[  OK  ] Started Getty on tty2.
[  OK  ] Started Getty on tty1.
[  OK  ] Started Serial Getty on ttyS0.
[  OK  ] Reached target Login Prompts.
[  OK  ] Reached target Multi-User System.
[  OK  ] Reached target Graphical Interface.
         Starting Update UTMP about System Runlevel Changes...
[  OK  ] Started Update UTMP about System Runlevel Changes.
         Starting Load/Save RF Kill Switch Status...
[  OK  ] Started Load/Save RF Kill Switch Status.

Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.0.219' (ECDSA) to the list of known hosts.
executing program
executing program
syzkaller login: [   33.471144] FAULT_INJECTION: forcing a failure.
[   33.471144] name failslab, interval 1, probability 0, space 0, times 1
[   33.482896] CPU: 1 PID: 8116 Comm: syz-executor175 Not tainted 4.19.211-syzkaller #0
[   33.490763] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   33.500099] Call Trace:
[   33.502676]  dump_stack+0x1fc/0x2ef
[   33.506287]  should_fail.cold+0xa/0xf
[   33.510077]  ? setup_fault_attr+0x200/0x200
[   33.514385]  ? lock_acquire+0x170/0x3c0
[   33.518355]  ? dev_uevent_filter+0xd0/0xd0
[   33.522576]  __should_failslab+0x115/0x180
[   33.526795]  should_failslab+0x5/0x10
[   33.530581]  kmem_cache_alloc_trace+0x284/0x380
[   33.535234]  ? dev_uevent_filter+0xd0/0xd0
[   33.539458]  kobject_uevent_env+0x236/0x1480
[   33.543880]  ? wait_for_completion_io+0x10/0x10
[   33.548535]  device_add+0xb2f/0x16d0
[   33.552248]  ? device_check_offline+0x280/0x280
[   33.556904]  ? kfree_const+0x51/0x60
[   33.560600]  ? rcu_read_lock_sched_held+0x16c/0x1d0
[   33.565602]  ? kfree+0x1e2/0x210
[   33.568951]  device_create_groups_vargs+0x1f4/0x270
[   33.573958]  device_create+0xdf/0x120
[   33.577743]  ? device_create_vargs+0x50/0x50
[   33.582135]  ? pointer+0x850/0x850
[   33.585760]  bdi_register_va.part.0+0x4c/0x750
[   33.590331]  bdi_register+0x12a/0x140
[   33.594118]  ? bdi_register_va+0x80/0x80
[   33.598169]  ? vsnprintf+0x2cc/0x14f0
[   33.601973]  bdi_register_owner+0x59/0x100
[   33.606205]  __device_add_disk+0xd58/0x10c0
[   33.610512]  ? sprintf+0xc0/0x100
[   33.613949]  ? blk_alloc_devt+0x2d0/0x2d0
[   33.618099]  ? __raw_spin_lock_init+0x28/0x100
[   33.622908]  ? __lockdep_init_map+0x100/0x5a0
[   33.627405]  loop_add+0x628/0x8a0
[   33.630845]  loop_control_ioctl+0x16c/0x480
[   33.635153]  ? loop_lookup+0x1d0/0x1d0
[   33.639030]  ? __vfs_write+0xff/0x770
[   33.642923]  ? proc_tgid_io_accounting+0x7f0/0x7f0
[   33.647839]  ? common_file_perm+0x4e5/0x850
[   33.652155]  ? loop_lookup+0x1d0/0x1d0
[   33.656206]  do_vfs_ioctl+0xcdb/0x12e0
[   33.660087]  ? vfs_write+0x3d7/0x540
[   33.663783]  ? ioctl_preallocate+0x200/0x200
[   33.668174]  ? lock_downgrade+0x720/0x720
[   33.672309]  ? check_preemption_disabled+0x41/0x280
[   33.677325]  ? vfs_write+0x393/0x540
[   33.681032]  ? ksys_write+0x1c8/0x2a0
[   33.684834]  ksys_ioctl+0x9b/0xc0
[   33.688282]  __x64_sys_ioctl+0x6f/0xb0
[   33.692171]  ? lockdep_hardirqs_on+0x3a8/0x5c0
[   33.696832]  do_syscall_64+0xf9/0x620
[   33.700629]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   33.705803] RIP: 0033:0x7fdc848d8079
[   33.709508] 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
[   33.728523] RSP: 002b:00007ffd1df90c48 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   33.736227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fdc848d8079
[   33.743494] RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000003
[   33.750763] RBP: 00007ffd1df90c60 R08: 0000000000000002 R09: 0000000000000001
[   33.758196] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004
[   33.765454] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000
executing program
[   33.830278] FAULT_INJECTION: forcing a failure.
