[ 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 '10.128.1.26' (ECDSA) to the list of known hosts. syzkaller login: [ 37.462595] IPVS: ftp: loaded support on port[0] = 21 [ 37.533832] chnl_net:caif_netlink_parms(): no params data found [ 37.633410] bridge0: port 1(bridge_slave_0) entered blocking state [ 37.640164] bridge0: port 1(bridge_slave_0) entered disabled state [ 37.648206] device bridge_slave_0 entered promiscuous mode [ 37.656263] bridge0: port 2(bridge_slave_1) entered blocking state [ 37.662640] bridge0: port 2(bridge_slave_1) entered disabled state [ 37.670302] device bridge_slave_1 entered promiscuous mode [ 37.688326] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 37.697090] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 37.715267] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 37.722976] team0: Port device team_slave_0 added [ 37.729748] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 37.737479] team0: Port device team_slave_1 added [ 37.752921] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 37.759552] 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. [ 37.786242] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 37.798256] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 37.805226] 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. [ 37.831211] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 37.842368] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 37.850807] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 37.870253] device hsr_slave_0 entered promiscuous mode [ 37.876139] device hsr_slave_1 entered promiscuous mode [ 37.882253] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 37.891163] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 37.956698] bridge0: port 2(bridge_slave_1) entered blocking state [ 37.963097] bridge0: port 2(bridge_slave_1) entered forwarding state [ 37.969927] bridge0: port 1(bridge_slave_0) entered blocking state [ 37.976378] bridge0: port 1(bridge_slave_0) entered forwarding state [ 38.007685] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 38.013960] 8021q: adding VLAN 0 to HW filter on device bond0 [ 38.025598] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 38.033956] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 38.043121] bridge0: port 1(bridge_slave_0) entered disabled state [ 38.050930] bridge0: port 2(bridge_slave_1) entered disabled state [ 38.058349] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 38.069064] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 38.075502] 8021q: adding VLAN 0 to HW filter on device team0 [ 38.086737] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 38.094397] bridge0: port 1(bridge_slave_0) entered blocking state [ 38.100723] bridge0: port 1(bridge_slave_0) entered forwarding state [ 38.110748] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 38.119403] bridge0: port 2(bridge_slave_1) entered blocking state [ 38.125900] bridge0: port 2(bridge_slave_1) entered forwarding state [ 38.145494] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 38.153260] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 38.161811] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 38.169851] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 38.179536] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 38.189383] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 38.196206] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 38.209308] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 38.217913] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 38.225872] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 38.236919] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 38.249859] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 38.260665] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 38.294579] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 38.301790] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 38.309125] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 38.318573] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 38.328097] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 38.335416] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 38.345718] device veth0_vlan entered promiscuous mode [ 38.355850] device veth1_vlan entered promiscuous mode [ 38.362385] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 38.372293] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 38.385304] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 38.395689] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 38.405291] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 38.412732] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 38.424898] device veth0_macvtap entered promiscuous mode [ 38.431336] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 38.441567] device veth1_macvtap entered promiscuous mode [ 38.451052] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 38.461765] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 38.471879] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 38.479226] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 38.488241] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 38.498939] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 38.507426] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 38.596762] kasan: CONFIG_KASAN_INLINE enabled [ 