[....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[ 33.720085] random: sshd: uninitialized urandom read (32 bytes read)
[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
Debian GNU/Linux 7 syzkaller ttyS0
syzkaller login: [ 37.192000] random: sshd: uninitialized urandom read (32 bytes read)
[ 37.564781] random: sshd: uninitialized urandom read (32 bytes read)
[ 38.476645] random: sshd: uninitialized urandom read (32 bytes read)
[ 38.744150] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.15.218' (ECDSA) to the list of known hosts.
[ 44.596637] random: sshd: uninitialized urandom read (32 bytes read)
[ 44.741501] IPVS: ftp: loaded support on port[0] = 21
[ 44.958856] bridge0: port 1(bridge_slave_0) entered blocking state
[ 44.965276] bridge0: port 1(bridge_slave_0) entered disabled state
[ 44.972951] device bridge_slave_0 entered promiscuous mode
[ 44.999262] bridge0: port 2(bridge_slave_1) entered blocking state
[ 45.005772] bridge0: port 2(bridge_slave_1) entered disabled state
[ 45.013378] device bridge_slave_1 entered promiscuous mode
[ 45.037941] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready
[ 45.063319] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready
[ 45.133504] bond0: Enslaving bond_slave_0 as an active interface with an up link
[ 45.162082] bond0: Enslaving bond_slave_1 as an active interface with an up link
[ 45.272778] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready
[ 45.280565] team0: Port device team_slave_0 added
[ 45.304749] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready
[ 45.312465] team0: Port device team_slave_1 added
[ 45.336873] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready
[ 45.365804] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready
[ 45.393474] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready
[ 45.421058] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready
RTNETLINK answers: Operation not supported
RTNETLINK answers: No buffer space available
[ 45.657625] bridge0: port 2(bridge_slave_1) entered blocking state
[ 45.664092] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 45.670976] bridge0: port 1(bridge_slave_0) entered blocking state
[ 45.677397] bridge0: port 1(bridge_slave_0) entered forwarding state
RTNETLINK answers: Operation not supported
RTNETLINK answers: Operation not supported
RTNETLINK answers: Operation not supported
RTNETLINK answers: Operation not supported
RTNETLINK answers: Invalid argument
RTNETLINK answers: Invalid argument
RTNETLINK answers: Invalid argument
[ 46.526337] 8021q: adding VLAN 0 to HW filter on device bond0
[ 46.608215] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready
[ 46.688941] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready
[ 46.695133] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready
[ 46.703649] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[ 46.782840] 8021q: adding VLAN 0 to HW filter on device team0
executing program
[ 47.259493] ==================================================================
[ 47.266897] BUG: KMSAN: uninit-value in ip_rcv_core+0xabd/0x1160
[ 47.273042] CPU: 1 PID: 4270 Comm: syz-executor158 Not tainted 4.19.0-rc1+ #42
[ 47.280415] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 47.289770] Call Trace:
[ 47.292403]
[ 47.294554] dump_stack+0x14b/0x190
[ 47.298189] kmsan_report+0x183/0x2b0
[ 47.302010] __msan_warning+0x70/0xc0
[ 47.305811] ip_rcv_core+0xabd/0x1160
[ 47.309623] ip_rcv+0xbb/0x6d0
[ 47.312819] process_backlog+0x752/0x10b0
[ 47.317011] ? ip_local_deliver_finish+0xea0/0xea0
[ 47.321936] ? rps_trigger_softirq+0x2e0/0x2e0
[ 47.326513] net_rx_action+0x723/0x19d0
[ 47.330536] ? net_tx_action+0xc40/0xc40
[ 47.334590] __do_softirq+0x562/0x948
[ 47.338394] do_softirq_own_stack+0x49/0x80
[ 47.342720]
[ 47.344964] __local_bh_enable_ip+0x119/0x150
[ 47.349458] local_bh_enable+0x36/0x40
[ 47.353340] __dev_queue_xmit+0x35a8/0x3ab0
[ 47.357655] ? kmsan_memcpy_origins+0x111/0x1b0
[ 47.362363] dev_queue_xmit+0x4b/0x60
[ 47.366154] ? __netdev_pick_tx+0x12e0/0x12e0
[ 47.370655] packet_sendmsg+0x80ff/0x8c60
[ 47.374814] ? __msan_metadata_ptr_for_load_8+0x10/0x20
[ 47.380259] ___sys_sendmsg+0xe70/0x1290
[ 47.384339] ? compat_packet_setsockopt+0x360/0x360
[ 47.389386] __se_sys_sendmsg+0x2a3/0x3d0
[ 47.393542] __x64_sys_sendmsg+0x4a/0x70
[ 47.397598] do_syscall_64+0xb8/0x100
[ 47.401412] entry_SYSCALL_64_after_hwframe+0x63/0xe7
