[ 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 '10.128.0.95' (ECDSA) to the list of known hosts. syzkaller login: [ 43.568138] IPVS: ftp: loaded support on port[0] = 21 [ 43.638222] chnl_net:caif_netlink_parms(): no params data found [ 43.727779] bridge0: port 1(bridge_slave_0) entered blocking state [ 43.734696] bridge0: port 1(bridge_slave_0) entered disabled state [ 43.743056] device bridge_slave_0 entered promiscuous mode [ 43.750495] bridge0: port 2(bridge_slave_1) entered blocking state [ 43.757264] bridge0: port 2(bridge_slave_1) entered disabled state [ 43.765204] device bridge_slave_1 entered promiscuous mode [ 43.783168] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 43.791964] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 43.810107] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 43.818298] team0: Port device team_slave_0 added [ 43.824165] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 43.832294] team0: Port device team_slave_1 added [ 43.847453] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 43.854380] 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. [ 43.880760] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 43.892321] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 43.898762] 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. [ 43.924362] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 43.935131] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 43.942871] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 43.962337] device hsr_slave_0 entered promiscuous mode [ 43.968080] device hsr_slave_1 entered promiscuous mode [ 43.974516] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 43.981915] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 44.046266] bridge0: port 2(bridge_slave_1) entered blocking state [ 44.052816] bridge0: port 2(bridge_slave_1) entered forwarding state [ 44.059683] bridge0: port 1(bridge_slave_0) entered blocking state [ 44.066129] bridge0: port 1(bridge_slave_0) entered forwarding state [ 44.097809] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 44.105621] 8021q: adding VLAN 0 to HW filter on device bond0 [ 44.114395] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 44.123905] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 44.132691] bridge0: port 1(bridge_slave_0) entered disabled state [ 44.139697] bridge0: port 2(bridge_slave_1) entered disabled state [ 44.147249] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 44.157463] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 44.164295] 8021q: adding VLAN 0 to HW filter on device team0 [ 44.173881] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 44.181978] bridge0: port 1(bridge_slave_0) entered blocking state [ 44.188325] bridge0: port 1(bridge_slave_0) entered forwarding state [ 44.198420] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 44.206468] bridge0: port 2(bridge_slave_1) entered blocking state [ 44.212858] bridge0: port 2(bridge_slave_1) entered forwarding state [ 44.232616] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 44.240944] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 44.248552] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 44.256488] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 44.267108] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 44.276361] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 44.282991] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 44.296649] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 44.304423] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 44.311622] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 44.321954] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 44.334867] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 44.344178] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 44.378667] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 44.385838] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 44.393443] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 44.403043] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 44.410912] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 44.417803] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 44.426646] device veth0_vlan entered promiscuous mode [ 44.435696] device veth1_vlan entered promiscuous mode [ 44.441997] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 44.450255] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 44.461990] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 44.472243] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 44.479676] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 44.487535] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 44.497317] device veth0_macvtap entered promiscuous