[ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.141' (ECDSA) to the list of known hosts. 2020/09/01 14:34:41 parsed 1 programs 2020/09/01 14:34:42 executed programs: 0 syzkaller login: [ 65.707377][ T6860] IPVS: ftp: loaded support on port[0] = 21 [ 65.878347][ T6860] chnl_net:caif_netlink_parms(): no params data found [ 65.936903][ T6860] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.944844][ T6860] bridge0: port 1(bridge_slave_0) entered disabled state [ 65.954216][ T6860] device bridge_slave_0 entered promiscuous mode [ 65.964184][ T6860] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.972203][ T6860] bridge0: port 2(bridge_slave_1) entered disabled state [ 65.980837][ T6860] device bridge_slave_1 entered promiscuous mode [ 66.004251][ T6860] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 66.015747][ T6860] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 66.039836][ T6860] team0: Port device team_slave_0 added [ 66.047849][ T6860] team0: Port device team_slave_1 added [ 66.067910][ T6860] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 66.075186][ T6860] 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. [ 66.103237][ T6860] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 66.116776][ T6860] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 66.125280][ T6860] 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. [ 66.151927][ T6860] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 66.181512][ T6860] device hsr_slave_0 entered promiscuous mode [ 66.188659][ T6860] device hsr_slave_1 entered promiscuous mode [ 66.293709][ T6860] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 66.305365][ T6860] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 66.316853][ T6860] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 66.328138][ T6860] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 66.353930][ T6860] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.361193][ T6860] bridge0: port 2(bridge_slave_1) entered forwarding state [ 66.368959][ T6860] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.376184][ T6860] bridge0: port 1(bridge_slave_0) entered forwarding state [ 66.427362][ T6860] 8021q: adding VLAN 0 to HW filter on device bond0 [ 66.442841][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 66.453128][ T23] bridge0: port 1(bridge_slave_0) entered disabled state [ 66.462206][ T23] bridge0: port 2(bridge_slave_1) entered disabled state [ 66.471740][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 66.486269][ T6860] 8021q: adding VLAN 0 to HW filter on device team0 [ 66.499217][ T2466] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 66.508865][ T2466] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.516030][ T2466] bridge0: port 1(bridge_slave_0) entered forwarding state [ 66.530330][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 66.539586][ T23] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.546756][ T23] bridge0: port 2(bridge_slave_1) entered forwarding state [ 66.570514][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 66.578991][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 66.597075][ T6860] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 66.608290][ T6860] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 66.622190][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 66.630482][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 66.639630][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 66.649661][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 66.672010][ T2650] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 66.679498][ T2650] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 66.694726][ T6860] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 66.714067][ T2466] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 66.735167][ T2650] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 66.744818][ T2650] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 66.753702][ T2650] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 66.764528][ T6860] device veth0_vlan entered promiscuous mode [ 66.776939][ T6860] device veth1_vlan entered promiscuous mode [ 66.798996][ T2466] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 66.808333][ T2466] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 66.817073][ T2466] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 66.831408][ T6860] device veth0_macvtap entered promiscuous mode [ 66.845094][ T6860] device veth1_macvtap entered promiscuous mode [ 66.853472][ T2466] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 66.872647][ T6860] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 66.880310][ T2650] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 