[ 47.406593] RIP: 0033:0x441149
[ 47.409789] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 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 db 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00
[ 47.428720] RSP: 002b:00007ffebf721a18 EFLAGS: 00000286 ORIG_RAX: 000000000000002e
[ 47.436439] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000441149
[ 47.443800] RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003
[ 47.451083] RBP: 00000000006cc018 R08: 0000000000000100 R09: 0000000000000100
[ 47.458364] R10: 0000000000000100 R11: 0000000000000286 R12: 00000000004020b0
[ 47.465626] R13: 0000000000402140 R14: 0000000000000000 R15: 0000000000000000
[ 47.472895]
[ 47.474509] Uninit was stored to memory at:
[ 47.478830] kmsan_internal_chain_origin+0x128/0x210
[ 47.483933] __msan_chain_origin+0x69/0xc0
[ 47.488180] iptunnel_xmit+0xa3c/0xd50
[ 47.492062] ip_tunnel_xmit+0x33e1/0x3750
[ 47.496202] ipgre_xmit+0xdcf/0xeb0
[ 47.499822] dev_hard_start_xmit+0x5df/0xc20
[ 47.504221] __dev_queue_xmit+0x2f35/0x3ab0
[ 47.508549] dev_queue_xmit+0x4b/0x60
[ 47.512357] packet_sendmsg+0x80ff/0x8c60
[ 47.516499] ___sys_sendmsg+0xe70/0x1290
[ 47.520549] __se_sys_sendmsg+0x2a3/0x3d0
[ 47.524696] __x64_sys_sendmsg+0x4a/0x70
[ 47.528771] do_syscall_64+0xb8/0x100
[ 47.532579] entry_SYSCALL_64_after_hwframe+0x63/0xe7
[ 47.537757]
[ 47.539384] Uninit was created at:
[ 47.542916] kmsan_internal_poison_shadow+0xb8/0x1b0
[ 47.548006] kmsan_kmalloc+0x98/0x100
[ 47.551794] kmsan_slab_alloc+0x10/0x20
[ 47.555761] __kmalloc_node_track_caller+0x9e7/0x1160
[ 47.560963] __alloc_skb+0x2f5/0x9e0
[ 47.564673] alloc_skb_with_frags+0x1d0/0xac0
[ 47.569184] sock_alloc_send_pskb+0xb47/0x1170
[ 47.573780] packet_sendmsg+0x6599/0x8c60
[ 47.577936] ___sys_sendmsg+0xe70/0x1290
[ 47.581988] __se_sys_sendmsg+0x2a3/0x3d0
[ 47.586125] __x64_sys_sendmsg+0x4a/0x70
[ 47.590185] do_syscall_64+0xb8/0x100
[ 47.593999] entry_SYSCALL_64_after_hwframe+0x63/0xe7
[ 47.599179] ==================================================================
[ 47.606526] Disabling lock debugging due to kernel taint
[ 47.611968] Kernel panic - not syncing: panic_on_warn set ...
[ 47.611968]
[ 47.619344] CPU: 1 PID: 4270 Comm: syz-executor158 Tainted: G B 4.19.0-rc1+ #42
[ 47.628079] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 47.637423] Call Trace:
[ 47.639998]
[ 47.642147] dump_stack+0x14b/0x190
[ 47.645796] panic+0x35d/0x8cb
[ 47.649015] ? __msan_metadata_ptr_for_store_1+0x13/0x20
[ 47.654466] kmsan_report+0x2a8/0x2b0
[ 47.658269] __msan_warning+0x70/0xc0
[ 47.662067] ip_rcv_core+0xabd/0x1160
[ 47.665873] ip_rcv+0xbb/0x6d0
[ 47.669071] process_backlog+0x752/0x10b0
[ 47.673225] ? ip_local_deliver_finish+0xea0/0xea0
[ 47.678154] ? rps_trigger_softirq+0x2e0/0x2e0
[ 47.682748] net_rx_action+0x723/0x19d0
[ 47.686750] ? net_tx_action+0xc40/0xc40
[ 47.690810] __do_softirq+0x562/0x948
[ 47.694612] do_softirq_own_stack+0x49/0x80
[ 47.698922]
[ 47.701155] __local_bh_enable_ip+0x119/0x150
[ 47.705657] local_bh_enable+0x36/0x40
[ 47.709547] __dev_queue_xmit+0x35a8/0x3ab0
[ 47.713866] ? kmsan_memcpy_origins+0x111/0x1b0
[ 47.718552] dev_queue_xmit+0x4b/0x60
[ 47.722348] ? __netdev_pick_tx+0x12e0/0x12e0
[ 47.726837] packet_sendmsg+0x80ff/0x8c60
[ 47.731003] ? __msan_metadata_ptr_for_load_8+0x10/0x20
[ 47.736402] ___sys_sendmsg+0xe70/0x1290
[ 47.740468] ? compat_packet_setsockopt+0x360/0x360
[ 47.745514] __se_sys_sendmsg+0x2a3/0x3d0
[ 47.749677] __x64_sys_sendmsg+0x4a/0x70
[ 47.753766] do_syscall_64+0xb8/0x100
[ 47.757577] entry_SYSCALL_64_after_hwframe+0x63/0xe7
[ 47.762762] RIP: 0033:0x441149
[ 47.765946] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 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 db 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00
[ 47.784842] RSP: 002b:00007ffebf721a18 EFLAGS: 00000286 ORIG_RAX: 000000000000002e
[ 47.792546] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000441149
[ 47.799803] RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003
[ 47.807063] RBP: 00000000006cc018 R08: 0000000000000100 R09: 0000000000000100
[ 47.814323] R10: 0000000000000100 R11: 0000000000000286 R12: 00000000004020b0
[ 47.821579] R13: 0000000000402140 R14: 0000000000000000 R15: 0000000000000000
[ 47.829251] Dumping ftrace buffer:
[ 47.832788] (ftrace buffer empty)
[ 47.836482] Kernel Offset: disabled
[ 47.840100] Rebooting in 86400 seconds..