[   33.830278] name failslab, interval 1, probability 0, space 0, times 0
[   33.842018] CPU: 1 PID: 8122 Comm: syz-executor175 Not tainted 4.19.211-syzkaller #0
[   33.849892] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   33.859228] Call Trace:
[   33.861821]  dump_stack+0x1fc/0x2ef
[   33.865435]  should_fail.cold+0xa/0xf
[   33.869227]  ? setup_fault_attr+0x200/0x200
[   33.873538]  ? lock_acquire+0x170/0x3c0
[   33.877513]  __should_failslab+0x115/0x180
[   33.881730]  should_failslab+0x5/0x10
[   33.885617]  kmem_cache_alloc+0x277/0x370
[   33.889758]  __kernfs_new_node+0xd2/0x680
[   33.893890]  ? kernfs_dop_revalidate+0x3a0/0x3a0
[   33.898628]  ? __mutex_unlock_slowpath+0xea/0x610
[   33.903449]  ? wait_for_completion_io+0x10/0x10
[   33.908097]  ? kernfs_next_descendant_post+0x19c/0x290
[   33.913456]  kernfs_new_node+0x92/0x120
[   33.917433]  __kernfs_create_file+0x51/0x340
[   33.921825]  sysfs_add_file_mode_ns+0x226/0x540
[   33.926488]  sysfs_merge_group+0x198/0x320
[   33.930707]  ? sysfs_update_group+0x30/0x30
[   33.935013]  ? kernfs_create_link+0x1b9/0x230
[   33.939487]  ? kernfs_put+0x31/0x50
[   33.943108]  dpm_sysfs_add+0x154/0x210
[   33.946977]  device_add+0xa43/0x16d0
[   33.950692]  ? device_check_offline+0x280/0x280
[   33.955792]  ? kfree_const+0x51/0x60
[   33.959496]  ? rcu_read_lock_sched_held+0x16c/0x1d0
[   33.964493]  ? kfree+0x1e2/0x210
[   33.967865]  device_create_groups_vargs+0x1f4/0x270
[   33.972872]  device_create+0xdf/0x120
[   33.976665]  ? device_create_vargs+0x50/0x50
[   33.981064]  ? pointer+0x850/0x850
[   33.984613]  bdi_register_va.part.0+0x4c/0x750
[   33.989182]  bdi_register+0x12a/0x140
[   33.993058]  ? bdi_register_va+0x80/0x80
[   33.997105]  ? vsnprintf+0x2cc/0x14f0
[   34.000890]  bdi_register_owner+0x59/0x100
[   34.005119]  __device_add_disk+0xd58/0x10c0
[   34.009437]  ? sprintf+0xc0/0x100
[   34.012870]  ? blk_alloc_devt+0x2d0/0x2d0
[   34.017094]  ? __raw_spin_lock_init+0x28/0x100
[   34.021691]  ? __lockdep_init_map+0x100/0x5a0
[   34.026188]  loop_add+0x628/0x8a0
[   34.029633]  loop_control_ioctl+0x16c/0x480
[   34.033946]  ? loop_lookup+0x1d0/0x1d0
[   34.037819]  ? __vfs_write+0xff/0x770
[   34.041610]  ? proc_tgid_io_accounting+0x7f0/0x7f0
[   34.046525]  ? common_file_perm+0x4e5/0x850
[   34.050831]  ? loop_lookup+0x1d0/0x1d0
[   34.054702]  do_vfs_ioctl+0xcdb/0x12e0
[   34.058573]  ? vfs_write+0x3d7/0x540
[   34.062285]  ? ioctl_preallocate+0x200/0x200
[   34.066680]  ? lock_downgrade+0x720/0x720
[   34.070833]  ? check_preemption_disabled+0x41/0x280
[   34.076005]  ? vfs_write+0x393/0x540
[   34.079704]  ? ksys_write+0x1c8/0x2a0
[   34.083491]  ksys_ioctl+0x9b/0xc0
[   34.086928]  __x64_sys_ioctl+0x6f/0xb0
[   34.090846]  ? lockdep_hardirqs_on+0x3a8/0x5c0
[   34.095422]  do_syscall_64+0xf9/0x620
[   34.099212]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   34.104389] RIP: 0033:0x7fdc848d8079
[   34.108086] 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
[   34.126973] RSP: 002b:00007ffd1df90c48 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   34.134675] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fdc848d8079
[   34.141938] RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000003
[   34.149282] RBP: 00007ffd1df90c60 R08: 0000000000000002 R09: 0000000000000001
[   34.156534] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004
[   34.163784] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000
[   34.182058] ------------[ cut here ]------------
[   34.187392] WARNING: CPU: 1 PID: 8122 at block/genhd.c:719 __device_add_disk.cold+0x69/0x188
[   34.195984] Kernel panic - not syncing: panic_on_warn set ...
