[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 24.992278] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 30.254568] random: sshd: uninitialized urandom read (32 bytes read) [ 30.639757] random: sshd: uninitialized urandom read (32 bytes read) [ 31.240648] random: sshd: uninitialized urandom read (32 bytes read) [ 38.585261] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.13' (ECDSA) to the list of known hosts. [ 44.137445] random: sshd: uninitialized urandom read (32 bytes read) 2018/09/09 07:04:40 parsed 1 programs [ 45.198289] random: cc1: uninitialized urandom read (8 bytes read) 2018/09/09 07:04:41 executed programs: 0 [ 46.498768] IPVS: ftp: loaded support on port[0] = 21 [ 46.611144] ip (5375) used greatest stack depth: 16504 bytes left [ 46.743802] bridge0: port 1(bridge_slave_0) entered blocking state [ 46.750679] bridge0: port 1(bridge_slave_0) entered disabled state [ 46.758375] device bridge_slave_0 entered promiscuous mode [ 46.778389] bridge0: port 2(bridge_slave_1) entered blocking state [ 46.784837] bridge0: port 2(bridge_slave_1) entered disabled state [ 46.792086] device bridge_slave_1 entered promiscuous mode [ 46.810147] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 46.828554] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 46.879624] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 46.900563] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 46.975156] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 46.982556] team0: Port device team_slave_0 added [ 46.999813] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 47.007105] team0: Port device team_slave_1 added [ 47.024315] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 47.043072] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 47.063472] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 47.083682] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 47.225730] bridge0: port 2(bridge_slave_1) entered blocking state [ 47.232479] bridge0: port 2(bridge_slave_1) entered forwarding state [ 47.239339] bridge0: port 1(bridge_slave_0) entered blocking state [ 47.245755] bridge0: port 1(bridge_slave_0) entered forwarding state [ 47.739329] 8021q: adding VLAN 0 to HW filter on device bond0 [ 47.789755] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 47.838272] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 47.844445] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 47.853119] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 47.899494] 8021q: adding VLAN 0 to HW filter on device team0 [ 48.214149] 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. [ 48.253854] kasan: CONFIG_KASAN_INLINE enabled [ 48.258672] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 48.258691] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 48.258705] CPU: 0 PID: 5616 Comm: syz-executor0 Not tainted 4.19.0-rc2+ #229 [ 48.258723] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.258744] RIP: 0010:kvm_pv_send_ipi+0x364/0xdd0 [ 48.258762] Code: 45 84 ed 0f 84 da 07 00 00 e8 38 d3 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 [ 48.312615] RSP: 0018:ffff8801b8ef7028 EFLAGS: 00010203 [ 48.317967] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000014 [ 48.325223] RDX: 0000000000000002 RSI: ffffffff8118fc08 RDI: 0000000000000005 [ 48.332474] RBP: ffff8801b8ef71c8 R08: ffff8801cece0040 R09: 1ffffffff12b43cd [ 48.339731] R10: ffffed003b5c4732 R11: ffff8801dae23993 R12: ffff8801b8ef71a0 [ 48.346984] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8801b8ef7120 [ 48.354242] FS: 00007fbe97134700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 48.362450] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 48.368310] CR2: 0000000000000000 CR3: 00000001c5ba2000 CR4: 00000000001426f0 [ 48.375576] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 48.382835] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 48.390096] Call Trace: [ 48.392673] ? __lock_is_held+0xb5/0x140 [ 48.396796] ? graph_lock+0x170/0x170 [ 48.400589] ? kvm_apic_set_irq+0x170/0x170 [ 48.404898] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 48.410417] ? check_preemption_disabled+0x48/0x200 [ 48.415420] ? check_preemption_disabled+0x48/0x200 [ 48.420425] ? __lock_is_held+0xb5/0x140 [ 48.424479] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 48.430003] ? vmx_read_guest_seg_ar+0x221/0x270 [ 48.434749] kvm_emulate_hypercall+0xa1a/0xf20 [ 48.439317] ? kvm_gen_update_masterclock+0x350/0x350 [ 48.444503] ? graph_lock+0x170/0x170 [ 48.448295] ? vmx_vcpu_run+0x135b/0x2700 [ 48.452422] ? vmx_vcpu_run+0x134f/0x2700 [ 48.456555] ? vmx_vcpu_run+0x135b/0x2700 [ 48.460684] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 48.466204] ? check_preemption_disabled+0x48/0x200 [ 48.471203] ? check_preemption_disabled+0x48/0x200 [ 48.476205] ? __lock_is_held+0xb5/0x140 [ 48.480252] handle_vmcall+0x15/0x20 [ 