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 '10.128.10.1' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 29.517682] ================================================================== [ 29.525063] BUG: KMSAN: uninit-value in fib_create_info+0x554/0x8d20 [ 29.531531] CPU: 1 PID: 3561 Comm: syzkaller095785 Not tainted 4.16.0+ #82 [ 29.538514] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.547839] Call Trace: [ 29.550401] dump_stack+0x185/0x1d0 [ 29.554006] ? fib_create_info+0x554/0x8d20 [ 29.558311] kmsan_report+0x142/0x240 [ 29.562084] __msan_warning_32+0x6c/0xb0 [ 29.566131] fib_create_info+0x554/0x8d20 [ 29.570259] ? save_stack_trace+0xa5/0xf0 [ 29.574379] ? __msan_metadata_ptr_for_store_8+0x13/0x20 [ 29.579804] ? kmsan_set_origin_inline+0x6b/0x120 [ 29.584620] ? __msan_poison_alloca+0x15c/0x1d0 [ 29.589263] ? inet_rtm_newroute+0x210/0x340 [ 29.593649] ? fib_table_insert+0xbc/0x2820 [ 29.597946] fib_table_insert+0x3b6/0x2820 [ 29.602158] ? __msan_metadata_ptr_for_load_2+0x10/0x20 [ 29.607497] ? fib_new_table+0x247/0x670 [ 29.611537] inet_rtm_newroute+0x210/0x340 [ 29.615748] ? fib_del_ifaddr+0x35c0/0x35c0 [ 29.620052] rtnetlink_rcv_msg+0xa32/0x1560 [ 29.624355] ? SyS_sendmsg+0x54/0x80 [ 29.628055] ? netlink_sendmsg+0x9a6/0x1310 [ 29.632352] ? ___sys_sendmsg+0xec0/0x1310 [ 29.636559] ? SYSC_sendmsg+0x2a3/0x3d0 [ 29.640506] ? SyS_sendmsg+0x54/0x80 [ 29.644195] ? do_syscall_64+0x309/0x430 [ 29.648231] ? entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 29.653566] ? __msan_poison_alloca+0x15c/0x1d0 [ 29.658207] ? _raw_spin_unlock_bh+0x57/0x70 [ 29.662590] ? __local_bh_enable_ip+0x3b/0x140 [ 29.667144] ? _raw_spin_unlock_bh+0x57/0x70 [ 29.671526] ? kmsan_set_origin_inline+0x6b/0x120 [ 29.676344] ? kmsan_set_origin+0x9e/0x160 [ 29.680557] netlink_rcv_skb+0x355/0x5f0 [ 29.684593] ? rtnetlink_bind+0x120/0x120 [ 29.688717] rtnetlink_rcv+0x50/0x60 [ 29.692404] netlink_unicast+0x1672/0x1750 [ 29.696617] ? rtnetlink_net_exit+0xa0/0xa0 [ 29.700922] netlink_sendmsg+0x1048/0x1310 [ 29.705135] ? netlink_getsockopt+0xc80/0xc80 [ 29.709604] ___sys_sendmsg+0xec0/0x1310 [ 29.713642] ? do_huge_pmd_anonymous_page+0x19d5/0x2520 [ 29.718980] ? __fdget+0x4e/0x60 [ 29.722331] SYSC_sendmsg+0x2a3/0x3d0 [ 29.726114] SyS_sendmsg+0x54/0x80 [ 29.729629] do_syscall_64+0x309/0x430 [ 29.733493] ? ___sys_sendmsg+0x1310/0x1310 [ 29.737790] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 29.742953] RIP: 0033:0x43fde9 [ 29.746116] RSP: 002b:00007fff4519f778 EFLAGS: 00000213 ORIG_RAX: 000000000000002e [ 29.753796] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fde9 [ 29.761239] RDX: 0000000000000000 RSI: 000000002000bfc8 RDI: 0000000000000003 [ 29.768482] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 29.775724] R10: 00000000004002c8 R11: 0000000000000213 R12: 0000000000401710 [ 29.782968] R13: 00000000004017a0 R14: 0000000000000000 R15: 0000000000000000 [ 29.790211] [ 29.791809] Uninit was created at: [ 29.795324] kmsan_internal_poison_shadow+0xb8/0x1b0 [ 29.800401] kmsan_kmalloc+0x94/0x100 [ 29.804176] kmsan_slab_alloc+0x11/0x20 [ 29.808127] __kmalloc_node_track_caller+0xaed/0x11c0 [ 29.813287] __alloc_skb+0x2cf/0x9f0 [ 29.816975] netlink_sendmsg+0x9a6/0x1310 [ 