[   34.195984] 
[   34.203353] CPU: 1 PID: 8122 Comm: syz-executor175 Not tainted 4.19.211-syzkaller #0
[   34.211317] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   34.220669] Call Trace:
[   34.223431]  dump_stack+0x1fc/0x2ef
[   34.227152]  panic+0x26a/0x50e
[   34.230330]  ? __warn_printk+0xf3/0xf3
[   34.234208]  ? __device_add_disk.cold+0x69/0x188
[   34.238969]  ? __probe_kernel_read+0x130/0x1b0
[   34.243535]  ? __warn.cold+0x5/0x5a
[   34.247145]  ? __warn+0xe4/0x200
[   34.250506]  ? __device_add_disk.cold+0x69/0x188
[   34.255249]  __warn.cold+0x20/0x5a
[   34.258777]  ? __device_add_disk.cold+0x69/0x188
[   34.263516]  report_bug+0x262/0x2b0
[   34.267172]  do_error_trap+0x1d7/0x310
[   34.271040]  ? math_error+0x310/0x310
[   34.274993]  ? __irq_work_queue_local+0x101/0x160
[   34.279817]  ? irq_work_queue+0x29/0x80
[   34.283775]  ? error_entry+0x72/0xd0
[   34.287473]  ? trace_hardirqs_off_caller+0x6e/0x210
[   34.292469]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   34.297297]  invalid_op+0x14/0x20
[   34.300734] RIP: 0010:__device_add_disk.cold+0x69/0x188
[   34.306078] 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
[   34.324971] RSP: 0018:ffff8880b44bfb38 EFLAGS: 00010286
[   34.330504] RAX: 0000000000000024 RBX: 0000000000000001 RCX: 0000000000000000
[   34.337752] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed1016897f59
[   34.345017] RBP: ffff8880b1578c00 R08: 0000000000000024 R09: 0000000000000000
[   34.352269] R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880b1578c90
[   34.359583] R13: ffff8880b1579290 R14: 00000000fffffff4 R15: ffff8880b1578c04
[   34.366845]  ? vprintk_func+0x81/0x180
[   34.370728]  ? __device_add_disk.cold+0x69/0x188
[   34.375465]  ? sprintf+0xc0/0x100
[   34.378900]  ? blk_alloc_devt+0x2d0/0x2d0
[   34.383063]  ? __raw_spin_lock_init+0x28/0x100
[   34.387637]  ? __lockdep_init_map+0x100/0x5a0
[   34.392115]  loop_add+0x628/0x8a0
[   34.395662]  loop_control_ioctl+0x16c/0x480
[   34.399971]  ? loop_lookup+0x1d0/0x1d0
[   34.403854]  ? __vfs_write+0xff/0x770
[   34.407639]  ? proc_tgid_io_accounting+0x7f0/0x7f0
[   34.412572]  ? common_file_perm+0x4e5/0x850
[   34.416882]  ? loop_lookup+0x1d0/0x1d0
[   34.420751]  do_vfs_ioctl+0xcdb/0x12e0
[   34.424618]  ? vfs_write+0x3d7/0x540
[   34.428323]  ? ioctl_preallocate+0x200/0x200
[   34.432811]  ? lock_downgrade+0x720/0x720
[   34.436941]  ? check_preemption_disabled+0x41/0x280
[   34.441958]  ? vfs_write+0x393/0x540
[   34.445915]  ? ksys_write+0x1c8/0x2a0
[   34.449701]  ksys_ioctl+0x9b/0xc0
[   34.453135]  __x64_sys_ioctl+0x6f/0xb0
[   34.457006]  ? lockdep_hardirqs_on+0x3a8/0x5c0
[   34.461567]  do_syscall_64+0xf9/0x620
[   34.465349]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   34.470630] RIP: 0033:0x7fdc848d8079
[   34.474323] 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
[   34.493212] RSP: 002b:00007ffd1df90c48 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   34.500906] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fdc848d8079
[   34.508162] RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000003
[   34.515411] RBP: 00007ffd1df90c60 R08: 0000000000000002 R09: 0000000000000001
[   34.522671] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004
[   34.529934] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000
[   34.537591] Kernel Offset: disabled
[   34.541290] Rebooting in 86400 seconds..