[ 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 '10.128.1.56' (ECDSA) to the list of known hosts. 2020/07/11 18:03:05 parsed 1 programs 2020/07/11 18:03:06 executed programs: 0 syzkaller login: [ 76.027643][ T29] audit: type=1400 audit(1594490586.145:8): avc: denied { execmem } for pid=6819 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 76.072158][ T6820] IPVS: ftp: loaded support on port[0] = 21 [ 76.174182][ T6820] chnl_net:caif_netlink_parms(): no params data found [ 76.225568][ T6820] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.233725][ T6820] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.242871][ T6820] device bridge_slave_0 entered promiscuous mode [ 76.252094][ T6820] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.259720][ T6820] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.267374][ T6820] device bridge_slave_1 entered promiscuous mode [ 76.288099][ T6820] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 76.300445][ T6820] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 76.322977][ T6820] team0: Port device team_slave_0 added [ 76.330412][ T6820] team0: Port device team_slave_1 added [ 76.347899][ T6820] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 76.354864][ T6820] 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. [ 76.381881][ T6820] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 76.394939][ T6820] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 76.402587][ T6820] 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. [ 76.429074][ T6820] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 76.511388][ T6820] device hsr_slave_0 entered promiscuous mode [ 76.567751][ T6820] device hsr_slave_1 entered promiscuous mode [ 76.706543][ T6820] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 76.760850][ T6820] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 76.840388][ T6820] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 76.909698][ T6820] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 76.974302][ T6820] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.981561][ T6820] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.989666][ T6820] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.996735][ T6820] bridge0: port 1(bridge_slave_0) entered forwarding state [ 77.043822][ T6820] 8021q: adding VLAN 0 to HW filter on device bond0 [ 77.057088][ T2516] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 77.069272][ T2516] bridge0: port 1(bridge_slave_0) entered disabled state [ 77.078218][ T2516] bridge0: port 2(bridge_slave_1) entered disabled state [ 77.086172][ T2516] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 77.099622][ T6820] 8021q: adding VLAN 0 to HW filter on device team0 [ 77.112226][ T28] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 77.121735][ T28] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.128889][ T28] bridge0: port 1(bridge_slave_0) entered forwarding state [ 77.148864][ T28] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 77.157319][ T28] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.164486][ T28] bridge0: port 2(bridge_slave_1) entered forwarding state [ 77.175810][ T2516] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 77.185054][ T2516] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 77.194885][ T2516] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 77.205838][ T28] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 77.215070][ T28] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 77.232438][ T6820] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 77.243384][ T6820] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 77.264370][ T2473] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 77.273934][ T2473] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 77.284262][ T2473] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 77.293535][ T2473] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 77.302982][ T2473] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 77.316915][ T2516] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 77.325198][ T2516] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 77.339841][ T6820] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 77.359159][ T2473] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 77.369578][ T2473] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 77.389191][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 77.398476][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 77.407035][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 77.415604][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 77.426265][ T6820] device veth0_vlan entered promiscuous mode [ 77.438941][ T6820] device veth1_vlan entered promiscuous mode [ 77.461605][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 77.471051][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 77.479416][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 77.489126][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 77.501474][ T6820] device veth0_macvtap entered promiscuous mode [ 77.511718][ T6820] device veth1_macvtap entered promiscuous mode [ 77.530908][ T6820] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 77.538937][ T2473] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 77.547203][ T2473] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 77.556782][ T2473] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 77.566017][ T2473] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 77.579134][ T6820] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 77.586827][ T2516] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 77.596349][ T2516] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 78.070720][ T0] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN [ 78.070732][ T0] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] [ 78.070746][ T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.8.0-rc4-syzkaller #0 [ 78.070753][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 78.070775][ T0] RIP: 0010:__switch_to_asm+0x0/0x40 [ 78.070789][ 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 [ 78.070797][ T0] RSP: 0018:ffffc90000d3fd00 EFLAGS: 00010046 [ 78.070808][ T0] RAX: dffffc0000000000 RBX: ffff8880ae735e18 RCX: 0000000000000000 [ 78.070816][ T0] RDX: 1ffff11015ce6bc2 RSI: ffff8880a2c923c0 RDI: ffff8880a9638340 [ 78.070823][ T0] RBP: ffffc90000d3fdd0 R08: 0000000000000001 R09: ffff8880a9638c08 [ 78.070831][ T0] R10: fffffbfff155cb69 R11: 0000000000000000 R12: ffff8880ae735e00 [ 78.070840][ T0] R13: ffff8880a9638340 R14: ffff8880a2c923c0 R15: ffff8880a9638770 [ 78.070851][ T0] FS: 0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 78.070859][ T0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 78.070868][ T0] CR2: 00005632fb0d6ad0 CR3: 00000000a4642000 CR4: 00000000001406e0 [ 78.070879][ T0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 78.070887][ T0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 78.070890][ T0] Call Trace: [ 78.070909][ T0] __schedule+0x8e1/0x1eb0 [ 78.070927][ T0] ? io_schedule_timeout+0x140/0x140 [ 78.070943][ T0] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 78.070956][ T0] ? trace_hardirqs_on+0x5f/0x220 [ 78.070972][ T0] ? lockdep_hardirqs_on+0x6a/0xe0 [ 78.070986][ T0] schedule_idle+0x53/0x90 [ 78.071001][ T0] do_idle+0x323/0x6d0 [ 78.071016][ T0] ? arch_cpu_idle_exit+0x70/0x70 [ 78.071028][ T0] ? trace_hardirqs_on+0x5f/0x220 [ 78.071043][ T0] ? lockdep_hardirqs_on+0x6a/0xe0 [ 78.071058][ T0] cpu_startup_entry+0x14/0x20 [ 78.071073][ T0] start_secondary+0x2b3/0x370 [ 78.071087][ T0] ? set_cpu_sibling_map+0x1e80/0x1e80 [ 78.071105][ T0] secondary_startup_64+0xa4/0xb0 [ 78.071115][ T0] Modules linked in: [ 78.071132][ T0] ---[ end trace 45b1ca154b18bcb7 ]--- [ 78.071147][ T0] RIP: 0010:__switch_to_asm+0x0/0x40 [ 78.071160][ 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 [ 78.071167][ T0] RSP: 0018:ffffc90000d3fd00 EFLAGS: 00010046 [ 78.071177][ T0] RAX: dffffc0000000000 RBX: ffff8880ae735e18 RCX: 0000000000000000 [ 78.071185][ T0] RDX: 1ffff11015ce6bc2 RSI: ffff8880a2c923c0 RDI: ffff8880a9638340 [ 78.071193][ T0] RBP: ffffc90000d3fdd0 R08: 0000000000000001 R09: ffff8880a9638c08 [ 78.071201][ T0] R10: fffffbfff155cb69 R11: 0000000000000000 R12: ffff8880ae735e00 [ 78.071209][ T0] R13: ffff8880a9638340 R14: ffff8880a2c923c0 R15: ffff8880a9638770 [ 78.071220][ T0] FS: 0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 78.071228][ T0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 78.071236][ T0] CR2: 00005632fb0d6ad0 CR3: 00000000a4642000 CR4: 00000000001406e0 [ 78.071244][ T0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 78.071252][ T0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 78.071258][ T0] Kernel panic - not syncing: Fatal exception [ 78.072278][ T0] Kernel Offset: disabled [ 78.425229][ T0] Rebooting in 86400 seconds..