mode [ 44.504480] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 44.513253] device veth1_macvtap entered promiscuous mode [ 44.523108] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 44.532706] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 44.544959] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 44.551796] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 44.560114] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 44.570945] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 44.580984] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 44.677656] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2020/09/19 18:44 (1000) executing program [ 45.034393] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2020/09/19 18:44 (1000) executing program [ 45.372341] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2020/09/19 18:44 (1000) executing program [ 45.764873] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2020/09/19 18:44 (1000) [ 45.957628] ------------[ cut here ]------------ [ 45.962855] WARNING: CPU: 0 PID: 8330 at fs/udf/truncate.c:226 udf_truncate_extents.cold+0x11/0x18 [ 45.971966] Kernel panic - not syncing: panic_on_warn set ... [ 45.971966] [ 45.979341] CPU: 0 PID: 8330 Comm: syz-executor677 Not tainted 4.19.208-syzkaller #0 [ 45.987228] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.996584] Call Trace: [ 45.999189] dump_stack+0x1fc/0x2ef [ 46.002831] panic+0x26a/0x50e [ 46.006036] ? __warn_printk+0xf3/0xf3 [ 46.009938] ? udf_truncate_extents.cold+0x11/0x18 [ 46.014884] ? __probe_kernel_read+0x130/0x1b0 [ 46.019479] ? __warn.cold+0x5/0x5a [ 46.023111] ? __warn+0xe4/0x200 [ 46.026491] ? udf_truncate_extents.cold+0x11/0x18 [ 46.031428] __warn.cold+0x20/0x5a [ 46.034973] ? io_schedule_timeout+0x140/0x140 [ 46.039557] ? udf_truncate_extents.cold+0x11/0x18 [ 46.044512] report_bug+0x262/0x2b0 [ 46.048167] do_error_trap+0x1d7/0x310 [ 46.052067] ? math_error+0x310/0x310 [ 46.055892] ? __irq_work_queue_local+0x101/0x160 [ 46.060829] ? irq_work_queue+0x29/0x80 [ 46.064815] ? error_entry+0x72/0xd0 [ 46.068528] ? trace_hardirqs_off_caller+0x6e/0x210 [ 46.073557] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 46.078423] invalid_op+0x14/0x20 [ 46.081895] RIP: 0010:udf_truncate_extents.cold+0x11/0x18 [ 46.087533] Code: 89 df 48 c7 c6 40 a9 9a 88 e8 ac f9 ff ff 41 bc ea ff ff ff e9 b6 6f 78 fa e8 f0 c4 69 f9 48 c7 c7 60 b4 9a 88 e8 0f db fa ff <0f> 0b e9 a1 90 78 fa e8 d8 c4 69 f9 48 c7 c6 40 ba 9a 88 48 c7 c7 [ 46.106435] RSP: 0018:ffff88809dba7948 EFLAGS: 00010286 [ 46.111792] RAX: 0000000000000024 RBX: ffff88808b9a8120 RCX: 0000000000000000 [ 46.119049] RDX: 0000000000000000 RSI: ffffffff814dfe11 RDI: ffffed1013b74f1b [ 46.126304] RBP: ffff88809dba7a30 R08: 0000000000000024 R09: 0000000000000000 [ 46.133561] R10: 0000000000000005 R11: 0000000000000000 R12: ffff88809dba79f0 [ 46.140818] R13: 0000000000000010 R14: 00000000000000ff R15: ffff8880abf749c0 [ 46.148096] ? vprintk_func+0x81/0x180 [ 46.151991] ? udf_truncate_extents.cold+0x11/0x18 [ 46.157041] ? lock_downgrade+0x720/0x720 [ 46.161210] ? udf_discard_prealloc+0x690/0x690 [ 46.165888] ? udf_write_failed.isra.0+0x173/0x1d0 [ 46.170815] ? udf_write_failed.isra.0+0xd4/0x1d0 [ 46.175650] udf_write_failed.isra.0+0x17b/0x1d0 [ 46.180409] udf_write_begin+0x89/0xa0 [ 46.184292] generic_perform_write+0x1f8/0x4d0 [ 46.188865] ? __mnt_drop_write_file+0x6f/0xa0 [ 46.193460] ? filemap_page_mkwrite+0x2f0/0x2f0 [ 46.198115] ? current_time+0x1c0/0x1c0 [ 46.202089] __generic_file_write_iter+0x24b/0x610 [ 46.207053] udf_file_write_iter+0x2d4/0x4e0 [ 46.211545] __vfs_write+0x51b/0x770 [ 46.215243] ? kernel_read+0x110/0x110 [ 46.219129] ? check_preemption_disabled+0x41/0x280 [ 46.224142] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 46.229148] vfs_write+0x1f3/0x540 [ 46.232685] ksys_write+0x12b/0x2a0 [ 46.236296] ? __ia32_sys_read+0xb0/0xb0 [ 46.240351] ? trace_hardirqs_off_caller+0x6e/0x210 [ 46.245358] ? do_syscall_64+0x21/0x620 [ 46.249317] do_syscall_64+0xf9/0x620 [ 46.253116] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 46.258289] RIP: 0033:0x7fe47cd87c69 [ 46.261982] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 b8 ff ff ff f7 d8 64 89 01 48 [ 46.280870] RSP: 002b:00007fe47cd302f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 46.288565] RAX: ffffffffffffffda RBX: 00007fe47ce0d4c0 RCX: 00007fe47cd87c69 [ 46.295826] RDX: 000000000208e24b RSI: 0000000020000040 RDI: 0000000000000004 [ 46.303339] RBP: 00007fe47cdd96a8 R08: 0000000000000000 R09: 0000000000000000 [ 46.310685] R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e [ 46.317988] R13: 2f30656c69662f2e R14: 6465646165726874 R15: 00007fe47ce0d4c8 [ 46.325638] Kernel Offset: disabled [ 46.329303] Rebooting in 86400 seconds..