+0x7b/0x180 [ 54.230097] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 54.234999] ? _raw_spin_unlock+0x29/0x40 [ 54.239121] ? do_fault_around+0x35e/0x620 [ 54.243340] ? fsnotify+0x974/0x11b0 [ 54.247027] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 54.251930] ? __handle_mm_fault+0x80f/0x4620 [ 54.256412] ? tty_fasync+0x2c0/0x2c0 [ 54.260186] do_vfs_ioctl+0x75a/0xff0 [ 54.263966] ? ioctl_preallocate+0x1a0/0x1a0 [ 54.268359] ? vfs_write+0x319/0x4d0 [ 54.272060] ? SyS_write+0x14d/0x210 [ 54.275747] ? security_file_ioctl+0x83/0xb0 [ 54.280128] SyS_ioctl+0x7f/0xb0 [ 54.283467] ? do_vfs_ioctl+0xff0/0xff0 [ 54.287428] do_syscall_64+0x1d5/0x640 [ 54.291294] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 54.296463] RIP: 0033:0x7f00d84b8cf9 [ 54.300148] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 54.307831] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 54.315074] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 54.322315] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 54.329558] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 54.336802] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 54.350518] FAULT_INJECTION: forcing a failure. [ 54.350518] name failslab, interval 1, probability 0, space 0, times 0 [ 54.361818] CPU: 1 PID: 8056 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 54.369681] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 54.379009] Call Trace: [ 54.381572] dump_stack+0x1b2/0x281 [ 54.385174] should_fail.cold+0x10a/0x149 [ 54.389296] should_failslab+0xd6/0x130 [ 54.393249] __kmalloc+0x2c1/0x400 [ 54.396768] ? __kfifo_alloc+0xdc/0x240 [ 54.400810] __kfifo_alloc+0xdc/0x240 [ 54.404585] gsm_dlci_alloc+0xd4/0x460 [ 54.408449] gsm_activate_mux+0x22e/0x2e0 [ 54.412576] gsmld_open+0x4ed/0x7b0 [ 54.416181] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 54.420389] tty_ldisc_open+0x6c/0xb0 [ 54.424164] tty_set_ldisc+0x287/0x5d0 [ 54.428042] tty_ioctl+0xa2a/0x1430 [ 54.431642] ? tty_fasync+0x2c0/0x2c0 [ 54.435503] ? proc_fail_nth_write+0x7b/0x180 [ 54.439970] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 54.444872] ? _raw_spin_unlock+0x29/0x40 [ 54.449002] ? do_fault_around+0x35e/0x620 [ 54.453213] ? fsnotify+0x974/0x11b0 [ 54.456897] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 54.461804] ? __handle_mm_fault+0x80f/0x4620 [ 54.466277] ? tty_fasync+0x2c0/0x2c0 [ 54.470057] do_vfs_ioctl+0x75a/0xff0 [ 54.473843] ? ioctl_preallocate+0x1a0/0x1a0 [ 54.478226] ? vfs_write+0x319/0x4d0 [ 54.481913] ? SyS_write+0x14d/0x210 [ 54.485612] ? security_file_ioctl+0x83/0xb0 [ 54.489996] SyS_ioctl+0x7f/0xb0 [ 54.493333] ? do_vfs_ioctl+0xff0/0xff0 [ 54.497282] do_syscall_64+0x1d5/0x640 [ 54.501147] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 54.506308] RIP: 0033:0x7f00d84b8cf9 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 54.510009] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 54.518530] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 54.525772] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 54.533016] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 54.540257] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 54.547503] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 54.561189] FAULT_INJECTION: forcing a failure. [ 54.561189] name failslab, interval 1, probability 0, space 0, times 0 [ 54.572679] CPU: 1 PID: 8057 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 54.580543] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 54.589881] Call Trace: [ 54.592448] dump_stack+0x1b2/0x281 [ 54.596062] should_fail.cold+0x10a/0x149 [ 54.600273] should_failslab+0xd6/0x130 [ 54.604220] __kmalloc+0x2c1/0x400 [ 54.607737] ? __kfifo_alloc+0xdc/0x240 [ 54.611693] __kfifo_alloc+0xdc/0x240 [ 54.615496] gsm_dlci_alloc+0xd4/0x460 [ 54.619409] gsm_activate_mux+0x22e/0x2e0 [ 54.623540] gsmld_open+0x4ed/0x7b0 [ 54.627143] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 54.631364] tty_ldisc_open+0x6c/0xb0 [ 54.635147] tty_set_ldisc+0x287/0x5d0 [ 54.639022] tty_ioctl+0xa2a/0x1430 [ 54.642661] ? tty_fasync+0x2c0/0x2c0 [ 54.646452] ? proc_fail_nth_write+0x7b/0x180 [ 54.651277] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 54.656183] ? _raw_spin_unlock+0x29/0x40 [ 54.660303] ? do_fault_around+0x35e/0x620 [ 54.664519] ? fsnotify+0x974/0x11b0 [ 54.668212] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 54.673116] ? __handle_mm_fault+0x80f/0x4620 [ 54.677586] ? tty_fasync+0x2c0/0x2c0 [ 54.681371] do_vfs_ioctl+0x75a/0xff0 [ 54.685149] ? ioctl_preallocate+0x1a0/0x1a0 [ 54.689545] ? vfs_write+0x319/0x4d0 [ 54.693237] ? SyS_write+0x14d/0x210 [ 54.696929] ? security_file_ioctl+0x83/0xb0 [ 54.701312] SyS_ioctl+0x7f/0xb0 [ 54.704651] ? do_vfs_ioctl+0xff0/0xff0 [ 54.708695] do_syscall_64+0x1d5/0x640 [ 54.712570] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 54.717740] RIP: 0033:0x7f00d84b8cf9 [ 54.721423] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 54.729107] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 54.736353] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 54.743778] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 54.751023] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 54.758268] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 54.771979] FAULT_INJECTION: forcing a failure. [ 54.771979] name failslab, interval 1, probability 0, space 0, times 0 [ 54.783379] CPU: 1 PID: 8058 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 54.791236] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 54.800664] Call Trace: [ 54.803238] dump_stack+0x1b2/0x281 [ 54.806854] should_fail.cold+0x10a/0x149 [ 54.810998] should_failslab+0xd6/0x130 [ 54.814965] __kmalloc+0x2c1/0x400 [ 54.818574] ? __kfifo_alloc+0xdc/0x240 [ 54.822536] __kfifo_alloc+0xdc/0x240 [ 54.826317] gsm_dlci_alloc+0xd4/0x460 [ 54.830181] gsm_activate_mux+0x22e/0x2e0 [ 54.834307] gsmld_open+0x4ed/0x7b0 [ 54.837908] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 54.842114] tty_ldisc_open+0x6c/0xb0 [ 54.845889] tty_set_ldisc+0x287/0x5d0 [ 54.849750] tty_ioctl+0xa2a/0x1430 [ 54.853354] ? tty_fasync+0x2c0/0x2c0 [ 54.857129] ? proc_fail_nth_write+0x7b/0x180 [ 54.861642] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 54.866548] ? _raw_spin_unlock+0x29/0x40 [ 54.870682] ? do_fault_around+0x35e/0x620 [ 54.874895] ? fsnotify+0x974/0x11b0 [ 54.878581] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 54.883487] ? __handle_mm_fault+0x80f/0x4620 [ 54.887957] ? tty_fasync+0x2c0/0x2c0 [ 54.891733] do_vfs_ioctl+0x75a/0xff0 [ 54.895508] ? ioctl_preallocate+0x1a0/0x1a0 [ 54.899890] ? vfs_write+0x319/0x4d0 [ 54.903580] ? SyS_write+0x14d/0x210 [ 54.907272] ? security_file_ioctl+0x83/0xb0 [ 54.911654] SyS_ioctl+0x7f/0xb0 [ 54.914991] ? do_vfs_ioctl+0xff0/0xff0 [ 54.918952] do_syscall_64+0x1d5/0x640 [ 54.922829] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 54.927994] RIP: 0033:0x7f00d84b8cf9 [ 54.931675] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 54.939356] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 54.946598] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 54.953838] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 54.961092] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 54.968338] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 54.980524] FAULT_INJECTION: forcing a failure. [ 54.980524] name failslab, interval 1, probability 0, space 0, times 0 [ 54.991787] CPU: 1 PID: 8059 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 54.999651] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 55.008979] Call Trace: [ 55.011653] dump_stack+0x1b2/0x281 [ 55.015258] should_fail.cold+0x10a/0x149 [ 55.019396] should_failslab+0xd6/0x130 [ 55.023344] __kmalloc+0x2c1/0x400 [ 55.026881] ? __kfifo_alloc+0xdc/0x240 [ 55.030836] __kfifo_alloc+0xdc/0x240 [ 55.034613] gsm_dlci_alloc+0xd4/0x460 [ 55.038476] gsm_activate_mux+0x22e/0x2e0 [ 55.042596] gsmld_open+0x4ed/0x7b0 [ 55.046195] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 55.050406] tty_ldisc_open+0x6c/0xb0 [ 55.054183] tty_set_ldisc+0x287/0x5d0 [ 55.058049] tty_ioctl+0xa2a/0x1430 [ 55.061668] ? tty_fasync+0x2c0/0x2c0 [ 55.065448] ? proc_fail_nth_write+0x7b/0x180 [ 55.069945] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 55.074850] ? _raw_spin_unlock+0x29/0x40 [ 55.078974] ? do_fault_around+0x35e/0x620 [ 55.083189] ? fsnotify+0x974/0x11b0 [ 55.086879] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 55.091783] ? __handle_mm_fault+0x80f/0x4620 [ 55.096257] ? tty_fasync+0x2c0/0x2c0 [ 55.100037] do_vfs_ioctl+0x75a/0xff0 [ 55.103824] ? ioctl_preallocate+0x1a0/0x1a0 [ 55.108393] ? vfs_write+0x319/0x4d0 [ 55.112470] ? SyS_write+0x14d/0x210 [ 55.116241] ? security_file_ioctl+0x83/0xb0 [ 55.122421] SyS_ioctl+0x7f/0xb0 [ 55.126302] ? do_vfs_ioctl+0xff0/0xff0 [ 55.130777] do_syscall_64+0x1d5/0x640 [ 55.135315] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 55.140845] RIP: 0033:0x7f00d84b8cf9 [ 55.145439] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 55.154103] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 55.161639] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 55.169287] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 