[ 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 '10.128.0.40' (ECDSA) to the list of known hosts. 2020/08/31 11:46:19 parsed 1 programs 2020/08/31 11:46:19 executed programs: 0 syzkaller login: [ 39.442553] audit: type=1400 audit(1598874379.960:8): avc: denied { execmem } for pid=6483 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 40.567963] IPVS: ftp: loaded support on port[0] = 21 [ 40.666952] chnl_net:caif_netlink_parms(): no params data found [ 40.778001] bridge0: port 1(bridge_slave_0) entered blocking state [ 40.785150] bridge0: port 1(bridge_slave_0) entered disabled state [ 40.792500] device bridge_slave_0 entered promiscuous mode [ 40.802270] bridge0: port 2(bridge_slave_1) entered blocking state [ 40.809192] bridge0: port 2(bridge_slave_1) entered disabled state [ 40.816794] device bridge_slave_1 entered promiscuous mode [ 40.834756] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 40.843667] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 40.862417] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 40.869878] team0: Port device team_slave_0 added [ 40.876679] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 40.883916] team0: Port device team_slave_1 added [ 40.899636] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 40.906067] 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. [ 40.931539] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 40.943303] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 40.949623] 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. [ 40.975005] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 40.985905] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 40.993295] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 41.012556] device hsr_slave_0 entered promiscuous mode [ 41.018716] device hsr_slave_1 entered promiscuous mode [ 41.025162] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 41.032273] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 41.099436] bridge0: port 2(bridge_slave_1) entered blocking state [ 41.106080] bridge0: port 2(bridge_slave_1) entered forwarding state [ 41.113150] bridge0: port 1(bridge_slave_0) entered blocking state [ 41.119573] bridge0: port 1(bridge_slave_0) entered forwarding state [ 41.153088] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 41.160581] 8021q: adding VLAN 0 to HW filter on device bond0 [ 41.169664] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 41.178372] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 41.188257] bridge0: port 1(bridge_slave_0) entered disabled state [ 41.195748] bridge0: port 2(bridge_slave_1) entered disabled state [ 41.202651] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 41.214518] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 41.220725] 8021q: adding VLAN 0 to HW filter on device team0 [ 41.235629] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 41.243262] bridge0: port 1(bridge_slave_0) entered blocking state [ 41.249664] bridge0: port 1(bridge_slave_0) entered forwarding state [ 41.256682] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 41.264854] bridge0: port 2(bridge_slave_1) entered blocking state [ 41.271318] bridge0: port 2(bridge_slave_1) entered forwarding state [ 41.284763] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 41.295754] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 41.311853] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 41.322173] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 41.333853] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 41.341047] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 41.349417] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 41.358498] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 41.366713] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 41.379998] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 41.387530] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 41.394324] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 41.408920] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 41.421489] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 41.431703] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 41.467209] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 41.474892] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 41.481388] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 41.491160] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 41.499754] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 41.507234] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 41.516957] device veth0_vlan entered promiscuous mode [ 41.526272] device veth1_vlan entered promiscuous mode [ 41.532118] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 41.542004] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 41.554084] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 41.563400] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 41.571495] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 41.579266] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 41.589328] device veth0_macvtap entered promiscuous mode [ 41.596158] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 41.604656] device