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 '10.128.0.14' (ECDSA) to the list of known hosts. net.ipv6.conf.syz_tun.accept_dad = 0 net.ipv6.conf.syz_tun.router_solicitations = 0 RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported syzkaller login: [ 30.240087] ip (3602) used greatest stack depth: 54312 bytes left [ 30.366533] bridge0: port 1(bridge_slave_0) entered blocking state [ 30.372995] bridge0: port 1(bridge_slave_0) entered disabled state [ 30.380390] device bridge_slave_0 entered promiscuous mode [ 30.401524] bridge0: port 2(bridge_slave_1) entered blocking state [ 30.408141] bridge0: port 2(bridge_slave_1) entered disabled state [ 30.415543] device bridge_slave_1 entered promiscuous mode [ 30.435985] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 30.457236] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready Error: argument "bond0" is wrong: Device does not exist Error: argument "bond0" is wrong: Device does not exist [ 30.564089] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 30.585362] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 30.612941] ip (3643) used greatest stack depth: 54200 bytes left Error: argument "team0" is wrong: Device does not exist Error: argument "team0" is wrong: Device does not exist [ 30.697799] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 30.719528] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 30.742202] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 30.766689] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready RTNETLINK answers: Operation not supported Cannot find device "vcan0" [ 30.948856] bridge0: port 2(bridge_slave_1) entered blocking state [ 30.955309] bridge0: port 2(bridge_slave_1) entered forwarding state [ 30.962208] bridge0: port 1(bridge_slave_0) entered blocking state [ 30.968628] bridge0: port 1(bridge_slave_0) entered forwarding state Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "tunl0" Cannot find device "tunl0" Cannot find device "tunl0" Cannot find device "tunl0" Cannot find device "gre0" Cannot find device "gre0" Cannot find device "gre0" Cannot find device "gre0" Cannot find device "gretap0" Cannot find device "gretap0" Cannot find device "gretap0" Cannot find device "gretap0" Cannot find device "ip_vti0" Cannot find device "ip_vti0" Cannot find device "ip_vti0" Cannot find device "ip_vti0" Cannot find device "ip6_vti0" Cannot find device "ip6_vti0" Cannot find device "ip6_vti0" Cannot find device "ip6_vti0" Cannot find device "ip6tnl0" Cannot find device "ip6tnl0" Cannot find device "ip6tnl0" Cannot find device "ip6tnl0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "erspan0" Cannot find device "erspan0" Cannot find device "erspan0" Cannot find device "erspan0" Cannot find device "bond0" Cannot find device "bond0" Cannot find device "bond0" Cannot find device "bond0" [ 32.232485] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready Cannot find device "team0" [ 32.296010] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 32.302316] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 32.310599] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready Cannot find device "team0" Cannot find device "team0" Cannot find device "team0" [ 32.768327] ================================================================== [ 32.775721] BUG: KMSAN: uninit-value in is_valid_bugaddr+0x17f/0x1a0 [ 32.782200] CPU: 1 PID: 3581 Comm: syzkaller059654 Not tainted 4.16.0+ #83 [ 32.789192] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.798525] Call Trace: [ 32.801116] dump_stack+0x185/0x1d0 [ 32.804728] ? is_valid_bugaddr+0x17f/0x1a0 [ 32.809037] kmsan_report+0x142/0x240 [ 32.812831] __msan_warning_32+0x6c/0xb0 [ 32.816879] ? kmsan_copy_to_user+0x141/0x160 [ 32.821354] ? kmsan_copy_to_user+0x141/0x160 [ 32.825830] is_valid_bugaddr+0x17f/0x1a0 [ 32.829959] ? report_bug+0x4b/0x880 [ 32.833649] ? kmsan_copy_to_user+0x141/0x160 [ 32.838122] report_bug+0x6f/0x880 [ 32.841638] ? __msan_poison_alloca+0x15c/0x1d0 [ 32.846282] ? do_invalid_op+0x46/0x50 [ 32.850159] ? kmsan_copy_to_user+0x141/0x160 [ 32.854633] ? do_error_trap+0xac/0x600 [ 32.858585] ? do_invalid_op+0x46/0x50 [ 32.862448] ? kmsan_copy_to_user+0x141/0x160 [ 32.866939] do_error_trap+0x1aa/0x600 [ 32.870805] ? kmsan_set_origin_inline+0x6b/0x120 [ 32.875628] ? __kmalloc+0x20c/0x350 [ 32.879325] do_invalid_op+0x46/0x50 [ 32.883031] invalid_op+0x1b/0x40 [ 32.886478] RIP: 0010:kmsan_copy_to_user+0x141/0x160 [ 32.891555] RSP: 0018:ffff8801b421fb08 EFLAGS: 00010202 [ 32.896895] RAX: ffff8801d8298000 RBX: ffff8801dc76c8e8 RCX: 0000000000000004 [ 32.904144] RDX: 00007ffffffff000 RSI: ffff8801dc76c8e8 RDI: fffffffffffff123 [ 32.911392] RBP: