[....] Starting OpenBSD Secure Shell server: sshd[ 30.768378] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 35.261953] random: sshd: uninitialized urandom read (32 bytes read) [ 35.593820] audit: type=1400 audit(1536618396.814:6): avc: denied { map } for pid=5500 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 [ 35.652491] random: sshd: uninitialized urandom read (32 bytes read) [ 36.273524] random: sshd: uninitialized urandom read (32 bytes read) [ 57.403630] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.15.203' (ECDSA) to the list of known hosts. [ 62.987997] random: sshd: uninitialized urandom read (32 bytes read) [ 63.122277] audit: type=1400 audit(1536618424.344:7): avc: denied { map } for pid=5514 comm="syz-execprog" path="/root/syz-execprog" dev="sda1" ino=16479 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 2018/09/10 22:27:04 parsed 1 programs [ 63.622688] audit: type=1400 audit(1536618424.844:8): avc: denied { map } for pid=5514 comm="syz-execprog" path="/sys/kernel/debug/kcov" dev="debugfs" ino=14714 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:debugfs_t:s0 tclass=file permissive=1 [ 64.461442] random: cc1: uninitialized urandom read (8 bytes read) 2018/09/10 22:27:07 executed programs: 0 [ 66.123171] audit: type=1400 audit(1536618427.344:9): avc: denied { map } for pid=5514 comm="syz-execprog" path="/root/syzkaller-shm707437588" dev="sda1" ino=16482 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:file_t:s0 tclass=file permissive=1 [ 66.158585] IPVS: ftp: loaded support on port[0] = 21 [ 66.426444] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.433110] bridge0: port 1(bridge_slave_0) entered disabled state [ 66.441026] device bridge_slave_0 entered promiscuous mode [ 66.460633] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.467353] bridge0: port 2(bridge_slave_1) entered disabled state [ 66.474475] device bridge_slave_1 entered promiscuous mode [ 66.494131] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 66.513365] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 66.564558] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 66.585064] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 66.662173] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 66.669657] team0: Port device team_slave_0 added [ 66.688072] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 66.695548] team0: Port device team_slave_1 added [ 66.712017] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 66.734693] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 66.755884] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 66.777247] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 66.925553] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.932098] bridge0: port 2(bridge_slave_1) entered forwarding state [ 66.939088] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.945464] bridge0: port 1(bridge_slave_0) entered forwarding state [ 67.473788] 8021q: adding VLAN 0 to HW filter on device bond0 [ 67.528238] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 67.582323] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 67.589283] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 67.597318] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 67.647276] 8021q: adding VLAN 0 to HW filter on device team0 [ 67.956354] 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. [ 68.870101] kasan: CONFIG_KASAN_INLINE enabled [ 68.874872] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 68.882532] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 68.888766] CPU: 0 PID: 5865 Comm: syz-executor0 Not tainted 4.19.0-rc3+ #10 [ 68.895935] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 68.905297] RIP: 0010:kvm_pv_send_ipi+0x364/0xdd0 [ 68.910134] 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 [ 68.929022] RSP: 0018:ffff8801d7997028 EFLAGS: 00010203 [ 68.934372] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000014 [ 68.941626] RDX: 0000000000000002 RSI: ffffffff8118fc08 RDI: 0000000000000005 [ 68.948880] RBP: ffff8801d79971c8 R08: ffff8801b8132700 R09: 1ffffffff12b43d5 [ 68.956133] R10: ffffed003b5c4732 R11: ffff8801dae23993 R12: ffff8801d79971a0 [ 68.963384] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8801d7997120 [ 68.970643] FS: 00007fefa8fe3700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 68.978853] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 68.984715] CR2: 0000000000000000 CR3: 00000001b7bfb000 CR4: 00000000001426f0 [ 68.991988] Call Trace: [ 68.994569] ? __lock_is_held+0xb5/0x140 [ 68.998622] ? graph_lock+0x170/0x170 [ 69.002417] ? kvm_apic_set_irq+0x170/0x170 [ 69.006742] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 69.012265] ? check_preemption_disabled+0x48/0x200 [ 69.017265] ? check_preemption_disabled+0x48/0x200 [ 69.022275] ? __lock_is_held+0xb5/0x140 [ 69.026349] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 69.031872] ? vmx_read_guest_seg_ar+0x221/0x270 [ 69.036623] kvm_emulate_hypercall+0xa1a/0xf20 [ 69.041194] ? kvm_gen_update_masterclock+0x350/0x350 [ 