[ 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 '10.128.15.206' (ECDSA) to the list of known hosts. syzkaller login: [ 64.481469][ T6800] IPVS: ftp: loaded support on port[0] = 21 [ 64.573896][ T6800] chnl_net:caif_netlink_parms(): no params data found [ 64.628822][ T6800] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.636945][ T6800] bridge0: port 1(bridge_slave_0) entered disabled state [ 64.645609][ T6800] device bridge_slave_0 entered promiscuous mode [ 64.655587][ T6800] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.662760][ T6800] bridge0: port 2(bridge_slave_1) entered disabled state [ 64.671149][ T6800] device bridge_slave_1 entered promiscuous mode [ 64.691350][ T6800] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 64.703435][ T6800] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 64.726665][ T6800] team0: Port device team_slave_0 added [ 64.734811][ T6800] team0: Port device team_slave_1 added [ 64.751885][ T6800] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 64.759130][ T6800] 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. [ 64.785248][ T6800] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 64.797963][ T6800] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 64.805081][ T6800] 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. [ 64.831184][ T6800] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 64.897212][ T6800] device hsr_slave_0 entered promiscuous mode [ 64.944254][ T6800] device hsr_slave_1 entered promiscuous mode [ 65.093798][ T6800] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 65.156628][ T6800] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 65.227206][ T6800] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 65.286023][ T6800] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 65.341208][ T6800] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.348486][ T6800] bridge0: port 2(bridge_slave_1) entered forwarding state [ 65.356704][ T6800] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.363912][ T6800] bridge0: port 1(bridge_slave_0) entered forwarding state [ 65.411765][ T6800] 8021q: adding VLAN 0 to HW filter on device bond0 [ 65.426859][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 65.438863][ T17] bridge0: port 1(bridge_slave_0) entered disabled state [ 65.449060][ T17] bridge0: port 2(bridge_slave_1) entered disabled state [ 65.457824][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 65.471579][ T6800] 8021q: adding VLAN 0 to HW filter on device team0 [ 65.484605][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 65.493125][ T5] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.500327][ T5] bridge0: port 1(bridge_slave_0) entered forwarding state [ 65.513913][ T7008] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 65.522447][ T7008] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.529640][ T7008] bridge0: port 2(bridge_slave_1) entered forwarding state [ 65.554963][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 65.565989][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 65.575063][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 65.588621][ T6800] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 65.600938][ T6800] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 65.610283][ T7010] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 65.618584][ T7010] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 65.627441][ T7010] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 65.652418][ T7008] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 65.660614][ T7008] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 65.676496][ T6800] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 65.697167][ T7008] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 65.706530][ T7008] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 65.727599][ T2555] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 65.736597][ T2555] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 65.748394][ T6800] device veth0_vlan entered promiscuous mode [ 65.755565][ T7010] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 65.763406][ T7010] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 65.778072][ T6800] device veth1_vlan entered promiscuous mode [ 65.801194][ T7008] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 65.811359][ T7008] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 65.821204][ T7008] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 65.830713][ T7008] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 65.842369][ T6800] device veth0_macvtap entered promiscuous mode [ 65.854408][ T6800] device veth1_macvtap entered promiscuous mode [ 65.871622][ T6800] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 65.880076][ T7010] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 65.889123][ T7010] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 65.898933][ T7010] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 65.909895][ T7010] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 65.925344][ T6800] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 65.933088][ T7008] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 65.944208][ T7008] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 66.317259][ T7014] general protection