[[0;32m OK [0m] Reached target Graphical Interface.
Starting Update UTMP about System Runlevel Changes...
Starting Load/Save RF Kill Switch Status...
[[0;32m OK [0m] Started Update UTMP about System Runlevel Changes.
[[0;32m OK [0m] Started Load/Save RF Kill Switch Status.
Debian GNU/Linux 9 syzkaller ttyS0
Warning: Permanently added '10.128.0.175' (ECDSA) to the list of known hosts.
syzkaller login: [ 29.110407] IPVS: ftp: loaded support on port[0] = 21
[ 29.175417] chnl_net:caif_netlink_parms(): no params data found
[ 29.246390] bridge0: port 1(bridge_slave_0) entered blocking state
[ 29.253031] bridge0: port 1(bridge_slave_0) entered disabled state
[ 29.260511] device bridge_slave_0 entered promiscuous mode
[ 29.267189] bridge0: port 2(bridge_slave_1) entered blocking state
[ 29.273614] bridge0: port 2(bridge_slave_1) entered disabled state
[ 29.280780] device bridge_slave_1 entered promiscuous mode
[ 29.296383] bond0: Enslaving bond_slave_0 as an active interface with an up link
[ 29.305338] bond0: Enslaving bond_slave_1 as an active interface with an up link
[ 29.323195] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready
[ 29.330373] team0: Port device team_slave_0 added
[ 29.335665] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready
[ 29.342954] team0: Port device team_slave_1 added
[ 29.356619] batman_adv: batadv0: Adding interface: batadv_slave_0
[ 29.363841] 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.
[ 29.389055] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active
[ 29.400203] batman_adv: batadv0: Adding interface: batadv_slave_1
[ 29.406424] 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.
[ 29.431648] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active
[ 29.442716] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready
[ 29.450224] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready
[ 29.467997] device hsr_slave_0 entered promiscuous mode
[ 29.473561] device hsr_slave_1 entered promiscuous mode
[ 29.479665] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready
[ 29.486553] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready
[ 29.543629] bridge0: port 2(bridge_slave_1) entered blocking state
[ 29.550108] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 29.556866] bridge0: port 1(bridge_slave_0) entered blocking state
[ 29.563295] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 29.589015] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready
[ 29.595087] 8021q: adding VLAN 0 to HW filter on device bond0
[ 29.604625] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready
[ 29.613281] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[ 29.621115] bridge0: port 1(bridge_slave_0) entered disabled state
[ 29.638446] bridge0: port 2(bridge_slave_1) entered disabled state
[ 29.649305] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready
[ 29.655361] 8021q: adding VLAN 0 to HW filter on device team0
[ 29.663620] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[ 29.671556] bridge0: port 1(bridge_slave_0) entered blocking state
[ 29.677946] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 29.686414] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[ 29.694433] bridge0: port 2(bridge_slave_1) entered blocking state
[ 29.700808] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 29.718015] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready
[ 29.725469] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready
[ 29.733337] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
[ 29.741147] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
[ 29.749426] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready
[ 29.757400] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready
[ 29.764447] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready
[ 29.776932] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready
[ 29.784224] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
[ 29.791274] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
[ 29.800870] 8021q: adding VLAN 0 to HW filter on device batadv0
[ 29.848002] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready
[ 29.856874] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready
[ 29.880317] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready
[ 29.888440] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready
[ 29.894833] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready
[ 29.903593] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready
[ 29.911697] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready
[ 29.919240] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready
[ 29.928085] device veth0_vlan entered promiscuous mode
[ 29.936381] device veth1_vlan entered promiscuous mode
[ 29.942876] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready
[ 29.951394] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready
[ 29.962572] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready
[ 29.971961] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready
[ 29.979819] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready
[ 29.986910] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready
[ 29.996295] device veth0_macvtap entered promiscuous mode
[ 30.002782] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready
[ 30.010904] device veth1_macvtap entered promiscuous mode
[ 30.019696] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready
