[....] 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. [ 54.243252] kauditd_printk_skb: 4 callbacks suppressed [ 54.243280] audit: type=1800 audit(1545074814.293:29): pid=6393 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 54.267957] audit: type=1800 audit(1545074814.303:30): pid=6393 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.186' (ECDSA) to the list of known hosts. 2018/12/17 19:27:16 parsed 1 programs 2018/12/17 19:27:22 executed programs: 0 syzkaller login: [ 82.935048] IPVS: ftp: loaded support on port[0] = 21 [ 83.151681] ip (6572) used greatest stack depth: 53624 bytes left [ 83.411988] bridge0: port 1(bridge_slave_0) entered blocking state [ 83.418462] bridge0: port 1(bridge_slave_0) entered disabled state [ 83.426373] device bridge_slave_0 entered promiscuous mode [ 83.457455] bridge0: port 2(bridge_slave_1) entered blocking state [ 83.463919] bridge0: port 2(bridge_slave_1) entered disabled state [ 83.471335] device bridge_slave_1 entered promiscuous mode [ 83.501484] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 83.532838] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 83.624184] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 83.657304] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 83.798646] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 83.806614] team0: Port device team_slave_0 added [ 83.836685] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 83.844602] team0: Port device team_slave_1 added [ 83.882953] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 83.916186] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 83.953006] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 83.985321] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 84.285321] bridge0: port 2(bridge_slave_1) entered blocking state [ 84.291838] bridge0: port 2(bridge_slave_1) entered forwarding state [ 84.298768] bridge0: port 1(bridge_slave_0) entered blocking state [ 84.305328] bridge0: port 1(bridge_slave_0) entered forwarding state [ 84.313554] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 85.292691] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 85.404572] 8021q: adding VLAN 0 to HW filter on device bond0 [ 85.509222] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 85.631843] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 85.638047] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 85.646388] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 85.747412] 8021q: adding VLAN 0 to HW filter on device team0 [ 86.451837] ================================================================== [ 86.459248] BUG: KMSAN: uninit-value in vti6_tnl_xmit+0x4cb/0x2420 [ 86.465557] CPU: 0 PID: 6812 Comm: syz-executor0 Not tainted 4.20.0-rc5+ #2 [ 86.472645] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 86.481992] Call Trace: [ 86.484570] dump_stack+0x1c9/0x220 [ 86.488196] kmsan_report+0x12d/0x290 [ 86.492003] __msan_warning+0x76/0xc0 [ 86.495804] vti6_tnl_xmit+0x4cb/0x2420 [ 86.499766] ? __msan_poison_alloca+0x1e0/0x270 [ 86.504448] ? validate_xmit_xfrm+0x83/0x1420 [ 86.508957] ? vti6_dev_uninit+0x670/0x670 [ 86.513193] dev_hard_start_xmit+0x627/0xc80 [ 86.517621] __dev_queue_xmit+0x3173/0x3cf0 [ 86.521977] dev_queue_xmit+0x4b/0x60 [ 86.525772] ? __netdev_pick_tx+0x1290/0x1290 [ 86.530257] packet_sendmsg+0x7cbd/0x9200 [ 86.534396] ? kmsan_memcpy_memmove_metadata+0x1a9/0xf30 [ 86.539842] ? kmsan_memcpy_metadata+0xb/0x10 [ 86.544325] ? sock_write_iter+0x102/0x4f0 [ 86.548547] ? __se_sys_write+0x17a/0x370 [ 86.552685] ? do_syscall_64+0xcd/0x110 [ 86.556669] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 86.562023] ? vmalloc_to_page+0x585/0x6c0 [ 86.566298] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 86.571651] ? aa_sk_perm+0x7ab/0x9e0 [ 86.575487] ? compat_packet_setsockopt+0x360/0x360 [ 86.580493] sock_write_iter+0x3f4/0x4f0 [ 