38.601446] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 38.609180] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 38.615507] CPU: 0 PID: 8103 Comm: syz-executor766 Not tainted 4.19.199-syzkaller #0 [ 38.623829] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 38.633448] RIP: 0010:__list_del_entry_valid+0x81/0xf0 [ 38.639258] Code: 0f 84 c0 f4 84 04 48 b8 00 02 00 00 00 00 ad de 49 39 c4 0f 84 c1 f4 84 04 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 75 51 49 8b 14 24 48 39 ea 0f 85 78 f4 84 04 49 8d 7d [ 38.659027] RSP: 0018:ffff88809629f4e8 EFLAGS: 00010246 [ 38.664484] RAX: dffffc0000000000 RBX: ffff888094aa84c0 RCX: ffffffff814bdcab [ 38.671818] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888094aa87e8 [ 38.679244] RBP: ffff888094aa87e0 R08: 0000000000000001 R09: fffffbfff15ce98c [ 38.686591] R10: ffffffff8ae74c63 R11: 0000000000000000 R12: 0000000000000000 [ 38.694056] R13: 0000000000000000 R14: ffff888094aa8740 R15: ffff888094aa87e8 [ 38.701876] FS: 00000000007fe300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 38.711416] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 38.717463] CR2: 0000000020000600 CR3: 0000000097e34000 CR4: 00000000001406f0 [ 38.724804] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 38.732236] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 38.739619] Call Trace: [ 38.742197] cbs_destroy+0x81/0x280 [ 38.745819] ? cbs_init+0x244/0x420 [ 38.749441] ? cbs_dequeue_soft+0x810/0x810 [ 38.753839] qdisc_create+0xb70/0x1130 [ 38.757731] ? qdisc_tree_reduce_backlog+0x5d0/0x5d0 [ 38.762823] ? nla_parse+0x1b2/0x290 [ 38.766528] tc_modify_qdisc+0x50d/0x1a80 [ 38.770664] ? apparmor_capable+0x147/0x750 [ 38.775209] ? tc_get_qdisc+0xb60/0xb60 [ 38.779335] ? rtnetlink_rcv_msg+0x3fe/0xb80 [ 38.784006] ? tc_get_qdisc+0xb60/0xb60 [ 38.787971] rtnetlink_rcv_msg+0x453/0xb80 [ 38.792322] ? rtnl_calcit.isra.0+0x430/0x430 [ 38.796890] ? memcpy+0x35/0x50 [ 38.800242] ? netdev_pick_tx+0x2f0/0x2f0 [ 38.804465] ? __copy_skb_header+0x414/0x500 [ 38.808980] ? kfree_skbmem+0x140/0x140 [ 38.812954] netlink_rcv_skb+0x160/0x440 [ 38.817005] ? rtnl_calcit.isra.0+0x430/0x430 [ 38.821485] ? netlink_ack+0xae0/0xae0 [ 38.825386] netlink_unicast+0x4d5/0x690 [ 38.829443] ? netlink_sendskb+0x110/0x110 [ 38.833690] ? _copy_from_iter_full+0x229/0x7c0 [ 38.838353] ? __phys_addr_symbol+0x2c/0x70 [ 38.842971] ? __check_object_size+0x17b/0x3e0 [ 38.847892] netlink_sendmsg+0x6bb/0xc40 [ 38.852026] ? aa_af_perm+0x230/0x230 [ 38.855832] ? nlmsg_notify+0x1a0/0x1a0 [ 38.860085] ? kernel_recvmsg+0x220/0x220 [ 38.864331] ? nlmsg_notify+0x1a0/0x1a0 [ 38.868293] sock_sendmsg+0xc3/0x120 [ 38.872439] ___sys_sendmsg+0x7bb/0x8e0 [ 38.876758] ? copy_msghdr_from_user+0x440/0x440 [ 38.881707] ? do_huge_pmd_anonymous_page+0x935/0x1e60 [ 38.886974] ? sock_ioctl+0x30e/0x5d0 [ 38.890765] ? dlci_ioctl_set+0x30/0x30 [ 38.895474] ? mark_held_locks+0xf0/0xf0 [ 38.899642] ? __handle_mm_fault+0xf34/0x41c0 [ 38.904131] ? dlci_ioctl_set+0x30/0x30 [ 38.908090] ? do_vfs_ioctl+0x110/0x12e0 [ 38.912133] ? ioctl_preallocate+0x200/0x200 [ 38.916729] ? __do_page_fault+0x6d1/0xd60 [ 38.921086] ? __fdget+0x1a0/0x230 [ 38.924903] __x64_sys_sendmsg+0x132/0x220 [ 38.929248] ? __sys_sendmsg+0x1b0/0x1b0 [ 38.933487] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 38.939597] ? trace_hardirqs_off_caller+0x6e/0x210 [ 38.944963] ? do_syscall_64+0x21/0x620 [ 38.948919] do_syscall_64+0xf9/0x620 [ 38.952710] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 38.957885] RIP: 0033:0x443299 [ 38.961059] Code: 28 c3 e8 4a 15 00 00 66 2e 0f 1f 84 00 00 00 00 00 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 [ 38.980461] RSP: 002b:00007ffccc521c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 38.988255] RAX: ffffffffffffffda RBX: 00007ffccc521c88 RCX: 0000000000443299 [ 38.996007] RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000004 [ 39.003458] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 39.010715] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffccc521c90 [ 39.018084] R13: 00007ffccc521cb0 R14: 00000000004b8018 R15: 00000000004004b8 [ 39.025348] Modules linked in: [ 39.029600] ---[ end trace feda66f48966a124 ]--- [ 39.034412] RIP: 0010:__list_del_entry_valid+0x81/0xf0 [ 39.039690] Code: 0f 84 c0 f4 84 04 48 b8 00 02 00 00 00 00 ad de 49 39 c4 0f 84 c1 f4 84 04 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 75 51 49 8b 14 24 48 39 ea 0f 85 78 f4 84 04 49 8d 7d [ 39.058892] RSP: 0018:ffff88809629f4e8 EFLAGS: 00010246 [ 39.064323] RAX: dffffc0000000000 RBX: ffff888094aa84c0 RCX: ffffffff814bdcab [ 39.071681] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888094aa87e8 [ 39.079106] RBP: ffff888094aa87e0 R08: 0000000000000001 R09: fffffbfff15ce98c [ 39.086414] R10: ffffffff8ae74c63 R11: 0000000000000000 R12: 0000000000000000 [ 39.094109] R13: 0000000000000000 R14: ffff888094aa8740 R15: ffff888094aa87e8 [ 39.101380] FS: 00000000007fe300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 39.109943] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 39.115981] CR2: 0000000020000600 CR3: 0000000097e34000 CR4: 00000000001406f0 [ 39.123253] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 39.130857] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 39.138200] Kernel panic - not syncing: Fatal exception [ 39.145202] Kernel Offset: disabled [ 39.148834] Rebooting in 86400 seconds..