69.046368] ? graph_lock+0x170/0x170 [ 69.050165] ? vmx_vcpu_run+0x135b/0x2700 [ 69.054317] ? vmx_vcpu_run+0x134f/0x2700 [ 69.058449] ? vmx_vcpu_run+0x135b/0x2700 [ 69.062584] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 69.068113] ? check_preemption_disabled+0x48/0x200 [ 69.073114] ? check_preemption_disabled+0x48/0x200 [ 69.078124] ? __lock_is_held+0xb5/0x140 [ 69.082204] handle_vmcall+0x15/0x20 [ 69.085907] ? handle_io+0x100/0x100 [ 69.089609] vmx_handle_exit+0x2f7/0x17e0 [ 69.093748] ? lock_acquire+0x1ed/0x520 [ 69.097725] ? vcpu_enter_guest+0x12f2/0x62e0 [ 69.102209] ? vcpu_enter_guest+0x1271/0x62e0 [ 69.106691] ? handle_vmfunc+0x9d0/0x9d0 [ 69.110744] ? trace_hardirqs_on+0xbd/0x310 [ 69.115048] ? kvm_arch_vcpu_ioctl_run+0x375/0x16e0 [ 69.120052] ? check_preemption_disabled+0x48/0x200 [ 69.125050] ? check_preemption_disabled+0x48/0x200 [ 69.130068] vcpu_enter_guest+0x14a9/0x62e0 [ 69.134384] ? __phys_addr+0xa6/0x120 [ 69.138190] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 69.143713] ? vmcs_load+0xd8/0x150 [ 69.147330] ? emulator_read_emulated+0x50/0x50 [ 69.151984] ? vmx_vcpu_load+0xb06/0x1030 [ 69.156123] ? vmx_write_tsc_offset+0x680/0x680 [ 69.160775] ? graph_lock+0x170/0x170 [ 69.164569] ? drop_futex_key_refs.isra.15+0x6d/0xe0 [ 69.169671] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 69.175207] ? check_preemption_disabled+0x48/0x200 [ 69.180213] ? check_preemption_disabled+0x48/0x200 [ 69.185215] ? __lock_is_held+0xb5/0x140 [ 69.189271] ? kvm_check_async_pf_completion+0x3ae/0x5c0 [ 69.194800] ? kvm_clear_async_pf_completion_queue+0x770/0x770 [ 69.200844] ? kvm_arch_dev_ioctl+0x630/0x630 [ 69.205329] ? preempt_notifier_dec+0x20/0x20 [ 69.209815] kvm_arch_vcpu_ioctl_run+0x375/0x16e0 [ 69.214643] ? kvm_arch_vcpu_ioctl_run+0x375/0x16e0 [ 69.219648] kvm_vcpu_ioctl+0x72b/0x1150 [ 69.223694] ? kvm_vcpu_block+0x1030/0x1030 [ 69.228003] ? find_held_lock+0x36/0x1c0 [ 69.232052] ? __fget+0x4aa/0x740 [ 69.235492] ? check_preemption_disabled+0x48/0x200 [ 69.240499] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 69.246299] ? kasan_check_read+0x11/0x20 [ 69.250433] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 69.255696] ? rcu_bh_qs+0xc0/0xc0 [ 69.259225] ? __fget+0x4d1/0x740 [ 69.262668] ? ksys_dup3+0x680/0x680 [ 69.266378] ? fget_raw+0x20/0x20 [ 69.269826] ? kvm_vcpu_block+0x1030/0x1030 [ 69.274149] do_vfs_ioctl+0x1de/0x1720 [ 69.278042] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 69.283231] ? ioctl_preallocate+0x300/0x300 [ 69.287651] ? selinux_file_mprotect+0x620/0x620 [ 69.292404] ? mqueue_flush_file+0x110/0x110 [ 69.296808] ? __x64_sys_futex+0x47f/0x6a0 [ 69.301034] ? do_syscall_64+0x9a/0x820 [ 69.305009] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 69.310565] ? security_file_ioctl+0x94/0xc0 [ 69.315005] ksys_ioctl+0xa9/0xd0 [ 69.318451] __x64_sys_ioctl+0x73/0xb0 [ 69.322345] do_syscall_64+0x1b9/0x820 [ 69.326223] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 69.331577] ? syscall_return_slowpath+0x5e0/0x5e0 [ 69.336503] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 69.341354] ? trace_hardirqs_on_caller+0x310/0x310 [ 69.346365] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 69.351374] ? prepare_exit_to_usermode+0x291/0x3b0 [ 69.356385] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 69.361228] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 69.366410] RIP: 0033:0x4572a9 [ 69.369598] 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 [ 69.388511] RSP: 002b:00007fefa8fe2c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 69.396207] RAX: ffffffffffffffda RBX: 00007fefa8fe36d4 RCX: 00000000004572a9 [ 69.403468] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 [ 69.410727] RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000 [ 69.417984] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 69.425247] R13: 00000000004cf9b0 R14: 00000000004c5c37 R15: 0000000000000000 [ 69.432520] Modules linked in: [ 69.435732] Dumping ftrace buffer: [ 69.439294] (ftrace buffer empty) [ 69.445797] ---[ end trace 949c6c3e0504c39d ]--- [ 69.450653] RIP: 0010:kvm_pv_send_ipi+0x364/0xdd0 [ 69.455558] 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 [ 69.474514] RSP: 0018:ffff8801d7997028 EFLAGS: 00010203 [ 69.479941] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000014 [ 69.487250] RDX: 0000000000000002 RSI: ffffffff8118fc08 RDI: 0000000000000005 [ 69.494512] RBP: ffff8801d79971c8 R08: ffff8801b8132700 R09: 1ffffffff12b43d5 [ 69.501814] R10: ffffed003b5c4732 R11: ffff8801dae23993 R12: ffff8801d79971a0 [ 69.509109] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8801d7997120 [ 69.516408] FS: 00007fefa8fe3700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 69.524640] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 69.531018] CR2: 0000000000000000 CR3: 00000001b7bfb000 CR4: 00000000001426f0 [ 69.538347] Kernel panic - not syncing: Fatal exception [ 69.544027] Dumping ftrace buffer: [ 69.547558] (ftrace buffer empty) [ 69.551889] Kernel Offset: disabled [ 69.555519] Rebooting in 86400 seconds..