INIT: Entering runlevel: 2
[[36minfo[39;49m] Using makefile-style concurrent boot in runlevel 2.
[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
Debian GNU/Linux 7 syzkaller ttyS0
Warning: Permanently added '10.128.0.9' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [ 31.506446] ==================================================================
[ 31.513837] BUG: KMSAN: uninit-value in csum_partial+0x78e/0x850
[ 31.519961] CPU: 0 PID: 3580 Comm: syzkaller269536 Not tainted 4.16.0+ #83
[ 31.526960] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 31.536292] Call Trace:
[ 31.538852]
[ 31.540982] dump_stack+0x185/0x1d0
[ 31.544588] ? csum_partial+0x78e/0x850
[ 31.548539] kmsan_report+0x142/0x240
[ 31.552316] __msan_warning_32+0x6c/0xb0
[ 31.556355] csum_partial+0x78e/0x850
[ 31.560138] csum_partial_ext+0x89/0xa0
[ 31.564089] __skb_checksum+0x6d4/0x1010
[ 31.568130] ? skb_checksum+0x120/0x120
[ 31.572088] skb_checksum+0xec/0x120
[ 31.575777] ? skb_checksum+0x120/0x120
[ 31.579728] ? csum_partial_ext+0xa0/0xa0
[ 31.583856] __skb_checksum_complete+0x90/0x400
[ 31.588504] __udp4_lib_rcv+0x3156/0x4740
[ 31.592638] udp_rcv+0x5c/0x70
[ 31.595806] ? udp_v4_early_demux+0x1cd0/0x1cd0
[ 31.600452] ip_local_deliver_finish+0x6ed/0xd40
[ 31.605220] ip_local_deliver+0x43c/0x4e0
[ 31.609344] ? ip_local_deliver+0x4e0/0x4e0
[ 31.613644] ? ip_call_ra_chain+0x7b0/0x7b0
[ 31.617950] ip_rcv_finish+0x1253/0x16d0
[ 31.621991] ip_rcv+0x119d/0x16f0
[ 31.625427] ? ip_rcv+0x16f0/0x16f0
[ 31.629052] __netif_receive_skb_core+0x47cf/0x4a80
[ 31.634064] ? kmsan_internal_memset_shadow_inline+0xd0/0xd0
[ 31.639841] ? ip_local_deliver_finish+0xd40/0xd40
[ 31.644751] ? acpi_cppc_processor_probe+0x1d01/0x20b0
[ 31.650013] process_backlog+0x62d/0xe20
[ 31.654058] ? rps_trigger_softirq+0x2f0/0x2f0
[ 31.658615] net_rx_action+0x7c1/0x1a70
[ 31.662567] ? net_tx_action+0xab0/0xab0
[ 31.666608] __do_softirq+0x56d/0x93d
[ 31.670399] do_softirq_own_stack+0x2a/0x40
[ 31.674692]
[ 31.676909] __local_bh_enable_ip+0x114/0x140
[ 31.681381] local_bh_enable+0x36/0x40
[ 31.685248] ip_finish_output2+0x124e/0x1380
[ 31.689636] ip_finish_output+0xcb0/0xff0
[ 31.693765] ip_output+0x502/0x5c0
[ 31.697284] ? ip_mc_finish_output+0x3b0/0x3b0
[ 31.701842] ? ip_finish_output+0xff0/0xff0
[ 31.706140] ip_send_skb+0x5f3/0x820
[ 31.709840] ? __ip_local_out+0x5b0/0x5b0
[ 31.713991] udp_send_skb+0xe97/0x1320
[ 31.717889] udp_sendmsg+0xa24/0x3180
[ 31.721689] ? ip_copy_metadata+0xac0/0xac0
[ 31.726002] ? __msan_metadata_ptr_for_store_8+0x13/0x20
[ 31.731440] ? kmsan_set_origin_inline+0x6b/0x120
[ 31.736259] ? __msan_poison_alloca+0x15c/0x1d0
[ 31.740910] ? udp_send_skb+0x1320/0x1320
[ 31.745035] inet_sendmsg+0x48d/0x740
[ 31.748821] ? security_socket_sendmsg+0x9e/0x210
[ 31.753642] ? inet_getname+0x500/0x500
[ 31.757592] SYSC_sendto+0x6c3/0x7e0
[ 31.761290] SyS_sendto+0x8a/0xb0
[ 31.764720] do_syscall_64+0x309/0x430
[ 31.768589] ? SYSC_getpeername+0x560/0x560
[ 31.772890] entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[ 31.778067] RIP: 0033:0x440059
[ 31.781242] RSP: 002b:00007ffcd0e9f088 EFLAGS: 00000217 ORIG_RAX: 000000000000002c
[ 31.788924] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440059
[ 31.796171] RDX: 0000000000000287 RSI: 000000002029b000 RDI: 0000000000000003
[ 31.803429] RBP: 00000000006ca018 R08: 0000000020778000 R09: 0000000000000010
[ 31.810674] R10: 0000000000000000 R11: 0000000000000217 R12: 0000000000401980
[ 31.817919] R13: 0000000000401a10 R14: 0000000000000000 R15: 0000000000000000
[ 31.825169]
[ 31.826770] Uninit was created at:
[ 31.830291] kmsan_alloc_meta_for_pages+0x161/0x3a0
[ 31.835281] kmsan_alloc_page+0x82/0xe0
[ 31.839234] __alloc_pages_nodemask+0xf5b/0x5dc0
[ 31.843962] alloc_pages_current+0x6b5/0x970
[ 31.848354] skb_page_frag_refill+0x3ba/0x5e0
[ 31.852825] sk_page_frag_refill+0xa4/0x340
[ 31.857122] __ip_append_data+0x107e/0x3d10
[ 31.861418] ip_append_data+0x2fb/0x440
[ 31.865379] udp_sendmsg+0x746/0x3180
[ 31.869157] inet_sendmsg+0x48d/0x740
[ 31.872952] SYSC_sendto+0x6c3/0x7e0
[ 31.876643] SyS_sendto+0x8a/0xb0
[ 31.880073] do_syscall_64+0x309/0x430
[ 31.883942] entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[ 31.889104] ==================================================================
[ 31.896436] Disabling lock debugging due to kernel taint
[ 31.901867] Kernel panic - not syncing: panic_on_warn set ...
