[ 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 '10.128.0.24' (ECDSA) to the list of known hosts. syzkaller login: [ 34.365088] IPVS: ftp: loaded support on port[0] = 21 [ 34.434935] chnl_net:caif_netlink_parms(): no params data found [ 34.524366] bridge0: port 1(bridge_slave_0) entered blocking state [ 34.531251] bridge0: port 1(bridge_slave_0) entered disabled state [ 34.538317] device bridge_slave_0 entered promiscuous mode [ 34.547077] bridge0: port 2(bridge_slave_1) entered blocking state [ 34.553717] bridge0: port 2(bridge_slave_1) entered disabled state [ 34.561146] device bridge_slave_1 entered promiscuous mode [ 34.577662] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 34.586568] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 34.604698] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 34.612174] team0: Port device team_slave_0 added [ 34.617605] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 34.625382] team0: Port device team_slave_1 added [ 34.640576] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 34.646826] 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. [ 34.672675] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 34.684170] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 34.690477] 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. [ 34.715809] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 34.726687] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 34.734401] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 34.754395] device hsr_slave_0 entered promiscuous mode [ 34.760189] device hsr_slave_1 entered promiscuous mode [ 34.766158] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 34.773363] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 34.838002] bridge0: port 2(bridge_slave_1) entered blocking state [ 34.844497] bridge0: port 2(bridge_slave_1) entered forwarding state [ 34.851432] bridge0: port 1(bridge_slave_0) entered blocking state [ 34.857806] bridge0: port 1(bridge_slave_0) entered forwarding state [ 34.890406] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 34.896722] 8021q: adding VLAN 0 to HW filter on device bond0 [ 34.905383] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 34.914988] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 34.923233] bridge0: port 1(bridge_slave_0) entered disabled state [ 34.931060] bridge0: port 2(bridge_slave_1) entered disabled state [ 34.938080] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 34.948465] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 34.954945] 8021q: adding VLAN 0 to HW filter on device team0 [ 34.963587] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 34.971998] bridge0: port 1(bridge_slave_0) entered blocking state [ 34.978345] bridge0: port 1(bridge_slave_0) entered forwarding state [ 34.988018] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 34.996434] bridge0: port 2(bridge_slave_1) entered blocking state [ 35.002841] bridge0: port 2(bridge_slave_1) entered forwarding state [ 35.020870] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 35.028645] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 35.037390] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 35.046474] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 35.057445] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 35.068633] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 35.075438] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 35.089401] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 35.101665] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 35.109056] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 35.115726] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 35.126418] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 35.140777] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 35.150441] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 35.184728] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 35.192437] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 35.199841] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 35.208386] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 35.216725] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 35.223844] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 35.233312] device veth0_vlan entered promiscuous mode [ 35.242323] device veth1_vlan entered promiscuous mode [ 35.248155] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 35.257380] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 35.268328] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 35.277917] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 35.285625] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 35.293410] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 35.303020] device veth0_macvtap entered promiscuous mode [ 35.309617] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 35.317756] device veth1_macvtap entered promiscuous mode [ 35.326800] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 35.336982] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 35.346861] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 35.354208] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 35.362637] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 