[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 26.473877] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 29.792611] random: sshd: uninitialized urandom read (32 bytes read) [ 30.134393] random: sshd: uninitialized urandom read (32 bytes read) [ 30.727642] random: sshd: uninitialized urandom read (32 bytes read) [ 109.102408] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.17' (ECDSA) to the list of known hosts. [ 114.803515] random: sshd: uninitialized urandom read (32 bytes read) 2018/09/12 01:12:47 parsed 1 programs [ 115.916349] random: cc1: uninitialized urandom read (8 bytes read) 2018/09/12 01:12:48 executed programs: 0 [ 117.004636] IPVS: ftp: loaded support on port[0] = 21 [ 117.121897] ip (5377) used greatest stack depth: 15992 bytes left [ 117.261014] bridge0: port 1(bridge_slave_0) entered blocking state [ 117.267955] bridge0: port 1(bridge_slave_0) entered disabled state [ 117.275296] device bridge_slave_0 entered promiscuous mode [ 117.294137] bridge0: port 2(bridge_slave_1) entered blocking state [ 117.300647] bridge0: port 2(bridge_slave_1) entered disabled state [ 117.307869] device bridge_slave_1 entered promiscuous mode [ 117.326135] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 117.344455] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 117.394166] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 117.414698] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 117.491796] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 117.499554] team0: Port device team_slave_0 added [ 117.516062] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 117.523170] team0: Port device team_slave_1 added [ 117.540794] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 117.560975] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 117.581072] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 117.601379] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 117.749710] bridge0: port 2(bridge_slave_1) entered blocking state [ 117.756221] bridge0: port 2(bridge_slave_1) entered forwarding state [ 117.763079] bridge0: port 1(bridge_slave_0) entered blocking state [ 117.769505] bridge0: port 1(bridge_slave_0) entered forwarding state [ 118.282321] 8021q: adding VLAN 0 to HW filter on device bond0 [ 118.334692] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 118.387290] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 118.393422] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 118.402016] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 118.449480] 8021q: adding VLAN 0 to HW filter on device team0 [ 118.767173] L1TF CPU bug present and SMT on, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/l1tf.html for details. [ 118.806785] kasan: CONFIG_KASAN_INLINE enabled [ 118.811547] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 118.818972] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 118.825197] CPU: 0 PID: 5618 Comm: syz-executor0 Not tainted 4.19.0-rc3+ #8 [ 118.832274] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 118.841616] RIP: 0010:kvm_pv_send_ipi+0x364/0xdd0 [ 118.846446] Code: 45 84 ed 0f 84 da 07 00 00 e8 b8 d4 65 00 48 8d 4b 14 48 b8 00 00 00 00 00 fc ff df 48 89 ca 48 89 8d 70 fe ff ff 48 c1 ea 03 <0f> b6 14 02 48 89 c8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 f5 [ 118.865332] RSP: 0018:ffff8801b86a7028 EFLAGS: 00010203 [ 118.870681] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000014 [ 118.878031] RDX: 0000000000000002 RSI: ffffffff8118fc08 RDI: 0000000000000005 [ 118.885285] RBP: ffff8801b86a71c8 R08: ffff8801b87aa040 R09: 1ffffffff12b43d5 [ 118.892535] R10: ffffed003b5c4732 R11: ffff8801dae23993 R12: ffff8801b86a71a0 [ 118.899788] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8801b86a7120 [ 118.907044] FS: 00007f71510bf700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 118.915252] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 118.921116] CR2: 0000000000000000 CR3: 00000001b9a35000 CR4: 00000000001426f0 [ 118.928367] Call Trace: [ 118.930941] ? __lock_is_held+0xb5/0x140 [ 118.935013] ? graph_lock+0x170/0x170 [ 118.938807] ? kvm_apic_set_irq+0x170/0x170 [ 118.943119] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 118.948639] ? check_preemption_disabled+0x48/0x200 [ 118.953636] ? check_preemption_disabled+0x48/0x200 [ 118.958635] ? __lock_is_held+0xb5/0x140 [ 118.962678] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 118.968207] ? vmx_read_guest_seg_ar+0x221/0x270 [ 118.972954] kvm_emulate_hypercall+0xa1a/0xf20 [ 118.977521] ? kvm_gen_update_masterclock+0x350/0x350 [ 118.982691] ? graph_lock+0x170/0x170 [ 118.986472] ? vmx_vcpu_run+0x135b/0x2700 [ 118.990986] ? vmx_vcpu_run+0x134f/0x2700 [ 118.995114] ? vmx_vcpu_run+0x135b/0x2700 [ 118.999245] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 119.004767] ? check_preemption_disabled+0x48/0x200 [ 119.009763] ? check_preemption_disabled+0x48/0x200 [ 119.014770] ? __lock_is_held+0xb5/0x140 [ 119.018829] handle_vmcall+0x15/0x20 [ 119.022531] ? handle_io+0x100/0x100 [ 119.026230] vmx_handle_exit+0x2f7/0x17e0 [ 119.030360] ? lock_acquire+0x1ed/0x520 [ 119.034330] ? vcpu_enter_guest+0x12f2/0x62e0 [ 119.038808] ? vcpu_enter_guest+0x1271/0x62e0 [ 119.043283] ? handle_vmfunc+0x9d0/0x9d0 [ 119.047327] ? trace_hardirqs_on+0xbd/0x310 [ 119.051628] ? kvm_arch_vcpu_ioctl_run+0x375/0x16e0 [ 119.056628] ? check_preemption_disabled+0x48/0x200 [ 119.061639] ? check_preemption_disabled+0x48/0x200 [ 119.066647] vcpu_enter_guest+0x14a9/0x62e0 [ 119.070956] ? __phys_addr+0xa6/0x120 [ 119.074739] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 119.080259] ? vmcs_load+0xd8/0x150 [ 119.083873] ? emulator_read_emulated+0x50/0x50 [ 119.088531] ? vmx_vcpu_load+0xb06/0x1030 [ 119.092670] ? vmx_write_tsc_offset+0x680/0x680 [ 119.097322] ? graph_lock+0x170/0x170 [ 119.101109] ? drop_futex_key_refs.isra.15+0x6d/0xe0 [ 119.106196] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 119.111714] ? check_preemption_disabled+0x48/0x200 [ 119.116714] ? check_preemption_disabled+0x48/0x200 [ 119.121716] ? __lock_is_held+0xb5/0x140 [ 119.125770] ? kvm_check_async_pf_completion+0x3ae/0x5c0 [ 119.131208] ? kvm_clear_async_pf_completion_queue+0x770/0x770 [ 119.137164] ? kvm_arch_dev_ioctl+0x630/0x630 [ 119.141708] ? preempt_notifier_dec+0x20/0x20 [ 119.146201] kvm_arch_vcpu_ioctl_run+0x375/0x16e0 [ 119.151027] ? kvm_arch_vcpu_ioctl_run+0x375/0x16e0 [ 119.156037] kvm_vcpu_ioctl+0x72b/0x1150 [ 119.160089] ? kvm_vcpu_block+0x1030/0x1030 [ 119.164498] ? find_held_lock+0x36/0x1c0 [ 119.168549] ? __fget+0x4aa/0x740 [ 119.171982] ? check_preemption_disabled+0x48/0x200 [ 119.176990] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 119.182774] ? kasan_check_read+0x11/0x20 [ 119.186971] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 119.192237] ? rcu_bh_qs+0xc0/0xc0 [ 119.195765] ? __fget+0x4d1/0x740 [ 119.199202] ? ksys_dup3+0x680/0x680 [ 119.202905] ? fget_raw+0x20/0x20 [ 119.206349] ? kvm_vcpu_block+0x1030/0x1030 [ 119.210654] do_vfs_ioctl+0x1de/0x1720 [ 119.214523] ? lock_release+0x970/0x970 [ 119.218490] ? arch_local_save_flags+0x40/0x40 [ 119.223054] ? ioctl_preallocate+0x300/0x300 [ 119.227472] ? __fget_light+0x2e9/0x430 [ 119.231433] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 119.236954] ? smack_file_ioctl+0x210/0x3c0 [ 119.241260] ? fget_raw+0x20/0x20 [ 119.244699] ? smack_file_lock+0x2e0/0x2e0 [ 119.248916] ? mqueue_flush_file+0x110/0x110 [ 119.253310] ? __x64_sys_futex+0x47f/0x6a0 [ 119.257530] ? do_syscall_64+0x9a/0x820 [ 119.261484] ? do_syscall_64+0x9a/0x820 [ 119.265440] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 119.270961] ? security_file_ioctl+0x94/0xc0 [ 119.275406] ksys_ioctl+0xa9/0xd0 [ 119.278854] __x64_sys_ioctl+0x73/0xb0 [ 119.282725] do_syscall_64+0x1b9/0x820 [ 119.286599] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 119.292026] ? syscall_return_slowpath+0x5e0/0x5e0 [ 119.296945] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 119.301771] ? trace_hardirqs_on_caller+0x310/0x310 [ 119.306770] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 119.311767] ? prepare_exit_to_usermode+0x291/0x3b0 [ 119.316768] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 119.321595] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 119.326765] RIP: 0033:0x4572d9 [ 119.329940] Code: fd b4 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 b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 119.348820] RSP: 002b:00007f71510bec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 119.356571] RAX: ffffffffffffffda RBX: 00007f71510bf6d4 RCX: 00000000004572d9 [ 119.363828] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 [ 119.371084] RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000 [ 119.378343] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 119.385593] R13: 00000000004cf9f0 R14: 00000000004c5c77 R15: 0000000000000000 [ 119.392844] Modules linked in: [ 119.396024] Dumping ftrace buffer: [ 119.399540] (ftrace buffer empty) [ 119.404643] ---[ end trace 8d4411852a556d4f ]--- [ 119.409421] RIP: 0010:kvm_pv_send_ipi+0x364/0xdd0 [ 119.414252] Code: 45 84 ed 0f 84 da 07 00 00 e8 b8 d4 65 00 48 8d 4b 14 48 b8 00 00 00 00 00 fc ff df 48 89 ca 48 89 8d 70 fe ff ff 48 c1 ea 03 <0f> b6 14 02 48 89 c8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 f5 [ 119.433181] RSP: 0018:ffff8801b86a7028 EFLAGS: 00010203 [ 119.438551] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000014 [ 119.445831] RDX: 0000000000000002 RSI: ffffffff8118fc08 RDI: 0000000000000005 [ 119.453091] RBP: ffff8801b86a71c8 R08: ffff8801b87aa040 R09: 1ffffffff12b43d5 [ 119.460377] R10: ffffed003b5c4732 R11: ffff8801dae23993 R12: ffff8801b86a71a0 [ 119.467649] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8801b86a7120 [ 119.474911] FS: 00007f71510bf700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 119.483169] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 119.489078] CR2: 0000000000000000 CR3: 00000001b9a35000 CR4: 00000000001426f0 [ 119.496370] Kernel panic - not syncing: Fatal exception [ 119.501974] Dumping ftrace buffer: [ 119.505494] (ftrace buffer empty) [ 119.509794] Kernel Offset: disabled [ 119.513429] Rebooting in 86400 seconds..