55.176547] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 55.184965] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 55.199845] FAULT_INJECTION: forcing a failure. [ 55.199845] name failslab, interval 1, probability 0, space 0, times 0 [ 55.211688] CPU: 1 PID: 8060 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 55.220256] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 55.230046] Call Trace: [ 55.232747] dump_stack+0x1b2/0x281 [ 55.236556] should_fail.cold+0x10a/0x149 [ 55.241319] should_failslab+0xd6/0x130 [ 55.245642] __kmalloc+0x2c1/0x400 [ 55.249164] ? __kfifo_alloc+0xdc/0x240 [ 55.253463] __kfifo_alloc+0xdc/0x240 [ 55.257634] gsm_dlci_alloc+0xd4/0x460 [ 55.261499] gsm_activate_mux+0x22e/0x2e0 [ 55.266012] gsmld_open+0x4ed/0x7b0 [ 55.269796] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 55.274208] tty_ldisc_open+0x6c/0xb0 [ 55.278578] tty_set_ldisc+0x287/0x5d0 [ 55.282545] tty_ioctl+0xa2a/0x1430 [ 55.286914] ? tty_fasync+0x2c0/0x2c0 [ 55.291149] ? proc_fail_nth_write+0x7b/0x180 [ 55.296204] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 55.302025] ? _raw_spin_unlock+0x29/0x40 [ 55.306645] ? do_fault_around+0x35e/0x620 [ 55.311674] ? fsnotify+0x974/0x11b0 [ 55.315570] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 55.320990] ? __handle_mm_fault+0x80f/0x4620 [ 55.325651] ? tty_fasync+0x2c0/0x2c0 [ 55.329709] do_vfs_ioctl+0x75a/0xff0 [ 55.333855] ? ioctl_preallocate+0x1a0/0x1a0 [ 55.338846] ? vfs_write+0x319/0x4d0 [ 55.342849] ? SyS_write+0x14d/0x210 [ 55.346688] ? security_file_ioctl+0x83/0xb0 [ 55.351915] SyS_ioctl+0x7f/0xb0 [ 55.355391] ? do_vfs_ioctl+0xff0/0xff0 [ 55.360304] do_syscall_64+0x1d5/0x640 [ 55.364372] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 55.369692] RIP: 0033:0x7f00d84b8cf9 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 55.373559] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 55.381856] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 55.389286] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 55.396986] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 55.405140] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 55.412883] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 55.427294] FAULT_INJECTION: forcing a failure. [ 55.427294] name failslab, interval 1, probability 0, space 0, times 0 [ 55.439246] CPU: 1 PID: 8061 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 55.447425] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 55.457926] Call Trace: [ 55.460518] dump_stack+0x1b2/0x281 [ 55.464131] should_fail.cold+0x10a/0x149 [ 55.468262] should_failslab+0xd6/0x130 [ 55.472216] __kmalloc+0x2c1/0x400 [ 55.475737] ? __kfifo_alloc+0xdc/0x240 [ 55.479684] __kfifo_alloc+0xdc/0x240 [ 55.483460] gsm_dlci_alloc+0xd4/0x460 [ 55.487330] gsm_activate_mux+0x22e/0x2e0 [ 55.491458] gsmld_open+0x4ed/0x7b0 [ 55.495067] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 55.500247] tty_ldisc_open+0x6c/0xb0 [ 55.504026] tty_set_ldisc+0x287/0x5d0 [ 55.507900] tty_ioctl+0xa2a/0x1430 [ 55.511513] ? tty_fasync+0x2c0/0x2c0 [ 55.515294] ? proc_fail_nth_write+0x7b/0x180 [ 55.519765] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 55.524685] ? _raw_spin_unlock+0x29/0x40 [ 55.528807] ? do_fault_around+0x35e/0x620 [ 55.533040] ? fsnotify+0x974/0x11b0 [ 55.536732] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 55.541636] ? __handle_mm_fault+0x80f/0x4620 [ 55.546114] ? tty_fasync+0x2c0/0x2c0 [ 55.549892] do_vfs_ioctl+0x75a/0xff0 [ 55.553742] ? ioctl_preallocate+0x1a0/0x1a0 [ 55.558136] ? vfs_write+0x319/0x4d0 [ 55.561827] ? SyS_write+0x14d/0x210 [ 55.565522] ? security_file_ioctl+0x83/0xb0 [ 55.569925] SyS_ioctl+0x7f/0xb0 [ 55.573270] ? do_vfs_ioctl+0xff0/0xff0 [ 55.577239] do_syscall_64+0x1d5/0x640 [ 55.581108] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 55.586272] RIP: 0033:0x7f00d84b8cf9 [ 55.589956] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 55.597637] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 55.605142] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 55.612383] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 55.619639] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 55.626880] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 55.640632] FAULT_INJECTION: forcing a failure. [ 55.640632] name failslab, interval 1, probability 0, space 0, times 0 [ 55.652022] CPU: 1 PID: 8062 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 55.659878] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 55.669203] Call Trace: [ 55.671768] dump_stack+0x1b2/0x281 [ 55.675394] should_fail.cold+0x10a/0x149 [ 55.679516] should_failslab+0xd6/0x130 [ 55.683469] __kmalloc+0x2c1/0x400 [ 55.686989] ? __kfifo_alloc+0xdc/0x240 [ 55.690939] __kfifo_alloc+0xdc/0x240 [ 55.694713] gsm_dlci_alloc+0xd4/0x460 [ 55.698572] gsm_activate_mux+0x22e/0x2e0 [ 55.702695] gsmld_open+0x4ed/0x7b0 [ 55.706298] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 55.710506] tty_ldisc_open+0x6c/0xb0 [ 55.714282] tty_set_ldisc+0x287/0x5d0 [ 55.718144] tty_ioctl+0xa2a/0x1430 [ 55.721832] ? tty_fasync+0x2c0/0x2c0 [ 55.725607] ? proc_fail_nth_write+0x7b/0x180 [ 55.730074] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 55.734977] ? _raw_spin_unlock+0x29/0x40 [ 55.739096] ? do_fault_around+0x35e/0x620 [ 55.743306] ? fsnotify+0x974/0x11b0 [ 55.746999] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 55.751920] ? __handle_mm_fault+0x80f/0x4620 [ 55.756392] ? tty_fasync+0x2c0/0x2c0 [ 55.760166] do_vfs_ioctl+0x75a/0xff0 [ 55.763943] ? ioctl_preallocate+0x1a0/0x1a0 [ 55.768334] ? vfs_write+0x319/0x4d0 [ 55.772034] ? SyS_write+0x14d/0x210 [ 55.775727] ? security_file_ioctl+0x83/0xb0 [ 55.780116] SyS_ioctl+0x7f/0xb0 [ 55.783456] ? do_vfs_ioctl+0xff0/0xff0 [ 55.787427] do_syscall_64+0x1d5/0x640 [ 55.791297] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 55.796463] RIP: 0033:0x7f00d84b8cf9 [ 55.800161] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 55.807850] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 55.815102] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 55.822548] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 55.829807] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 55.837148] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 55.850909] FAULT_INJECTION: forcing a failure. [ 55.850909] name failslab, interval 1, probability 0, space 0, times 0 [ 55.862144] CPU: 1 PID: 8063 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 55.870003] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 55.879331] Call Trace: [ 55.882006] dump_stack+0x1b2/0x281 [ 55.885615] should_fail.cold+0x10a/0x149 [ 55.889738] should_failslab+0xd6/0x130 [ 55.893702] __kmalloc+0x2c1/0x400 [ 55.897258] ? __kfifo_alloc+0xdc/0x240 [ 55.901206] __kfifo_alloc+0xdc/0x240 [ 55.904984] gsm_dlci_alloc+0xd4/0x460 [ 55.908846] gsm_activate_mux+0x22e/0x2e0 [ 55.912967] gsmld_open+0x4ed/0x7b0 [ 55.916567] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 55.920776] tty_ldisc_open+0x6c/0xb0 [ 55.924551] tty_set_ldisc+0x287/0x5d0 [ 55.928412] tty_ioctl+0xa2a/0x1430 [ 55.932014] ? tty_fasync+0x2c0/0x2c0 [ 55.935802] ? proc_fail_nth_write+0x7b/0x180 [ 55.940271] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 55.945170] ? _raw_spin_unlock+0x29/0x40 [ 55.949293] ? do_fault_around+0x35e/0x620 [ 55.953511] ? fsnotify+0x974/0x11b0 [ 55.957206] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 55.962105] ? __handle_mm_fault+0x80f/0x4620 [ 55.966574] ? tty_fasync+0x2c0/0x2c0 [ 55.970348] do_vfs_ioctl+0x75a/0xff0 [ 55.974124] ? ioctl_preallocate+0x1a0/0x1a0 [ 55.978507] ? vfs_write+0x319/0x4d0 [ 55.982196] ? SyS_write+0x14d/0x210 [ 55.985882] ? security_file_ioctl+0x83/0xb0 [ 55.990266] SyS_ioctl+0x7f/0xb0 [ 55.993602] ? do_vfs_ioctl+0xff0/0xff0 [ 55.997552] do_syscall_64+0x1d5/0x640 [ 56.001416] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 56.006579] RIP: 0033:0x7f00d84b8cf9 [ 56.010265] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 56.017945] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 56.025195] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 56.032438] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 56.039682] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 56.046927] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 56.059816] FAULT_INJECTION: forcing a failure. [ 56.059816] name failslab, interval 1, probability 0, space 0, times 0 [ 56.071250] CPU: 1 PID: 8064 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 56.079107] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 56.088433] Call Trace: [ 56.091003] dump_stack+0x1b2/0x281 [ 56.094612] should_fail.cold+0x10a/0x149 [ 56.098755] should_failslab+0xd6/0x130 [ 56.102712] __kmalloc+0x2c1/0x400 [ 56.106227] ? __kfifo_alloc+0xdc/0x240 [ 56.110175] __kfifo_alloc+0xdc/0x240 [ 56.113951] gsm_dlci_alloc+0xd4/0x460 [ 56.117813] gsm_activate_mux+0x22e/0x2e0 [ 56.121953] gsmld_open+0x4ed/0x7b0 [ 56.125554] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 56.129766] tty_ldisc_open+0x6c/0xb0 [ 56.133544] tty_set_ldisc+0x287/0x5d0 [ 56.137406] tty_ioctl+0xa2a/0x1430 [ 56.141005] ? tty_fasync+0x2c0/0x2c0 [ 56.144783] ? proc_fail_nth_write+0x7b/0x180 [ 56.149254] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 