35.372488] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 35.379534] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 35.555742] BUG: unable to handle kernel paging request at ffff8880bfffd000 [ 35.563031] PGD de01067 P4D de01067 PUD 23ffff067 PMD 23fffe067 PTE 0 [ 35.569663] Oops: 0000 [#1] PREEMPT SMP KASAN [ 35.574143] CPU: 0 PID: 8354 Comm: syz-executor528 Not tainted 4.19.167-syzkaller #0 [ 35.582050] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.591395] RIP: 0010:do_csum+0x177/0x400 [ 35.595540] Code: 89 ee 44 89 6c 24 04 89 04 24 e8 f4 64 52 f9 45 85 ed 74 4e 4d 89 e6 e8 77 63 52 f9 41 83 ed 01 31 ff 31 c0 44 89 ee 49 03 1e <49> 13 5e 08 49 13 5e 10 49 13 5e 18 49 13 5e 20 49 13 5e 28 49 13 [ 35.614422] RSP: 0018:ffff8880ae4bf520 EFLAGS: 00010286 [ 35.619780] RAX: 0000000000000000 RBX: af5422af05211ac9 RCX: ffffffff88126ebb [ 35.627029] RDX: 0000000000000000 RSI: 0000000003ba7bc1 RDI: 0000000000000000 [ 35.634295] RBP: 00000000ffffffec R08: 0000000000000001 R09: 0000000000000000 [ 35.641561] R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880ae9ec0b8 [ 35.648811] R13: 0000000003ba7bc1 R14: ffff8880bfffcff8 R15: 0000000000000000 [ 35.656068] FS: 00007f69360ce700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 35.664336] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.670248] CR2: ffff8880bfffd000 CR3: 00000000a540c000 CR4: 00000000001406f0 [ 35.677589] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.684840] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.692086] Call Trace: [ 35.694686] csum_partial+0x1c/0x30 [ 35.698308] __gre_xmit+0x825/0x8d0 [ 35.701943] ipgre_xmit+0x3fd/0x840 [ 35.705564] dev_hard_start_xmit+0x1a8/0x920 [ 35.709978] __dev_queue_xmit+0x269d/0x2e00 [ 35.714285] ? netdev_pick_tx+0x2f0/0x2f0 [ 35.718419] ? copy_page_from_iter+0x5bd/0x7f0 [ 35.722994] ? skb_copy_datagram_from_iter+0x45f/0x680 [ 35.728254] ? skb_partial_csum_set+0x257/0x2f0 [ 35.732905] packet_sendmsg+0x2474/0x6aff [ 35.737040] ? aa_sk_perm+0x534/0x930 [ 35.740830] ? compat_packet_setsockopt+0x160/0x160 [ 35.745836] ? aa_af_perm+0x230/0x230 [ 35.749674] ? mark_held_locks+0xf0/0xf0 [ 35.753720] ? compat_packet_setsockopt+0x160/0x160 [ 35.758721] sock_sendmsg+0xc3/0x120 [ 35.762418] sock_no_sendpage+0xf5/0x140 [ 35.766471] ? __sk_mem_schedule+0xd0/0xd0 [ 35.770693] ? pipe_lock+0x63/0x80 [ 35.774214] ? __sk_mem_schedule+0xd0/0xd0 [ 35.778436] sock_sendpage+0xdf/0x140 [ 35.782221] pipe_to_sendpage+0x268/0x330 [ 35.786351] ? sockfs_setattr+0x160/0x160 [ 35.790481] ? direct_splice_actor+0x160/0x160 [ 35.795046] ? splice_from_pipe_next.part.0+0x2ad/0x360 [ 35.800392] __splice_from_pipe+0x389/0x800 [ 35.804694] ? direct_splice_actor+0x160/0x160 [ 35.809255] generic_splice_sendpage+0xd4/0x140 [ 35.813922] ? __splice_from_pipe+0x800/0x800 [ 35.818412] ? security_file_permission+0x1c0/0x220 [ 35.823417] ? __splice_from_pipe+0x800/0x800 [ 35.827895] __se_sys_splice+0xfe7/0x16d0 [ 35.832094] ? lock_acquire+0x170/0x3c0 [ 35.836113] ? ret_from_fork+0x8/0x30 [ 35.839912] ? __se_sys_tee+0xb90/0xb90 [ 35.843882] ? trace_hardirqs_off_caller+0x6e/0x210 [ 35.848878] ? do_syscall_64+0x21/0x620 [ 35.852832] do_syscall_64+0xf9/0x620 [ 35.856613] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 35.861797] RIP: 0033:0x448dc9 [ 35.864968] Code: e8 ac 12 03 00 48 83 c4 18 c3 0f 1f 80 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 0f 83 1b 0c fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 35.883859] RSP: 002b:00007f69360cdd88 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 [ 35.891543] RAX: ffffffffffffffda RBX: 00000000006dec78 RCX: 0000000000448dc9 [ 35.899871] RDX: 0000000000000006 RSI: 0000000000000000 RDI: 0000000000000004 [ 35.907122] RBP: 00000000006dec70 R08: 00000000ffffffff R09: 0000000000000000 [ 35.914371] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dec7c [ 35.921642] R13: 00316c6e747a7973 R14: 0000000000000000 R15: 0000000030657267 [ 35.928894] Modules linked in: [ 35.932066] CR2: ffff8880bfffd000 [ 35.935498] ---[ end trace 2b32aa4dbc5ddb9d ]--- [ 35.940254] RIP: 0010:do_csum+0x177/0x400 [ 35.944379] Code: 89 ee 44 89 6c 24 04 89 04 24 e8 f4 64 52 f9 45 85 ed 74 4e 4d 89 e6 e8 77 63 52 f9 41 83 ed 01 31 ff 31 c0 44 89 ee 49 03 1e <49> 13 5e 08 49 13 5e 10 49 13 5e 18 49 13 5e 20 49 13 5e 28 49 13 [ 35.963258] RSP: 0018:ffff8880ae4bf520 EFLAGS: 00010286 [ 35.968615] RAX: 0000000000000000 RBX: af5422af05211ac9 RCX: ffffffff88126ebb [ 35.975862] RDX: 0000000000000000 RSI: 0000000003ba7bc1 RDI: 0000000000000000 [ 35.983109] RBP: 00000000ffffffec R08: 0000000000000001 R09: 0000000000000000 [ 35.990376] R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880ae9ec0b8 [ 35.997908] R13: 0000000003ba7bc1 R14: ffff8880bfffcff8 R15: 0000000000000000 [ 36.005160] FS: 00007f69360ce700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 36.013365] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.019244] CR2: ffff8880bfffd000 CR3: 00000000a540c000 CR4: 00000000001406f0 [ 36.026503] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.033777] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.041033] Kernel panic - not syncing: Fatal exception in interrupt [ 36.047647] Kernel Offset: disabled [ 36.051257] Rebooting in 86400 seconds..