[ 30.028869] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready
[ 30.038290] batman_adv: batadv0: Interface activated: batadv_slave_0
[ 30.044959] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
[ 30.053995] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready
[ 30.063287] batman_adv: batadv0: Interface activated: batadv_slave_1
[ 30.069982] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
executing program
[ 30.140355] IPv6: ADDRCONF(NETDEV_UP): ipvlan1: link is not ready
[ 30.147022] ==================================================================
[ 30.154488] BUG: KASAN: use-after-free in ipvlan_queue_xmit+0x1323/0x15a0
[ 30.161412] Read of size 4 at addr ffff88809f62453f by task syz-executor996/8001
[ 30.167834] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready
[ 30.168919]
[ 30.168928] CPU: 1 PID: 8001 Comm: syz-executor996 Not tainted 4.14.206-syzkaller #0
[ 30.176032] IPv6: ADDRCONF(NETDEV_CHANGE): ipvlan1: link becomes ready
[ 30.177010] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 30.177013] Call Trace:
[ 30.177025] dump_stack+0x1b2/0x283
[ 30.177038] print_address_description.cold+0x54/0x1d3
[ 30.177047] kasan_report_error.cold+0x8a/0x194
[ 30.177054] ? ipvlan_queue_xmit+0x1323/0x15a0
[ 30.177060] __asan_report_load4_noabort+0x68/0x70
[ 30.177068] ? ipvlan_queue_xmit+0x1323/0x15a0
[ 30.177074] ipvlan_queue_xmit+0x1323/0x15a0
[ 30.177085] ? ipvlan_process_multicast+0xb80/0xb80
[ 30.240667] ? skb_network_protocol+0xdc/0x430
[ 30.245229] ? netif_skb_features+0x4ed/0x9f0
[ 30.249720] ? __skb_gso_segment+0x600/0x600
[ 30.254108] ? validate_xmit_xfrm+0x346/0x4d0
[ 30.258587] ? validate_xmit_skb+0x669/0x9f0
[ 30.262993] ipvlan_start_xmit+0x4f/0x180
[ 30.267130] ? packet_direct_xmit+0x1f0/0x610
[ 30.271615] packet_direct_xmit+0x410/0x610
[ 30.276001] packet_snd+0x1393/0x21e0
[ 30.279802] ? prb_retire_rx_blk_timer_expired+0x630/0x630
[ 30.285409] ? __lock_acquire+0x5fc/0x3f20
[ 30.289624] packet_sendmsg+0x1139/0x2aca
[ 30.293749] ? trace_hardirqs_on+0x10/0x10
[ 30.297961] ? trace_hardirqs_on+0x10/0x10
[ 30.302169] ? trace_hardirqs_on+0x10/0x10
[ 30.306390] ? trace_hardirqs_on+0x10/0x10
[ 30.310605] ? reacquire_held_locks+0xb5/0x3f0
[ 30.315165] ? compat_packet_setsockopt+0x140/0x140
[ 30.320246] ? __register_prot_hook.part.0+0x115/0x150
[ 30.325515] ? packet_do_bind+0x3df/0xaf0
[ 30.329643] ? security_socket_sendmsg+0x83/0xb0
[ 30.334375] ? compat_packet_setsockopt+0x140/0x140
[ 30.339370] sock_sendmsg+0xb5/0x100
[ 30.343074] SyS_sendto+0x1c7/0x2c0
[ 30.346683] ? SyS_getpeername+0x220/0x220
[ 30.350910] ? SyS_socketpair+0x480/0x480
[ 30.355042] ? SyS_socket+0x12f/0x1b0
[ 30.358825] ? security_file_ioctl+0x83/0xb0
[ 30.363213] ? do_syscall_64+0x4c/0x640
[ 30.367170] ? SyS_getpeername+0x220/0x220
[ 30.371391] do_syscall_64+0x1d5/0x640
[ 30.375371] entry_SYSCALL_64_after_hwframe+0x46/0xbb
[ 30.380538] RIP: 0033:0x444a29
[ 30.383704] RSP: 002b:00007ffc76122098 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[ 30.391388] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000444a29
[ 30.398676] RDX: 000000000000000e RSI: 0000000020000000 RDI: 0000000000000004
[ 30.405927] RBP: 00007ffc761220c0 R08: 0000000000000000 R09: ffffffffffffff09
[ 30.413178] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc761220d0
[ 30.420686] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[ 30.427945]
[ 30.429558] Allocated by task 1:
[ 30.432906] kasan_kmalloc+0xeb/0x160
[ 30.436682] kmem_cache_alloc+0x124/0x3c0
[ 30.440807] getname_flags+0xc8/0x550
[ 30.444582] user_path_at_empty+0x2a/0x50
[ 30.448725] vfs_statx+0xd1/0x180
[ 30.452161] SyS_newlstat+0x83/0xe0
[ 30.455776] do_syscall_64+0x1d5/0x640
[ 30.459928] entry_SYSCALL_64_after_hwframe+0x46/0xbb
[ 30.465090]
[ 30.466695] Freed by task 1:
[ 30.473959] kasan_slab_free+0xc3/0x1a0
[ 30.477917] kmem_cache_free+0x7c/0x2b0
[ 30.481866] putname+0xcd/0x110
[ 30.485121] filename_lookup+0x37b/0x510
[ 30.489211] vfs_statx+0xd1/0x180
[ 30.492647] SyS_newlstat+0x83/0xe0
[ 30.496263] do_syscall_64+0x1d5/0x640
[ 30.500130] entry_SYSCALL_64_after_hwframe+0x46/0xbb
[ 30.505292]
[ 30.506910] The buggy address belongs to the object at ffff88809f624440
[ 30.506910] which belongs to the cache names_cache of size 4096
[ 30.519674] The buggy address is located 255 bytes inside of
[ 30.519674] 4096-byte region [ffff88809f624440, ffff88809f625440)
[ 30.531611] The buggy address belongs to the page:
[ 30.536515] page:ffffea00027d8900 count:1 mapcount:0 mapping:ffff88809f624440 index:0x0 compound_mapcount: 0
[ 30.546460] flags: 0xfff00000008100(slab|head)
[ 30.551023] raw: 00fff00000008100 ffff88809f624440 0000000000000000 0000000100000001
[ 30.558877] raw: ffffea00027d2720 ffffea00027c19a0 ffff88823f8bb200 0000000000000000
[ 30.566729] page dumped because: kasan: bad access detected
[ 30.572412]
[ 30.574013] Memory state around the buggy address:
[ 30.578915] ffff88809f624400: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb
[ 30.586246] ffff88809f624480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 30.593591] >ffff88809f624500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 30.600923] ^
[ 30.606096] ffff88809f624580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 30.613444] ffff88809f624600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 30.620774] ==================================================================
[ 30.628119] Disabling lock debugging due to kernel taint
[ 30.633635] Kernel panic - not syncing: panic_on_warn set ...