86.584565] ? sock_read_iter+0x4e0/0x4e0 [ 86.588733] __vfs_write+0x888/0xb80 [ 86.592463] vfs_write+0x4b4/0x900 [ 86.596016] __se_sys_write+0x17a/0x370 [ 86.600024] __x64_sys_write+0x4a/0x70 [ 86.603903] do_syscall_64+0xcd/0x110 [ 86.607710] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 86.612902] RIP: 0033:0x457669 [ 86.616086] Code: fd b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 86.634977] RSP: 002b:00007fffddb72cc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 86.642675] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457669 [ 86.649929] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 86.657184] RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 [ 86.664439] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000112a914 [ 86.671697] R13: 00000000004c2d95 R14: 00000000004da328 R15: 00000000ffffffff [ 86.678966] [ 86.680579] Uninit was created at: [ 86.684111] kmsan_internal_poison_shadow+0x92/0x150 [ 86.689197] kmsan_kmalloc+0xa1/0x100 [ 86.692989] kmsan_slab_alloc+0xe/0x10 [ 86.696865] __kmalloc_node_track_caller+0xf06/0x1120 [ 86.702045] __alloc_skb+0x318/0xa40 [ 86.705746] alloc_skb_with_frags+0x1c9/0xa80 [ 86.710225] sock_alloc_send_pskb+0xb5d/0x1140 [ 86.714799] packet_sendmsg+0x66a2/0x9200 [ 86.718937] sock_write_iter+0x3f4/0x4f0 [ 86.723005] __vfs_write+0x888/0xb80 [ 86.726704] vfs_write+0x4b4/0x900 [ 86.730229] __se_sys_write+0x17a/0x370 [ 86.734193] __x64_sys_write+0x4a/0x70 [ 86.738080] do_syscall_64+0xcd/0x110 [ 86.741872] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 86.747040] ================================================================== [ 86.754377] Disabling lock debugging due to kernel taint [ 86.759807] Kernel panic - not syncing: panic_on_warn set ... [ 86.765681] CPU: 0 PID: 6812 Comm: syz-executor0 Tainted: G B 4.20.0-rc5+ #2 [ 86.774153] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 86.783489] Call Trace: [ 86.786068] dump_stack+0x1c9/0x220 [ 86.789708] panic+0x3f0/0x98f [ 86.792931] kmsan_report+0x290/0x290 [ 86.796747] __msan_warning+0x76/0xc0 [ 86.800546] vti6_tnl_xmit+0x4cb/0x2420 [ 86.804511] ? __msan_poison_alloca+0x1e0/0x270 [ 86.809178] ? validate_xmit_xfrm+0x83/0x1420 [ 86.813692] ? vti6_dev_uninit+0x670/0x670 [ 86.817921] dev_hard_start_xmit+0x627/0xc80 [ 86.822344] __dev_queue_xmit+0x3173/0x3cf0 [ 86.826691] dev_queue_xmit+0x4b/0x60 [ 86.830499] ? __netdev_pick_tx+0x1290/0x1290 [ 86.835010] packet_sendmsg+0x7cbd/0x9200 [ 86.839163] ? kmsan_memcpy_memmove_metadata+0x1a9/0xf30 [ 86.844620] ? kmsan_memcpy_metadata+0xb/0x10 [ 86.849107] ? sock_write_iter+0x102/0x4f0 [ 86.853347] ? __se_sys_write+0x17a/0x370 [ 86.857498] ? do_syscall_64+0xcd/0x110 [ 86.861465] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 86.866827] ? vmalloc_to_page+0x585/0x6c0 [ 86.871064] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 86.876429] ? aa_sk_perm+0x7ab/0x9e0 [ 86.880262] ? compat_packet_setsockopt+0x360/0x360 [ 86.885268] sock_write_iter+0x3f4/0x4f0 [ 86.889345] ? sock_read_iter+0x4e0/0x4e0 [ 86.893484] __vfs_write+0x888/0xb80 [ 86.897212] vfs_write+0x4b4/0x900 [ 86.900798] __se_sys_write+0x17a/0x370 [ 86.904779] __x64_sys_write+0x4a/0x70 [ 86.908657] do_syscall_64+0xcd/0x110 [ 86.912468] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 86.917645] RIP: 0033:0x457669 [ 86.920842] Code: fd b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 86.939731] RSP: 002b:00007fffddb72cc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 86.947429] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457669 [ 86.954684] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 86.961956] RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 [ 86.969217] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000112a914 [ 86.976474] R13: 00000000004c2d95 R14: 00000000004da328 R15: 00000000ffffffff [ 86.984724] Kernel Offset: disabled [ 86.988361] Rebooting in 86400 seconds..