[ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ 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. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.80' (ECDSA) to the list of known hosts. 2020/11/02 23:43:38 parsed 1 programs 2020/11/02 23:43:38 executed programs: 0 syzkaller login: [ 67.549075][ T8530] IPVS: ftp: loaded support on port[0] = 21 [ 67.752137][ T8530] chnl_net:caif_netlink_parms(): no params data found [ 67.806354][ T8530] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.816020][ T8530] bridge0: port 1(bridge_slave_0) entered disabled state [ 67.824022][ T8530] device bridge_slave_0 entered promiscuous mode [ 67.834524][ T8530] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.841683][ T8530] bridge0: port 2(bridge_slave_1) entered disabled state [ 67.849916][ T8530] device bridge_slave_1 entered promiscuous mode [ 67.870563][ T8530] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 67.881693][ T8530] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 67.905992][ T8530] team0: Port device team_slave_0 added [ 67.913221][ T8530] team0: Port device team_slave_1 added [ 67.931435][ T8530] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 67.938586][ T8530] 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. [ 67.964607][ T8530] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 67.977535][ T8530] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 67.984671][ T8530] 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. [ 68.010813][ T8530] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 68.037842][ T8530] device hsr_slave_0 entered promiscuous mode [ 68.044913][ T8530] device hsr_slave_1 entered promiscuous mode [ 68.143966][ T8530] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 68.154875][ T8530] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 68.165730][ T8530] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 68.175529][ T8530] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 68.201902][ T8530] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.209211][ T8530] bridge0: port 2(bridge_slave_1) entered forwarding state [ 68.217437][ T8530] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.224765][ T8530] bridge0: port 1(bridge_slave_0) entered forwarding state [ 68.276552][ T8530] 8021q: adding VLAN 0 to HW filter on device bond0 [ 68.290095][ T3079] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 68.301920][ T3079] bridge0: port 1(bridge_slave_0) entered disabled state [ 68.311881][ T3079] bridge0: port 2(bridge_slave_1) entered disabled state [ 68.320092][ T3079] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 68.333430][ T8530] 8021q: adding VLAN 0 to HW filter on device team0 [ 68.346517][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 68.356105][ T17] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.363277][ T17] bridge0: port 1(bridge_slave_0) entered forwarding state [ 68.376961][ T3079] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 68.386066][ T3079] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.393283][ T3079] bridge0: port 2(bridge_slave_1) entered forwarding state [ 68.415012][ T3001] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 68.433968][ T8530] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 68.445462][ T8530] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 68.460440][ T8751] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 68.469929][ T8751] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 68.479590][ T8751] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 68.490719][ T8751] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 68.499523][ T8751] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 68.521495][ T8530] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 68.529204][ T8751] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 68.537877][ T8751] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 68.557628][ T3079] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 68.578749][ T8751] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 68.588502][ T8751] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 68.597611][ T8751] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 68.608179][ T8530] device veth0_vlan entered promiscuous mode [ 68.621899][ T8530] device veth1_vlan entered promiscuous mode [ 68.645759][ T8751] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 68.653854][ T8751] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 68.663008][ T8751] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 68.675723][ T8530] device veth0_macvtap entered promiscuous mode [ 68.686756][ T8530] device veth1_macvtap entered promiscuous mode [ 68.705962][ T8530] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 68.715177][ T3079] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 68.726298][ T3079] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 68.739086][ T8530] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 68.747045][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 68.756832][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 68.768071][ T8530] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.777594][ T8530] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.787571][ T8530] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.796829][ T8530] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.891654][ T44] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 68.908928][ T44] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 68.928407][ T301] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 68.939458][ T301] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 68.951913][ T8749] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 68.963422][ T8749] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 69.595457][ T17] Bluetooth: hci0: command 0x0409 tx timeout [ 69.927118][ T8824] general protection fault, probably for non-canonical address 0xdffffc000000000b: 0000 [#1] PREEMPT SMP KASAN [ 69.938887][ T8824] KASAN: null-ptr-deref in range [0x0000000000000058-0x000000000000005f] [ 69.947307][ T8824] CPU: 1 PID: 8824 Comm: io_uring-sq Not tainted 5.10.0-rc1-next-20201102-syzkaller #0 [ 69.958356][ T8824] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.968432][ T8824] RIP: 0010:__fget_files+0xef/0x400 [ 69.973639][ T8824] Code: db 74 1d e8 43 0d ac ff 0f b6 1d c1 82 14 0b 31 ff 89 de e8 43 05 ac ff 84 db 0f 84 d0 01 00 00 e8 26 0d ac ff 48 8b 44 24 10 <80> 38 00 0f 85 c3 02 00 00 48 8b 44 24 08 48 8b 68 58 48 89 e8 48 [ 69.993281][ T8824] RSP: 0018:ffffc900023dfb28 EFLAGS: 00010293 [ 69.999438][ T8824] RAX: dffffc000000000b RBX: 0000000000000001 RCX: ffffffff81c4157a [ 70.007411][ T8824] RDX: ffff88814193b500 RSI: ffffffff81c4139a RDI: 0000000000000005 [ 70.015386][ T8824] RBP: ffffc900023dfd20 R08: 0000000000000001 R09: ffffffff8ebb4667 [ 70.023357][ T8824] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 70.031324][ T8824] R13: dffffc0000000000 R14: 0000000000000003 R15: ffffc900023dfd30 [ 70.039308][ T8824] FS: 0000000000000000(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 [ 70.048250][ T8824] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 70.054836][ T8824] CR2: 00007f42329d7db8 CR3: 000000001b67b000 CR4: 00000000001506e0 [ 70.062826][ T8824] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 70.070809][ T8824] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 70.078778][ T8824] Call Trace: [ 70.082081][ T8824] io_file_get+0x454/0x8b0 [ 70.086508][ T8824] io_submit_sqes+0xf1c/0x25f0 [ 70.091277][ T8824] ? io_queue_sqe+0xed0/0xed0 [ 70.095956][ T8824] ? io_sq_thread+0x49c/0x1700 [ 70.100728][ T8824] ? mutex_lock_io_nested+0xf60/0xf60 [ 70.106086][ T8824] ? do_raw_spin_lock+0x120/0x2b0 [ 70.111182][ T8824] ? rwlock_bug.part.0+0x90/0x90 [ 70.116232][ T8824] ? _raw_spin_unlock_irq+0x1f/0x40 [ 70.121433][ T8824] io_sq_thread+0x4d2/0x1700 [ 70.126049][ T8824] ? __do_sys_io_uring_enter+0x1b50/0x1b50 [ 70.131859][ T8824] ? lockdep_hardirqs_on+0x79/0x100 [ 70.137059][ T8824] ? __kthread_parkme+0x13f/0x1e0 [ 70.142067][ T8824] ? __do_sys_io_uring_enter+0x1b50/0x1b50 [ 70.147858][ T8824] kthread+0x3af/0x4a0 [ 70.151931][ T8824] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 70.157807][ T8824] ret_from_fork+0x1f/0x30 [ 70.162217][ T8824] Modules linked in: [ 70.394121][ T8824] ---[ end trace 71851a1d0e522d2e ]--- [ 70.400793][ T8824] RIP: 0010:__fget_files+0xef/0x400 [ 70.406389][ T8824] Code: db 74 1d e8 43 0d ac ff 0f b6 1d c1 82 14 0b 31 ff 89 de e8 43 05 ac ff 84 db 0f 84 d0 01 00 00 e8 26 0d ac ff 48 8b 44 24 10 <80> 38 00 0f 85 c3 02 00 00 48 8b 44 24 08 48 8b 68 58 48 89 e8 48 [ 70.427093][ T8824] RSP: 0018:ffffc900023dfb28 EFLAGS: 00010293 [ 70.433695][ T8824] RAX: dffffc000000000b RBX: 0000000000000001 RCX: ffffffff81c4157a [ 70.442698][ T8824] RDX: ffff88814193b500 RSI: ffffffff81c4139a RDI: 0000000000000005 [ 70.451291][ T8824] RBP: ffffc900023dfd20 R08: 0000000000000001 R09: ffffffff8ebb4667 [ 70.473821][ T8824] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 70.481828][ T8824] R13: dffffc0000000000 R14: 0000000000000003 R15: ffffc900023dfd30 [ 70.503507][ T8824] FS: 0000000000000000(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 [ 70.512927][ T8824] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 70.522855][ T8824] CR2: 00007ffdc225dc7c CR3: 000000000b08e000 CR4: 00000000001506f0 [ 70.544095][ T8824] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 70.552099][ T8824] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 70.573771][ T8824] Kernel panic - not syncing: Fatal exception [ 70.580660][ T8824] Kernel Offset: disabled [ 70.584980][ T8824] Rebooting in 86400 seconds..