veth1_macvtap entered promiscuous mode [ 41.613291] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 41.622879] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 41.633032] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 41.641082] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 41.649637] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 41.659686] IPv6: ADDRCONF(NETDEV_UP): batadv_slave_1: link is not ready [ 41.667788] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 41.675950] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 41.684791] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 42.584427] Bluetooth: hci0: command 0x0409 tx timeout 2020/08/31 11:46:24 executed programs: 128 [ 44.662659] Bluetooth: hci0: command 0x041b tx timeout [ 46.742554] Bluetooth: hci0: command 0x040f tx timeout [ 48.821341] Bluetooth: hci0: command 0x0419 tx timeout 2020/08/31 11:46:29 executed programs: 365 [ 52.790822] kasan: CONFIG_KASAN_INLINE enabled [ 52.796127] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 52.804914] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 52.811800] CPU: 0 PID: 8960 Comm: syz-executor.0 Not tainted 4.19.142-syzkaller #0 [ 52.820132] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.830704] RIP: 0010:vgem_fence_attach_ioctl+0x27d/0x640 [ 52.836993] Code: 03 80 3c 02 00 0f 85 9b 03 00 00 4c 8b b5 10 01 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d be e0 00 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 7f 03 00 00 4c 89 ea 4d 8b b6 e0 00 00 00 48 b8 [ 52.858791] RSP: 0018:ffff888082637af0 EFLAGS: 00010202 [ 52.864305] RAX: dffffc0000000000 RBX: ffff88809aeb5c80 RCX: 1ffff110104c6f4b [ 52.871752] RDX: 000000000000001c RSI: ffffffff815addbf RDI: 00000000000000e0 [ 52.879317] RBP: ffff88809aca7580 R08: 0000000000000000 R09: 0000000000000000 [ 52.887586] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88809391d7c0 [ 52.895103] R13: ffff88809aeb5c84 R14: 0000000000000000 R15: ffff88809391d858 [ 52.903471] FS: 00007f7f6b422700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 52.912260] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 52.918500] CR2: 00007f7f6b400db8 CR3: 00000000883db000 CR4: 00000000001406f0 [ 52.926324] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 52.934246] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 52.942066] Call Trace: [ 52.945042] drm_ioctl_kernel+0x208/0x2a0 [ 52.949302] ? __vgem_fence_idr_fini+0x60/0x60 [ 52.953893] ? drm_ioctl_permit+0x210/0x210 [ 52.958549] ? __might_fault+0x192/0x1d0 [ 52.962611] drm_ioctl+0x507/0x9c0 [ 52.966561] ? __vgem_fence_idr_fini+0x60/0x60 [ 52.971466] ? drm_getstats+0x20/0x20 [ 52.975267] ? mark_held_locks+0xf0/0xf0 [ 52.979552] ? debug_check_no_obj_freed+0x201/0x482 [ 52.984654] ? __might_fault+0x11f/0x1d0 [ 52.988946] ? drm_getstats+0x20/0x20 [ 52.992757] do_vfs_ioctl+0xcdb/0x12e0 [ 52.997426] ? selinux_file_ioctl+0x506/0x6c0 [ 53.002120] ? ioctl_preallocate+0x200/0x200 [ 53.006528] ? selinux_inode_link+0x20/0x20 [ 53.010904] ? __fget+0x356/0x510 [ 53.014363] ? do_dup2+0x450/0x450 [ 53.017904] ksys_ioctl+0x9b/0xc0 [ 53.021524] __x64_sys_ioctl+0x6f/0xb0 [ 53.025553] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 53.030191] do_syscall_64+0xf9/0x620 [ 53.034062] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 53.039694] RIP: 0033:0x45d5b9 [ 53.042891] 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 [ 53.062304] RSP: 002b:00007f7f6b421c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 53.070079] RAX: ffffffffffffffda RBX: 000000000000c4c0 RCX: 000000000045d5b9 [ 53.078954] RDX: 0000000020000140 RSI: 00000000c10c5541 RDI: 0000000000000003 [ 53.086312] RBP: 000000000118cf80 R08: 0000000000000000 R09: 0000000000000000 [ 53.093837] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cf4c [ 53.101938] R13: 00007ffc59960daf R14: 00007f7f6b4229c0 R15: 000000000118cf4c [ 53.109670] Modules linked in: [ 53.114817] ---[ end trace fb805e7fe7e36620 ]--- [ 53.119860] RIP: 0010:vgem_fence_attach_ioctl+0x27d/0x640 [ 53.125575] Code: 03 80 3c 02 00 0f 85 9b 03 00 00 4c 8b b5 10 01 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d be e0 00 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 7f 03 00 00 4c 89 ea 4d 8b b6 e0 00 00 00 48 b8 [ 53.146150] RSP: 0018:ffff888082637af0 EFLAGS: 00010202 [ 53.151907] RAX: dffffc0000000000 RBX: ffff88809aeb5c80 RCX: 1ffff110104c6f4b [ 53.159961] RDX: 000000000000001c RSI: ffffffff815addbf RDI: 00000000000000e0 [ 53.172361] RBP: ffff88809aca7580 R08: 0000000000000000 R09: 0000000000000000 [ 53.181841] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88809391d7c0 [ 53.191568] R13: ffff88809aeb5c84 R14: 0000000000000000 R15: ffff88809391d858 [ 53.199572] FS: 00007f7f6b422700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 53.208236] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 53.214161] CR2: 00007f7f6b400db8 CR3: 00000000883db000 CR4: 00000000001406f0 [ 53.221773] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 53.229991] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 53.237950] Kernel panic - not syncing: Fatal exception [ 53.245627] Kernel Offset: disabled [ 53.249471] Rebooting in 86400 seconds..