29.821099] ___sys_sendmsg+0xec0/0x1310 [ 29.825134] SYSC_sendmsg+0x2a3/0x3d0 [ 29.828918] SyS_sendmsg+0x54/0x80 [ 29.832436] do_syscall_64+0x309/0x430 [ 29.836300] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 29.841457] ================================================================== [ 29.848782] Disabling lock debugging due to kernel taint [ 29.854205] Kernel panic - not syncing: panic_on_warn set ... [ 29.854205] [ 29.861541] CPU: 1 PID: 3561 Comm: syzkaller095785 Tainted: G B 4.16.0+ #82 [ 29.869824] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.879150] Call Trace: [ 29.881712] dump_stack+0x185/0x1d0 [ 29.885313] panic+0x39d/0x940 [ 29.888491] ? fib_create_info+0x554/0x8d20 [ 29.892788] kmsan_report+0x238/0x240 [ 29.896563] __msan_warning_32+0x6c/0xb0 [ 29.900601] fib_create_info+0x554/0x8d20 [ 29.904732] ? save_stack_trace+0xa5/0xf0 [ 29.908856] ? __msan_metadata_ptr_for_store_8+0x13/0x20 [ 29.914282] ? kmsan_set_origin_inline+0x6b/0x120 [ 29.919101] ? __msan_poison_alloca+0x15c/0x1d0 [ 29.923770] ? inet_rtm_newroute+0x210/0x340 [ 29.928170] ? fib_table_insert+0xbc/0x2820 [ 29.932474] fib_table_insert+0x3b6/0x2820 [ 29.936690] ? __msan_metadata_ptr_for_load_2+0x10/0x20 [ 29.942045] ? fib_new_table+0x247/0x670 [ 29.946088] inet_rtm_newroute+0x210/0x340 [ 29.950324] ? fib_del_ifaddr+0x35c0/0x35c0 [ 29.954622] rtnetlink_rcv_msg+0xa32/0x1560 [ 29.958921] ? SyS_sendmsg+0x54/0x80 [ 29.962612] ? netlink_sendmsg+0x9a6/0x1310 [ 29.966907] ? ___sys_sendmsg+0xec0/0x1310 [ 29.971114] ? SYSC_sendmsg+0x2a3/0x3d0 [ 29.975062] ? SyS_sendmsg+0x54/0x80 [ 29.978748] ? do_syscall_64+0x309/0x430 [ 29.982785] ? entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 29.988120] ? __msan_poison_alloca+0x15c/0x1d0 [ 29.992769] ? _raw_spin_unlock_bh+0x57/0x70 [ 29.997155] ? __local_bh_enable_ip+0x3b/0x140 [ 30.001719] ? _raw_spin_unlock_bh+0x57/0x70 [ 30.006124] ? kmsan_set_origin_inline+0x6b/0x120 [ 30.010956] ? kmsan_set_origin+0x9e/0x160 [ 30.015169] netlink_rcv_skb+0x355/0x5f0 [ 30.019209] ? rtnetlink_bind+0x120/0x120 [ 30.023332] rtnetlink_rcv+0x50/0x60 [ 30.027030] netlink_unicast+0x1672/0x1750 [ 30.031257] ? rtnetlink_net_exit+0xa0/0xa0 [ 30.035555] netlink_sendmsg+0x1048/0x1310 [ 30.039768] ? netlink_getsockopt+0xc80/0xc80 [ 30.044237] ___sys_sendmsg+0xec0/0x1310 [ 30.048272] ? do_huge_pmd_anonymous_page+0x19d5/0x2520 [ 30.053614] ? __fdget+0x4e/0x60 [ 30.056980] SYSC_sendmsg+0x2a3/0x3d0 [ 30.060759] SyS_sendmsg+0x54/0x80 [ 30.064276] do_syscall_64+0x309/0x430 [ 30.068138] ? ___sys_sendmsg+0x1310/0x1310 [ 30.072434] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 30.077598] RIP: 0033:0x43fde9 [ 30.080762] RSP: 002b:00007fff4519f778 EFLAGS: 00000213 ORIG_RAX: 000000000000002e [ 30.088444] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fde9 [ 30.095687] RDX: 0000000000000000 RSI: 000000002000bfc8 RDI: 0000000000000003 [ 30.102929] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 30.110176] R10: 00000000004002c8 R11: 0000000000000213 R12: 0000000000401710 [ 30.117420] R13: 00000000004017a0 R14: 0000000000000000 R15: 0000000000000000 [ 30.125052] Dumping ftrace buffer: [ 30.128567] (ftrace buffer empty) [ 30.132247] Kernel Offset: disabled [ 30.135844] Rebooting in 86400 seconds..