[[0;32m OK [0m] Started Getty on tty2.
[[0;32m OK [0m] Started Getty on tty1.
[[0;32m OK [0m] Started Serial Getty on ttyS0.
[[0;32m OK [0m] Reached target Login Prompts.
[[0;32m OK [0m] Reached target Multi-User System.
[[0;32m OK [0m] Reached target Graphical Interface.
Starting Update UTMP about System Runlevel Changes...
[[0;32m OK [0m] Started Update UTMP about System Runlevel Changes.
Starting Load/Save RF Kill Switch Status...
[[0;32m OK [0m] Started Load/Save RF Kill Switch Status.
Debian GNU/Linux 9 syzkaller ttyS0
Warning: Permanently added '10.128.0.184' (ECDSA) to the list of known hosts.
executing program
executing program
syzkaller login: [ 28.200225] FAULT_INJECTION: forcing a failure.
[ 28.200225] name failslab, interval 1, probability 0, space 0, times 1
[ 28.211634] CPU: 0 PID: 7982 Comm: syz-executor192 Not tainted 4.14.284-syzkaller #0
[ 28.219500] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 28.228841] Call Trace:
[ 28.231410] dump_stack+0x1b2/0x281
[ 28.235016] should_fail.cold+0x10a/0x149
[ 28.239181] should_failslab+0xd6/0x130
[ 28.243132] kmem_cache_alloc+0x28e/0x3c0
[ 28.247257] __kernfs_new_node+0x6f/0x470
[ 28.251385] kernfs_new_node+0x7b/0xe0
[ 28.255260] __kernfs_create_file+0x3d/0x320
[ 28.259644] sysfs_add_file_mode_ns+0x1e1/0x450
[ 28.264303] sysfs_merge_group+0xdc/0x200
[ 28.268427] dpm_sysfs_add+0x122/0x1c0
[ 28.272289] device_add+0x977/0x15c0
[ 28.275982] ? device_is_dependent+0x2a0/0x2a0
[ 28.280538] ? kfree+0x1f0/0x250
[ 28.283891] device_create_groups_vargs+0x1dc/0x250
[ 28.288884] device_create_vargs+0x3a/0x50
[ 28.293107] bdi_register_va.part.0+0x35/0x650
[ 28.297667] bdi_register+0x101/0x110
[ 28.301460] ? bdi_register_va+0x80/0x80
[ 28.305523] ? vsnprintf+0x260/0x1340
[ 28.309302] bdi_register_owner+0x59/0xf0
[ 28.313437] device_add_disk+0x5bb/0xdc0
[ 28.317482] ? sprintf+0xa7/0xd0
[ 28.320822] ? blk_alloc_devt+0x310/0x310
[ 28.324950] ? __lockdep_init_map+0x100/0x560
[ 28.329430] ? __lockdep_init_map+0x100/0x560
[ 28.333902] loop_add+0x615/0x830
[ 28.337329] ? loop_queue_rq+0x280/0x280
[ 28.341364] ? loop_queue_work+0x21e0/0x21e0
[ 28.345750] ? do_fault_around+0x35e/0x620
[ 28.349983] loop_control_ioctl+0x11a/0x3f0
[ 28.354288] ? loop_lookup+0x190/0x190
[ 28.358176] ? loop_lookup+0x190/0x190
[ 28.362037] do_vfs_ioctl+0x75a/0xff0
[ 28.365823] ? ioctl_preallocate+0x1a0/0x1a0
[ 28.370208] ? vfs_write+0x319/0x4d0
[ 28.373899] ? SyS_write+0x14d/0x210
[ 28.377600] ? security_file_ioctl+0x83/0xb0
[ 28.381998] SyS_ioctl+0x7f/0xb0
[ 28.385339] ? do_vfs_ioctl+0xff0/0xff0
[ 28.389300] do_syscall_64+0x1d5/0x640
[ 28.393191] entry_SYSCALL_64_after_hwframe+0x46/0xbb
[ 28.398358] RIP: 0033:0x7faa106a8079
[ 28.402046] RSP: 002b:00007ffc3e0199c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[ 28.409727] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007faa106a8079
[ 28.416971] RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000003
[ 28.424225] RBP: 00007ffc3e0199e0 R08: 0000000000000002 R09: 0000000000000001
[ 28.436602] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004
[ 28.443847] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000
