[ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ OK ] Started Getty on tty2. [ OK ] Reached target Login Prompts. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Reached target Multi-User System. [ 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 '10.128.0.196' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 27.091300] FAULT_INJECTION: forcing a failure. [ 27.091300] name failslab, interval 1, probability 0, space 0, times 1 [ 27.102986] CPU: 1 PID: 7965 Comm: syz-executor222 Not tainted 4.14.281-syzkaller #0 [ 27.110848] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 27.120179] Call Trace: [ 27.122763] dump_stack+0x1b2/0x281 [ 27.126372] should_fail.cold+0x10a/0x149 [ 27.130516] should_failslab+0xd6/0x130 [ 27.134466] __kmalloc+0x2c1/0x400 [ 27.137982] ? tracepoint_add_func+0x33f/0xa40 [ 27.142554] ? blk_add_trace_rq_complete+0x190/0x190 [ 27.147634] tracepoint_add_func+0x33f/0xa40 [ 27.152021] ? blk_add_trace_rq_complete+0x190/0x190 [ 27.157105] tracepoint_probe_register+0x8c/0xc0 [ 27.161837] ? for_each_kernel_tracepoint+0x80/0x80 [ 27.166842] ? blk_add_trace_rq_complete+0x190/0x190 [ 27.171934] ? debugfs_create_file+0x37/0x60 [ 27.176336] blk_register_tracepoints+0x14c/0x2f0 [ 27.181160] do_blk_trace_setup+0x8a1/0xac0 [ 27.185460] __blk_trace_setup+0xa3/0x120 [ 27.189584] ? do_blk_trace_setup+0xac0/0xac0 [ 27.194059] blk_trace_setup+0x43/0x60 [ 27.197928] sg_ioctl+0x232/0x2620 [ 27.201447] ? proc_fail_nth_write+0x7b/0x180 [ 27.205920] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 27.210825] ? sg_write+0x90/0x90 [ 27.214257] ? fsnotify+0x974/0x11b0 [ 27.217947] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 27.222852] ? debug_check_no_obj_freed+0x2c0/0x680 [ 27.227909] ? sg_write+0x90/0x90 [ 27.231347] do_vfs_ioctl+0x75a/0xff0 [ 27.235141] ? ioctl_preallocate+0x1a0/0x1a0 [ 27.239533] ? vfs_write+0x319/0x4d0 [ 27.243237] ? SyS_write+0x14d/0x210 [ 27.246933] ? security_file_ioctl+0x83/0xb0 [ 27.251319] SyS_ioctl+0x7f/0xb0 [ 27.254664] ? do_vfs_ioctl+0xff0/0xff0 [ 27.258619] do_syscall_64+0x1d5/0x640 [ 27.262501] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 27.267675] RIP: 0033:0x7f623b6edcd9 [ 27.271366] RSP: 002b:00007ffff7cc89a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 27.279054] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f623b6edcd9 [ 27.286336] RDX: 0000000020000140 RSI: 00000000c0481273 RDI: 0000000000000003 [ 27.293594] RBP: 00007ffff7cc89b0 R08: 0000000000000002 R09: 00007f623b003034 [ 27.300854] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 27.308111] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 27.321061] ------------[ cut here ]------------ [ 27.325932] WARNING: CPU: 0 PID: 7965 at kernel/trace/blktrace.c:1194 blk_register_tracepoints+0x296/0x2f0 [ 27.335733] Kernel panic - not syncing: panic_on_warn set ... [ 27.335733] [ 27.343114] CPU: 0 PID: 7965 Comm: syz-executor222 Not tainted 4.14.281-syzkaller #0 [ 27.350969] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 27.360298] Call Trace: [ 27.362864] dump_stack+0x1b2/0x281 [ 27.366485] panic+0x1f9/0x42d [ 27.369654] ? add_taint.cold+0x16/0x16 [ 27.373610] ? blk_register_tracepoints+0x296/0x2f0 [ 27.379034] ? blk_register_tracepoints+0x296/0x2f0 [ 27.384214] __warn.cold+0x20/0x44 [ 27.387733] ? ist_end_non_atomic+0x10/0x10 [ 27.392031] ? blk_register_tracepoints+0x296/0x2f0 [ 27.397028] report_bug+0x208/0x250 [ 27.400914] do_error_trap+0x195/0x2d0 [ 27.404790] ? math_error+0x2d0/0x2d0 [ 27.408570] ? lock_downgrade+0x740/0x740 [ 27.412698] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 27.417709] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 27.422531] invalid_op+0x1b/0x40 [ 27.425965] RIP: 0010:blk_register_tracepoints+0x296/0x2f0 [ 27.431572] RSP: 0018:ffff88808f6efb20 EFLAGS: 00010297 [ 27.436908] RAX: ffff8880977a8100 RBX: ffff8880ac6c9330 RCX: fffffbfff17da3a8 [ 27.444150] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000282 [ 27.451393] RBP: ffff8880a91f9300 R08: ffff8880977a8100 R09: dffffc0000000000 [ 27.458639] R10: 0000000000000000 R11: 0000000000000000 R12: 00000000fffffff0 [ 27.465885] R13: ffff8880a91f9330 R14: 0000000000000000 R15: 0000000000000000 [ 27.473150] do_blk_trace_setup+0x8a1/0xac0 [ 27.477459] __blk_trace_setup+0xa3/0x120 [ 27.481579] ? do_blk_trace_setup+0xac0/0xac0 [ 27.486053] blk_trace_setup+0x43/0x60 [ 27.489927] sg_ioctl+0x232/0x2620 [ 27.493445] ? proc_fail_nth_write+0x7b/0x180 [ 27.497914] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 27.502819] ? sg_write+0x90/0x90 [ 27.506258] ? fsnotify+0x974/0x11b0 [ 27.509954] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 27.514858] ? debug_check_no_obj_freed+0x2c0/0x680 [ 27.519848] ? sg_write+0x90/0x90 [ 27.523275] do_vfs_ioctl+0x75a/0xff0 [ 27.527081] ? ioctl_preallocate+0x1a0/0x1a0 [ 27.531472] ? vfs_write+0x319/0x4d0 [ 27.535164] ? SyS_write+0x14d/0x210 [ 27.538858] ? security_file_ioctl+0x83/0xb0 [ 27.543249] SyS_ioctl+0x7f/0xb0 [ 27.546608] ? do_vfs_ioctl+0xff0/0xff0 [ 27.550562] do_syscall_64+0x1d5/0x640 [ 27.554442] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 27.559615] RIP: 0033:0x7f623b6edcd9 [ 27.563317] RSP: 002b:00007ffff7cc89a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 27.571014] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f623b6edcd9 [ 27.578265] RDX: 0000000020000140 RSI: 00000000c0481273 RDI: 0000000000000003 [ 27.585517] RBP: 00007ffff7cc89b0 R08: 0000000000000002 R09: 00007f623b003034 [ 27.592905] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 27.600171] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 27.607840] Kernel Offset: disabled [ 27.611518] Rebooting in 86400 seconds..