[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.80' (ECDSA) to the list of known hosts. syzkaller login: [ 33.812969] IPVS: ftp: loaded support on port[0] = 21 [ 33.880660] chnl_net:caif_netlink_parms(): no params data found [ 33.958861] bridge0: port 1(bridge_slave_0) entered blocking state [ 33.966256] bridge0: port 1(bridge_slave_0) entered disabled state [ 33.973823] device bridge_slave_0 entered promiscuous mode [ 33.980719] bridge0: port 2(bridge_slave_1) entered blocking state [ 33.988279] bridge0: port 2(bridge_slave_1) entered disabled state [ 33.995650] device bridge_slave_1 entered promiscuous mode [ 34.012626] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 34.021255] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 34.039204] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 34.047061] team0: Port device team_slave_0 added [ 34.052682] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 34.059919] team0: Port device team_slave_1 added [ 34.074536] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 34.080762] 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. [ 34.106527] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 34.117879] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 34.124164] 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. [ 34.149407] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 34.160751] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 34.168388] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 34.187564] device hsr_slave_0 entered promiscuous mode [ 34.193480] device hsr_slave_1 entered promiscuous mode [ 34.199409] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 34.206574] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 34.267770] bridge0: port 2(bridge_slave_1) entered blocking state [ 34.274207] bridge0: port 2(bridge_slave_1) entered forwarding state [ 34.280951] bridge0: port 1(bridge_slave_0) entered blocking state [ 34.287362] bridge0: port 1(bridge_slave_0) entered forwarding state [ 34.319130] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 34.326036] 8021q: adding VLAN 0 to HW filter on device bond0 [ 34.334907] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 34.343657] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 34.351807] bridge0: port 1(bridge_slave_0) entered disabled state [ 34.360346] bridge0: port 2(bridge_slave_1) entered disabled state [ 34.367573] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 34.377976] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 34.384773] 8021q: adding VLAN 0 to HW filter on device team0 [ 34.394460] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 34.401962] bridge0: port 1(bridge_slave_0) entered blocking state [ 34.408342] bridge0: port 1(bridge_slave_0) entered forwarding state [ 34.417555] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 34.425543] bridge0: port 2(bridge_slave_1) entered blocking state [ 34.431880] bridge0: port 2(bridge_slave_1) entered forwarding state [ 34.446601] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 34.454205] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 34.465229] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 34.475554] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 34.485828] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 34.496723] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 34.503579] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 34.510746] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 34.523850] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 34.531060] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 34.538014] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 34.548312] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 34.560111] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 34.569876] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 34.598779] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 34.606152] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 34.613891] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 34.623217] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 34.630579] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 34.637721] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 34.646651] device veth0_vlan entered promiscuous mode [ 34.655733] device veth1_vlan entered promiscuous mode [ 34.661942] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 34.670741] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 34.682592] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 34.691414] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 34.699141] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 34.706550] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 34.715723] device veth0_macvtap entered promiscuous mode [ 34.721807] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 34.730356] device veth1_macvtap entered promiscuous mode [ 34.739734] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 34.749051] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 34.759465] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 34.766562] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 34.775972] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 34.785993] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 34.793034] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program executing program executing program executing program [ 34.879084] netlink: 28 bytes leftover after parsing attributes in process `syz-executor112'. [ 34.894519] netlink: 28 bytes leftover after parsing attributes in process `syz-executor112'. [ 34.907996] netlink: 28 bytes leftover after parsing attributes in process `syz-executor112'. executing