[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.61' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 29.002015] FAULT_INJECTION: forcing a failure. [ 29.002015] name failslab, interval 1, probability 0, space 0, times 1 [ 29.013397] CPU: 1 PID: 7976 Comm: syz-executor412 Not tainted 4.14.282-syzkaller #0 [ 29.021276] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.030616] Call Trace: [ 29.033192] dump_stack+0x1b2/0x281 [ 29.036808] should_fail.cold+0x10a/0x149 [ 29.040968] should_failslab+0xd6/0x130 [ 29.044927] __kmalloc+0x2c1/0x400 [ 29.048466] ? kobject_get_path+0xb5/0x230 [ 29.052680] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 29.058112] kobject_get_path+0xb5/0x230 [ 29.062156] kobject_uevent_env+0x230/0xf30 [ 29.066457] ? wait_for_completion_io+0x10/0x10 [ 29.071119] device_add+0xa47/0x15c0 [ 29.074812] ? device_is_dependent+0x2a0/0x2a0 [ 29.079373] ? kfree+0x1f0/0x250 [ 29.082730] device_create_groups_vargs+0x1dc/0x250 [ 29.087724] device_create_vargs+0x3a/0x50 [ 29.091942] bdi_register_va.part.0+0x35/0x650 [ 29.096501] bdi_register+0x101/0x110 [ 29.100278] ? bdi_register_va+0x80/0x80 [ 29.104320] ? vsnprintf+0x260/0x1340 [ 29.108114] bdi_register_owner+0x59/0xf0 [ 29.112242] device_add_disk+0x5bb/0xdc0 [ 29.116299] ? sprintf+0xa7/0xd0 [ 29.119658] ? blk_alloc_devt+0x310/0x310 [ 29.123843] ? __lockdep_init_map+0x100/0x560 [ 29.128689] ? __lockdep_init_map+0x100/0x560 [ 29.133161] loop_add+0x615/0x830 [ 29.136593] ? loop_queue_rq+0x280/0x280 [ 29.140633] ? loop_queue_work+0x21e0/0x21e0 [ 29.145016] ? do_fault_around+0x35e/0x620 [ 29.149244] loop_control_ioctl+0x11a/0x3f0 [ 29.153543] ? loop_lookup+0x190/0x190 [ 29.157409] ? loop_lookup+0x190/0x190 [ 29.161275] do_vfs_ioctl+0x75a/0xff0 [ 29.165053] ? ioctl_preallocate+0x1a0/0x1a0 [ 29.169458] ? vfs_write+0x319/0x4d0 [ 29.173146] ? SyS_write+0x14d/0x210 [ 29.176837] ? security_file_ioctl+0x83/0xb0 [ 29.181225] SyS_ioctl+0x7f/0xb0 [ 29.184569] ? do_vfs_ioctl+0xff0/0xff0 [ 29.188517] do_syscall_64+0x1d5/0x640 [ 29.192471] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 29.197639] RIP: 0033:0x7fe06bb99079 executing program executing program [ 29.201329] RSP: 002b:00007fffb63545f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 29.209013] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fe06bb99079 [ 29.216256] RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000003 [ 29.223503] RBP: 00007fffb6354610 R08: 0000000000000002 R09: 0000000000000001 [ 29.231271] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 29.238515] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 executing program [ 29.312593] FAULT_INJECTION: forcing a failure. [ 29.312593] name failslab, interval 1, probability 0, space 0, times 0 [ 29.323885] CPU: 0 PID: 7982 Comm: syz-executor412 Not tainted 4.14.282-syzkaller #0 [ 29.331756] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.341106] Call Trace: [ 29.343728] dump_stack+0x1b2/0x281 [ 29.347338] should_fail.cold+0x10a/0x149 [ 29.351464] should_failslab+0xd6/0x130 [ 29.355425] kmem_cache_alloc_trace+0x29a/0x3d0 [ 29.360079] ? dev_uevent_filter+0xd0/0xd0 [ 29.364306] kobject_uevent_env+0x20c/0xf30 [ 29.368643] ? wait_for_completion_io+0x10/0x10 [ 29.373297] device_add+0xa47/0x15c0 [ 29.377122] ? device_is_dependent+0x2a0/0x2a0 [ 29.381689] ? kfree+0x1f0/0x250 [ 29.385043] device_create_groups_vargs+0x1dc/0x250 [ 29.390039] device_create_vargs+0x3a/0x50 [ 29.394255] bdi_register_va.part.0+0x35/0x650 [ 29.398822] bdi_register+0x101/0x110 [ 29.402632] ? bdi_register_va+0x80/0x80 [ 29.406673] ? vsnprintf+0x260/0x1340 [ 29.410449] bdi_register_owner+0x59/0xf0 [ 29.414587] device_add_disk+0x5bb/0xdc0 [ 29.418630] ? sprintf+0xa7/0xd0 [ 29.421972] ? blk_alloc_devt+0x310/0x310 [ 29.426097] ? __lockdep_init_map+0x100/0x560 [ 29.430568] ? __lockdep_init_map+0x100/0x560 [ 29.435044] loop_add+0x615/0x830 [ 29.438479] ? loop_queue_rq+0x280/0x280 [ 29.442518] ? loop_queue_work+0x21e0/0x21e0 [ 29.446905] ? do_fault_around+0x35e/0x620 [ 29.451123] loop_control_ioctl+0x11a/0x3f0 [ 29.455422] ? loop_lookup+0x190/0x190 [ 29.459288] ? loop_lookup+0x190/0x190 [ 29.463152] do_vfs_ioctl+0x75a/0xff0 [ 29.466933] ? ioctl_preallocate+0x1a0/0x1a0 [ 29.471338] ? vfs_write+0x319/0x4d0 [ 29.475032] ? SyS_write+0x14d/0x210 [ 29.478744] ? security_file_ioctl+0x83/0xb0 [ 29.483131] SyS_ioctl+0x7f/0xb0 [ 29.486483] ? do_vfs_ioctl+0xff0/0xff0 [ 29.490444] do_syscall_64+0x1d5/0x640 [ 29.494312] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 29.499482] RIP: 0033:0x7fe06bb99079 [ 29.503174] RSP: 002b:00007fffb63545f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 executing program [ 29.510864] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fe06bb99079 [ 29.518109] RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000003 [ 29.525368] RBP: 00007fffb6354610 R08: 0000000000000002 R09: 0000000000000001 [ 29.532665] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 29.539914] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 29.575004] FAULT_INJECTION: forcing a failure. [ 29.575004] name failslab, interval 1, probability 0, space 0, times 0 [ 29.586244] CPU: 0 PID: 7991 Comm: syz-executor412 Not tainted 4.14.282-syzkaller #0 [ 29.594107] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.603441] Call Trace: [ 29.606014] dump_stack+0x1b2/0x281 [ 29.609620] should_fail.cold+0x10a/0x149 [ 29.613746] should_failslab+0xd6/0x130 [ 29.617704] kmem_cache_alloc+0x28e/0x3c0 [ 29.621831] __kernfs_new_node+0x6f/0x470 [ 29.625963] kernfs_new_node+0x7b/0xe0 [ 29.629828] __kernfs_create_file+0x3d/0x320 [ 29.634228] sysfs_add_file_mode_ns+0x1e1/0x450 [ 29.638879] sysfs_merge_group+0xdc/0x200 [ 29.643008] dpm_sysfs_add+0x122/0x1c0 [ 29.646873] device_add+0x977/0x15c0 [ 29.650565] ? device_is_dependent+0x2a0/0x2a0 [ 29.655125] ? kfree+0x1f0/0x250 [ 29.658475] device_create_groups_vargs+0x1dc/0x250 [ 29.663471] device_create_vargs+0x3a/0x50 [ 29.667687] bdi_register_va.part.0+0x35/0x650 [ 29.672246] bdi_register+0x101/0x110 [ 29.676023] ? bdi_register_va+0x80/0x80 [ 29.680063] ? vsnprintf+0x260/0x1340 [ 29.683855] bdi_register_owner+0x59/0xf0 [ 29.687980] device_add_disk+0x5bb/0xdc0 [ 29.692032] ? sprintf+0xa7/0xd0 [ 29.695381] ? blk_alloc_devt+0x310/0x310 [ 29.699516] ? __lockdep_init_map+0x100/0x560 [ 29.703992] ? __lockdep_init_map+0x100/0x560 [ 29.708470] loop_add+0x615/0x830 [ 29.711919] ? loop_queue_rq+0x280/0x280 [ 29.715973] ? loop_queue_work+0x21e0/0x21e0 [ 29.720360] ? do_fault_around+0x35e/0x620 [ 29.724573] loop_control_ioctl+0x11a/0x3f0 [ 29.729069] ? loop_lookup+0x190/0x190 [ 29.732935] ? loop_lookup+0x190/0x190 [ 29.736818] do_vfs_ioctl+0x75a/0xff0 [ 29.740598] ? ioctl_preallocate+0x1a0/0x1a0 [ 29.744986] ? vfs_write+0x319/0x4d0 [ 29.748683] ? SyS_write+0x14d/0x210 [ 29.752372] ? security_file_ioctl+0x83/0xb0 [ 29.756755] SyS_ioctl+0x7f/0xb0 [ 29.760098] ? do_vfs_ioctl+0xff0/0xff0 [ 29.764055] do_syscall_64+0x1d5/0x640 [ 29.767953] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 29.773135] RIP: 0033:0x7fe06bb99079 [ 29.776825] RSP: 