[ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.121' (ECDSA) to the list of known hosts. syzkaller login: [ 70.581465][ T8447] chnl_net:caif_netlink_parms(): no params data found [ 70.658347][ T8447] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.665729][ T8447] bridge0: port 1(bridge_slave_0) entered disabled state [ 70.674602][ T8447] device bridge_slave_0 entered promiscuous mode [ 70.684801][ T8447] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.692400][ T8447] bridge0: port 2(bridge_slave_1) entered disabled state [ 70.701540][ T8447] device bridge_slave_1 entered promiscuous mode [ 70.729320][ T8447] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 70.740243][ T8447] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 70.770673][ T8447] team0: Port device team_slave_0 added [ 70.778761][ T8447] team0: Port device team_slave_1 added [ 70.805564][ T8447] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 70.813129][ T8447] 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. [ 70.839446][ T8447] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 70.851945][ T8447] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 70.859072][ T8447] 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. [ 70.885013][ T8447] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 70.919014][ T8447] device hsr_slave_0 entered promiscuous mode [ 70.926856][ T8447] device hsr_slave_1 entered promiscuous mode [ 71.043381][ T8447] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 71.053963][ T8447] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 71.064623][ T8447] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 71.076927][ T8447] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 71.101061][ T8447] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.108209][ T8447] bridge0: port 2(bridge_slave_1) entered forwarding state [ 71.115870][ T8447] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.122935][ T8447] bridge0: port 1(bridge_slave_0) entered forwarding state [ 71.164950][ T8447] 8021q: adding VLAN 0 to HW filter on device bond0 [ 71.178104][ T4856] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 71.189991][ T4856] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.198872][ T4856] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.207817][ T4856] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 71.220468][ T8447] 8021q: adding VLAN 0 to HW filter on device team0 [ 71.232039][ T4856] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 71.241179][ T4856] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.248310][ T4856] bridge0: port 1(bridge_slave_0) entered forwarding state [ 71.268310][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 71.277396][ T5] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.284424][ T5] bridge0: port 2(bridge_slave_1) entered forwarding state [ 71.294203][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 71.312775][ T8447] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 71.324965][ T8447] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 71.339578][ T8765] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 71.348375][ T8765] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 71.357548][ T8765] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 71.366711][ T8765] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 71.377835][ T8765] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 71.394569][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 71.402650][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 71.415469][ T8447] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 71.433891][ T8765] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 71.453797][ T8447] device veth0_vlan entered promiscuous mode [ 71.461167][ T4856] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 71.470771][ T4856] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 71.478526][ T4856] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 71.491830][ T8447] device veth1_vlan entered promiscuous mode [ 71.511990][ T4856] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 71.521503][ T4856] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 71.530065][ T4856] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 71.540626][ T8447] device veth0_macvtap entered promiscuous mode [ 71.551710][ T8447] device veth1_macvtap entered promiscuous mode [ 71.568246][ T8447] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 71.576106][ T4856] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 71.586892][ T4856] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 71.598581][ T8447] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 71.607202][ T4856] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready executing program [ 71.615548][ T4856] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 71.628257][ T8447] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.637820][ T8447] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.650336][ T8447] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.661714][ T8447] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.699588][ T8447] general protection fault, probably for non-canonical address 0xdffffc00000000b3: 0000 [#1] PREEMPT SMP KASAN [ 71.711320][ T8447] KASAN: null-ptr-deref in range [0x0000000000000598-0x000000000000059f] [ 71.719713][ T8447] CPU: 0 PID: 8447 Comm: syz-executor332 Not tainted 5.14.0-rc2-syzkaller #0 [ 71.728491][ T8447] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.738524][ T8447] RIP: 0010:add_del_if+0x57/0x140 [ 71.743565][ T8447] Code: 03 80 3c 02 00 0f 85 fd 00 00 00 48 8b 9d 88 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb 98 05 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 ca 00 00 00 4c 8b ab 98 05 00 00 48 b8 00 00 00 [ 71.763187][ T8447] RSP: 0018:ffffc90002b9fa80 EFLAGS: 00010202 [ 71.769263][ T8447] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 71.777235][ T8447] RDX: 00000000000000b3 RSI: ffffffff87f667b6 RDI: 0000000000000598 [ 71.785197][ T8447] RBP: ffff88802e3cac00 R08: 00000000000089a2 R09: ffffffff87f67f36 [ 71.793162][ T8447] R10: ffffffff87f68031 R11: 00000000000089a2 R12: 0000000000000001 [ 71.801124][ T8447] R13: ffffc90002b9fd60 R14: 0000000000000000 R15: dffffc0000000000 [ 71.809086][ T8447] FS: 0000000001a43300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 71.818007][ T8447] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 71.824597][ T8447] CR2: 0000000020000040 CR3: 0000000016716000 CR4: 00000000001506f0 [ 71.832559][ T8447] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 71.840518][ T8447] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 71.848495][ T8447] Call Trace: [ 71.851785][ T8447] br_ioctl_stub+0x1c6/0x7f0 [ 71.856374][ T8447] ? br_dev_siocdevprivate+0x15c0/0x15c0 [ 71.862003][ T8447] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 71.868243][ T8447] ? full_name_hash+0xb5/0xf0 [ 71.872927][ T8447] ? br_dev_siocdevprivate+0x15c0/0x15c0 [ 71.878552][ T8447] br_ioctl_call+0x5e/0xa0 [ 71.882961][ T8447] dev_ifsioc+0xc1f/0xf60 [ 71.887288][ T8447] ? dev_load+0x79/0x200 [ 71.891537][ T8447] ? sock_diag_broadcast_destroy+0x1a0/0x1a0 [ 71.897508][ T8447] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 71.903744][ T8447] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 71.909978][ T8447] ? netdev_name_node_lookup_rcu+0x108/0x150 [ 71.915965][ T8447] dev_ioctl+0x1b9/0xee0 [ 71.920205][ T8447] sock_do_ioctl+0x18b/0x210 [ 71.924787][ T8447] ? put_user_ifreq+0x140/0x140 [ 71.929638][ T8447] sock_ioctl+0x2f1/0x640 [ 71.933958][ T8447] ? br_ioctl_call+0xa0/0xa0 [ 71.938542][ T8447] ? lock_downgrade+0x6e0/0x6e0 [ 71.943398][ T8447] ? lock_downgrade+0x6e0/0x6e0 [ 71.948271][ T8447] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 71.954505][ T8447] ? br_ioctl_call+0xa0/0xa0 [ 71.959089][ T8447] __x64_sys_ioctl+0x193/0x200 [ 71.963862][ T8447] do_syscall_64+0x35/0xb0 [ 71.968295][ T8447] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 71.974181][ T8447] RIP: 0033:0x4430b9 [ 71.978063][ T8447] Code: 28 c3 e8 4a 15 00 00 66 2e 0f 1f 84 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 71.997667][ T8447] RSP: 002b:00007fff8e3c4768 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 72.006072][ T8447] RAX: ffffffffffffffda RBX: 00007fff8e3c4778 RCX: 00000000004430b9 [ 72.014033][ T8447] RDX: 0000000020000040 RSI: 00000000000089a2 RDI: 0000000000000003 [ 72.021997][ T8447] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 72.029970][ T8447] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff8e3c4780 [ 72.037929][ T8447] R13: 00007fff8e3c47a0 R14: 00000000004b8018 R15: 00000000004004b8 [ 72.045893][ T8447] Modules linked in: [ 72.056074][ T8447] ---[ end trace a384aeb56111999d ]--- [ 72.061543][ T8447] RIP: 0010:add_del_if+0x57/0x140 [ 72.067237][ T8447] Code: 03 80 3c 02 00 0f 85 fd 00 00 00 48 8b 9d 88 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb 98 05 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 ca 00 00 00 4c 8b ab 98 05 00 00 48 b8 00 00 00 [ 72.087546][ T8447] RSP: 0018:ffffc90002b9fa80 EFLAGS: 00010202 [ 72.093623][ T8447] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 72.102150][ T8447] RDX: 00000000000000b3 RSI: ffffffff87f667b6 RDI: 0000000000000598 [ 72.110369][ T8447] RBP: ffff88802e3cac00 R08: 00000000000089a2 R09: ffffffff87f67f36 [ 72.118494][ T8447] R10: ffffffff87f68031 R11: 00000000000089a2 R12: 0000000000000001 [ 72.126564][ T8447] R13: ffffc90002b9fd60 R14: 0000000000000000 R15: dffffc0000000000 [ 72.134519][ T8447] FS: 0000000001a43300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 72.143493][ T8447] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 72.150110][ T8447] CR2: 0000000020000040 CR3: 0000000016716000 CR4: 00000000001506f0 [ 72.158587][ T8447] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 72.166833][ T8447] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 72.175251][ T8447] Kernel panic - not syncing: Fatal exception [ 72.181348][ T8447] Kernel Offset: disabled [ 72.185656][ T8447] Rebooting in 86400 seconds..