[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [ 13.418709] mcstransd (3566) used greatest stack depth: 17120 bytes left Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 19.420780] audit: type=1400 audit(1516794165.596:6): avc: denied { map } for pid=3652 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.41' (ECDSA) to the list of known hosts. [ 30.107610] audit: type=1400 audit(1516794176.283:7): avc: denied { map } for pid=3667 comm="syzkaller070365" path="/root/syzkaller070365342" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz0.router_solicitations = 0 RTNETLINK answers: Operation not supported RTNETLINK answers: No buffer space available RTNETLINK answers: Operation not supported [ 30.491303] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument executing program executing program [ 30.830754] capability: warning: `syzkaller070365' uses deprecated v2 capabilities in a way that may be insecure 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 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 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 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 executing program executing program executing program executing program [ 43.948420] WARNING: CPU: 0 PID: 5568 at drivers/vhost/vhost.c:646 vhost_dev_cleanup+0x1074/0x1690 [ 43.957571] Kernel panic - not syncing: panic_on_warn set ... [ 43.957571] [ 43.964913] CPU: 0 PID: 5568 Comm: syzkaller070365 Not tainted 4.15.0-rc9+ #187 [ 43.972333] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.981661] Call Trace: [ 43.984231] dump_stack+0x194/0x257 [ 43.987838] ? arch_local_irq_restore+0x53/0x53 [ 43.992497] ? vsnprintf+0x1ed/0x1900 [ 43.996278] panic+0x1e4/0x41c [ 43.999446] ? refcount_error_report+0x214/0x214 [ 44.004189] ? show_regs_print_info+0x18/0x18 [ 44.008664] ? __warn+0x1c1/0x200 [ 44.012109] ? vhost_dev_cleanup+0x1074/0x1690 [ 44.016663] __warn+0x1dc/0x200 [ 44.019915] ? vhost_dev_cleanup+0x1074/0x1690 [ 44.024473] report_bug+0x211/0x2d0 [ 44.028084] fixup_bug.part.11+0x37/0x80 [ 44.032119] do_error_trap+0x2d7/0x3e0 [ 44.035979] ? do_raw_spin_trylock+0x190/0x190 [ 44.040537] ? math_error+0x400/0x400 [ 44.044311] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 44.049301] ? trace_hardirqs_on+0xd/0x10 [ 44.053429] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 44.058257] do_invalid_op+0x1b/0x20 [ 44.061957] invalid_op+0x22/0x40 [ 44.065383] RIP: 0010:vhost_dev_cleanup+0x1074/0x1690 [ 44.070542] RSP: 0018:ffff8801d93af160 EFLAGS: 00010293 [ 44.075883] RAX: ffff8801d9238600 RBX: ffff8801b0ec6ac0 RCX: ffffffff84132694 [ 44.083140] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8801b0ec6b68 [ 44.090397] RBP: ffff8801d93af2a0 R08: 0000000000000000 R09: 0000000000000000 [ 44.097643] R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff1003b275e37 [ 44.104896] R13: ffff8801b0ec6d58 R14: ffff8801b0ec6b80 R15: ffff8801b0ec6bd0 [ 44.112167] ? vhost_dev_cleanup+0x1074/0x1690 [ 44.116728] ? trace_hardirqs_on+0xd/0x10 [ 44.120866] ? vhost_dev_ioctl+0x1140/0x1140 [ 44.125262] ? vhost_poll_flush+0x3f/0x60 [ 44.129394] ? vhost_net_flush+0x209/0x2a0 [ 44.134135] ? vhost_net_ubuf_put_and_wait+0x2b0/0x2b0 [ 44.139387] ? vhost_dev_stop+0x1fd/0x2a0 [ 44.143527] ? mutex_unlock+0xd/0x10 [ 44.147214] ? vhost_net_compat_ioctl+0x30/0x30 [ 44.151875] vhost_net_release+0x78/0x190 [ 