[ 28.467272] kasan: CONFIG_KASAN_INLINE enabled
[ 28.472026] kasan: GPF could be caused by NULL-ptr deref or user memory access
[ 28.479451] general protection fault: 0000 [#1] PREEMPT SMP KASAN
[ 28.485671] Modules linked in:
[ 28.488841] CPU: 1 PID: 7982 Comm: syz-executor192 Not tainted 4.14.284-syzkaller #0
[ 28.496692] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 28.506039] task: ffff8880b34b65c0 task.stack: ffff8880a2f10000
[ 28.512073] RIP: 0010:sysfs_do_create_link_sd+0x56/0x120
[ 28.517507] RSP: 0018:ffff8880a2f17b48 EFLAGS: 00010202
[ 28.522844] RAX: dffffc0000000000 RBX: 0000000000000010 RCX: 0000000000000935
[ 28.530097] RDX: 0000000000000008 RSI: 0000000000000001 RDI: 0000000000000040
[ 28.537342] RBP: ffffffff87cbc7a0 R08: ffffffff8b9ab4a8 R09: 00000000000400c7
[ 28.544589] R10: ffff8880b34b6e70 R11: ffff8880b34b65c0 R12: ffff8880b331c0e0
[ 28.551834] R13: ffffffff87cbc7a0 R14: 0000000000000001 R15: ffff8880b314335c
[ 28.559078] FS: 0000555555975300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000
[ 28.567280] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 28.573135] CR2: 000056514e0dc848 CR3: 000000009a84d000 CR4: 00000000003406e0
[ 28.580393] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 28.587639] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 28.594881] Call Trace:
[ 28.597443] sysfs_create_link+0x5f/0xc0
[ 28.601481] device_add_disk+0x9f8/0xdc0
[ 28.605533] ? sprintf+0xa7/0xd0
[ 28.608870] ? blk_alloc_devt+0x310/0x310
[ 28.612994] ? __lockdep_init_map+0x100/0x560
[ 28.617475] ? __lockdep_init_map+0x100/0x560
[ 28.626550] loop_add+0x615/0x830
[ 28.629979] ? loop_queue_rq+0x280/0x280
[ 28.634011] ? loop_queue_work+0x21e0/0x21e0
[ 28.638392] ? do_fault_around+0x35e/0x620
[ 28.642616] loop_control_ioctl+0x11a/0x3f0
[ 28.646918] ? loop_lookup+0x190/0x190
[ 28.650782] ? loop_lookup+0x190/0x190
[ 28.654643] do_vfs_ioctl+0x75a/0xff0
[ 28.658418] ? ioctl_preallocate+0x1a0/0x1a0
[ 28.662800] ? vfs_write+0x319/0x4d0
[ 28.666500] ? SyS_write+0x14d/0x210
[ 28.670185] ? security_file_ioctl+0x83/0xb0
[ 28.674565] SyS_ioctl+0x7f/0xb0
[ 28.677906] ? do_vfs_ioctl+0xff0/0xff0
[ 28.681853] do_syscall_64+0x1d5/0x640
[ 28.685715] entry_SYSCALL_64_after_hwframe+0x46/0xbb
[ 28.690892] RIP: 0033:0x7faa106a8079
[ 28.694587] RSP: 002b:00007ffc3e0199c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[ 28.702270] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007faa106a8079
[ 28.709511] RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000003
[ 28.716767] RBP: 00007ffc3e0199e0 R08: 0000000000000002 R09: 0000000000000001
[ 28.724014] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004
[ 28.731270] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000
[ 28.738519] Code: 84 a1 00 00 00 e8 1b 5c b1 ff 48 c7 c7 20 d1 04 89 e8 1f a0 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 e2
[ 28.757587] RIP: sysfs_do_create_link_sd+0x56/0x120 RSP: ffff8880a2f17b48
[ 28.764624] ---[ end trace a4097026475d7cab ]---
[ 28.769406] Kernel panic - not syncing: Fatal exception
[ 28.774922] Kernel Offset: disabled
[ 28.778533] Rebooting in 86400 seconds..