66.889299][ T2650] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 66.905450][ T6860] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 66.913420][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 66.923261][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 66.935330][ T6860] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.945225][ T6860] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.954685][ T6860] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.964208][ T6860] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.700844][ T5] Bluetooth: hci0: command 0x0409 tx timeout 2020/09/01 14:34:47 executed programs: 63 [ 69.769772][ T17] Bluetooth: hci0: command 0x041b tx timeout [ 70.841202][ T7429] general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN [ 70.852954][ T7429] KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] [ 70.861402][ T7429] CPU: 0 PID: 7429 Comm: syz-executor.0 Not tainted 5.9.0-rc3-syzkaller #0 [ 70.869986][ T7429] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 70.880188][ T7429] RIP: 0010:snd_ctl_release+0x69/0x3e0 [ 70.885767][ T7429] Code: 44 24 10 4c 8b b0 b0 01 00 00 48 c7 80 b0 01 00 00 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d 7e 10 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 f7 02 00 00 49 8b 46 10 4d 8d 6e 08 4c 8d a0 48 [ 70.905403][ T7429] RSP: 0018:ffffc900073bfe10 EFLAGS: 00010202 [ 70.911494][ T7429] RAX: dffffc0000000000 RBX: ffff8880a2a9fcc0 RCX: 1ffffffff11eb3f0 [ 70.919468][ T7429] RDX: 0000000000000002 RSI: ffffffff860cbd2b RDI: 0000000000000010 [ 70.927446][ T7429] RBP: ffff8880a2a9fcc0 R08: 0000000000000001 R09: ffffffff89cc5567 [ 70.935418][ T7429] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a2a9fd44 [ 70.943401][ T7429] R13: ffff8880a2a9fce8 R14: 0000000000000000 R15: ffff8880a4bc1468 [ 70.951372][ T7429] FS: 00007f30f5cd0700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 70.960302][ T7429] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 70.966868][ T7429] CR2: 0000000000000000 CR3: 0000000096ced000 CR4: 00000000001506f0 [ 70.974837][ T7429] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 70.982796][ T7429] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 70.990978][ T7429] Call Trace: [ 70.994258][ T7429] __fput+0x285/0x920 [ 70.998231][ T7429] ? snd_ctl_empty_read_queue+0x210/0x210 [ 71.004065][ T7429] task_work_run+0xdd/0x190 [ 71.008570][ T7429] exit_to_user_mode_prepare+0x1e1/0x200 [ 71.014200][ T7429] syscall_exit_to_user_mode+0x7e/0x2e0 [ 71.019748][ T7429] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 71.026297][ T7429] RIP: 0033:0x45d5b9 [ 71.030756][ T7429] Code: 5d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 71.051029][ T7429] RSP: 002b:00007f30f5ccfc78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e9 [ 71.060433][ T7429] RAX: 0000000000000000 RBX: 0000000000002ac0 RCX: 000000000045d5b9 [ 71.068974][ T7429] RDX: 0000000000000004 RSI: 0000000000000001 RDI: 0000000000000006 [ 71.078139][ T7429] RBP: 000000000118cf88 R08: 0000000000000000 R09: 0000000000000000 [ 71.086197][ T7429] R10: 0000000020000180 R11: 0000000000000246 R12: 000000000118cf4c [ 71.094244][ T7429] R13: 000000000169fb6f R14: 00007f30f5cd09c0 R15: 000000000118cf4c [ 71.103117][ T7429] Modules linked in: [ 71.109179][ T7429] ---[ end trace d1d5678dff9246de ]--- [ 71.114688][ T7429] RIP: 0010:snd_ctl_release+0x69/0x3e0 [ 71.120634][ T7429] Code: 44 24 10 4c 8b b0 b0 01 00 00 48 c7 80 b0 01 00 00 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d 7e 10 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 f7 02 00 00 49 8b 46 10 4d 8d 6e 08 4c 8d a0 48 [ 71.144995][ T7429] RSP: 0018:ffffc900073bfe10 EFLAGS: 00010202 [ 71.151516][ T7429] RAX: dffffc0000000000 RBX: ffff8880a2a9fcc0 RCX: 1ffffffff11eb3f0 [ 71.159682][ T7429] RDX: 0000000000000002 RSI: ffffffff860cbd2b RDI: 0000000000000010 [ 71.167650][ T7429] RBP: ffff8880a2a9fcc0 R08: 0000000000000001 R09: ffffffff89cc5567 [ 71.179009][ T7429] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a2a9fd44 [ 71.188671][ T7429] R13: ffff8880a2a9fce8 R14: 0000000000000000 R15: ffff8880a4bc1468 [ 71.196913][ T7429] FS: 00007f30f5cd0700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 71.205926][ T7429] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 71.213104][ T7429] CR2: 0000000000000000 CR3: 0000000096ced000 CR4: 00000000001506f0 [ 71.222918][ T7429] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 71.231139][ T7429] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 71.240702][ T7429] Kernel panic - not syncing: Fatal exception [ 71.248177][ T7429] Kernel Offset: disabled [ 71.252500][ T7429] Rebooting in 86400 seconds..