INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added 'ci-upstream-kasan-gce-4,10.128.0.20' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 25.382145] ------------[ cut here ]------------ [ 25.382909] WARNING: CPU: 1 PID: 3037 at kernel/tracepoint.c:243 tracepoint_probe_unregister+0x6b3/0x870 [ 25.384644] Kernel panic - not syncing: panic_on_warn set ... [ 25.384644] [ 25.385638] CPU: 1 PID: 3037 Comm: syzkaller690700 Not tainted 4.14.0-rc8+ #167 [ 25.386611] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.387846] Call Trace: [ 25.388209] dump_stack+0x194/0x257 [ 25.388700] ? arch_local_irq_restore+0x53/0x53 [ 25.389333] panic+0x1e4/0x417 [ 25.389768] ? __warn+0x1d9/0x1d9 [ 25.390236] ? show_regs_print_info+0x65/0x65 [ 25.390847] ? tracepoint_probe_unregister+0x6b3/0x870 [ 25.391546] __warn+0x1c4/0x1d9 [ 25.392013] ? tracepoint_probe_unregister+0x6b3/0x870 [ 25.392734] report_bug+0x211/0x2d0 [ 25.393232] fixup_bug+0x40/0x90 [ 25.393688] do_trap+0x260/0x390 [ 25.394150] do_error_trap+0x120/0x390 [ 25.394675] ? depot_save_stack+0x12c/0x490 [ 25.395253] ? do_trap+0x390/0x390 [ 25.395731] ? tracepoint_probe_unregister+0x6b3/0x870 [ 25.396431] ? save_stack+0xa3/0xd0 [ 25.396919] ? save_stack_trace+0x16/0x20 [ 25.397472] ? save_stack+0x43/0xd0 [ 25.397960] ? blk_add_trace_bio_remap+0x5e0/0x5e0 [ 25.398618] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 25.399288] ? blk_add_trace_bio_remap+0x5e0/0x5e0 [ 25.399948] do_invalid_op+0x1b/0x20 [ 25.400446] invalid_op+0x18/0x20 [ 25.400912] RIP: 0010:tracepoint_probe_unregister+0x6b3/0x870 [ 25.401686] RSP: 0000:ffff8801d14f7890 EFLAGS: 00010297 [ 25.403414] RAX: ffff8801d14e2340 RBX: 00000000fffffffe RCX: 0000000000000000 [ 25.410659] RDX: 0000000000000000 RSI: ffffffff85d639e0 RDI: 0000000000000282 [ 25.417898] RBP: ffff8801d14f79a8 R08: 0000000000000001 R09: 1ffff1003a29ee6e [ 25.425137] R10: ffff8801d14f7880 R11: 0000000000000001 R12: ffffffff81748da0 [ 25.432378] R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8801d14f7980 [ 25.439631] ? blk_add_trace_bio_remap+0x5e0/0x5e0 [ 25.444540] ? free_percpu+0x22e/0x830 [ 25.448400] ? for_each_kernel_tracepoint+0xa0/0xa0 [ 25.453388] ? trace_hardirqs_off+0xd/0x10 [ 25.457590] ? quarantine_put+0xeb/0x190 [ 25.461616] ? kfree+0xe4/0x250 [ 25.464865] ? blk_trace_free+0xf9/0x130 [ 25.468893] ? blk_add_trace_bio_remap+0x5e0/0x5e0 [ 25.473790] ? trace_hardirqs_on+0xd/0x10 [ 25.477910] blk_unregister_tracepoints+0x1e/0x160 [ 25.482806] blk_trace_cleanup+0x28/0x30 [ 25.486839] blk_trace_remove+0x55/0x80 [ 25.490782] sg_ioctl+0x5eb/0x2d90 [ 25.494288] ? lock_release+0xa40/0xa40 [ 25.498233] ? sg_new_write.isra.20+0x830/0x830 [ 25.502878] ? is_bpf_text_address+0xa4/0x120 [ 25.507345] ? avc_has_extended_perms+0x7fa/0x12c0 [ 25.512241] ? unwind_get_return_address+0x2/0xa0 [ 25.517065] ? avc_ss_reset+0x110/0x110 [ 25.521009] ? putname+0xee/0x130 [ 25.524428] ? save_stack+0xa3/0xd0 [ 25.528021] ? save_stack_trace+0x16/0x20 [ 25.532130] ? save_stack+0x43/0xd0 [ 25.535721] ? kasan_slab_free+0x71/0xc0 [ 25.539749] ? kmem_cache_free+0x77/0x280 [ 25.543861] ? putname+0xee/0x130 [ 25.547285] ? __lock_is_held+0xb6/0x140 [ 25.551325] ? check_same_owner+0x320/0x320 [ 25.555614] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 25.560347] ? sg_new_write.isra.20+0x830/0x830 [ 25.564982] do_vfs_ioctl+0x1b1/0x1520 [ 25.568839] ? ioctl_preallocate+0x2b0/0x2b0 [ 25.573218] ? selinux_capable+0x40/0x40 [ 25.577248] ? putname+0xf3/0x130 [ 25.580671] ? do_sys_open+0x320/0x6d0 [ 25.584531] ? security_file_ioctl+0x89/0xb0 [ 25.588919] SyS_ioctl+0x8f/0xc0 [ 25.592264] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 25.596983] RIP: 0033:0x444339 [ 25.600145] RSP: 002b:00007fffa8210908 EFLAGS: 00000206 ORIG_RAX: 0000000000000010 [ 25.607830] RAX: ffffffffffffffda RBX: 00000000006d66c0 RCX: 0000000000444339 [ 25.615068] RDX: 00000000205dd000 RSI: 6000020000001276 RDI: 000000000000000f [ 25.622305] RBP: 0000000000000082 R08: 0000000000000000 R09: 0000000000000000 [ 25.629545] R10: 0000000000000000 R11: 0000000000000206 R12: ffffffffffffffff [ 25.636780] R13: 6000020000001276 R14: 0000000000000000 R15: 0000000000000000 [ 25.644520] Dumping ftrace buffer: [ 25.648073] (ftrace buffer empty) [ 25.651750] Kernel Offset: disabled [ 25.655349] Rebooting in 86400 seconds..