ffff8801b421fb50 R08: 0000000001080020 R09: ffff8801dc76d8e8 [ 32.918653] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000004 [ 32.925907] R13: fffffffffffff123 R14: 0000000000000000 R15: 0000000000000000 [ 32.933172] br_ioctl_deviceless_stub+0xb8e/0xc20 [ 32.938021] ? br_handle_frame+0x1770/0x1770 [ 32.942431] ? br_handle_frame+0x1770/0x1770 [ 32.946831] sock_ioctl+0x706/0xbf0 [ 32.950438] ? SYSC_ioctl+0x1d2/0x260 [ 32.954228] ? sock_poll+0x370/0x370 [ 32.957931] do_vfs_ioctl+0xaf0/0x2440 [ 32.961799] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 32.967144] ? __fget_light+0x1f5/0x710 [ 32.971112] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 32.976465] SYSC_ioctl+0x1d2/0x260 [ 32.980086] SyS_ioctl+0x54/0x80 [ 32.983433] do_syscall_64+0x309/0x430 [ 32.987309] ? ioctl_file_clone+0x4f0/0x4f0 [ 32.991615] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 32.996800] RIP: 0033:0x441869 [ 32.999968] RSP: 002b:00007ffc41f7cac8 EFLAGS: 00000213 ORIG_RAX: 0000000000000010 [ 33.007665] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441869 [ 33.014918] RDX: 0000000020000000 RSI: 0000000000008941 RDI: 0000000000000003 [ 33.022522] RBP: 00000000006cd018 R08: 0000000000000000 R09: 0000000000000000 [ 33.029786] R10: 0000000000000020 R11: 0000000000000213 R12: 0000000000402560 [ 33.037044] R13: 00000000004025f0 R14: 0000000000000000 R15: 0000000000000000 [ 33.044300] [ 33.045907] Local variable description: ----flags.i.i.i.i@enter_lazy_tlb [ 33.052718] Variable was created at: [ 33.056418] enter_lazy_tlb+0x30/0x120 [ 33.060282] __schedule+0x5e6/0x730 [ 33.063880] ================================================================== [ 33.071212] Disabling lock debugging due to kernel taint [ 33.076638] Kernel panic - not syncing: panic_on_warn set ... [ 33.076638] [ 33.083982] CPU: 1 PID: 3581 Comm: syzkaller059654 Tainted: G B 4.16.0+ #83 [ 33.092279] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.101612] Call Trace: [ 33.104186] dump_stack+0x185/0x1d0 [ 33.107795] panic+0x39d/0x940 [ 33.110975] ? is_valid_bugaddr+0x17f/0x1a0 [ 33.115274] kmsan_report+0x238/0x240 [ 33.119058] __msan_warning_32+0x6c/0xb0 [ 33.123102] ? kmsan_copy_to_user+0x141/0x160 [ 33.127578] ? kmsan_copy_to_user+0x141/0x160 [ 33.132069] is_valid_bugaddr+0x17f/0x1a0 [ 33.136209] ? report_bug+0x4b/0x880 [ 33.139910] ? kmsan_copy_to_user+0x141/0x160 [ 33.144385] report_bug+0x6f/0x880 [ 33.147904] ? __msan_poison_alloca+0x15c/0x1d0 [ 33.152554] ? do_invalid_op+0x46/0x50 [ 33.156428] ? kmsan_copy_to_user+0x141/0x160 [ 33.161011] ? do_error_trap+0xac/0x600 [ 33.164975] ? do_invalid_op+0x46/0x50 [ 33.168841] ? kmsan_copy_to_user+0x141/0x160 [ 33.173329] do_error_trap+0x1aa/0x600 [ 33.177295] ? kmsan_set_origin_inline+0x6b/0x120 [ 33.182118] ? __kmalloc+0x20c/0x350 [ 33.185824] do_invalid_op+0x46/0x50 [ 33.189527] invalid_op+0x1b/0x40 [ 33.192966] RIP: 0010:kmsan_copy_to_user+0x141/0x160 [ 33.198047] RSP: 0018:ffff8801b421fb08 EFLAGS: 00010202 [ 33.203403] RAX: ffff8801d8298000 RBX: ffff8801dc76c8e8 RCX: 0000000000000004 [ 33.210663] RDX: 00007ffffffff000 RSI: ffff8801dc76c8e8 RDI: fffffffffffff123 [ 33.217911] RBP: ffff8801b421fb50 R08: 0000000001080020 R09: ffff8801dc76d8e8 [ 33.225158] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000004 [ 33.232411] R13: fffffffffffff123 R14: 0000000000000000 R15: 0000000000000000 [ 33.239686] br_ioctl_deviceless_stub+0xb8e/0xc20 [ 33.244511] ? br_handle_frame+0x1770/0x1770 [ 33.248907] ? br_handle_frame+0x1770/0x1770 [ 33.253294] sock_ioctl+0x706/0xbf0 [ 33.256898] ? SYSC_ioctl+0x1d2/0x260 [ 33.260685] ? sock_poll+0x370/0x370 [ 33.264387] do_vfs_ioctl+0xaf0/0x2440 [ 33.268264] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 33.273636] ? __fget_light+0x1f5/0x710 [ 33.277603] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 33.282948] SYSC_ioctl+0x1d2/0x260 [ 33.286555] SyS_ioctl+0x54/0x80 [ 33.289899] do_syscall_64+0x309/0x430 [ 33.293764] ? ioctl_file_clone+0x4f0/0x4f0 [ 33.298069] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 33.303235] RIP: 0033:0x441869 [ 33.306400] RSP: 002b:00007ffc41f7cac8 EFLAGS: 00000213 ORIG_RAX: 0000000000000010 [ 33.314083] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441869 [ 33.321328] RDX: 0000000020000000 RSI: 0000000000008941 RDI: 0000000000000003 [ 33.328588] RBP: 00000000006cd018 R08: 0000000000000000 R09: 0000000000000000 [ 33.335835] R10: 0000000000000020 R11: 0000000000000213 R12: 0000000000402560 [ 33.343085] R13: 00000000004025f0 R14: 0000000000000000 R15: 0000000000000000 [ 33.350862] Dumping ftrace buffer: [ 33.354380] (ftrace buffer empty) [ 33.358065] Kernel Offset: disabled [ 33.361667] Rebooting in 86400 seconds..