Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.188' (ECDSA) to the list of known hosts. syzkaller login: [ 33.144520] IPVS: ftp: loaded support on port[0] = 21 [ 33.213269] chnl_net:caif_netlink_parms(): no params data found [ 33.316061] bridge0: port 1(bridge_slave_0) entered blocking state [ 33.322912] bridge0: port 1(bridge_slave_0) entered disabled state [ 33.330973] device bridge_slave_0 entered promiscuous mode [ 33.338845] bridge0: port 2(bridge_slave_1) entered blocking state [ 33.345221] bridge0: port 2(bridge_slave_1) entered disabled state [ 33.353306] device bridge_slave_1 entered promiscuous mode [ 33.371295] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 33.380219] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 33.399806] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 33.407693] team0: Port device team_slave_0 added [ 33.413755] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 33.421574] team0: Port device team_slave_1 added [ 33.437363] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 33.443755] 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. [ 33.469325] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 33.480675] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 33.486998] 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. [ 33.512272] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 33.523153] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 33.530917] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 33.549823] device hsr_slave_0 entered promiscuous mode [ 33.555511] device hsr_slave_1 entered promiscuous mode [ 33.561846] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 33.569098] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 33.631975] bridge0: port 2(bridge_slave_1) entered blocking state [ 33.638406] bridge0: port 2(bridge_slave_1) entered forwarding state [ 33.645174] bridge0: port 1(bridge_slave_0) entered blocking state [ 33.651590] bridge0: port 1(bridge_slave_0) entered forwarding state [ 33.682786] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 33.690347] 8021q: adding VLAN 0 to HW filter on device bond0 [ 33.699215] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 33.708446] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 33.717257] bridge0: port 1(bridge_slave_0) entered disabled state [ 33.724316] bridge0: port 2(bridge_slave_1) entered disabled state [ 33.732086] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 33.742845] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 33.749436] 8021q: adding VLAN 0 to HW filter on device team0 [ 33.760098] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 33.768173] bridge0: port 1(bridge_slave_0) entered blocking state [ 33.774493] bridge0: port 1(bridge_slave_0) entered forwarding state [ 33.784114] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 33.792190] bridge0: port 2(bridge_slave_1) entered blocking state [ 33.798571] bridge0: port 2(bridge_slave_1) entered forwarding state [ 33.817351] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 33.824997] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 33.833607] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 33.841246] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 33.850434] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 33.859154] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 33.865150] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 33.878971] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 33.887600] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 33.894235] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 33.907643] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 33.919176] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 33.928775] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 33.962191] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 33.969489] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 33.977216] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 33.986592] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 33.994014] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 34.001836] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 34.014019] device veth0_vlan entered promiscuous mode [ 34.023965] device veth1_vlan entered promiscuous mode [ 34.030696] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 34.040527] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 34.051850] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 34.061778] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 34.069529] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 34.077562] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 34.087778] device veth0_macvtap entered promiscuous mode [ 34.093882] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 34.102720] device veth1_macvtap entered promiscuous mode [ 34.111901] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 34.122106] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 34.132494] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 34.140311] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 34.149089] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 34.161528] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 34.168713] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 