[ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.146' (ECDSA) to the list of known hosts. 2020/07/11 13:20:02 parsed 1 programs 2020/07/11 13:20:02 executed programs: 0 syzkaller login: [ 59.728287][ T6814] IPVS: ftp: loaded support on port[0] = 21 [ 59.826023][ T6814] chnl_net:caif_netlink_parms(): no params data found [ 59.872561][ T6814] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.879855][ T6814] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.888185][ T6814] device bridge_slave_0 entered promiscuous mode [ 59.897019][ T6814] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.904207][ T6814] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.912025][ T6814] device bridge_slave_1 entered promiscuous mode [ 59.932713][ T6814] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.944806][ T6814] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.966705][ T6814] team0: Port device team_slave_0 added [ 59.974488][ T6814] team0: Port device team_slave_1 added [ 59.991652][ T6814] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 59.998645][ T6814] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 60.024830][ T6814] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 60.037277][ T6814] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 60.045146][ T6814] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 60.071137][ T6814] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 60.145172][ T6814] device hsr_slave_0 entered promiscuous mode [ 60.193375][ T6814] device hsr_slave_1 entered promiscuous mode [ 60.344265][ T6814] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 60.405284][ T6814] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 60.454823][ T6814] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 60.504292][ T6814] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 60.558653][ T6814] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.565836][ T6814] bridge0: port 2(bridge_slave_1) entered forwarding state [ 60.573609][ T6814] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.580694][ T6814] bridge0: port 1(bridge_slave_0) entered forwarding state [ 60.625789][ T6814] 8021q: adding VLAN 0 to HW filter on device bond0 [ 60.638796][ T2473] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 60.649303][ T2473] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.657794][ T2473] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.666459][ T2473] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 60.679635][ T6814] 8021q: adding VLAN 0 to HW filter on device team0 [ 60.691176][ T3793] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 60.700000][ T3793] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.707116][ T3793] bridge0: port 1(bridge_slave_0) entered forwarding state [ 60.719097][ T2473] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 60.728282][ T2473] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.735394][ T2473] bridge0: port 2(bridge_slave_1) entered forwarding state [ 60.754710][ T3793] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 60.774209][ T2483] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 60.783917][ T2483] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 60.793052][ T2483] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 60.801183][ T2483] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 60.811795][ T6814] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 60.830232][ T2483] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 60.837697][ T2483] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 60.854485][ T6814] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 60.873102][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 60.881743][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 60.905987][ T2483] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 60.915103][ T2483] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 60.925911][ T6814] device veth0_vlan entered promiscuous mode [ 60.933134][ T3793] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 60.940716][ T3793] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 60.955288][ T6814] device veth1_vlan entered promiscuous mode [ 60.977120][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 60.985588][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 60.994570][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 61.004214][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 61.015073][ T6814] device veth0_macvtap entered promiscuous mode [ 61.025217][ T6814] device veth1_macvtap entered promiscuous mode [ 61.041775][ T6814] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 61.049216][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 61.058967][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 61.067291][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 61.076353][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 61.090042][ T6814] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 61.098540][ T3793] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 61.107768][ T3793] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 61.647093][ T0] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN [ 61.647104][ T0] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] [ 61.647118][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.8.0-rc4-syzkaller #0 [ 61.647126][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.647147][ T0] RIP: 0010:__switch_to_asm+0x0/0x40 [ 61.647161][ T0] Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 61.647168][ T0] RSP: 0018:ffffffff89a07ce8 EFLAGS: 00010046 [ 61.647179][ T0] RAX: dffffc0000000000 RBX: ffff8880ae635e18 RCX: 0000000000000000 [ 61.647187][ T0] RDX: 1ffff11015cc6bc2 RSI: ffff88809f3a01c0 RDI: ffffffff89a86580 [ 61.647195][ T0] RBP: ffffffff89a07db8 R08: 0000000000000001 R09: ffffffff89a86e48 [ 61.647203][ T0] R10: fffffbfff155cb69 R11: 0000000000000000 R12: ffff8880ae635e00 [ 61.647211][ T0] R13: ffffffff89a86580 R14: ffff88809f3a01c0 R15: ffffffff89a869b0 [ 61.647222][ T0] FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 61.647230][ T0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 61.647238][ T0] CR2: 0000560bd5201500 CR3: 0000000093de4000 CR4: 00000000001406f0 [ 61.647250][ T0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 61.647257][ T0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 61.647261][ T0] Call Trace: [ 61.647286][ T0] __schedule+0x8e1/0x1eb0 [ 61.647304][ T0] ? io_schedule_timeout+0x140/0x140 [ 61.647319][ T0] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.647332][ T0] ? trace_hardirqs_on+0x5f/0x220 [ 61.647347][ T0] ? lockdep_hardirqs_on+0x6a/0xe0 [ 61.647361][ T0] schedule_idle+0x53/0x90 [ 61.647375][ T0] do_idle+0x323/0x6d0 [ 61.647390][ T0] ? arch_cpu_idle_exit+0x70/0x70 [ 61.647412][ T0] ? trace_init_perf_perm_irq_work_exit+0xe/0xe [ 61.647426][ T0] cpu_startup_entry+0x14/0x20 [ 61.647441][ T0] start_kernel+0x9cb/0xa06 [ 61.647455][ T0] ? mem_encrypt_init+0x5/0x5 [ 61.647471][ T0] ? x86_cpuid_vendor+0x84/0x90 [ 61.647487][ T0] ? __sanitizer_cov_trace_switch+0x45/0x70 [ 61.647500][ T0] ? load_ucode_bsp+0x1b7/0x1f7 [ 61.647515][ T0] secondary_startup_64+0xa4/0xb0 [ 61.647526][ T0] Modules linked in: [ 61.647544][ T0] ---[ end trace b334ff3c2a8d7141 ]--- [ 61.647559][ T0] RIP: 0010:__switch_to_asm+0x0/0x40 [ 61.647571][ T0] Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 61.647578][ T0] RSP: 0018:ffffffff89a07ce8 EFLAGS: 00010046 [ 61.647588][ T0] RAX: dffffc0000000000 RBX: ffff8880ae635e18 RCX: 0000000000000000 [ 61.647596][ T0] RDX: 1ffff11015cc6bc2 RSI: ffff88809f3a01c0 RDI: ffffffff89a86580 [ 61.647604][ T0] RBP: ffffffff89a07db8 R08: 0000000000000001 R09: ffffffff89a86e48 [ 61.647612][ T0] R10: fffffbfff155cb69 R11: 0000000000000000 R12: ffff8880ae635e00 [ 61.647621][ T0] R13: ffffffff89a86580 R14: ffff88809f3a01c0 R15: ffffffff89a869b0 [ 61.647631][ T0] FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 61.647639][ T0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 61.647647][ T0] CR2: 0000560bd5201500 CR3: 0000000093de4000 CR4: 00000000001406f0 [ 61.647658][ T0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 61.647666][ T0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 61.647672][ T0] Kernel panic - not syncing: Fatal exception [ 61.648687][ T0] Kernel Offset: disabled [ 62.008710][ T0] Rebooting in 86400 seconds..