[ 31.901867]
[ 31.909208] CPU: 0 PID: 3580 Comm: syzkaller269536 Tainted: G B 4.16.0+ #83
[ 31.917498] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 31.926837] Call Trace:
[ 31.929397]
[ 31.931527] dump_stack+0x185/0x1d0
[ 31.935142] panic+0x39d/0x940
[ 31.938324] ? csum_partial+0x78e/0x850
[ 31.942359] kmsan_report+0x238/0x240
[ 31.946138] __msan_warning_32+0x6c/0xb0
[ 31.950185] csum_partial+0x78e/0x850
[ 31.953967] csum_partial_ext+0x89/0xa0
[ 31.957919] __skb_checksum+0x6d4/0x1010
[ 31.961966] ? skb_checksum+0x120/0x120
[ 31.965917] skb_checksum+0xec/0x120
[ 31.969606] ? skb_checksum+0x120/0x120
[ 31.973561] ? csum_partial_ext+0xa0/0xa0
[ 31.977687] __skb_checksum_complete+0x90/0x400
[ 31.982348] __udp4_lib_rcv+0x3156/0x4740
[ 31.986485] udp_rcv+0x5c/0x70
[ 31.989651] ? udp_v4_early_demux+0x1cd0/0x1cd0
[ 31.994295] ip_local_deliver_finish+0x6ed/0xd40
[ 31.999051] ip_local_deliver+0x43c/0x4e0
[ 32.003178] ? ip_local_deliver+0x4e0/0x4e0
[ 32.007482] ? ip_call_ra_chain+0x7b0/0x7b0
[ 32.011785] ip_rcv_finish+0x1253/0x16d0
[ 32.015828] ip_rcv+0x119d/0x16f0
[ 32.019257] ? ip_rcv+0x16f0/0x16f0
[ 32.022865] __netif_receive_skb_core+0x47cf/0x4a80
[ 32.027861] ? kmsan_internal_memset_shadow_inline+0xd0/0xd0
[ 32.034387] ? ip_local_deliver_finish+0xd40/0xd40
[ 32.039301] ? acpi_cppc_processor_probe+0x1d01/0x20b0
[ 32.044561] process_backlog+0x62d/0xe20
[ 32.048603] ? rps_trigger_softirq+0x2f0/0x2f0
[ 32.053166] net_rx_action+0x7c1/0x1a70
[ 32.057119] ? net_tx_action+0xab0/0xab0
[ 32.061179] __do_softirq+0x56d/0x93d
[ 32.064961] do_softirq_own_stack+0x2a/0x40
[ 32.069253]
[ 32.071470] __local_bh_enable_ip+0x114/0x140
[ 32.075943] local_bh_enable+0x36/0x40
[ 32.079808] ip_finish_output2+0x124e/0x1380
[ 32.084194] ip_finish_output+0xcb0/0xff0
[ 32.088318] ip_output+0x502/0x5c0
[ 32.091831] ? ip_mc_finish_output+0x3b0/0x3b0
[ 32.096388] ? ip_finish_output+0xff0/0xff0
[ 32.100683] ip_send_skb+0x5f3/0x820
[ 32.104380] ? __ip_local_out+0x5b0/0x5b0
[ 32.108506] udp_send_skb+0xe97/0x1320
[ 32.112374] udp_sendmsg+0xa24/0x3180
[ 32.116150] ? ip_copy_metadata+0xac0/0xac0
[ 32.120451] ? __msan_metadata_ptr_for_store_8+0x13/0x20
[ 32.125876] ? kmsan_set_origin_inline+0x6b/0x120
[ 32.130695] ? __msan_poison_alloca+0x15c/0x1d0
[ 32.135346] ? udp_send_skb+0x1320/0x1320
[ 32.139479] inet_sendmsg+0x48d/0x740
[ 32.143258] ? security_socket_sendmsg+0x9e/0x210
[ 32.148079] ? inet_getname+0x500/0x500
[ 32.152044] SYSC_sendto+0x6c3/0x7e0
[ 32.155748] SyS_sendto+0x8a/0xb0
[ 32.159180] do_syscall_64+0x309/0x430
[ 32.163056] ? SYSC_getpeername+0x560/0x560
[ 32.167356] entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[ 32.172521] RIP: 0033:0x440059
[ 32.175685] RSP: 002b:00007ffcd0e9f088 EFLAGS: 00000217 ORIG_RAX: 000000000000002c
[ 32.183367] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440059
[ 32.190611] RDX: 0000000000000287 RSI: 000000002029b000 RDI: 0000000000000003
[ 32.197855] RBP: 00000000006ca018 R08: 0000000020778000 R09: 0000000000000010
[ 32.205099] R10: 0000000000000000 R11: 0000000000000217 R12: 0000000000401980
[ 32.212344] R13: 0000000000401a10 R14: 0000000000000000 R15: 0000000000000000
[ 32.220184] Dumping ftrace buffer:
[ 32.223713] (ftrace buffer empty)
[ 32.227399] Kernel Offset: disabled
[ 32.231003] Rebooting in 86400 seconds..