002b:00007fffb63545f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 29.784686] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fe06bb99079 [ 29.792108] RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000003 [ 29.799358] RBP: 00007fffb6354610 R08: 0000000000000002 R09: 0000000000000001 [ 29.806606] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 29.813857] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 29.826065] kasan: CONFIG_KASAN_INLINE enabled [ 29.830804] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 29.838250] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 29.844485] Modules linked in: [ 29.847673] CPU: 0 PID: 7991 Comm: syz-executor412 Not tainted 4.14.282-syzkaller #0 [ 29.855537] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.864873] task: ffff8880b3266000 task.stack: ffff8880957c8000 [ 29.870912] RIP: 0010:sysfs_do_create_link_sd+0x56/0x120 [ 29.876335] RSP: 0018:ffff8880957cfb48 EFLAGS: 00010202 [ 29.881670] RAX: dffffc0000000000 RBX: 0000000000000010 RCX: 0000000000007e95 [ 29.888913] RDX: 0000000000000008 RSI: 0000000000000001 RDI: 0000000000000040 [ 29.896250] RBP: ffffffff87cbc460 R08: ffffffff8b9e4f68 R09: 00000000000400c7 [ 29.903506] R10: ffff8880b32668b0 R11: ffff8880b3266000 R12: ffff8880b4adfd20 [ 29.910775] R13: ffffffff87cbc460 R14: 0000000000000001 R15: ffff8880959dab1c [ 29.918041] FS: 0000555556672300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 29.926380] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.932237] CR2: 00007ffed86aee47 CR3: 000000009ac7b000 CR4: 00000000003406f0 [ 29.939488] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.946862] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.954104] Call Trace: [ 29.956690] sysfs_create_link+0x5f/0xc0 [ 29.960732] device_add_disk+0x9f8/0xdc0 [ 29.964769] ? sprintf+0xa7/0xd0 [ 29.968121] ? blk_alloc_devt+0x310/0x310 [ 29.972377] ? __lockdep_init_map+0x100/0x560 [ 29.976866] ? __lockdep_init_map+0x100/0x560 [ 29.981343] loop_add+0x615/0x830 [ 29.984775] ? loop_queue_rq+0x280/0x280 [ 29.988808] ? loop_queue_work+0x21e0/0x21e0 [ 29.993199] ? do_fault_around+0x35e/0x620 [ 29.997408] loop_control_ioctl+0x11a/0x3f0 [ 30.001704] ? loop_lookup+0x190/0x190 [ 30.005566] ? loop_lookup+0x190/0x190 [ 30.009431] do_vfs_ioctl+0x75a/0xff0 [ 30.013207] ? ioctl_preallocate+0x1a0/0x1a0 [ 30.017588] ? vfs_write+0x319/0x4d0 [ 30.021275] ? SyS_write+0x14d/0x210 [ 30.024964] ? security_file_ioctl+0x83/0xb0 [ 30.029345] SyS_ioctl+0x7f/0xb0 [ 30.032686] ? do_vfs_ioctl+0xff0/0xff0 [ 30.036637] do_syscall_64+0x1d5/0x640 [ 30.040506] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 30.045671] RIP: 0033:0x7fe06bb99079 [ 30.049363] RSP: 002b:00007fffb63545f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 30.057154] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fe06bb99079 [ 30.064421] RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000003 [ 30.071666] RBP: 00007fffb6354610 R08: 0000000000000002 R09: 0000000000000001 [ 30.078925] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 30.086169] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 30.093414] Code: 84 a1 00 00 00 e8 cb 5b b1 ff 48 c7 c7 80 ce 04 89 e8 8f 8c 80 05 48 8d 7b 30 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 a7 00 00 00 4c 8b 6b 30 4d 85 ed 74 4f e8 92 [ 30.112479] RIP: sysfs_do_create_link_sd+0x56/0x120 RSP: ffff8880957cfb48 [ 30.119458] ---[ end trace 96a7bcefac29eec8 ]--- [ 30.124317] Kernel panic - not syncing: Fatal exception [ 30.129725] Kernel Offset: disabled [ 30.133331] Rebooting in 86400 seconds..