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 '10.128.10.13' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 29.264768] ================================================================== [ 29.272149] BUG: KMSAN: uninit-value in inet6_rtm_delroute+0x304/0x720 [ 29.278789] CPU: 1 PID: 3566 Comm: syzkaller963443 Not tainted 4.16.0+ #82 [ 29.285772] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.295101] Call Trace: [ 29.297673] dump_stack+0x185/0x1d0 [ 29.301276] ? inet6_rtm_delroute+0x304/0x720 [ 29.305748] kmsan_report+0x142/0x240 [ 29.309523] __msan_warning_32+0x6c/0xb0 [ 29.313562] inet6_rtm_delroute+0x304/0x720 [ 29.317865] ? inet6_rtm_newroute+0x26a0/0x26a0 [ 29.322512] rtnetlink_rcv_msg+0xa32/0x1560 [ 29.326809] ? SyS_sendmsg+0x54/0x80 [ 29.330498] ? netlink_sendmsg+0x9a6/0x1310 [ 29.334794] ? ___sys_sendmsg+0xec0/0x1310 [ 29.339003] ? SYSC_sendmsg+0x2a3/0x3d0 [ 29.342959] ? SyS_sendmsg+0x54/0x80 [ 29.346646] ? do_syscall_64+0x309/0x430 [ 29.350684] ? entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 29.356031] ? __msan_poison_alloca+0x15c/0x1d0 [ 29.360682] ? _raw_spin_unlock_bh+0x57/0x70 [ 29.365070] ? __local_bh_enable_ip+0x3b/0x140 [ 29.369624] ? _raw_spin_unlock_bh+0x57/0x70 [ 29.374011] ? kmsan_set_origin_inline+0x6b/0x120 [ 29.378927] ? kmsan_set_origin+0x9e/0x160 [ 29.383141] netlink_rcv_skb+0x355/0x5f0 [ 29.387181] ? rtnetlink_bind+0x120/0x120 [ 29.391304] rtnetlink_rcv+0x50/0x60 [ 29.394993] netlink_unicast+0x1672/0x1750 [ 29.399209] ? rtnetlink_net_exit+0xa0/0xa0 [ 29.403508] netlink_sendmsg+0x1048/0x1310 [ 29.407722] ? netlink_getsockopt+0xc80/0xc80 [ 29.412194] ___sys_sendmsg+0xec0/0x1310 [ 29.416231] ? do_huge_pmd_anonymous_page+0x19d5/0x2520 [ 29.421581] ? __fdget+0x4e/0x60 [ 29.424926] SYSC_sendmsg+0x2a3/0x3d0 [ 29.428705] SyS_sendmsg+0x54/0x80 [ 29.432220] do_syscall_64+0x309/0x430 [ 29.436083] ? ___sys_sendmsg+0x1310/0x1310 [ 29.440379] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 29.445541] RIP: 0033:0x43fde9 [ 29.448706] RSP: 002b:00007ffee989e6e8 EFLAGS: 00000213 ORIG_RAX: 000000000000002e [ 29.456387] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fde9 [ 29.463632] RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000003 [ 29.470873] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 29.478118] R10: 00000000004002c8 R11: 0000000000000213 R12: 0000000000401710 [ 29.485362] R13: 00000000004017a0 R14: 0000000000000000 R15: 0000000000000000 [ 29.492609] [ 29.494208] Uninit was created at: [ 29.497733] kmsan_internal_poison_shadow+0xb8/0x1b0 [ 29.502809] kmsan_kmalloc+0x94/0x100 [ 29.506582] kmsan_slab_alloc+0x11/0x20 [ 29.510529] __kmalloc_node_track_caller+0xaed/0x11c0 [ 29.515692] __alloc_skb+0x2cf/0x9f0 [ 29.519380] netlink_sendmsg+0x9a6/0x1310 [ 29.523506] ___sys_sendmsg+0xec0/0x1310 [ 29.527542] SYSC_sendmsg+0x2a3/0x3d0 [ 29.531316] SyS_sendmsg+0x54/0x80 [ 29.534834] do_syscall_64+0x309/0x430 [ 29.538698] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 29.543858] ================================================================== [ 29.551184] Disabling lock debugging due to kernel taint [ 29.556604] Kernel panic - not syncing: panic_on_warn set ... [ 29.556604] [ 29.563946] CPU: 1 PID: 3566 Comm: syzkaller963443 Tainted: G B 4.16.0+ #82 [ 29.572232] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.581561] Call Trace: [ 29.584133] dump_stack+0x185/0x1d0 [ 29.587743] panic+0x39d/0x940 [ 29.590924] ? inet6_rtm_delroute+0x304/0x720 [ 29.595403] kmsan_report+0x238/0x240 [ 29.599184] __msan_warning_32+0x6c/0xb0 [ 29.603233] inet6_rtm_delroute+0x304/0x720 [ 29.607550] ? inet6_rtm_newroute+0x26a0/0x26a0 [ 29.612205] rtnetlink_rcv_msg+0xa32/0x1560 [ 29.616508] ? SyS_sendmsg+0x54/0x80 [ 29.620196] ? netlink_sendmsg+0x9a6/0x1310 [ 29.624491] ? ___sys_sendmsg+0xec0/0x1310 [ 29.628699] ? SYSC_sendmsg+0x2a3/0x3d0 [ 29.632649] ? SyS_sendmsg+0x54/0x80 [ 29.636336] ? do_syscall_64+0x309/0x430 [ 29.640371] ? entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 29.645709] ? __msan_poison_alloca+0x15c/0x1d0 [ 29.650352] ? _raw_spin_unlock_bh+0x57/0x70 [ 29.654738] ? __local_bh_enable_ip+0x3b/0x140 [ 29.659294] ? _raw_spin_unlock_bh+0x57/0x70 [ 29.663680] ? kmsan_set_origin_inline+0x6b/0x120 [ 29.668501] ? kmsan_set_origin+0x9e/0x160 [ 29.672712] netlink_rcv_skb+0x355/0x5f0 [ 29.676749] ? rtnetlink_bind+0x120/0x120 [ 29.680876] rtnetlink_rcv+0x50/0x60 [ 29.684566] netlink_unicast+0x1672/0x1750 [ 29.688779] ? rtnetlink_net_exit+0xa0/0xa0 [ 29.693080] netlink_sendmsg+0x1048/0x1310 [ 29.697296] ? netlink_getsockopt+0xc80/0xc80 [ 29.701767] ___sys_sendmsg+0xec0/0x1310 [ 29.705802] ? do_huge_pmd_anonymous_page+0x19d5/0x2520 [ 29.711146] ? __fdget+0x4e/0x60 [ 29.714493] SYSC_sendmsg+0x2a3/0x3d0 [ 29.718273] SyS_sendmsg+0x54/0x80 [ 29.721788] do_syscall_64+0x309/0x430 [ 29.725651] ? ___sys_sendmsg+0x1310/0x1310 [ 29.729952] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 29.735115] RIP: 0033:0x43fde9 [ 29.738277] RSP: 002b:00007ffee989e6e8 EFLAGS: 00000213 ORIG_RAX: 000000000000002e [ 29.745958] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fde9 [ 29.753200] RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000003 [ 29.760444] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 29.767686] R10: 00000000004002c8 R11: 0000000000000213 R12: 0000000000401710 [ 29.774930] R13: 00000000004017a0 R14: 0000000000000000 R15: 0000000000000000 [ 29.782666] Dumping ftrace buffer: [ 29.786183] (ftrace buffer empty) [ 29.789864] Kernel Offset: disabled [ 29.793463] Rebooting in 86400 seconds..