56.154165] ? _raw_spin_unlock+0x29/0x40 [ 56.158322] ? do_fault_around+0x35e/0x620 [ 56.162536] ? fsnotify+0x974/0x11b0 [ 56.166227] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 56.171140] ? __handle_mm_fault+0x80f/0x4620 [ 56.175612] ? tty_fasync+0x2c0/0x2c0 [ 56.179388] do_vfs_ioctl+0x75a/0xff0 [ 56.183191] ? ioctl_preallocate+0x1a0/0x1a0 [ 56.187584] ? vfs_write+0x319/0x4d0 [ 56.191277] ? SyS_write+0x14d/0x210 [ 56.194980] ? security_file_ioctl+0x83/0xb0 [ 56.199395] SyS_ioctl+0x7f/0xb0 [ 56.202751] ? do_vfs_ioctl+0xff0/0xff0 [ 56.206717] do_syscall_64+0x1d5/0x640 [ 56.210594] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 56.215758] RIP: 0033:0x7f00d84b8cf9 [ 56.219442] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 56.227123] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 56.234379] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 56.241626] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 56.248874] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 56.256121] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 56.269870] FAULT_INJECTION: forcing a failure. [ 56.269870] name failslab, interval 1, probability 0, space 0, times 0 [ 56.282260] CPU: 1 PID: 8065 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 56.290138] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 56.299565] Call Trace: [ 56.302148] dump_stack+0x1b2/0x281 [ 56.305781] should_fail.cold+0x10a/0x149 [ 56.310008] should_failslab+0xd6/0x130 [ 56.314002] __kmalloc+0x2c1/0x400 [ 56.317566] ? __kfifo_alloc+0xdc/0x240 [ 56.321556] __kfifo_alloc+0xdc/0x240 [ 56.325335] gsm_dlci_alloc+0xd4/0x460 [ 56.329203] gsm_activate_mux+0x22e/0x2e0 [ 56.333327] gsmld_open+0x4ed/0x7b0 [ 56.336929] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 56.341141] tty_ldisc_open+0x6c/0xb0 [ 56.345003] tty_set_ldisc+0x287/0x5d0 [ 56.348869] tty_ioctl+0xa2a/0x1430 [ 56.352517] ? tty_fasync+0x2c0/0x2c0 [ 56.356381] ? proc_fail_nth_write+0x7b/0x180 [ 56.360851] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 56.365951] ? _raw_spin_unlock+0x29/0x40 [ 56.370074] ? do_fault_around+0x35e/0x620 [ 56.374283] ? fsnotify+0x974/0x11b0 [ 56.377979] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 56.382878] ? __handle_mm_fault+0x80f/0x4620 [ 56.387348] ? tty_fasync+0x2c0/0x2c0 [ 56.391121] do_vfs_ioctl+0x75a/0xff0 [ 56.394915] ? ioctl_preallocate+0x1a0/0x1a0 [ 56.399299] ? vfs_write+0x319/0x4d0 [ 56.403042] ? SyS_write+0x14d/0x210 [ 56.406730] ? security_file_ioctl+0x83/0xb0 [ 56.411113] SyS_ioctl+0x7f/0xb0 [ 56.414452] ? do_vfs_ioctl+0xff0/0xff0 [ 56.418399] do_syscall_64+0x1d5/0x640 [ 56.422268] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 56.427451] RIP: 0033:0x7f00d84b8cf9 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 56.431142] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 56.438822] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 56.446064] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 56.453306] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 56.460557] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 56.467803] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 56.494110] FAULT_INJECTION: forcing a failure. [ 56.494110] name failslab, interval 1, probability 0, space 0, times 0 [ 56.506240] CPU: 0 PID: 8066 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 56.514115] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 56.523461] Call Trace: [ 56.526026] dump_stack+0x1b2/0x281 [ 56.529634] should_fail.cold+0x10a/0x149 [ 56.533767] should_failslab+0xd6/0x130 [ 56.537745] __kmalloc+0x2c1/0x400 [ 56.541529] ? __kfifo_alloc+0xdc/0x240 [ 56.545486] __kfifo_alloc+0xdc/0x240 [ 56.549271] gsm_dlci_alloc+0xd4/0x460 [ 56.553134] gsm_activate_mux+0x22e/0x2e0 [ 56.557427] gsmld_open+0x4ed/0x7b0 [ 56.561029] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 56.565245] tty_ldisc_open+0x6c/0xb0 [ 56.569022] tty_set_ldisc+0x287/0x5d0 [ 56.572887] tty_ioctl+0xa2a/0x1430 [ 56.576497] ? tty_fasync+0x2c0/0x2c0 [ 56.580274] ? proc_fail_nth_write+0x7b/0x180 [ 56.584745] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 56.589654] ? _raw_spin_unlock+0x29/0x40 [ 56.593778] ? do_fault_around+0x35e/0x620 [ 56.597987] ? fsnotify+0x974/0x11b0 [ 56.601676] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 56.606580] ? __handle_mm_fault+0x80f/0x4620 [ 56.611053] ? tty_fasync+0x2c0/0x2c0 [ 56.614828] do_vfs_ioctl+0x75a/0xff0 [ 56.618607] ? ioctl_preallocate+0x1a0/0x1a0 [ 56.622991] ? vfs_write+0x319/0x4d0 [ 56.626678] ? SyS_write+0x14d/0x210 [ 56.630365] ? security_file_ioctl+0x83/0xb0 [ 56.634761] SyS_ioctl+0x7f/0xb0 [ 56.638099] ? do_vfs_ioctl+0xff0/0xff0 [ 56.642046] do_syscall_64+0x1d5/0x640 [ 56.645910] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 56.651071] RIP: 0033:0x7f00d84b8cf9 [ 56.654752] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 56.662433] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 56.669675] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 56.676919] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 56.684160] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 56.691408] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 56.705390] FAULT_INJECTION: forcing a failure. [ 56.705390] name failslab, interval 1, probability 0, space 0, times 0 [ 56.716774] CPU: 0 PID: 8067 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 56.724638] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 56.733965] Call Trace: [ 56.736542] dump_stack+0x1b2/0x281 [ 56.740146] should_fail.cold+0x10a/0x149 [ 56.744271] should_failslab+0xd6/0x130 [ 56.748221] __kmalloc+0x2c1/0x400 [ 56.751736] ? __kfifo_alloc+0xdc/0x240 [ 56.755773] __kfifo_alloc+0xdc/0x240 [ 56.759549] gsm_dlci_alloc+0xd4/0x460 [ 56.763408] gsm_activate_mux+0x22e/0x2e0 [ 56.767538] gsmld_open+0x4ed/0x7b0 [ 56.771148] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 56.775355] tty_ldisc_open+0x6c/0xb0 [ 56.779141] tty_set_ldisc+0x287/0x5d0 [ 56.783006] tty_ioctl+0xa2a/0x1430 [ 56.786610] ? tty_fasync+0x2c0/0x2c0 [ 56.791674] ? proc_fail_nth_write+0x7b/0x180 [ 56.798394] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 56.808966] ? _raw_spin_unlock+0x29/0x40 [ 56.815349] ? do_fault_around+0x35e/0x620 [ 56.819946] ? fsnotify+0x974/0x11b0 [ 56.823644] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 56.828548] ? __handle_mm_fault+0x80f/0x4620 [ 56.833037] ? tty_fasync+0x2c0/0x2c0 [ 56.836814] do_vfs_ioctl+0x75a/0xff0 [ 56.840592] ? ioctl_preallocate+0x1a0/0x1a0 [ 56.844976] ? vfs_write+0x319/0x4d0 [ 56.848672] ? SyS_write+0x14d/0x210 [ 56.852359] ? security_file_ioctl+0x83/0xb0 [ 56.856741] SyS_ioctl+0x7f/0xb0 [ 56.860080] ? do_vfs_ioctl+0xff0/0xff0 [ 56.864030] do_syscall_64+0x1d5/0x640 [ 56.867906] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 56.873072] RIP: 0033:0x7f00d84b8cf9 [ 56.876755] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 56.884528] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 56.891771] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 56.899012] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 56.906254] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 56.915493] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 56.928457] FAULT_INJECTION: forcing a failure. [ 56.928457] name failslab, interval 1, probability 0, space 0, times 0 [ 56.939715] CPU: 0 PID: 8068 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 56.947575] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 56.956904] Call Trace: [ 56.959467] dump_stack+0x1b2/0x281 [ 56.963070] should_fail.cold+0x10a/0x149 [ 56.967193] should_failslab+0xd6/0x130 [ 56.971140] __kmalloc+0x2c1/0x400 [ 56.974654] ? __kfifo_alloc+0xdc/0x240 [ 56.978602] __kfifo_alloc+0xdc/0x240 [ 56.982381] gsm_dlci_alloc+0xd4/0x460 [ 56.986256] gsm_activate_mux+0x22e/0x2e0 [ 56.990403] gsmld_open+0x4ed/0x7b0 [ 56.994002] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 56.998211] tty_ldisc_open+0x6c/0xb0 [ 57.001984] tty_set_ldisc+0x287/0x5d0 [ 57.005846] tty_ioctl+0xa2a/0x1430 [ 57.009452] ? tty_fasync+0x2c0/0x2c0 [ 57.013234] ? proc_fail_nth_write+0x7b/0x180 [ 57.017703] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 57.022607] ? _raw_spin_unlock+0x29/0x40 [ 57.026730] ? do_fault_around+0x35e/0x620 [ 57.030940] ? fsnotify+0x974/0x11b0 [ 57.034627] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 57.039527] ? __handle_mm_fault+0x80f/0x4620 [ 57.043996] ? tty_fasync+0x2c0/0x2c0 [ 57.047769] do_vfs_ioctl+0x75a/0xff0 [ 57.051544] ? ioctl_preallocate+0x1a0/0x1a0 [ 57.055925] ? vfs_write+0x319/0x4d0 [ 57.059617] ? SyS_write+0x14d/0x210 [ 57.063306] ? security_file_ioctl+0x83/0xb0 [ 57.067687] SyS_ioctl+0x7f/0xb0 [ 57.071026] ? do_vfs_ioctl+0xff0/0xff0 [ 57.074977] do_syscall_64+0x1d5/0x640 [ 57.078840] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 57.084003] RIP: 0033:0x7f00d84b8cf9 [ 57.087700] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 57.095380] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 57.102624] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 57.109866] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 57.117107] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 