48.483952] ? handle_io+0x100/0x100 [ 48.487772] vmx_handle_exit+0x2f7/0x17e0 [ 48.491905] ? lock_acquire+0x1ed/0x520 [ 48.495862] ? vcpu_enter_guest+0x12f2/0x62e0 [ 48.500341] ? vcpu_enter_guest+0x1271/0x62e0 [ 48.504822] ? handle_vmfunc+0x9d0/0x9d0 [ 48.508867] ? trace_hardirqs_on+0xbd/0x310 [ 48.513172] ? kvm_arch_vcpu_ioctl_run+0x375/0x16e0 [ 48.518254] ? check_preemption_disabled+0x48/0x200 [ 48.523362] ? check_preemption_disabled+0x48/0x200 [ 48.528364] vcpu_enter_guest+0x14a9/0x62e0 [ 48.532670] ? __phys_addr+0xa6/0x120 [ 48.536462] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 48.542007] ? vmcs_load+0xd8/0x150 [ 48.545618] ? emulator_read_emulated+0x50/0x50 [ 48.550270] ? vmx_vcpu_load+0xb06/0x1030 [ 48.554400] ? vmx_write_tsc_offset+0x680/0x680 [ 48.559069] ? graph_lock+0x170/0x170 [ 48.562853] ? drop_futex_key_refs.isra.15+0x6d/0xe0 [ 48.567938] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 48.573455] ? check_preemption_disabled+0x48/0x200 [ 48.578525] ? check_preemption_disabled+0x48/0x200 [ 48.583535] ? __lock_is_held+0xb5/0x140 [ 48.587582] ? kvm_check_async_pf_completion+0x3ae/0x5c0 [ 48.593014] ? kvm_clear_async_pf_completion_queue+0x770/0x770 [ 48.598967] ? kvm_arch_dev_ioctl+0x630/0x630 [ 48.603453] ? preempt_notifier_dec+0x20/0x20 [ 48.607940] kvm_arch_vcpu_ioctl_run+0x375/0x16e0 [ 48.612773] ? kvm_arch_vcpu_ioctl_run+0x375/0x16e0 [ 48.617778] kvm_vcpu_ioctl+0x72b/0x1150 [ 48.621836] ? kvm_vcpu_block+0x1030/0x1030 [ 48.626231] ? find_held_lock+0x36/0x1c0 [ 48.630304] ? __fget+0x4aa/0x740 [ 48.633740] ? check_preemption_disabled+0x48/0x200 [ 48.638745] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 48.644529] ? kasan_check_read+0x11/0x20 [ 48.648706] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 48.653993] ? rcu_bh_qs+0xc0/0xc0 [ 48.657521] ? __fget+0x4d1/0x740 [ 48.660961] ? ksys_dup3+0x680/0x680 [ 48.664670] ? fget_raw+0x20/0x20 [ 48.668107] ? kvm_vcpu_block+0x1030/0x1030 [ 48.672414] do_vfs_ioctl+0x1de/0x1720 [ 48.676285] ? lock_release+0x970/0x970 [ 48.680242] ? arch_local_save_flags+0x40/0x40 [ 48.684815] ? ioctl_preallocate+0x300/0x300 [ 48.689230] ? __fget_light+0x2e9/0x430 [ 48.693186] ? fget_raw+0x20/0x20 [ 48.696628] ? mqueue_flush_file+0x110/0x110 [ 48.701023] ? __x64_sys_futex+0x47f/0x6a0 [ 48.705243] ? do_syscall_64+0x9a/0x820 [ 48.709210] ? do_syscall_64+0x9a/0x820 [ 48.713178] ? lockdep_hardirqs_on+0x421/0x5c0 [ 48.717748] ? security_file_ioctl+0x94/0xc0 [ 48.722143] ksys_ioctl+0xa9/0xd0 [ 48.725590] __x64_sys_ioctl+0x73/0xb0 [ 48.729464] do_syscall_64+0x1b9/0x820 [ 48.733343] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 48.738692] ? syscall_return_slowpath+0x5e0/0x5e0 [ 48.743614] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 48.748440] ? trace_hardirqs_on_caller+0x310/0x310 [ 48.753438] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 48.758439] ? prepare_exit_to_usermode+0x291/0x3b0 [ 48.763439] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 48.768269] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 48.773446] RIP: 0033:0x457099 [ 48.776622] 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 [ 48.795509] RSP: 002b:00007fbe97133c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 48.803201] RAX: ffffffffffffffda RBX: 00007fbe971346d4 RCX: 0000000000457099 [ 48.810450] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 [ 48.817702] RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000 [ 48.824971] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 48.832352] R13: 00000000004cf730 R14: 00000000004c59b9 R15: 0000000000000000 [ 48.839610] Modules linked in: [ 48.842788] Dumping ftrace buffer: [ 48.846304] (ftrace buffer empty) [ 48.859279] ---[ end trace ba5408a97ba9db7a ]--- [ 48.864080] RIP: 0010:kvm_pv_send_ipi+0x364/0xdd0 [ 48.868963] Code: 45 84 ed 0f 84 da 07 00 00 e8 38 d3 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 [ 48.888359] RSP: 0018:ffff8801b8ef7028 EFLAGS: 00010203 [ 48.893724] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000014 [ 48.901032] RDX: 0000000000000002 RSI: ffffffff8118fc08 RDI: 0000000000000005 [ 48.908413] RBP: ffff8801b8ef71c8 R08: ffff8801cece0040 R09: 1ffffffff12b43cd [ 48.915674] R10: ffffed003b5c4732 R11: ffff8801dae23993 R12: ffff8801b8ef71a0 [ 48.922963] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8801b8ef7120 [ 48.930256] FS: 00007fbe97134700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 48.938501] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 48.944396] CR2: 00007f97c35f0000 CR3: 00000001c5ba2000 CR4: 00000000001426e0 [ 48.951946] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 48.959976] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 48.967288] Kernel panic - not syncing: Fatal exception [ 48.973016] Dumping ftrace buffer: [ 48.976589] (ftrace buffer empty) [ 48.980818] Kernel Offset: disabled [ 48.984441] Rebooting in 86400 seconds..