[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 30.611081] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 35.449389] random: sshd: uninitialized urandom read (32 bytes read) [ 35.887073] random: sshd: uninitialized urandom read (32 bytes read) [ 37.046367] random: sshd: uninitialized urandom read (32 bytes read) [ 96.291236] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.33' (ECDSA) to the list of known hosts. [ 101.766546] random: sshd: uninitialized urandom read (32 bytes read) [ 101.896826] IPVS: ftp: loaded support on port[0] = 21 [ 102.075228] bridge0: port 1(bridge_slave_0) entered blocking state [ 102.082611] bridge0: port 1(bridge_slave_0) entered disabled state [ 102.090371] device bridge_slave_0 entered promiscuous mode [ 102.111872] bridge0: port 2(bridge_slave_1) entered blocking state [ 102.118325] bridge0: port 2(bridge_slave_1) entered disabled state [ 102.125615] device bridge_slave_1 entered promiscuous mode [ 102.146922] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 102.168329] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 102.228950] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 102.253567] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 102.343249] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 102.350628] team0: Port device team_slave_0 added [ 102.371284] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 102.378529] team0: Port device team_slave_1 added [ 102.399797] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 102.423412] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 102.439681] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 102.463926] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready RTNETLINK answers: Operation not supported RTNETLINK answers: No buffer space available RTNETLINK answers: Operation not supported [ 102.650728] bridge0: port 2(bridge_slave_1) entered blocking state [ 102.657169] bridge0: port 2(bridge_slave_1) entered forwarding state [ 102.663903] bridge0: port 1(bridge_slave_0) entered blocking state [ 102.670306] 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: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument [ 103.351731] 8021q: adding VLAN 0 to HW filter on device bond0 [ 103.417738] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 103.484264] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 103.490665] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 103.498611] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 103.567996] 8021q: adding VLAN 0 to HW filter on device team0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 107.419694] WARNING: CPU: 0 PID: 4964 at net/core/stream.c:206 sk_stream_kill_queues+0x944/0x970 [ 107.428779] Kernel panic - not syncing: panic_on_warn set ... [ 107.428779] [ 107.436182] CPU: 0 PID: 4964 Comm: syz-executor457 Not tainted 4.17.0+ #6 [ 107.443109] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 107.452480] Call Trace: [ 107.455098] dump_stack+0x185/0x1d0 [ 107.458763] panic+0x3d0/0x990 [ 107.461975] ? disable_trace_on_warning+0x18/0xd0 [ 107.466849] __warn+0x40f/0x580 [ 107.470221] ? sk_stream_kill_queues+0x944/0x970 [ 107.474992] report_bug+0x72a/0x880 [ 107.478646] ? sk_stream_kill_queues+0x944/0x970 [ 107.483422] ? sk_stream_kill_queues+0x944/0x970 [ 107.488206] do_error_trap+0x1c1/0x620 [ 107.492114] ? kfree+0xcb/0x29e0 [ 107.495507] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 107.500898] ? kfree+0xde/0x29e0 [ 107.504301] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 107.509707] do_invalid_op+0x46/0x50 [ 107.513473] invalid_op+0x14/0x20 [ 107.516941] RIP: 0010:sk_stream_kill_queues+0x944/0x970 [ 107.522308] RSP: 0018:ffff8801a867f368 EFLAGS: 00010293 [ 107.527695] RAX: ffffffff87dbf654 RBX: 0000000000000813 RCX: ffff8801ab7bd7c0 [ 107.534965] RDX: 0000000000000000 RSI: aaaaaaaaaaaab000 RDI: ffffea0000000000 [ 107.542244] RBP: ffff8801a867f3e8 R08: 0000000000000000 R09: 0000000000000002 [ 107.549537] R10: ffff8801a66d3a00 R11: ffffffff88c44c40 R12: 0000000000000000 [ 107.556814] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000813 [ 107.564115] ? tcp_v6_init_sock+0xc0/0xc0 [ 107.568291] ? sk_stream_kill_queues+0x944/0x970 [ 107.573157] ? sk_stream_kill_queues+0x944/0x970 [ 107.577959] ? tcp_v6_init_sock+0xc0/0xc0 [ 107.582137] inet_csk_destroy_sock+0x2a4/0x5d0 [ 107.586781] tcp_close+0xe37/0x18f0 [ 107.590459] tls_sk_proto_close+0xc2f/0xcd0 [ 107.594820] ? tcp_check_oom+0x540/0x540 [ 107.598905] ? tls_getsockopt+0x800/0x800 [ 107.603085] inet_release+0x249/0x2b0 [ 107.606900] inet6_release+0xaf/0x100 [ 107.610810] ? __inet6_bind+0x1a70/0x1a70 [ 107.614973] sock_close+0xeb/0x310 [ 107.618546] __fput+0x458/0xa30 [ 107.621846] ? fput+0x2e0/0x2e0 [ 107.625157] ____fput+0x37/0x40 [ 107.628451] task_work_run+0x22e/0x2b0 [ 107.632345] do_exit+0x110e/0x3930 [ 107.635921] do_group_exit+0x1a0/0x360 [ 107.639816] get_signal+0x1405/0x1ec0 [ 107.643628] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 107.649019] ? __list_add_valid+0xb8/0x450 [ 107.653306] ? prepare_exit_to_usermode+0x271/0x3a0 [ 107.658353] ? prepare_exit_to_usermode+0x271/0x3a0 [ 107.663385] do_signal+0xb8/0x1d20 [ 107.666956] ? __msan_metadata_ptr_for_store_1+0x13/0x20 [ 107.672876] ? __schedule+0x67e/0x770 [ 107.676694] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 107.682080] ? schedule+0x1f0/0x2f0 [ 107.685756] prepare_exit_to_usermode+0x271/0x3a0 [ 107.690637] syscall_return_slowpath+0xe9/0x710 [ 107.695330] ? __x64_sys_sendto+0x1a1/0x210 [ 107.699664] do_syscall_64+0x1ad/0x230 [ 107.703566] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 107.708768] RIP: 0033:0x447ce9 [ 107.711955] RSP: 002b:00007feb54132d98 EFLAGS: 00000212 ORIG_RAX: 000000000000002c [ 107.719665] RAX: 0000000000008000 RBX: 00000000006dec5c RCX: 0000000000447ce9 [ 107.726959] RDX: 00000000fffffdef RSI: 00000000200005c0 RDI: 0000000000000007 [ 107.734231] RBP: 0000000000000000 R08: 0000000020000000 R09: 000000000000001c [ 107.741504] R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006dec58 [ 107.748769] R13: 0100000000000000 R14: 00007feb541339c0 R15: 000000000000000c [ 107.756480] Dumping ftrace buffer: [ 107.760022] (ftrace buffer empty) [ 107.763726] Kernel Offset: disabled [ 107.767347] Rebooting in 86400 seconds..