57.124371] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 57.138707] FAULT_INJECTION: forcing a failure. [ 57.138707] name failslab, interval 1, probability 0, space 0, times 0 [ 57.150000] CPU: 0 PID: 8069 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 57.157855] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 57.167205] Call Trace: [ 57.169771] dump_stack+0x1b2/0x281 [ 57.173387] should_fail.cold+0x10a/0x149 [ 57.177510] should_failslab+0xd6/0x130 [ 57.181463] __kmalloc+0x2c1/0x400 [ 57.184975] ? __kfifo_alloc+0xdc/0x240 [ 57.188924] __kfifo_alloc+0xdc/0x240 [ 57.192715] gsm_dlci_alloc+0xd4/0x460 [ 57.196585] gsm_activate_mux+0x22e/0x2e0 [ 57.200726] gsmld_open+0x4ed/0x7b0 [ 57.204327] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 57.208535] tty_ldisc_open+0x6c/0xb0 [ 57.212398] tty_set_ldisc+0x287/0x5d0 [ 57.216259] tty_ioctl+0xa2a/0x1430 [ 57.219860] ? tty_fasync+0x2c0/0x2c0 [ 57.223636] ? proc_fail_nth_write+0x7b/0x180 [ 57.228104] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 57.233009] ? _raw_spin_unlock+0x29/0x40 [ 57.237162] ? do_fault_around+0x35e/0x620 [ 57.241381] ? fsnotify+0x974/0x11b0 [ 57.245073] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 57.249980] ? __handle_mm_fault+0x80f/0x4620 [ 57.254455] ? tty_fasync+0x2c0/0x2c0 [ 57.258237] do_vfs_ioctl+0x75a/0xff0 [ 57.262022] ? ioctl_preallocate+0x1a0/0x1a0 [ 57.266408] ? vfs_write+0x319/0x4d0 [ 57.270096] ? SyS_write+0x14d/0x210 [ 57.273782] ? security_file_ioctl+0x83/0xb0 [ 57.278181] SyS_ioctl+0x7f/0xb0 [ 57.281523] ? do_vfs_ioctl+0xff0/0xff0 [ 57.285470] do_syscall_64+0x1d5/0x640 [ 57.289336] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 57.294499] RIP: 0033:0x7f00d84b8cf9 [ 57.298183] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 57.305864] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 57.313107] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 57.320348] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 57.327590] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 57.335439] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 57.349806] FAULT_INJECTION: forcing a failure. [ 57.349806] name failslab, interval 1, probability 0, space 0, times 0 [ 57.361186] CPU: 0 PID: 8070 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 57.369044] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 57.378370] Call Trace: [ 57.380935] dump_stack+0x1b2/0x281 [ 57.384537] should_fail.cold+0x10a/0x149 [ 57.388662] should_failslab+0xd6/0x130 [ 57.392654] __kmalloc+0x2c1/0x400 [ 57.396186] ? __kfifo_alloc+0xdc/0x240 [ 57.400133] __kfifo_alloc+0xdc/0x240 [ 57.403909] gsm_dlci_alloc+0xd4/0x460 [ 57.407768] gsm_activate_mux+0x22e/0x2e0 [ 57.411901] gsmld_open+0x4ed/0x7b0 [ 57.415506] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 57.419715] tty_ldisc_open+0x6c/0xb0 [ 57.423613] tty_set_ldisc+0x287/0x5d0 [ 57.427497] tty_ioctl+0xa2a/0x1430 [ 57.431101] ? tty_fasync+0x2c0/0x2c0 [ 57.434882] ? proc_fail_nth_write+0x7b/0x180 [ 57.439351] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 57.444255] ? _raw_spin_unlock+0x29/0x40 [ 57.448810] ? do_fault_around+0x35e/0x620 [ 57.453026] ? fsnotify+0x974/0x11b0 [ 57.456713] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 57.461632] ? __handle_mm_fault+0x80f/0x4620 [ 57.466107] ? tty_fasync+0x2c0/0x2c0 [ 57.469886] do_vfs_ioctl+0x75a/0xff0 [ 57.473661] ? ioctl_preallocate+0x1a0/0x1a0 [ 57.478046] ? vfs_write+0x319/0x4d0 [ 57.481734] ? SyS_write+0x14d/0x210 [ 57.485422] ? security_file_ioctl+0x83/0xb0 [ 57.489803] SyS_ioctl+0x7f/0xb0 [ 57.493144] ? do_vfs_ioctl+0xff0/0xff0 [ 57.497094] do_syscall_64+0x1d5/0x640 [ 57.500965] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 57.506216] RIP: 0033:0x7f00d84b8cf9 [ 57.509901] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 57.517598] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 57.524846] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 57.532091] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 57.539350] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 57.546590] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 57.560221] FAULT_INJECTION: forcing a failure. [ 57.560221] name failslab, interval 1, probability 0, space 0, times 0 [ 57.571587] CPU: 0 PID: 8071 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 57.579450] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 57.588775] Call Trace: [ 57.591338] dump_stack+0x1b2/0x281 [ 57.594942] should_fail.cold+0x10a/0x149 [ 57.599067] should_failslab+0xd6/0x130 [ 57.603015] __kmalloc+0x2c1/0x400 [ 57.606528] ? __kfifo_alloc+0xdc/0x240 [ 57.610476] __kfifo_alloc+0xdc/0x240 [ 57.614251] gsm_dlci_alloc+0xd4/0x460 [ 57.618109] gsm_activate_mux+0x22e/0x2e0 [ 57.622229] gsmld_open+0x4ed/0x7b0 [ 57.625827] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 57.630037] tty_ldisc_open+0x6c/0xb0 [ 57.633811] tty_set_ldisc+0x287/0x5d0 [ 57.637673] tty_ioctl+0xa2a/0x1430 [ 57.641276] ? tty_fasync+0x2c0/0x2c0 [ 57.645054] ? proc_fail_nth_write+0x7b/0x180 [ 57.649521] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 57.654421] ? _raw_spin_unlock+0x29/0x40 [ 57.658542] ? do_fault_around+0x35e/0x620 [ 57.662751] ? fsnotify+0x974/0x11b0 [ 57.666436] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 57.671341] ? __handle_mm_fault+0x80f/0x4620 [ 57.675811] ? tty_fasync+0x2c0/0x2c0 [ 57.679588] do_vfs_ioctl+0x75a/0xff0 [ 57.683380] ? ioctl_preallocate+0x1a0/0x1a0 [ 57.687766] ? vfs_write+0x319/0x4d0 [ 57.691630] ? SyS_write+0x14d/0x210 [ 57.695325] ? security_file_ioctl+0x83/0xb0 [ 57.699708] SyS_ioctl+0x7f/0xb0 [ 57.703046] ? do_vfs_ioctl+0xff0/0xff0 [ 57.706993] do_syscall_64+0x1d5/0x640 [ 57.710857] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 57.716019] RIP: 0033:0x7f00d84b8cf9 [ 57.719703] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 57.727383] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 57.734628] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 57.741872] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 57.749133] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 57.756407] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 57.770277] FAULT_INJECTION: forcing a failure. [ 57.770277] name failslab, interval 1, probability 0, space 0, times 0 [ 57.781735] CPU: 0 PID: 8072 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 57.789591] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 57.798915] Call Trace: [ 57.801505] dump_stack+0x1b2/0x281 [ 57.806846] should_fail.cold+0x10a/0x149 [ 57.811014] should_failslab+0xd6/0x130 [ 57.814995] __kmalloc+0x2c1/0x400 [ 57.818526] ? __kfifo_alloc+0xdc/0x240 [ 57.822573] __kfifo_alloc+0xdc/0x240 [ 57.826354] gsm_dlci_alloc+0xd4/0x460 [ 57.830308] gsm_activate_mux+0x22e/0x2e0 [ 57.834444] gsmld_open+0x4ed/0x7b0 [ 57.838048] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 57.842261] tty_ldisc_open+0x6c/0xb0 [ 57.846065] tty_set_ldisc+0x287/0x5d0 [ 57.849933] tty_ioctl+0xa2a/0x1430 [ 57.853553] ? tty_fasync+0x2c0/0x2c0 [ 57.857428] ? proc_fail_nth_write+0x7b/0x180 [ 57.861904] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 57.866818] ? _raw_spin_unlock+0x29/0x40 [ 57.871044] ? do_fault_around+0x35e/0x620 [ 57.875375] ? fsnotify+0x974/0x11b0 [ 57.879071] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 57.884343] ? __handle_mm_fault+0x80f/0x4620 [ 57.888818] ? tty_fasync+0x2c0/0x2c0 [ 57.892718] do_vfs_ioctl+0x75a/0xff0 [ 57.896583] ? ioctl_preallocate+0x1a0/0x1a0 [ 57.901004] ? vfs_write+0x319/0x4d0 [ 57.904728] ? SyS_write+0x14d/0x210 [ 57.908505] ? security_file_ioctl+0x83/0xb0 [ 57.912908] SyS_ioctl+0x7f/0xb0 [ 57.916255] ? do_vfs_ioctl+0xff0/0xff0 [ 57.920208] do_syscall_64+0x1d5/0x640 [ 57.924074] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 57.929438] RIP: 0033:0x7f00d84b8cf9 [ 57.933125] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 57.940819] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 57.948328] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 57.955746] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 57.963009] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 57.970260] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 57.984175] FAULT_INJECTION: forcing a failure. [ 57.984175] name failslab, interval 1, probability 0, space 0, times 0 [ 57.995449] CPU: 0 PID: 8073 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 58.003336] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 58.012928] Call Trace: [ 58.015632] dump_stack+0x1b2/0x281 [ 58.019244] should_fail.cold+0x10a/0x149 [ 58.023390] should_failslab+0xd6/0x130 [ 58.027346] __kmalloc+0x2c1/0x400 [ 58.030861] ? __kfifo_alloc+0xdc/0x240 [ 58.034820] __kfifo_alloc+0xdc/0x240 [ 58.038615] gsm_dlci_alloc+0xd4/0x460 [ 58.042476] gsm_activate_mux+0x22e/0x2e0 [ 58.046686] gsmld_open+0x4ed/0x7b0 [ 58.050308] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 58.054527] tty_ldisc_open+0x6c/0xb0 [ 58.058342] tty_set_ldisc+0x287/0x5d0 [ 58.062205] tty_ioctl+0xa2a/0x1430 [ 58.065811] ? tty_fasync+0x2c0/0x2c0 [ 58.069590] ? proc_fail_nth_write+0x7b/0x180 [ 58.074147] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 58.079783] ? _raw_spin_unlock+0x29/0x40 [ 58.084573] ? do_fault_around+0x35e/0x620 [ 58.088787] ? fsnotify+0x974/0x11b0 [ 58.092505] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 58.097439] ? __handle_mm_fault+0x80f/0x4620 [ 58.101917] ? tty_fasync+0x2c0/0x2c0 [ 58.105832] do_vfs_ioctl+0x75a/0xff0 [ 58.109713] ? ioctl_preallocate+0x1a0/0x1a0 [ 58.114099] ? vfs_write+0x319/0x4d0 [ 58.117791] ? SyS_write+0x14d/0x210 [ 58.121520] ? security_file_ioctl+0x83/0xb0 [ 58.126561] SyS_ioctl+0x7f/0xb0 [ 58.129926] ? do_vfs_ioctl+0xff0/0xff0 [ 58.133891] do_syscall_64+0x1d5/0x640 [ 58.137835] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 58.143011] RIP: 0033:0x7f00d84b8cf9 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 58.147080] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 58.154784] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 58.162039] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 58.169314] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 58.176669] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 58.184063] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 58.198262] FAULT_INJECTION: forcing a failure. [ 58.198262] name failslab, interval 1, probability 0, space 0, times 0 [ 58.209695] CPU: 0 PID: 8074 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 58.217554] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 58.227666] Call Trace: [ 58.230240] dump_stack+0x1b2/0x281 [ 58.233849] should_fail.cold+0x10a/0x149 [ 58.237993] should_failslab+0xd6/0x130 [ 58.241946] __kmalloc+0x2c1/0x400 [ 58.245486] ? __kfifo_alloc+0xdc/0x240 [ 58.249443] __kfifo_alloc+0xdc/0x240 [ 58.253258] gsm_dlci_alloc+0xd4/0x460 [ 58.257305] gsm_activate_mux+0x22e/0x2e0 [ 58.261610] gsmld_open+0x4ed/0x7b0 [ 58.265259] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 58.269661] tty_ldisc_open+0x6c/0xb0 [ 58.273440] tty_set_ldisc+0x287/0x5d0 [ 58.277306] tty_ioctl+0xa2a/0x1430 [ 58.280994] ? tty_fasync+0x2c0/0x2c0 [ 58.284789] ? proc_fail_nth_write+0x7b/0x180 [ 58.289298] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 58.294205] ? _raw_spin_unlock+0x29/0x40 [ 58.298342] ? do_fault_around+0x35e/0x620 [ 58.302552] ? fsnotify+0x974/0x11b0 [ 58.306258] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 58.311283] ? __handle_mm_fault+0x80f/0x4620 [ 58.315782] ? tty_fasync+0x2c0/0x2c0 [ 58.319695] do_vfs_ioctl+0x75a/0xff0 [ 58.323471] ? ioctl_preallocate+0x1a0/0x1a0 [ 58.327859] ? vfs_write+0x319/0x4d0 [ 58.331548] ? SyS_write+0x14d/0x210 [ 58.335239] ? security_file_ioctl+0x83/0xb0 [ 58.339640] SyS_ioctl+0x7f/0xb0 [ 58.342981] ? do_vfs_ioctl+0xff0/0xff0 [ 58.347190] do_syscall_64+0x1d5/0x640 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 58.351055] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 58.356310] RIP: 0033:0x7f00d84b8cf9 [ 58.359999] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 58.367683] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 58.375015] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 58.382363] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 58.389606] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 58.396853] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 58.410582] FAULT_INJECTION: forcing a failure. [ 58.410582] name failslab, interval 1, probability 0, space 0, times 0 [ 58.421951] CPU: 0 PID: 8075 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 58.429816] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 58.439145] Call Trace: [ 58.441712] dump_stack+0x1b2/0x281 [ 58.445328] should_fail.cold+0x10a/0x149 [ 58.449454] should_failslab+0xd6/0x130 [ 58.453492] __kmalloc+0x2c1/0x400 [ 58.457008] ? __kfifo_alloc+0xdc/0x240 [ 58.460958] __kfifo_alloc+0xdc/0x240 [ 58.464744] gsm_dlci_alloc+0xd4/0x460 [ 58.468623] gsm_activate_mux+0x22e/0x2e0 [ 58.472772] gsmld_open+0x4ed/0x7b0 [ 58.476403] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 58.480625] tty_ldisc_open+0x6c/0xb0 [ 58.484407] tty_set_ldisc+0x287/0x5d0 [ 58.488273] tty_ioctl+0xa2a/0x1430 [ 58.491875] ? tty_fasync+0x2c0/0x2c0 [ 58.495654] ? proc_fail_nth_write+0x7b/0x180 [ 58.500135] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 58.505066] ? _raw_spin_unlock+0x29/0x40 [ 58.509224] ? do_fault_around+0x35e/0x620 [ 58.513544] ? fsnotify+0x974/0x11b0 [ 58.517254] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 58.522161] ? __handle_mm_fault+0x80f/0x4620 [ 58.526638] ? tty_fasync+0x2c0/0x2c0 [ 58.530544] do_vfs_ioctl+0x75a/0xff0 [ 58.534412] ? ioctl_preallocate+0x1a0/0x1a0 [ 58.538799] ? vfs_write+0x319/0x4d0 [ 58.542492] ? SyS_write+0x14d/0x210 [ 58.546290] ? security_file_ioctl+0x83/0xb0 [ 58.550706] SyS_ioctl+0x7f/0xb0 [ 58.554055] ? do_vfs_ioctl+0xff0/0xff0 [ 58.558017] do_syscall_64+0x1d5/0x640 [ 58.561882] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 58.567048] RIP: 0033:0x7f00d84b8cf9 [ 58.570740] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 58.578513] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 58.585760] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 58.593009] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 58.600276] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 58.607528] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 58.621299] FAULT_INJECTION: forcing a failure. [ 58.621299] name failslab, interval 1, probability 0, space 0, times 0 [ 58.632769] CPU: 0 PID: 8076 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 58.640717] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 58.650047] Call Trace: [ 58.652613] dump_stack+0x1b2/0x281 [ 58.656253] should_fail.cold+0x10a/0x149 [ 58.660492] should_failslab+0xd6/0x130 [ 58.664450] __kmalloc+0x2c1/0x400 [ 58.668145] ? __kfifo_alloc+0xdc/0x240 [ 58.672116] __kfifo_alloc+0xdc/0x240 [ 58.675897] gsm_dlci_alloc+0xd4/0x460 [ 58.679790] gsm_activate_mux+0x22e/0x2e0 [ 58.683917] gsmld_open+0x4ed/0x7b0 [ 58.687558] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 58.691856] tty_ldisc_open+0x6c/0xb0 [ 58.695645] tty_set_ldisc+0x287/0x5d0 [ 58.699538] tty_ioctl+0xa2a/0x1430 [ 58.703143] ? tty_fasync+0x2c0/0x2c0 [ 58.706942] ? proc_fail_nth_write+0x7b/0x180 [ 58.711418] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 58.716324] ? _raw_spin_unlock+0x29/0x40 [ 58.720466] ? do_fault_around+0x35e/0x620 [ 58.724695] ? fsnotify+0x974/0x11b0 [ 58.728404] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 58.733464] ? __handle_mm_fault+0x80f/0x4620 [ 58.737945] ? tty_fasync+0x2c0/0x2c0 [ 58.741726] do_vfs_ioctl+0x75a/0xff0 [ 58.745537] ? ioctl_preallocate+0x1a0/0x1a0 [ 58.749930] ? vfs_write+0x319/0x4d0 [ 58.753648] ? SyS_write+0x14d/0x210 [ 58.757368] ? security_file_ioctl+0x83/0xb0 [ 58.761775] SyS_ioctl+0x7f/0xb0 [ 58.765149] ? do_vfs_ioctl+0xff0/0xff0 [ 58.769109] do_syscall_64+0x1d5/0x640 [ 58.772986] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 58.778153] RIP: 0033:0x7f00d84b8cf9 [ 58.781839] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 58.789533] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 58.796795] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 58.804058] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 58.811306] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 58.818551] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 58.833053] FAULT_INJECTION: forcing a failure. [ 58.833053] name failslab, interval 1, probability 0, space 0, times 0 [ 58.844451] CPU: 0 PID: 8077 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 58.852326] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 58.862273] Call Trace: [ 58.864847] dump_stack+0x1b2/0x281 [ 58.868473] should_fail.cold+0x10a/0x149 [ 58.872611] should_failslab+0xd6/0x130 [ 58.876567] __kmalloc+0x2c1/0x400 [ 58.880131] ? __kfifo_alloc+0xdc/0x240 [ 58.884258] __kfifo_alloc+0xdc/0x240 [ 58.888039] gsm_dlci_alloc+0xd4/0x460 [ 58.891921] gsm_activate_mux+0x22e/0x2e0 [ 58.896065] gsmld_open+0x4ed/0x7b0 [ 58.899695] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 58.903923] tty_ldisc_open+0x6c/0xb0 [ 58.907727] tty_set_ldisc+0x287/0x5d0 [ 58.911600] tty_ioctl+0xa2a/0x1430 [ 58.915389] ? tty_fasync+0x2c0/0x2c0 [ 58.919168] ? proc_fail_nth_write+0x7b/0x180 [ 58.923642] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 58.928559] ? _raw_spin_unlock+0x29/0x40 [ 58.932684] ? do_fault_around+0x35e/0x620 [ 58.937011] ? fsnotify+0x974/0x11b0 [ 58.940702] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 58.947035] ? __handle_mm_fault+0x80f/0x4620 [ 58.951511] ? tty_fasync+0x2c0/0x2c0 [ 58.955291] do_vfs_ioctl+0x75a/0xff0 [ 58.959184] ? ioctl_preallocate+0x1a0/0x1a0 [ 58.963570] ? vfs_write+0x319/0x4d0 [ 58.967262] ? SyS_write+0x14d/0x210 [ 58.970952] ? security_file_ioctl+0x83/0xb0 [ 58.975509] SyS_ioctl+0x7f/0xb0 [ 58.978980] ? do_vfs_ioctl+0xff0/0xff0 [ 58.982938] do_syscall_64+0x1d5/0x640 [ 58.986807] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 58.991974] RIP: 0033:0x7f00d84b8cf9 [ 58.995662] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 59.003349] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 59.010686] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 59.018458] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 59.025711] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 59.033052] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 