[ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ 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. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.49' (ECDSA) to the list of known hosts. 2020/07/12 10:53:51 parsed 1 programs 2020/07/12 10:53:51 executed programs: 0 syzkaller login: [ 58.342739][ T6839] IPVS: ftp: loaded support on port[0] = 21 [ 58.433752][ T6839] chnl_net:caif_netlink_parms(): no params data found [ 58.483300][ T6839] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.490975][ T6839] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.500744][ T6839] device bridge_slave_0 entered promiscuous mode [ 58.510053][ T6839] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.517127][ T6839] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.526102][ T6839] device bridge_slave_1 entered promiscuous mode [ 58.545283][ T6839] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.560995][ T6839] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.582859][ T6839] team0: Port device team_slave_0 added [ 58.590508][ T6839] team0: Port device team_slave_1 added [ 58.608947][ T6839] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 58.615941][ T6839] 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. [ 58.642953][ T6839] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 58.655638][ T6839] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 58.663089][ T6839] 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. [ 58.689438][ T6839] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 58.761265][ T6839] device hsr_slave_0 entered promiscuous mode [ 58.808478][ T6839] device hsr_slave_1 entered promiscuous mode [ 58.940948][ T6839] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 59.002334][ T6839] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 59.060973][ T6839] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 59.100346][ T6839] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 59.164658][ T6839] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.171891][ T6839] bridge0: port 2(bridge_slave_1) entered forwarding state [ 59.179676][ T6839] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.186732][ T6839] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.229324][ T6839] 8021q: adding VLAN 0 to HW filter on device bond0 [ 59.243120][ T2597] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 59.253277][ T2597] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.261731][ T2597] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.270270][ T2597] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 59.283196][ T6839] 8021q: adding VLAN 0 to HW filter on device team0 [ 59.294215][ T2517] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 59.303306][ T2517] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.310415][ T2517] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.321275][ T2597] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 59.330376][ T2597] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.337396][ T2597] bridge0: port 2(bridge_slave_1) entered forwarding state [ 59.362227][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 59.371617][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 59.380567][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 59.390072][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 59.402174][ T2517] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 59.422858][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 59.430947][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 59.451275][ T6839] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 59.469510][ T2517] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 59.478156][ T2517] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 59.498465][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 59.506747][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 59.516396][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 59.524762][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 59.535052][ T6839] device veth0_vlan entered promiscuous mode [ 59.546430][ T6839] device veth1_vlan entered promiscuous mode [ 59.572604][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 59.581477][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 59.590071][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 59.598616][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 59.609731][ T6839] device veth0_macvtap entered promiscuous mode [ 59.623171][ T6839] device veth1_macvtap entered promiscuous mode [ 59.641600][ T6839] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 59.650953][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 59.659867][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 59.667916][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 59.676984][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 59.689777][ T6839] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 59.699191][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 59.707814][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 60.327608][ T0] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN [ 60.327619][ T0] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] [ 60.327633][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.8.0-rc4-next-20200710-syzkaller #0 [ 60.327640][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.327660][ T0] RIP: 0010:__switch_to_asm+0x0/0x40 [ 60.327674][ 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 [ 60.327681][ T0] RSP: 0018:ffffffff89a07ce8 EFLAGS: 00010046 [ 60.327692][ T0] RAX: dffffc0000000000 RBX: ffff8880ae635e18 RCX: 0000000000000000 [ 60.327700][ T0] RDX: 1ffff11015cc6bc2 RSI: ffff8880a69e21c0 RDI: ffffffff89a86580 [ 60.327708][ T0] RBP: ffffffff89a07db8 R08: 0000000000000001 R09: ffffffff89a86e50 [ 60.327716][ T0] R10: fffffbfff155eb51 R11: 0000000000000000 R12: ffff8880ae635e00 [ 60.327725][ T0] R13: ffffffff89a86580 R14: ffff8880a69e21c0 R15: ffffffff89a869b0 [ 60.327736][ T0] FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 60.327745][ T0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 60.327753][ T0] CR2: 000056483a987520 CR3: 00000000a7f0c000 CR4: 00000000001506f0 [ 60.327764][ T0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 60.327772][ T0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 60.327776][ T0] Call Trace: [ 60.327791][ T0] __schedule+0x8b4/0x1e80 [ 60.327809][ T0] ? io_schedule_timeout+0x140/0x140 [ 60.327825][ T0] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.327838][ T0] ? trace_hardirqs_on+0x5f/0x220 [ 60.327853][ T0] ? lockdep_hardirqs_on+0x6a/0xe0 [ 60.327867][ T0] schedule_idle+0x53/0x90 [ 60.327881][ T0] do_idle+0x323/0x6d0 [ 60.327897][ T0] ? arch_cpu_idle_exit+0x70/0x70 [ 60.327917][ T0] ? trace_init_perf_perm_irq_work_exit+0xe/0xe [ 60.327931][ T0] cpu_startup_entry+0x14/0x20 [ 60.327943][ T0] start_kernel+0x9cb/0xa06 [ 60.327956][ T0] ? mem_encrypt_init+0x5/0x5 [ 60.327972][ T0] ? x86_cpuid_vendor+0x84/0x90 [ 60.327985][ T0] ? __sanitizer_cov_trace_switch+0x45/0x70 [ 60.327999][ T0] ? load_ucode_bsp+0x1b7/0x1f7 [ 60.328015][ T0] secondary_startup_64+0xa4/0xb0 [ 60.328025][ T0] Modules linked in: [ 60.328040][ T0] ---[ end trace 096e8a407771afa8 ]--- [ 60.328055][ T0] RIP: 0010:__switch_to_asm+0x0/0x40 [ 60.328067][ 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 [ 60.328075][ T0] RSP: 0018:ffffffff89a07ce8 EFLAGS: 00010046 [ 60.328085][ T0] RAX: dffffc0000000000 RBX: ffff8880ae635e18 RCX: 0000000000000000 [ 60.328094][ T0] RDX: 1ffff11015cc6bc2 RSI: ffff8880a69e21c0 RDI: ffffffff89a86580 [ 60.328102][ T0] RBP: ffffffff89a07db8 R08: 0000000000000001 R09: ffffffff89a86e50 [ 60.328111][ T0] R10: fffffbfff155eb51 R11: 0000000000000000 R12: ffff8880ae635e00 [ 60.328119][ T0] R13: ffffffff89a86580 R14: ffff8880a69e21c0 R15: ffffffff89a869b0 [ 60.328130][ T0] FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 60.328139][ T0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 60.328147][ T0] CR2: 000056483a987520 CR3: 00000000a7f0c000 CR4: 00000000001506f0 [ 60.328154][ T0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 60.328162][ T0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 60.328168][ T0] Kernel panic - not syncing: Fatal exception [ 60.329410][ T0] Kernel Offset: disabled [ 60.691703][ T0] Rebooting in 86400 seconds..