Warning: Permanently added '10.128.0.229' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 36.095562] FAULT_INJECTION: forcing a failure. [ 36.095562] name failslab, interval 1, probability 0, space 0, times 1 [ 36.107119] CPU: 1 PID: 8123 Comm: syz-executor364 Not tainted 4.19.211-syzkaller #0 [ 36.115083] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 36.124507] Call Trace: [ 36.127088] dump_stack+0x1fc/0x2ef [ 36.130717] should_fail.cold+0xa/0xf [ 36.134645] ? setup_fault_attr+0x200/0x200 [ 36.138954] ? lock_acquire+0x170/0x3c0 [ 36.142912] __should_failslab+0x115/0x180 [ 36.147130] should_failslab+0x5/0x10 [ 36.150923] kmem_cache_alloc+0x277/0x370 [ 36.155491] __kernfs_new_node+0xd2/0x680 [ 36.159626] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 36.164374] ? __mutex_unlock_slowpath+0xea/0x610 [ 36.169221] ? wait_for_completion_io+0x10/0x10 [ 36.173887] ? kernfs_next_descendant_post+0x19c/0x290 [ 36.179149] kernfs_new_node+0x92/0x120 [ 36.183109] __kernfs_create_file+0x51/0x340 [ 36.187593] sysfs_add_file_mode_ns+0x226/0x540 [ 36.192252] sysfs_merge_group+0x198/0x320 [ 36.196468] ? sysfs_update_group+0x30/0x30 [ 36.200772] ? kernfs_create_link+0x1b9/0x230 [ 36.205248] ? kernfs_put+0x31/0x50 [ 36.208855] dpm_sysfs_add+0x154/0x210 [ 36.212726] device_add+0xa43/0x16d0 [ 36.216519] ? device_check_offline+0x280/0x280 [ 36.221173] ? kfree_const+0x51/0x60 [ 36.224865] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 36.229861] ? kfree+0x1e2/0x210 [ 36.233214] device_create_groups_vargs+0x1f4/0x270 [ 36.238221] device_create+0xdf/0x120 [ 36.242013] ? device_create_vargs+0x50/0x50 [ 36.246402] ? pointer+0x850/0x850 [ 36.249926] bdi_register_va.part.0+0x4c/0x750 [ 36.254487] bdi_register+0x12a/0x140 [ 36.258264] ? bdi_register_va+0x80/0x80 [ 36.262328] ? vsnprintf+0x2cc/0x14f0 [ 36.266118] bdi_register_owner+0x59/0x100 [ 36.270338] __device_add_disk+0xd58/0x10c0 [ 36.274643] ? sprintf+0xc0/0x100 [ 36.278078] ? blk_alloc_devt+0x2d0/0x2d0 [ 36.282211] ? __raw_spin_lock_init+0x28/0x100 [ 36.286773] ? __lockdep_init_map+0x100/0x5a0 [ 36.291253] loop_add+0x628/0x8a0 [ 36.294687] loop_control_ioctl+0x16c/0x480 [ 36.298991] ? loop_lookup+0x1d0/0x1d0 [ 36.302858] ? __vfs_write+0xff/0x770 [ 36.306636] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 36.311542] ? common_file_perm+0x4e5/0x850 [ 36.315849] ? loop_lookup+0x1d0/0x1d0 [ 36.319718] do_vfs_ioctl+0xcdb/0x12e0 [ 36.323583] ? vfs_write+0x3d7/0x540 [ 36.327276] ? ioctl_preallocate+0x200/0x200 [ 36.331664] ? lock_downgrade+0x720/0x720 [ 36.335798] ? check_preemption_disabled+0x41/0x280 [ 36.340799] ? vfs_write+0x393/0x540 [ 36.344495] ? ksys_write+0x1c8/0x2a0 [ 36.348280] ksys_ioctl+0x9b/0xc0 [ 36.351713] __x64_sys_ioctl+0x6f/0xb0 [ 36.355595] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 36.360159] do_syscall_64+0xf9/0x620 [ 36.363942] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 36.369111] RIP: 0033:0x7fef76432079 [ 36.372808] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 36.391687] RSP: 002b:00007ffddcccb2a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 36.399386] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fef76432079 [ 36.406635] RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000003 [ 36.413884] RBP: 00007ffddcccb2c0 R08: 0000000000000002 R09: 0000000000000001 [ 36.421134] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 36.428383] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 36.437856] ------------[ cut here ]------------ [ 36.444160] WARNING: CPU: 0 PID: 8123 at block/genhd.c:719 __device_add_disk.cold+0x69/0x188 [ 36.452745] Kernel panic - not syncing: panic_on_warn set ... [ 36.452745] [ 36.460108] CPU: 0 PID: 8123 Comm: syz-executor364 Not tainted 4.19.211-syzkaller #0 [ 36.467992] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 36.477341] Call Trace: [ 36.479913] dump_stack+0x1fc/0x2ef [ 36.483521] panic+0x26a/0x50e [ 36.486691] ? __warn_printk+0xf3/0xf3 [ 36.490558] ? __device_add_disk.cold+0x69/0x188 [ 36.495295] ? __probe_kernel_read+0x130/0x1b0 [ 36.499860] ? __warn.cold+0x5/0x5a [ 36.503463] ? __warn+0xe4/0x200 [ 36.506806] ? __device_add_disk.cold+0x69/0x188 [ 36.511541] __warn.cold+0x20/0x5a [ 36.515057] ? io_schedule_timeout+0x140/0x140 [ 36.519615] ? __device_add_disk.cold+0x69/0x188 [ 36.524348] report_bug+0x262/0x2b0 [ 36.527955] do_error_trap+0x1d7/0x310 [ 36.531821] ? math_error+0x310/0x310 [ 36.535607] ? __irq_work_queue_local+0x101/0x160 [ 36.540430] ? irq_work_queue+0x29/0x80 [ 36.544382] ? error_entry+0x72/0xd0 [ 36.548074] ? trace_hardirqs_off_caller+0x6e/0x210 [ 36.553070] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 36.557904] invalid_op+0x14/0x20 [ 36.561343] RIP: 0010:__device_add_disk.cold+0x69/0x188 [ 36.566685] Code: 02 84 c0 74 08 3c 03 0f 8e a8 00 00 00 44 8b a5 f0 05 00 00 e9 67 ad 6a fb e8 05 45 66 f9 48 c7 c7 60 75 b2 88 e8 64 76 f7 ff <0f> 0b e9 8f b9 6a fb e8 ed 44 66 f9 48 c7 c7 60 75 b2 88 e8 4c 76 [ 36.585565] RSP: 0018:ffff8880b2a37b38 EFLAGS: 00010286 [ 36.590904] RAX: 0000000000000024 RBX: 0000000000000001 RCX: 0000000000000000 [ 36.598150] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed1016546f59 [ 36.605403] RBP: ffff888096c23380 R08: 0000000000000024 R09: 0000000000000000 [ 36.612677] R10: 0000000000000005 R11: 0000000000000000 R12: ffff888096c23410 [ 36.619924] R13: ffff888096c23a10 R14: 00000000fffffff4 R15: ffff888096c23384 [ 36.627181] ? vprintk_func+0x81/0x180 [ 36.631048] ? __device_add_disk.cold+0x69/0x188 [ 36.635784] ? sprintf+0xc0/0x100 [ 36.639223] ? blk_alloc_devt+0x2d0/0x2d0 [ 36.643356] ? __raw_spin_lock_init+0x28/0x100 [ 36.647915] ? __lockdep_init_map+0x100/0x5a0 [ 36.652390] loop_add+0x628/0x8a0 [ 36.655826] loop_control_ioctl+0x16c/0x480 [ 36.660126] ? loop_lookup+0x1d0/0x1d0 [ 36.663993] ? __vfs_write+0xff/0x770 [ 36.667771] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 36.672679] ? common_file_perm+0x4e5/0x850 [ 36.676978] ? loop_lookup+0x1d0/0x1d0 [ 36.680844] do_vfs_ioctl+0xcdb/0x12e0 [ 36.684711] ? vfs_write+0x3d7/0x540 [ 36.688402] ? ioctl_preallocate+0x200/0x200 [ 36.692789] ? lock_downgrade+0x720/0x720 [ 36.696918] ? check_preemption_disabled+0x41/0x280 [ 36.701912] ? vfs_write+0x393/0x540 [ 36.705603] ? ksys_write+0x1c8/0x2a0 [ 36.709381] ksys_ioctl+0x9b/0xc0 [ 36.712817] __x64_sys_ioctl+0x6f/0xb0 [ 36.716679] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 36.721237] do_syscall_64+0xf9/0x620 [ 36.725018] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 36.730201] RIP: 0033:0x7fef76432079 [ 36.733892] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 36.752771] RSP: 002b:00007ffddcccb2a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 36.760454] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fef76432079 [ 36.767702] RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000003 [ 36.774949] RBP: 00007ffddcccb2c0 R08: 0000000000000002 R09: 0000000000000001 [ 36.782195] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 36.789440] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 36.797053] Kernel Offset: disabled [ 36.800729] Rebooting in 86400 seconds..