program executing program executing program executing program [ 34.920868] netlink: 28 bytes leftover after parsing attributes in process `syz-executor112'. [ 34.933905] netlink: 28 bytes leftover after parsing attributes in process `syz-executor112'. [ 34.946461] netlink: 28 bytes leftover after parsing attributes in process `syz-executor112'. [ 34.959310] netlink: 28 bytes leftover after parsing attributes in process `syz-executor112'. executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 34.974790] netlink: 28 bytes leftover after parsing attributes in process `syz-executor112'. [ 34.987284] netlink: 28 bytes leftover after parsing attributes in process `syz-executor112'. [ 35.000335] netlink: 28 bytes leftover after parsing attributes in process `syz-executor112'. [ 35.033931] kasan: CONFIG_KASAN_INLINE enabled [ 35.038594] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 35.046008] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 35.052229] CPU: 0 PID: 8342 Comm: syz-executor112 Not tainted 4.19.211-syzkaller #0 [ 35.060107] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.069447] RIP: 0010:fq_codel_enqueue+0x8ad/0x1100 [ 35.074441] Code: 59 8e ca fa 45 39 ec 0f 83 cb 00 00 00 e8 5b 8d ca fa 48 8b 44 24 10 80 38 00 0f 85 69 06 00 00 49 8b 07 48 89 c2 48 c1 ea 03 <42> 80 3c 32 00 0f 85 3d 06 00 00 48 8b 10 48 8d 78 28 49 89 17 48 [ 35.093319] RSP: 0018:ffff888094b476d0 EFLAGS: 00010246 [ 35.098659] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8697f775 [ 35.105906] RDX: 0000000000000000 RSI: ffffffff8697f815 RDI: 0000000000000004 [ 35.113152] RBP: ffff888094b47890 R08: ffffffff8c665018 R09: 0000000000000400 [ 35.120419] R10: 0000000000000004 R11: ffffffff8c66501b R12: 0000000000000400 [ 35.127680] R13: 0000000000000000 R14: dffffc0000000000 R15: ffff88808b1c0600 [ 35.134929] FS: 0000555556171300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 35.143144] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.149003] CR2: 0000000020000340 CR3: 0000000092640000 CR4: 00000000003406f0 [ 35.156251] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.163846] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.171093] Call Trace: [ 35.173679] ? fq_codel_walk+0x2c0/0x2c0 [ 35.178157] ? __dev_queue_xmit+0x134e/0x2e00 [ 35.182631] __dev_queue_xmit+0x140a/0x2e00 [ 35.186934] ? memcpy+0x35/0x50 [ 35.190190] ? netdev_pick_tx+0x2f0/0x2f0 [ 35.194316] ? __copy_skb_header+0x414/0x500 [ 35.198716] ? kfree_skbmem+0x140/0x140 [ 35.202672] ? skb_clone+0x151/0x3d0 [ 35.206364] ? __skb_clone+0x5ce/0x7c0 [ 35.210228] ? kmem_cache_alloc+0x315/0x370 [ 35.214529] netlink_deliver_tap+0x8fb/0xb00 [ 35.218918] netlink_unicast+0x545/0x690 [ 35.222962] ? netlink_sendskb+0x110/0x110 [ 35.227173] ? _copy_from_iter_full+0x229/0x7c0 [ 35.231824] ? __check_object_size+0x30/0x3e0 [ 35.236302] netlink_sendmsg+0x6c3/0xc50 [ 35.240345] ? aa_af_perm+0x230/0x230 [ 35.244133] ? nlmsg_notify+0x1f0/0x1f0 [ 35.248085] ? kernel_recvmsg+0x220/0x220 [ 35.252213] ? nlmsg_notify+0x1f0/0x1f0 [ 35.256181] sock_sendmsg+0xc3/0x120 [ 35.259876] ___sys_sendmsg+0x7bb/0x8e0 [ 35.263843] ? copy_msghdr_from_user+0x440/0x440 [ 35.268586] ? do_huge_pmd_anonymous_page+0x935/0x1e60 [ 35.273859] ? prep_transhuge_page+0xa0/0xa0 [ 35.278260] ? do_raw_spin_unlock+0x171/0x230 [ 35.282736] ? _raw_spin_unlock+0x29/0x40 [ 35.286878] ? __handle_mm_fault+0xf34/0x41c0 [ 35.291355] ? errseq_sample+0x56/0x70 [ 35.295235] ? vm_insert_page+0x9c0/0x9c0 [ 35.299362] ? __do_page_fault+0x6d1/0xd60 [ 35.303575] ? __fdget+0x1a0/0x230 [ 35.307110] __x64_sys_sendmsg+0x132/0x220 [ 35.311338] ? __sys_sendmsg+0x1b0/0x1b0 [ 35.315382] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 35.320743] ? trace_hardirqs_off_caller+0x6e/0x210 [ 35.325743] ? do_syscall_64+0x21/0x620 [ 35.329696] do_syscall_64+0xf9/0x620 [ 35.333482] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 35.338650] RIP: 0033:0x7ff5b5c01c19 [ 35.342344] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 35.361228] RSP: 002b:00007ffd05134578 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 35.368912] RAX: ffffffffffffffda RBX: 00007ffd051345a0 RCX: 00007ff5b5c01c19 [ 35.376178] RDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000000000006 [ 35.383422] RBP: 0000000000000000 R08: 000000000000000d R09: 000000000000000d [ 35.390673] R10: 000000000000000d R11: 0000000000000246 R12: 00007ffd05134590 [ 35.397919] R13: 00000000000f4240 R14: 00000000000088cf R15: 00007ffd05134584 [ 35.405167] Modules linked in: [ 35.408390] ---[ end trace 395dedf27835a027 ]--- [ 35.413175] RIP: 0010:fq_codel_enqueue+0x8ad/0x1100 [ 35.418187] Code: 59 8e ca fa 45 39 ec 0f 83 cb 00 00 00 e8 5b 8d ca fa 48 8b 44 24 10 80 38 00 0f 85 69 06 00 00 49 8b 07 48 89 c2 48 c1 ea 03 <42> 80 3c 32 00 0f 85 3d 06 00 00 48 8b 10 48 8d 78 28 49 89 17 48 [ 35.437113] RSP: 0018:ffff888094b476d0 EFLAGS: 00010246 [ 35.442521] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8697f775 [ 35.449777] RDX: 0000000000000000 RSI: ffffffff8697f815 RDI: 0000000000000004 [ 35.457073] RBP: ffff888094b47890 R08: ffffffff8c665018 R09: 0000000000000400 [ 35.464360] R10: 0000000000000004 R11: ffffffff8c66501b R12: 0000000000000400 [ 35.471630] R13: 0000000000000000 R14: dffffc0000000000 R15: ffff88808b1c0600 [ 35.478922] FS: 0000555556171300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 35.487179] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.493076] CR2: 0000000020000340 CR3: 0000000092640000 CR4: 00000000003406f0 [ 35.500336] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.507616] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.514906] Kernel panic - not syncing: Fatal exception in interrupt [ 35.521447] Kernel Offset: disabled [ 35.525054] Rebooting in 86400 seconds..