[ 30.633635]
[ 30.640988] CPU: 1 PID: 8001 Comm: syz-executor996 Tainted: G B 4.14.206-syzkaller #0
[ 30.650068] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 30.659404] Call Trace:
[ 30.661967] dump_stack+0x1b2/0x283
[ 30.665567] panic+0x1f9/0x42d
[ 30.668732] ? add_taint.cold+0x16/0x16
[ 30.672681] kasan_end_report+0x43/0x49
[ 30.676628] kasan_report_error.cold+0xa7/0x194
[ 30.681269] ? ipvlan_queue_xmit+0x1323/0x15a0
[ 30.685840] __asan_report_load4_noabort+0x68/0x70
[ 30.690743] ? ipvlan_queue_xmit+0x1323/0x15a0
[ 30.695296] ipvlan_queue_xmit+0x1323/0x15a0
[ 30.699683] ? ipvlan_process_multicast+0xb80/0xb80
[ 30.704675] ? skb_network_protocol+0xdc/0x430
[ 30.709234] ? netif_skb_features+0x4ed/0x9f0
[ 30.713703] ? __skb_gso_segment+0x600/0x600
[ 30.718090] ? validate_xmit_xfrm+0x346/0x4d0
[ 30.722557] ? validate_xmit_skb+0x669/0x9f0
[ 30.726958] ipvlan_start_xmit+0x4f/0x180
[ 30.731094] ? packet_direct_xmit+0x1f0/0x610
[ 30.735562] packet_direct_xmit+0x410/0x610
[ 30.739858] packet_snd+0x1393/0x21e0
[ 30.743632] ? prb_retire_rx_blk_timer_expired+0x630/0x630
[ 30.749232] ? __lock_acquire+0x5fc/0x3f20
[ 30.753439] packet_sendmsg+0x1139/0x2aca
[ 30.757561] ? trace_hardirqs_on+0x10/0x10
[ 30.761781] ? trace_hardirqs_on+0x10/0x10
[ 30.765985] ? trace_hardirqs_on+0x10/0x10
[ 30.770191] ? trace_hardirqs_on+0x10/0x10
[ 30.774396] ? reacquire_held_locks+0xb5/0x3f0
[ 30.778955] ? compat_packet_setsockopt+0x140/0x140
[ 30.783944] ? __register_prot_hook.part.0+0x115/0x150
[ 30.789221] ? packet_do_bind+0x3df/0xaf0
[ 30.793354] ? security_socket_sendmsg+0x83/0xb0
[ 30.798085] ? compat_packet_setsockopt+0x140/0x140
[ 30.803074] sock_sendmsg+0xb5/0x100
[ 30.806766] SyS_sendto+0x1c7/0x2c0
[ 30.810371] ? SyS_getpeername+0x220/0x220
[ 30.814579] ? SyS_socketpair+0x480/0x480
[ 30.818701] ? SyS_socket+0x12f/0x1b0
[ 30.822472] ? security_file_ioctl+0x83/0xb0
[ 30.826857] ? do_syscall_64+0x4c/0x640
[ 30.830825] ? SyS_getpeername+0x220/0x220
[ 30.835040] do_syscall_64+0x1d5/0x640
[ 30.838914] entry_SYSCALL_64_after_hwframe+0x46/0xbb
[ 30.844074] RIP: 0033:0x444a29
[ 30.847237] RSP: 002b:00007ffc76122098 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[ 30.854916] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000444a29
[ 30.862176] RDX: 000000000000000e RSI: 0000000020000000 RDI: 0000000000000004
[ 30.869420] RBP: 00007ffc761220c0 R08: 0000000000000000 R09: ffffffffffffff09
[ 30.876662] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc761220d0
[ 30.883929] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[ 30.891879] Kernel Offset: disabled
[ 30.895484] Rebooting in 86400 seconds..