59.048256] FAULT_INJECTION: forcing a failure. [ 59.048256] name failslab, interval 1, probability 0, space 0, times 0 [ 59.059670] CPU: 0 PID: 8078 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 59.067537] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 59.076867] Call Trace: [ 59.079532] dump_stack+0x1b2/0x281 [ 59.083156] should_fail.cold+0x10a/0x149 [ 59.087286] should_failslab+0xd6/0x130 [ 59.091278] __kmalloc+0x2c1/0x400 [ 59.094801] ? __kfifo_alloc+0xdc/0x240 [ 59.098754] __kfifo_alloc+0xdc/0x240 [ 59.102536] gsm_dlci_alloc+0xd4/0x460 [ 59.106404] gsm_activate_mux+0x22e/0x2e0 [ 59.110540] gsmld_open+0x4ed/0x7b0 [ 59.114147] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 59.118371] tty_ldisc_open+0x6c/0xb0 [ 59.122160] tty_set_ldisc+0x287/0x5d0 [ 59.126054] tty_ioctl+0xa2a/0x1430 [ 59.129667] ? tty_fasync+0x2c0/0x2c0 [ 59.133447] ? proc_fail_nth_write+0x7b/0x180 [ 59.137945] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 59.142855] ? _raw_spin_unlock+0x29/0x40 [ 59.146979] ? do_fault_around+0x35e/0x620 [ 59.151199] ? fsnotify+0x974/0x11b0 [ 59.154917] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 59.159820] ? __handle_mm_fault+0x80f/0x4620 [ 59.164322] ? tty_fasync+0x2c0/0x2c0 [ 59.168103] do_vfs_ioctl+0x75a/0xff0 [ 59.171878] ? ioctl_preallocate+0x1a0/0x1a0 [ 59.176268] ? vfs_write+0x319/0x4d0 [ 59.179959] ? SyS_write+0x14d/0x210 [ 59.183927] ? security_file_ioctl+0x83/0xb0 [ 59.188313] SyS_ioctl+0x7f/0xb0 [ 59.191672] ? do_vfs_ioctl+0xff0/0xff0 [ 59.196630] do_syscall_64+0x1d5/0x640 [ 59.200500] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 59.205761] RIP: 0033:0x7f00d84b8cf9 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 59.209571] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 59.217265] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 59.225021] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 59.232360] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 59.239623] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 59.246890] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 59.261110] FAULT_INJECTION: forcing a failure. [ 59.261110] name failslab, interval 1, probability 0, space 0, times 0 [ 59.272415] CPU: 0 PID: 8079 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 59.280282] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 59.289786] Call Trace: [ 59.292354] dump_stack+0x1b2/0x281 [ 59.295981] should_fail.cold+0x10a/0x149 [ 59.300146] should_failslab+0xd6/0x130 [ 59.304102] __kmalloc+0x2c1/0x400 [ 59.307625] ? __kfifo_alloc+0xdc/0x240 [ 59.311584] __kfifo_alloc+0xdc/0x240 [ 59.315398] gsm_dlci_alloc+0xd4/0x460 [ 59.319888] gsm_activate_mux+0x22e/0x2e0 [ 59.324128] gsmld_open+0x4ed/0x7b0 [ 59.327730] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 59.331947] tty_ldisc_open+0x6c/0xb0 [ 59.335734] tty_set_ldisc+0x287/0x5d0 [ 59.339607] tty_ioctl+0xa2a/0x1430 [ 59.343233] ? tty_fasync+0x2c0/0x2c0 [ 59.347011] ? proc_fail_nth_write+0x7b/0x180 [ 59.351484] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 59.356410] ? _raw_spin_unlock+0x29/0x40 [ 59.360544] ? do_fault_around+0x35e/0x620 [ 59.364759] ? fsnotify+0x974/0x11b0 [ 59.368469] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 59.373420] ? __handle_mm_fault+0x80f/0x4620 [ 59.377924] ? tty_fasync+0x2c0/0x2c0 [ 59.381702] do_vfs_ioctl+0x75a/0xff0 [ 59.385481] ? ioctl_preallocate+0x1a0/0x1a0 [ 59.389870] ? vfs_write+0x319/0x4d0 [ 59.394119] ? SyS_write+0x14d/0x210 [ 59.397811] ? security_file_ioctl+0x83/0xb0 [ 59.402196] SyS_ioctl+0x7f/0xb0 [ 59.405547] ? do_vfs_ioctl+0xff0/0xff0 [ 59.409507] do_syscall_64+0x1d5/0x640 [ 59.413375] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 59.418558] RIP: 0033:0x7f00d84b8cf9 [ 59.422245] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 59.430539] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 59.437968] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 59.445304] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 59.452662] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 59.460520] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 59.474160] FAULT_INJECTION: forcing a failure. [ 59.474160] name failslab, interval 1, probability 0, space 0, times 0 [ 59.485811] CPU: 0 PID: 8080 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 59.493807] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 59.503417] Call Trace: [ 59.505994] dump_stack+0x1b2/0x281 [ 59.509626] should_fail.cold+0x10a/0x149 [ 59.513843] should_failslab+0xd6/0x130 [ 59.517797] __kmalloc+0x2c1/0x400 [ 59.521343] ? __kfifo_alloc+0xdc/0x240 [ 59.525369] __kfifo_alloc+0xdc/0x240 [ 59.529249] gsm_dlci_alloc+0xd4/0x460 [ 59.533137] gsm_activate_mux+0x22e/0x2e0 [ 59.537579] gsmld_open+0x4ed/0x7b0 [ 59.541197] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 59.545437] tty_ldisc_open+0x6c/0xb0 [ 59.549311] tty_set_ldisc+0x287/0x5d0 [ 59.553187] tty_ioctl+0xa2a/0x1430 [ 59.556812] ? tty_fasync+0x2c0/0x2c0 [ 59.560728] ? proc_fail_nth_write+0x7b/0x180 [ 59.565212] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 59.570379] ? _raw_spin_unlock+0x29/0x40 [ 59.574510] ? do_fault_around+0x35e/0x620 [ 59.578739] ? fsnotify+0x974/0x11b0 [ 59.582543] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 59.587448] ? __handle_mm_fault+0x80f/0x4620 [ 59.592097] ? tty_fasync+0x2c0/0x2c0 [ 59.595991] do_vfs_ioctl+0x75a/0xff0 [ 59.599856] ? ioctl_preallocate+0x1a0/0x1a0 [ 59.604368] ? vfs_write+0x319/0x4d0 [ 59.608062] ? SyS_write+0x14d/0x210 [ 59.611981] ? security_file_ioctl+0x83/0xb0 [ 59.616463] SyS_ioctl+0x7f/0xb0 [ 59.619912] ? do_vfs_ioctl+0xff0/0xff0 [ 59.623866] do_syscall_64+0x1d5/0x640 [ 59.627732] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 59.632897] RIP: 0033:0x7f00d84b8cf9 [ 59.636601] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 59.644287] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 59.651533] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 59.658777] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 59.666020] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 59.673281] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 59.686386] FAULT_INJECTION: forcing a failure. [ 59.686386] name failslab, interval 1, probability 0, space 0, times 0 [ 59.697817] CPU: 0 PID: 8081 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 59.705678] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 59.715183] Call Trace: [ 59.717752] dump_stack+0x1b2/0x281 [ 59.721365] should_fail.cold+0x10a/0x149 [ 59.725492] should_failslab+0xd6/0x130 [ 59.729444] __kmalloc+0x2c1/0x400 [ 59.732958] ? __kfifo_alloc+0xdc/0x240 [ 59.736924] __kfifo_alloc+0xdc/0x240 [ 59.740732] gsm_dlci_alloc+0xd4/0x460 [ 59.744599] gsm_activate_mux+0x22e/0x2e0 [ 59.748734] gsmld_open+0x4ed/0x7b0 [ 59.752447] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 59.756690] tty_ldisc_open+0x6c/0xb0 [ 59.760466] tty_set_ldisc+0x287/0x5d0 [ 59.764331] tty_ioctl+0xa2a/0x1430 [ 59.767932] ? tty_fasync+0x2c0/0x2c0 [ 59.771725] ? proc_fail_nth_write+0x7b/0x180 [ 59.776214] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 59.781130] ? _raw_spin_unlock+0x29/0x40 [ 59.785269] ? do_fault_around+0x35e/0x620 [ 59.789569] ? fsnotify+0x974/0x11b0 [ 59.793384] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 59.798301] ? __handle_mm_fault+0x80f/0x4620 [ 59.802890] ? tty_fasync+0x2c0/0x2c0 [ 59.806674] do_vfs_ioctl+0x75a/0xff0 [ 59.810542] ? ioctl_preallocate+0x1a0/0x1a0 [ 59.814932] ? vfs_write+0x319/0x4d0 [ 59.818626] ? SyS_write+0x14d/0x210 [ 59.822348] ? security_file_ioctl+0x83/0xb0 [ 59.826735] SyS_ioctl+0x7f/0xb0 [ 59.830077] ? do_vfs_ioctl+0xff0/0xff0 [ 59.834027] do_syscall_64+0x1d5/0x640 [ 59.837895] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 59.843062] RIP: 0033:0x7f00d84b8cf9 [ 59.846750] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 59.854449] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 59.861695] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 59.868959] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 59.876230] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 59.883562] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 59.897762] FAULT_INJECTION: forcing a failure. [ 59.897762] name failslab, interval 1, probability 0, space 0, times 0 [ 59.909059] CPU: 0 PID: 8082 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 59.916918] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 59.926250] Call Trace: [ 59.928816] dump_stack+0x1b2/0x281 [ 59.932424] should_fail.cold+0x10a/0x149 [ 59.936549] should_failslab+0xd6/0x130 [ 59.940501] __kmalloc+0x2c1/0x400 [ 59.944017] ? __kfifo_alloc+0xdc/0x240 [ 59.947968] __kfifo_alloc+0xdc/0x240 [ 59.951761] gsm_dlci_alloc+0xd4/0x460 [ 59.955625] gsm_activate_mux+0x22e/0x2e0 [ 59.959749] gsmld_open+0x4ed/0x7b0 [ 59.963367] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 59.967579] tty_ldisc_open+0x6c/0xb0 [ 59.971368] tty_set_ldisc+0x287/0x5d0 [ 59.975248] tty_ioctl+0xa2a/0x1430 [ 59.978877] ? tty_fasync+0x2c0/0x2c0 [ 59.982666] ? proc_fail_nth_write+0x7b/0x180 [ 59.987139] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 59.992055] ? _raw_spin_unlock+0x29/0x40 [ 59.996179] ? do_fault_around+0x35e/0x620 [ 60.000391] ? fsnotify+0x974/0x11b0 [ 60.004090] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 60.009027] ? __handle_mm_fault+0x80f/0x4620 [ 60.013588] ? tty_fasync+0x2c0/0x2c0 [ 60.017367] do_vfs_ioctl+0x75a/0xff0 [ 60.021147] ? ioctl_preallocate+0x1a0/0x1a0 [ 60.025535] ? vfs_write+0x319/0x4d0 [ 60.029256] ? SyS_write+0x14d/0x210 [ 60.032965] ? security_file_ioctl+0x83/0xb0 [ 60.037349] SyS_ioctl+0x7f/0xb0 [ 60.040691] ? do_vfs_ioctl+0xff0/0xff0 [ 60.044640] do_syscall_64+0x1d5/0x640 [ 60.048507] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 60.053686] RIP: 0033:0x7f00d84b8cf9 [ 60.057416] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 60.065111] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 60.072359] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 60.079603] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 60.086850] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 60.094095] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 60.107994] FAULT_INJECTION: forcing a failure. [ 60.107994] name failslab, interval 1, probability 0, space 0, times 0 [ 60.119412] CPU: 0 PID: 8083 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 60.127274] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 60.136952] Call Trace: [ 60.139526] dump_stack+0x1b2/0x281 [ 60.143309] should_fail.cold+0x10a/0x149 [ 60.147434] should_failslab+0xd6/0x130 [ 60.151583] __kmalloc+0x2c1/0x400 [ 60.155115] ? __kfifo_alloc+0xdc/0x240 [ 60.159099] __kfifo_alloc+0xdc/0x240 [ 60.163066] gsm_dlci_alloc+0xd4/0x460 [ 60.171635] gsm_activate_mux+0x22e/0x2e0 [ 60.175772] gsmld_open+0x4ed/0x7b0 [ 60.179390] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 60.183701] tty_ldisc_open+0x6c/0xb0 [ 60.187488] tty_set_ldisc+0x287/0x5d0 [ 60.191374] tty_ioctl+0xa2a/0x1430 [ 60.194980] ? tty_fasync+0x2c0/0x2c0 [ 60.198857] ? proc_fail_nth_write+0x7b/0x180 [ 60.203589] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 60.208548] ? _raw_spin_unlock+0x29/0x40 [ 60.212681] ? do_fault_around+0x35e/0x620 [ 60.216895] ? fsnotify+0x974/0x11b0 [ 60.220599] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 60.225508] ? __handle_mm_fault+0x80f/0x4620 [ 60.230006] ? tty_fasync+0x2c0/0x2c0 [ 60.233789] do_vfs_ioctl+0x75a/0xff0 [ 60.237577] ? ioctl_preallocate+0x1a0/0x1a0 [ 60.241976] ? vfs_write+0x319/0x4d0 [ 60.245665] ? SyS_write+0x14d/0x210 [ 60.249373] ? security_file_ioctl+0x83/0xb0 [ 60.253757] SyS_ioctl+0x7f/0xb0 [ 60.257099] ? do_vfs_ioctl+0xff0/0xff0 [ 60.261051] do_syscall_64+0x1d5/0x640 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 60.264937] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 60.270099] RIP: 0033:0x7f00d84b8cf9 [ 60.273783] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 60.281463] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 60.288713] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 60.295958] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 60.303199] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 60.310452] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 60.324408] FAULT_INJECTION: forcing a failure. [ 60.324408] name failslab, interval 1, probability 0, space 0, times 0 [ 60.335682] CPU: 0 PID: 8084 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 60.343547] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 60.352896] Call Trace: [ 60.355463] dump_stack+0x1b2/0x281 [ 60.359101] should_fail.cold+0x10a/0x149 [ 60.363668] should_failslab+0xd6/0x130 [ 60.367618] __kmalloc+0x2c1/0x400 [ 60.371141] ? __kfifo_alloc+0xdc/0x240 [ 60.375090] __kfifo_alloc+0xdc/0x240 [ 60.378878] gsm_dlci_alloc+0xd4/0x460 [ 60.382759] gsm_activate_mux+0x22e/0x2e0 [ 60.386879] gsmld_open+0x4ed/0x7b0 [ 60.390480] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 60.394687] tty_ldisc_open+0x6c/0xb0 [ 60.398550] tty_set_ldisc+0x287/0x5d0 [ 60.402413] tty_ioctl+0xa2a/0x1430 [ 60.406022] ? tty_fasync+0x2c0/0x2c0 [ 60.409811] ? proc_fail_nth_write+0x7b/0x180 [ 60.414287] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 60.419279] ? _raw_spin_unlock+0x29/0x40 [ 60.423400] ? do_fault_around+0x35e/0x620 [ 60.427618] ? fsnotify+0x974/0x11b0 [ 60.431394] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 60.436302] ? __handle_mm_fault+0x80f/0x4620 [ 60.440778] ? tty_fasync+0x2c0/0x2c0 [ 60.444553] do_vfs_ioctl+0x75a/0xff0 [ 60.448341] ? ioctl_preallocate+0x1a0/0x1a0 [ 60.452749] ? vfs_write+0x319/0x4d0 [ 60.456471] ? SyS_write+0x14d/0x210 [ 60.460345] ? security_file_ioctl+0x83/0xb0 [ 60.464879] SyS_ioctl+0x7f/0xb0 [ 60.468225] ? do_vfs_ioctl+0xff0/0xff0 [ 60.472188] do_syscall_64+0x1d5/0x640 [ 60.476056] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 60.481232] RIP: 0033:0x7f00d84b8cf9 [ 60.484923] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 60.492612] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 60.499859] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 60.507423] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 60.514869] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 60.522118] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 60.535998] FAULT_INJECTION: forcing a failure. [ 60.535998] name failslab, interval 1, probability 0, space 0, times 0 [ 60.547294] CPU: 0 PID: 8085 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 60.555290] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 60.564760] Call Trace: [ 60.567336] dump_stack+0x1b2/0x281 [ 60.570944] should_fail.cold+0x10a/0x149 [ 60.575072] should_failslab+0xd6/0x130 [ 60.579035] __kmalloc+0x2c1/0x400 [ 60.583249] ? __kfifo_alloc+0xdc/0x240 [ 60.587202] __kfifo_alloc+0xdc/0x240 [ 60.590981] gsm_dlci_alloc+0xd4/0x460 [ 60.594844] gsm_activate_mux+0x22e/0x2e0 [ 60.598973] gsmld_open+0x4ed/0x7b0 [ 60.602575] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 60.606788] tty_ldisc_open+0x6c/0xb0 [ 60.610563] tty_set_ldisc+0x287/0x5d0 [ 60.614427] tty_ioctl+0xa2a/0x1430 [ 60.618028] ? tty_fasync+0x2c0/0x2c0 [ 60.621815] ? proc_fail_nth_write+0x7b/0x180 [ 60.626289] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 60.631202] ? _raw_spin_unlock+0x29/0x40 [ 60.635338] ? do_fault_around+0x35e/0x620 [ 60.639559] ? fsnotify+0x974/0x11b0 [ 60.643254] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 60.648166] ? __handle_mm_fault+0x80f/0x4620 [ 60.652643] ? tty_fasync+0x2c0/0x2c0 [ 60.656420] do_vfs_ioctl+0x75a/0xff0 [ 60.660208] ? ioctl_preallocate+0x1a0/0x1a0 [ 60.664596] ? vfs_write+0x319/0x4d0 [ 60.668293] ? SyS_write+0x14d/0x210 [ 60.671983] ? security_file_ioctl+0x83/0xb0 [ 60.676373] SyS_ioctl+0x7f/0xb0 [ 60.679713] ? do_vfs_ioctl+0xff0/0xff0 [ 60.683750] do_syscall_64+0x1d5/0x640 [ 60.687712] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 60.692894] RIP: 0033:0x7f00d84b8cf9 [ 60.696764] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 60.706026] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 60.713290] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 60.720649] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 60.727893] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 60.735251] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 60.749327] FAULT_INJECTION: forcing a failure. [ 60.749327] name failslab, interval 1, probability 0, space 0, times 0 [ 60.760942] CPU: 0 PID: 8086 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 60.768817] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 60.778164] Call Trace: [ 60.780764] dump_stack+0x1b2/0x281 [ 60.784372] should_fail.cold+0x10a/0x149 [ 60.788512] should_failslab+0xd6/0x130 [ 60.792472] __kmalloc+0x2c1/0x400 [ 60.795993] ? __kfifo_alloc+0xdc/0x240 [ 60.799951] __kfifo_alloc+0xdc/0x240 [ 60.803991] gsm_dlci_alloc+0xd4/0x460 [ 60.807875] gsm_activate_mux+0x22e/0x2e0 [ 60.812096] gsmld_open+0x4ed/0x7b0 [ 60.815705] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 60.819916] tty_ldisc_open+0x6c/0xb0 [ 60.823743] tty_set_ldisc+0x287/0x5d0 [ 60.827770] tty_ioctl+0xa2a/0x1430 [ 60.831387] ? tty_fasync+0x2c0/0x2c0 [ 60.835172] ? proc_fail_nth_write+0x7b/0x180 [ 60.839645] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 60.844560] ? _raw_spin_unlock+0x29/0x40 [ 60.848691] ? do_fault_around+0x35e/0x620 [ 60.852905] ? fsnotify+0x974/0x11b0 [ 60.856610] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 60.861521] ? __handle_mm_fault+0x80f/0x4620 [ 60.866008] ? tty_fasync+0x2c0/0x2c0 [ 60.869796] do_vfs_ioctl+0x75a/0xff0 [ 60.873573] ? ioctl_preallocate+0x1a0/0x1a0 [ 60.877957] ? vfs_write+0x319/0x4d0 [ 60.881655] ? SyS_write+0x14d/0x210 [ 60.885358] ? security_file_ioctl+0x83/0xb0 [ 60.889899] SyS_ioctl+0x7f/0xb0 [ 60.893271] ? do_vfs_ioctl+0xff0/0xff0 [ 60.897230] do_syscall_64+0x1d5/0x640 [ 60.901103] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 60.906364] RIP: 0033:0x7f00d84b8cf9 [ 60.910151] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 60.917844] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 60.925100] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 60.932346] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 60.939597] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 60.946852] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 60.960719] FAULT_INJECTION: forcing a