[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 26.394373] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 29.576987] random: sshd: uninitialized urandom read (32 bytes read) [ 29.931302] random: sshd: uninitialized urandom read (32 bytes read) [ 30.549300] random: sshd: uninitialized urandom read (32 bytes read) [ 107.018327] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.38' (ECDSA) to the list of known hosts. [ 112.565784] random: sshd: uninitialized urandom read (32 bytes read) 2018/09/11 23:57:29 parsed 1 programs [ 113.523375] random: cc1: uninitialized urandom read (8 bytes read) 2018/09/11 23:57:30 executed programs: 0 [ 114.474833] IPVS: ftp: loaded support on port[0] = 21 [ 114.712169] bridge0: port 1(bridge_slave_0) entered blocking state [ 114.719566] bridge0: port 1(bridge_slave_0) entered disabled state [ 114.726833] device bridge_slave_0 entered promiscuous mode [ 114.745200] bridge0: port 2(bridge_slave_1) entered blocking state [ 114.751813] bridge0: port 2(bridge_slave_1) entered disabled state [ 114.758868] device bridge_slave_1 entered promiscuous mode [ 114.766884] ip (5397) used greatest stack depth: 16952 bytes left [ 114.776267] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 114.794553] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 114.841551] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 114.862282] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 114.935396] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 114.942917] team0: Port device team_slave_0 added [ 114.960379] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 114.968177] team0: Port device team_slave_1 added [ 114.987127] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 115.007753] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 115.028622] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 115.049453] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 115.196723] bridge0: port 2(bridge_slave_1) entered blocking state [ 115.203176] bridge0: port 2(bridge_slave_1) entered forwarding state [ 115.210245] bridge0: port 1(bridge_slave_0) entered blocking state [ 115.216700] bridge0: port 1(bridge_slave_0) entered forwarding state [ 115.594959] ip (5518) used greatest stack depth: 16888 bytes left [ 115.738784] 8021q: adding VLAN 0 to HW filter on device bond0 [ 115.791211] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 115.842826] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 115.849122] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 115.858026] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 115.907549] 8021q: adding VLAN 0 to HW filter on device team0 [ 116.220236] 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. [ 116.255293] kasan: CONFIG_KASAN_INLINE enabled [ 116.261606] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 116.269260] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 116.275488] CPU: 0 PID: 5617 Comm: syz-executor0 Not tainted 4.19.0-rc3+ #8 [ 116.282561] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 116.291900] RIP: 0010:kvm_pv_send_ipi+0x364/0xdd0 [ 116.296725] 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 [ 116.315731] RSP: 0018:ffff8801b8d87028 EFLAGS: 00010203 [ 116.321078] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000014 [ 116.328327] RDX: 0000000000000002 RSI: ffffffff8118fc08 RDI: 0000000000000005 [ 116.335574] RBP: ffff8801b8d871c8 R08: ffff8801cd422040 R09: 1ffffffff12b43d5 [ 116.342825] R10: ffffed003b5c4732 R11: ffff8801dae23993 R12: ffff8801b8d871a0 [ 116.350084] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8801b8d87120 [ 116.357341] FS: 00007fb0f1c4c700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 116.365547] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 116.371405] CR2: 0000000000000000 CR3: 00000001d7ee7000 CR4: 00000000001426f0 [ 116.378657] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 116.385907] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 116.393158] Call Trace: [ 116.395733] ? __lock_is_held+0xb5/0x140 [ 116.399779] ? graph_lock+0x170/0x170 [ 116.403563] ? kvm_apic_set_irq+0x170/0x170 [ 116.407868] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 116.413387] ? check_preemption_disabled+0x48/0x200 [ 116.418484] ? check_preemption_disabled+0x48/0x200 [ 116.423496] ? __lock_is_held+0xb5/0x140 [ 116.427542] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 116.433064] ? vmx_read_guest_seg_ar+0x221/0x270 [ 116.437803] kvm_emulate_hypercall+0xa1a/0xf20 [ 116.442371] ? kvm_gen_update_masterclock+0x350/0x350 [ 116.447543] ? graph_lock+0x170/0x170 [ 116.451323] ? vmx_vcpu_run+0x135b/0x2700 [ 116.455504] ? vmx_vcpu_run+0x134f/0x2700 [ 116.459639] ? vmx_vcpu_run+0x135b/0x2700 [ 116.463771] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 116.469293] ? check_preemption_disabled+0x48/0x200 [ 116.474287] ? check_preemption_disabled+0x48/0x200 [ 116.479288] ? __lock_is_held+0xb5/0x140 [ 116.483335] handle_vmcall+0x15/0x20 [ 116.487030] ? handle_io+0x100/0x100 [ 116.490723] vmx_handle_exit+0x2f7/0x17e0 [ 116.494851] ? lock_acquire+0x1ed/0x520 [ 116.498817] ? vcpu_enter_guest+0x12f2/0x62e0 [ 116.503301] ? vcpu_enter_guest+0x1271/0x62e0 [ 116.507833] ? handle_vmfunc+0x9d0/0x9d0 [ 116.511891] ? trace_hardirqs_on+0xbd/0x310 [ 116.516204] ? kvm_arch_vcpu_ioctl_run+0x375/0x16e0 [ 116.521210] ? check_preemption_disabled+0x48/0x200 [ 116.526209] ? check_preemption_disabled+0x48/0x200 [ 116.531217] vcpu_enter_guest+0x14a9/0x62e0 [ 116.535529] ? __phys_addr+0xa6/0x120 [ 116.539421] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 116.544953] ? vmcs_load+0xd8/0x150 [ 116.548567] ? emulator_read_emulated+0x50/0x50 [ 116.553220] ? vmx_vcpu_load+0xb06/0x1030 [ 116.557403] ? vmx_write_tsc_offset+0x680/0x680 [ 116.562059] ? graph_lock+0x170/0x170 [ 116.565848] ? drop_futex_key_refs.isra.15+0x6d/0xe0 [ 116.570940] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 116.576458] ? check_preemption_disabled+0x48/0x200 [ 116.581451] ? check_preemption_disabled+0x48/0x200 [ 116.586493] ? __lock_is_held+0xb5/0x140 [ 116.590591] ? kvm_check_async_pf_completion+0x3ae/0x5c0 [ 116.596033] ? kvm_clear_async_pf_completion_queue+0x770/0x770 [ 116.602031] ? kvm_arch_dev_ioctl+0x630/0x630 [ 116.606513] ? preempt_notifier_dec+0x20/0x20 [ 116.610992] kvm_arch_vcpu_ioctl_run+0x375/0x16e0 [ 116.615854] ? kvm_arch_vcpu_ioctl_run+0x375/0x16e0 [ 116.620863] kvm_vcpu_ioctl+0x72b/0x1150 [ 116.624917] ? kvm_vcpu_block+0x1030/0x1030 [ 116.629233] ? find_held_lock+0x36/0x1c0 [ 116.633277] ? __fget+0x4aa/0x740 [ 116.636712] ? check_preemption_disabled+0x48/0x200 [ 116.641709] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 116.647488] ? kasan_check_read+0x11/0x20 [ 116.651620] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 116.656876] ? rcu_bh_qs+0xc0/0xc0 [ 116.660402] ? __fget+0x4d1/0x740 [ 116.663836] ? ksys_dup3+0x680/0x680 [ 116.667531] ? fget_raw+0x20/0x20 [ 116.670968] ? kvm_vcpu_block+0x1030/0x1030 [ 116.675273] do_vfs_ioctl+0x1de/0x1720 [ 116.679141] ? lock_release+0x970/0x970 [ 116.683097] ? arch_local_save_flags+0x40/0x40 [ 116.687660] ? ioctl_preallocate+0x300/0x300 [ 116.692057] ? __fget_light+0x2e9/0x430 [ 116.696018] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 116.701577] ? smack_file_ioctl+0x210/0x3c0 [ 116.705883] ? fget_raw+0x20/0x20 [ 116.709323] ? smack_file_lock+0x2e0/0x2e0 [ 116.713538] ? mqueue_flush_file+0x110/0x110 [ 116.717936] ? __x64_sys_futex+0x47f/0x6a0 [ 116.722155] ? do_syscall_64+0x9a/0x820 [ 116.726108] ? do_syscall_64+0x9a/0x820 [ 116.730063] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 116.735581] ? security_file_ioctl+0x94/0xc0 [ 116.739974] ksys_ioctl+0xa9/0xd0 [ 116.743414] __x64_sys_ioctl+0x73/0xb0 [ 116.747284] do_syscall_64+0x1b9/0x820 [ 116.751158] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 116.756501] ? syscall_return_slowpath+0x5e0/0x5e0 [ 116.761411] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 116.766238] ? trace_hardirqs_on_caller+0x310/0x310 [ 116.771235] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 116.776230] ? prepare_exit_to_usermode+0x291/0x3b0 [ 116.781227] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 116.786052] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 116.791228] RIP: 0033:0x4572d9 [ 116.794412] 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 [ 116.813412] RSP: 002b:00007fb0f1c4bc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 116.821104] RAX: ffffffffffffffda RBX: 00007fb0f1c4c6d4 RCX: 00000000004572d9 [ 116.828366] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 [ 116.835615] RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000 [ 116.842862] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 116.850154] R13: 00000000004cf9f0 R14: 00000000004c5c77 R15: 0000000000000000 [ 116.857411] Modules linked in: [ 116.860584] Dumping ftrace buffer: [ 116.864099] (ftrace buffer empty) [ 116.869907] ---[ end trace 5156e19c0bc85f16 ]--- [ 116.874669] RIP: 0010:kvm_pv_send_ipi+0x364/0xdd0 [ 116.879544] 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 [ 116.898469] RSP: 0018:ffff8801b8d87028 EFLAGS: 00010203 [ 116.903815] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000014 [ 116.911095] RDX: 0000000000000002 RSI: ffffffff8118fc08 RDI: 0000000000000005 [ 116.918917] RBP: ffff8801b8d871c8 R08: ffff8801cd422040 R09: 1ffffffff12b43d5 [ 116.926226] R10: ffffed003b5c4732 R11: ffff8801dae23993 R12: ffff8801b8d871a0 [ 116.933481] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8801b8d87120 [ 116.940855] FS: 00007fb0f1c4c700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 116.949094] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 116.954957] CR2: ffffffffff600400 CR3: 00000001d7ee7000 CR4: 00000000001426f0 [ 116.962242] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 116.969522] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 116.976884] Kernel panic - not syncing: Fatal exception [ 116.982535] Dumping ftrace buffer: [ 116.986055] (ftrace buffer empty) [ 116.990321] Kernel Offset: disabled [ 116.993947] Rebooting in 86400 seconds..