fault, probably for non-canonical address 0xdffffc000000001e: 0000 [#1] PREEMPT SMP KASAN [ 66.329059][ T7014] KASAN: null-ptr-deref in range [0x00000000000000f0-0x00000000000000f7] [ 66.337852][ T7014] CPU: 0 PID: 7014 Comm: systemd-udevd Not tainted 5.8.0-rc3-next-20200701-syzkaller #0 [ 66.347574][ T7014] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.357758][ T7014] RIP: 0010:bdev_read_page+0x35/0x290 [ 66.363138][ T7014] Code: f5 53 48 89 fb 48 83 ec 08 48 89 14 24 e8 73 67 a4 ff 48 8d bb f0 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 e7 01 00 00 4c 8b bb f0 00 00 00 48 b8 00 00 00 [ 66.382750][ T7014] RSP: 0018:ffffc900019f7528 EFLAGS: 00010206 [ 66.388826][ T7014] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff81d0537a [ 66.396788][ T7014] RDX: 000000000000001e RSI: ffffffff81cf83fd RDI: 00000000000000f0 [ 66.404760][ T7014] RBP: fff8971fae500000 R08: 0000000000000001 R09: ffffea0002534047 [ 66.412720][ T7014] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 66.420695][ T7014] R13: 0000000000000000 R14: 0000000000000000 R15: ffffc900019f7740 [ 66.428752][ T7014] FS: 00007f42d2df98c0(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 66.437693][ T7014] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 66.444280][ T7014] CR2: 00007fffda094f40 CR3: 0000000095352000 CR4: 00000000001506f0 [ 66.452351][ T7014] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 66.460334][ T7014] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 66.468300][ T7014] Call Trace: [ 66.471588][ T7014] do_mpage_readpage+0x10ca/0x1ef0 [ 66.476703][ T7014] ? lock_downgrade+0x820/0x820 [ 66.481560][ T7014] ? mpage_writepage+0x1b0/0x1b0 [ 66.487102][ T7014] ? __xa_clear_mark+0x110/0x110 [ 66.492032][ T7014] ? lock_is_held_type+0xb0/0xe0 [ 66.496964][ T7014] ? __lock_acquire+0x16e3/0x56e0 [ 66.501980][ T7014] mpage_readahead+0x3a2/0x870 [ 66.506753][ T7014] ? do_mpage_readpage+0x1ef0/0x1ef0 [ 66.512033][ T7014] ? __blkdev_direct_IO_simple+0x940/0x940 [ 66.517845][ T7014] ? lock_downgrade+0x820/0x820 [ 66.522705][ T7014] ? blkdev_write_begin+0x40/0x40 [ 66.527726][ T7014] read_pages+0x1df/0x8d0 [ 66.532068][ T7014] ? read_cache_pages+0x750/0x750 [ 66.537119][ T7014] ? add_to_page_cache_lru+0x2ab/0x5b0 [ 66.542571][ T7014] ? alloc_pages_current+0x18f/0x280 [ 66.547864][ T7014] ? __page_cache_alloc+0x10b/0x450 [ 66.553056][ T7014] page_cache_readahead_unbounded+0x572/0x850 [ 66.559128][ T7014] ? lock_acquire+0x1f1/0xad0 [ 66.563806][ T7014] ? read_pages+0x8d0/0x8d0 [ 66.568312][ T7014] ? blk_cgroup_congested+0x1f9/0x3e0 [ 66.573701][ T7014] force_page_cache_readahead+0x2e9/0x460 [ 66.579428][ T7014] page_cache_sync_readahead+0x113/0x130 [ 66.585069][ T7014] generic_file_buffered_read+0x1197/0x2ed0 [ 66.590962][ T7014] generic_file_read_iter+0x396/0x4e0 [ 66.596333][ T7014] blkdev_read_iter+0x11b/0x180 [ 66.601189][ T7014] new_sync_read+0x41a/0x6e0 [ 66.605898][ T7014] ? vfs_dedupe_file_range+0x780/0x780 [ 66.611406][ T7014] ? security_file_permission+0x239/0x470 [ 66.617153][ T7014] __vfs_read+0xc9/0x100 [ 66.621406][ T7014] vfs_read+0x1f6/0x420 [ 66.625566][ T7014] ksys_read+0x12d/0x250 [ 66.629800][ T7014] ? kernel_write+0x120/0x120 [ 66.634487][ T7014] do_syscall_64+0x60/0xe0 [ 66.638910][ T7014] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 66.644804][ T7014] RIP: 0033:0x7f42d1f40210 [ 66.649223][ T7014] Code: Bad RIP value. [ 66.653273][ T7014] RSP: 002b:00007fffda097618 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 66.661689][ T7014] RAX: ffffffffffffffda RBX: 000056445c179520 RCX: 00007f42d1f40210 [ 66.669659][ T7014] RDX: 0000000000000400 RSI: 000056445c179548 RDI: 000000000000000f [ 66.677634][ T7014] RBP: 000056445c17a4c0 R08: 00007f42d1f2af68 R09: 0000000000000430 [ 66.685608][ T7014] R10: 000000000000006d R11: 0000000000000246 R12: 0000000000000000 [ 66.693566][ T7014] R13: 0000000000000400 R14: 000056445c17a510 R15: 0000000000000400 [ 66.701535][ T7014] Modules linked in: [ 66.716377][ T7014] ---[ end trace ca0444b7e902be32 ]--- [ 66.716406][ T7014] RIP: 0010:bdev_read_page+0x35/0x290 [ 66.727572][ T7014] Code: f5 53 48 89 fb 48 83 ec 08 48 89 14 24 e8 73 67 a4 ff 48 8d bb f0 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 e7 01 00 00 4c 8b bb f0 00 00 00 48 b8 00 00 00 [ 66.747310][ T7014] RSP: 0018:ffffc900019f7528 EFLAGS: 00010206 [ 66.753981][ T7014] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff81d0537a [ 66.761975][ T7014] RDX: 000000000000001e RSI: ffffffff81cf83fd RDI: 00000000000000f0 [ 66.770077][ T7014] RBP: fff8971fae500000 R08: 0000000000000001 R09: ffffea0002534047 [ 66.778143][ T7014] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 66.786222][ T7014] R13: 0000000000000000 R14: 0000000000000000 R15: ffffc900019f7740 [ 66.794533][ T7014] FS: 00007f42d2df98c0(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 66.803560][ T7014] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 66.810150][ T7014] CR2: 00007f0bc9880010 CR3: 0000000095352000 CR4: 00000000001506f0 [ 66.818190][ T7014] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 66.826234][ T7014] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 66.834329][ T7014] Kernel panic - not syncing: Fatal exception [ 66.841015][ T7014] Kernel Offset: disabled [ 66.845343][ T7014] Rebooting in 86400 seconds..