failure. [ 60.960719] name failslab, interval 1, probability 0, space 0, times 0 [ 60.972139] CPU: 0 PID: 8087 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 60.980435] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 60.989765] Call Trace: [ 60.992337] dump_stack+0x1b2/0x281 [ 60.995942] should_fail.cold+0x10a/0x149 [ 61.000078] ? gsm_activate_mux+0x224/0x2e0 [ 61.004377] should_failslab+0xd6/0x130 [ 61.008341] kmem_cache_alloc_trace+0x47/0x3d0 [ 61.012909] gsm_dlci_alloc+0x46/0x460 [ 61.016799] gsm_activate_mux+0x22e/0x2e0 [ 61.020927] gsmld_open+0x4ed/0x7b0 [ 61.024528] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 61.028739] tty_ldisc_open+0x6c/0xb0 [ 61.032517] tty_set_ldisc+0x287/0x5d0 [ 61.036381] tty_ioctl+0xa2a/0x1430 [ 61.039992] ? tty_fasync+0x2c0/0x2c0 [ 61.043876] ? proc_fail_nth_write+0x7b/0x180 [ 61.048345] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 61.053269] ? _raw_spin_unlock+0x29/0x40 [ 61.057391] ? do_fault_around+0x35e/0x620 [ 61.061601] ? fsnotify+0x974/0x11b0 [ 61.065296] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 61.070220] ? __handle_mm_fault+0x80f/0x4620 [ 61.074713] ? tty_fasync+0x2c0/0x2c0 [ 61.078501] do_vfs_ioctl+0x75a/0xff0 [ 61.082285] ? ioctl_preallocate+0x1a0/0x1a0 [ 61.086673] ? vfs_write+0x319/0x4d0 [ 61.090368] ? SyS_write+0x14d/0x210 [ 61.094157] ? security_file_ioctl+0x83/0xb0 [ 61.098635] SyS_ioctl+0x7f/0xb0 [ 61.102004] ? do_vfs_ioctl+0xff0/0xff0 [ 61.105959] do_syscall_64+0x1d5/0x640 [ 61.109888] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 61.115059] RIP: 0033:0x7f00d84b8cf9 [ 61.118748] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 61.126433] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 61.133677] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 61.140920] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 61.148167] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 61.155410] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 61.169246] FAULT_INJECTION: forcing a failure. [ 61.169246] name failslab, interval 1, probability 0, space 0, times 0 [ 61.180497] CPU: 0 PID: 8088 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 61.188355] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 61.197680] Call Trace: [ 61.200271] dump_stack+0x1b2/0x281 [ 61.203875] should_fail.cold+0x10a/0x149 [ 61.208016] ? gsm_activate_mux+0x224/0x2e0 [ 61.212319] should_failslab+0xd6/0x130 [ 61.216268] kmem_cache_alloc_trace+0x47/0x3d0 [ 61.220831] gsm_dlci_alloc+0x46/0x460 [ 61.224695] gsm_activate_mux+0x22e/0x2e0 [ 61.228816] gsmld_open+0x4ed/0x7b0 [ 61.232421] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 61.236631] tty_ldisc_open+0x6c/0xb0 [ 61.241200] tty_set_ldisc+0x287/0x5d0 [ 61.245087] tty_ioctl+0xa2a/0x1430 [ 61.248697] ? tty_fasync+0x2c0/0x2c0 [ 61.252488] ? proc_fail_nth_write+0x7b/0x180 [ 61.256988] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 61.262078] ? _raw_spin_unlock+0x29/0x40 [ 61.266208] ? do_fault_around+0x35e/0x620 [ 61.270424] ? fsnotify+0x974/0x11b0 [ 61.274118] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 61.279041] ? __handle_mm_fault+0x80f/0x4620 [ 61.283518] ? tty_fasync+0x2c0/0x2c0 [ 61.287392] do_vfs_ioctl+0x75a/0xff0 [ 61.291273] ? ioctl_preallocate+0x1a0/0x1a0 [ 61.296439] ? vfs_write+0x319/0x4d0 [ 61.300141] ? SyS_write+0x14d/0x210 [ 61.303895] ? security_file_ioctl+0x83/0xb0 [ 61.308322] SyS_ioctl+0x7f/0xb0 [ 61.311666] ? do_vfs_ioctl+0xff0/0xff0 [ 61.315620] do_syscall_64+0x1d5/0x640 [ 61.319486] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 61.324780] RIP: 0033:0x7f00d84b8cf9 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 61.328467] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 61.336248] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 61.343497] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 61.350743] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 61.357988] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 61.365234] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 [ 61.378943] FAULT_INJECTION: forcing a failure. [ 61.378943] name failslab, interval 1, probability 0, space 0, times 0 [ 61.390386] CPU: 0 PID: 8089 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 61.398249] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 61.407593] Call Trace: [ 61.410271] dump_stack+0x1b2/0x281 [ 61.413894] should_fail.cold+0x10a/0x149 [ 61.418487] should_failslab+0xd6/0x130 [ 61.422439] kmem_cache_alloc_trace+0x29a/0x3d0 [ 61.427173] tty_register_device_attr+0x1d2/0x710 [ 61.432458] ? redirected_tty_write+0xb0/0xb0 [ 61.437122] ? __raw_spin_lock_init+0x28/0x100 [ 61.441697] ? tty_port_init+0xa2/0x190 [ 61.446012] ? gsm_dlci_alloc+0x390/0x460 [ 61.450136] gsmld_open+0x548/0x7b0 [ 61.453762] ? gsm_cleanup_mux+0x3f0/0x3f0 [ 61.458303] tty_ldisc_open+0x6c/0xb0 [ 61.462104] tty_set_ldisc+0x287/0x5d0 [ 61.465993] tty_ioctl+0xa2a/0x1430 [ 61.469656] ? tty_fasync+0x2c0/0x2c0 [ 61.473448] ? proc_fail_nth_write+0x7b/0x180 [ 61.478961] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 61.483890] ? _raw_spin_unlock+0x29/0x40 [ 61.488123] ? do_fault_around+0x35e/0x620 [ 61.492355] ? fsnotify+0x974/0x11b0 [ 61.496069] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 61.501006] ? __handle_mm_fault+0x80f/0x4620 [ 61.505504] ? tty_fasync+0x2c0/0x2c0 [ 61.509296] do_vfs_ioctl+0x75a/0xff0 [ 61.513088] ? ioctl_preallocate+0x1a0/0x1a0 [ 61.517682] ? vfs_write+0x319/0x4d0 [ 61.522164] ? SyS_write+0x14d/0x210 [ 61.525863] ? security_file_ioctl+0x83/0xb0 [ 61.530349] SyS_ioctl+0x7f/0xb0 [ 61.533888] ? do_vfs_ioctl+0xff0/0xff0 [ 61.538412] do_syscall_64+0x1d5/0x640 [ 61.542994] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 61.548168] RIP: 0033:0x7f00d84b8cf9 [ 61.551991] RSP: 002b:00007fff7ab02728 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 61.559876] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f00d84b8cf9 [ 61.567159] RDX: 0000000020000000 RSI: 0000000000005423 RDI: 0000000000000003 [ 61.574879] RBP: 00007fff7ab02740 R08: 0000000000000001 R09: 00007fff7ab026c0 [ 61.582227] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 61.589481] R13: 431bde82d7b634db R14: 00007fff7ab02770 R15: 00007fff7ab02750 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory [ 61.737748] kasan: CONFIG_KASAN_INLINE enabled [ 61.743800] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 61.754878] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 61.761107] Modules linked in: [ 61.764291] CPU: 0 PID: 8089 Comm: syz-executor124 Not tainted 4.14.303-syzkaller #0 [ 61.772674] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 61.782012] task: ffff88809f9283c0 task.stack: ffff888093040000 [ 61.788118] RIP: 0010:cdev_del+0x22/0x90 [ 61.792155] RSP: 0018:ffff888093047b90 EFLAGS: 00010207 [ 61.797499] RAX: dffffc0000000000 RBX: ffff8880b0583a00 RCX: 0000000000000000 [ 61.804770] RDX: 000000000000000c RSI: ffff88809f928c70 RDI: 0000000000000064 [ 61.812016] RBP: 0000000000000000 R08: ffffffff8b9abe68 R09: 0000000000000000 [ 61.819265] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b0583a08 [ 61.826510] R13: ffff8880af09ca88 R14: ffff8880aaeb4f00 R15: ffff8880a904a268 [ 61.833757] FS: 00005555558ce300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 61.841959] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 61.847816] CR2: 00007fffbf5629b0 CR3: 000000009bf63000 CR4: 00000000003406f0 [ 61.855077] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 61.862409] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 61.869654] Call Trace: [ 61.872226] tty_unregister_device+0x101/0x1a0 [ 61.876790] gsmld_close+0xaa/0x1f0 [ 61.880409] ? gsmtty_cleanup+0x150/0x150 [ 61.884531] tty_ldisc_close+0x8c/0xc0 [ 61.888392] tty_ldisc_release+0xe8/0x400 [ 61.892514] tty_release_struct+0x20/0xe0 [ 61.896634] tty_release+0xb3f/0x10d0 [ 61.900409] ? do_tty_hangup+0x30/0x30 [ 61.904273] __fput+0x25f/0x7a0 [ 61.907528] task_work_run+0x11f/0x190 [ 61.911392] do_exit+0xa44/0x2850 [ 61.914824] ? mm_update_next_owner+0x5b0/0x5b0 [ 61.919483] ? vfs_write+0x319/0x4d0 [ 61.923176] ? SyS_write+0x14d/0x210 [ 61.926863] do_group_exit+0x100/0x2e0 [ 61.930725] SyS_exit_group+0x19/0x20 [ 61.934498] ? do_group_exit+0x2e0/0x2e0 [ 61.938532] do_syscall_64+0x1d5/0x640 [ 61.942405] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 61.947578] RIP: 0033:0x7f00d84b7979 [ 61.951274] RSP: 002b:00007fff7ab026d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 61.958959] RAX: ffffffffffffffda RBX: 00007f00d85243d0 RCX: 00007f00d84b7979 [ 61.966199] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 [ 61.973454] RBP: 0000000000000000 R08: ffffffffffffffc0 R09: 00007fff7ab026c0 [ 61.980699] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f00d85243d0 [ 61.987945] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 61.995190] Code: c5 3e f7 ff eb d2 0f 1f 00 55 48 89 fd 48 83 ec 08 e8 f3 7b cd ff 48 8d 7d 64 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 4f [ 62.014279] RIP: cdev_del+0x22/0x90 RSP: ffff888093047b90 [ 62.020961] ---[ end trace 0681131a6c8ff5ae ]--- [ 62.025802] Kernel panic - not syncing: Fatal exception [ 62.031299] Kernel Offset: disabled [ 62.034906] Rebooting in 86400 seconds..