34.257692] kasan: CONFIG_KASAN_INLINE enabled [ 34.262339] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 34.269913] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 34.276173] CPU: 0 PID: 8103 Comm: syz-executor282 Not tainted 4.19.211-syzkaller #0 [ 34.284044] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.293389] RIP: 0010:__list_del_entry_valid+0x81/0xf0 [ 34.298648] Code: 0f 84 30 52 85 04 48 b8 00 02 00 00 00 00 ad de 49 39 c4 0f 84 31 52 85 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 e8 51 85 04 49 8d 7d [ 34.317529] RSP: 0018:ffff888091eb74e8 EFLAGS: 00010246 [ 34.322873] RAX: dffffc0000000000 RBX: ffff8880b36ae000 RCX: ffffffff814bdebb [ 34.330121] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8880b36ae328 [ 34.337367] RBP: ffff8880b36ae320 R08: 0000000000000001 R09: fffffbfff15cead8 [ 34.344752] R10: ffffffff8ae756c3 R11: 0000000000000000 R12: 0000000000000000 [ 34.352151] R13: 0000000000000000 R14: ffff8880b36ae280 R15: ffff8880b36ae328 [ 34.359402] FS: 0000555556957300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 34.367604] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.373466] CR2: 0000000020000600 CR3: 00000000b5270000 CR4: 00000000003406f0 [ 34.380714] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.387960] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.395204] Call Trace: [ 34.397778] cbs_destroy+0x81/0x280 [ 34.401389] ? cbs_init+0x244/0x420 [ 34.404994] ? cbs_dequeue_soft+0x810/0x810 [ 34.409300] qdisc_create+0xb70/0x1130 [ 34.413168] ? qdisc_tree_reduce_backlog+0x5d0/0x5d0 [ 34.418259] ? nla_parse+0x1b2/0x290 [ 34.422733] tc_modify_qdisc+0x50d/0x1a80 [ 34.426925] ? apparmor_capable+0x147/0x750 [ 34.431233] ? tc_get_qdisc+0xb60/0xb60 [ 34.435184] ? rtnetlink_rcv_msg+0x3fe/0xb80 [ 34.439574] ? tc_get_qdisc+0xb60/0xb60 [ 34.443528] rtnetlink_rcv_msg+0x453/0xb80 [ 34.447757] ? rtnl_calcit.isra.0+0x430/0x430 [ 34.452234] ? memcpy+0x35/0x50 [ 34.455494] ? netdev_pick_tx+0x2f0/0x2f0 [ 34.459638] ? __copy_skb_header+0x414/0x500 [ 34.464063] ? kfree_skbmem+0x140/0x140 [ 34.468117] netlink_rcv_skb+0x160/0x440 [ 34.472158] ? rtnl_calcit.isra.0+0x430/0x430 [ 34.476632] ? netlink_ack+0xae0/0xae0 [ 34.480538] netlink_unicast+0x4d5/0x690 [ 34.484579] ? netlink_sendskb+0x110/0x110 [ 34.488798] ? _copy_from_iter_full+0x229/0x7c0 [ 34.493449] ? __phys_addr_symbol+0x2c/0x70 [ 34.497760] ? __check_object_size+0x17b/0x3e0 [ 34.502322] netlink_sendmsg+0x6c3/0xc50 [ 34.506364] ? aa_af_perm+0x230/0x230 [ 34.510148] ? nlmsg_notify+0x1f0/0x1f0 [ 34.514104] ? kernel_recvmsg+0x220/0x220 [ 34.518232] ? nlmsg_notify+0x1f0/0x1f0 [ 34.522184] sock_sendmsg+0xc3/0x120 [ 34.525875] ___sys_sendmsg+0x7bb/0x8e0 [ 34.530003] ? copy_msghdr_from_user+0x440/0x440 [ 34.534737] ? do_huge_pmd_anonymous_page+0x935/0x1e60 [ 34.539993] ? sock_ioctl+0x30e/0x5d0 [ 34.543770] ? dlci_ioctl_set+0x30/0x30 [ 34.547726] ? _raw_spin_unlock+0x29/0x40 [ 34.551855] ? __handle_mm_fault+0xf34/0x41c0 [ 34.556329] ? dlci_ioctl_set+0x30/0x30 [ 34.560285] ? do_vfs_ioctl+0x110/0x12e0 [ 34.564326] ? ioctl_preallocate+0x200/0x200 [ 34.568718] ? __do_page_fault+0x6d1/0xd60 [ 34.572940] ? __fdget+0x1a0/0x230 [ 34.576462] __x64_sys_sendmsg+0x132/0x220 [ 34.580675] ? __sys_sendmsg+0x1b0/0x1b0 [ 34.584718] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 34.590076] ? trace_hardirqs_off_caller+0x6e/0x210 [ 34.595074] ? do_syscall_64+0x21/0x620 [ 34.599039] do_syscall_64+0xf9/0x620 [ 34.602820] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 34.607989] RIP: 0033:0x7f254db393f9 [ 34.611769] 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 [ 34.630649] RSP: 002b:00007fff54b42e28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 34.638594] RAX: ffffffffffffffda RBX: 00007fff54b42e38 RCX: 00007f254db393f9 [ 34.645841] RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000003 [ 34.653095] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 34.660343] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff54b42e40 [ 34.667591] R13: 00007fff54b42e60 R14: 0000000000000000 R15: 0000000000000000 [ 34.674850] Modules linked in: [ 34.678084] ---[ end trace 20e0c332498caafc ]--- [ 34.682850] RIP: 0010:__list_del_entry_valid+0x81/0xf0 [ 34.688163] Code: 0f 84 30 52 85 04 48 b8 00 02 00 00 00 00 ad de 49 39 c4 0f 84 31 52 85 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 e8 51 85 04 49 8d 7d [ 34.707098] RSP: 0018:ffff888091eb74e8 EFLAGS: 00010246 [ 34.712491] RAX: dffffc0000000000 RBX: ffff8880b36ae000 RCX: ffffffff814bdebb [ 34.719871] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8880b36ae328 [ 34.727172] RBP: ffff8880b36ae320 R08: 0000000000000001 R09: fffffbfff15cead8 [ 34.734430] R10: ffffffff8ae756c3 R11: 0000000000000000 R12: 0000000000000000 [ 34.741727] R13: 0000000000000000 R14: ffff8880b36ae280 R15: ffff8880b36ae328 [ 34.749025] FS: 0000555556957300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 34.757274] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.763146] CR2: 0000000020000600 CR3: 00000000b5270000 CR4: 00000000003406f0 [ 34.770432] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.777729] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.784991] Kernel panic - not syncing: Fatal exception [ 34.790493] Kernel Offset: disabled [ 34.794102] Rebooting in 86400 seconds..