44.156004] __fput+0x327/0x7e0 [ 44.159265] ? fput+0x140/0x140 [ 44.162525] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 44.168398] ? _raw_spin_unlock_irq+0x27/0x70 [ 44.172876] ____fput+0x15/0x20 [ 44.176134] task_work_run+0x199/0x270 [ 44.180003] ? task_work_cancel+0x210/0x210 [ 44.184311] ? _raw_spin_unlock+0x22/0x30 [ 44.188433] ? switch_task_namespaces+0x87/0xc0 [ 44.193081] do_exit+0x9bb/0x1ad0 [ 44.196510] ? find_held_lock+0x35/0x1d0 [ 44.200545] ? mm_update_next_owner+0x930/0x930 [ 44.205198] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 44.210362] ? lock_downgrade+0x980/0x980 [ 44.214488] ? __unqueue_futex+0x1c0/0x290 [ 44.218692] ? lock_release+0xa40/0xa40 [ 44.222641] ? fault_in_user_writeable+0x90/0x90 [ 44.227372] ? do_raw_spin_trylock+0x190/0x190 [ 44.231924] ? futex_wake+0x680/0x680 [ 44.235715] ? drop_futex_key_refs.isra.12+0x63/0xb0 [ 44.240791] ? futex_wait+0x6a9/0x9a0 [ 44.244574] ? check_noncircular+0x20/0x20 [ 44.248788] ? hash_futex+0x15/0x210 [ 44.252475] ? drop_futex_key_refs.isra.12+0x63/0xb0 [ 44.257551] ? futex_wake+0x2ca/0x680 [ 44.261334] ? find_held_lock+0x35/0x1d0 [ 44.265463] ? get_signal+0x7ae/0x16c0 [ 44.269324] ? lock_downgrade+0x980/0x980 [ 44.273470] do_group_exit+0x149/0x400 [ 44.277345] ? do_raw_spin_trylock+0x190/0x190 [ 44.281900] ? SyS_exit+0x30/0x30 [ 44.285327] ? _raw_spin_unlock_irq+0x27/0x70 [ 44.289798] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 44.294794] get_signal+0x73f/0x16c0 [ 44.298492] ? ptrace_notify+0x130/0x130 [ 44.302530] ? lock_release+0xa40/0xa40 [ 44.306486] ? mutex_unlock+0xd/0x10 [ 44.310173] ? vhost_net_ioctl+0x2af/0x1910 [ 44.314482] do_signal+0x90/0x1eb0 [ 44.317997] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 44.323864] ? rcu_note_context_switch+0x710/0x710 [ 44.328768] ? setup_sigcontext+0x7d0/0x7d0 [ 44.333064] ? __might_sleep+0x95/0x190 [ 44.337016] ? _cond_resched+0x14/0x30 [ 44.340883] ? selinux_file_ioctl+0x444/0x690 [ 44.345348] ? __fget_light+0x297/0x380 [ 44.349309] ? selinux_capable+0x40/0x40 [ 44.353346] ? handle_mm_fault+0x410/0x8d0 [ 44.357552] ? down_read_trylock+0xdb/0x170 [ 44.361848] ? __do_page_fault+0x32d/0xc90 [ 44.366061] ? exit_to_usermode_loop+0x8c/0x310 [ 44.370716] exit_to_usermode_loop+0x214/0x310 [ 44.375275] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 44.380787] ? compat_SyS_ioctl+0x77/0x2a30 [ 44.385081] ? do_fast_syscall_32+0x156/0xf9d [ 44.389554] do_fast_syscall_32+0xbfd/0xf9d [ 44.393858] ? do_int80_syscall_32+0x9d0/0x9d0 [ 44.398421] ? syscall_return_slowpath+0x2ad/0x550 [ 44.403323] ? prepare_exit_to_usermode+0x340/0x340 [ 44.408315] ? sysret32_from_system_call+0x5/0x3b [ 44.413147] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 44.418390] entry_SYSENTER_compat+0x54/0x63 [ 44.422786] RIP: 0023:0xf7f12c79 [ 44.426134] RSP: 002b:00000000f7f0e12c EFLAGS: 00000292 ORIG_RAX: 00000000000000f0 [ 44.433815] RAX: fffffffffffffe00 RBX: 00000000080fe004 RCX: 0000000000000000 [ 44.441061] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000080fe004 [ 44.448303] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 [ 44.455550] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 44.462804] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 44.470632] Dumping ftrace buffer: [ 44.474227] (ftrace buffer empty) [ 44.477917] Kernel Offset: disabled [ 44.481522] Rebooting in 86400 seconds..