[ 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. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.26' (ECDSA) to the list of known hosts. 2020/08/29 06:54:23 parsed 1 programs 2020/08/29 06:54:23 executed programs: 0 syzkaller login: [ 145.425709] audit: type=1400 audit(1598684063.678:8): avc: denied { execmem } for pid=6498 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 146.579841] IPVS: ftp: loaded support on port[0] = 21 [ 146.689424] chnl_net:caif_netlink_parms(): no params data found [ 146.751815] bridge0: port 1(bridge_slave_0) entered blocking state [ 146.759220] bridge0: port 1(bridge_slave_0) entered disabled state [ 146.767173] device bridge_slave_0 entered promiscuous mode [ 146.774601] bridge0: port 2(bridge_slave_1) entered blocking state [ 146.781075] bridge0: port 2(bridge_slave_1) entered disabled state [ 146.788555] device bridge_slave_1 entered promiscuous mode [ 146.807309] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 146.816655] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 146.836249] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 146.843986] team0: Port device team_slave_0 added [ 146.850095] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 146.857778] team0: Port device team_slave_1 added [ 146.873448] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 146.879761] 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. [ 146.905520] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 146.917266] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 146.923857] 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. [ 146.949644] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 146.960568] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 146.968496] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 146.988578] device hsr_slave_0 entered promiscuous mode [ 146.994258] device hsr_slave_1 entered promiscuous mode [ 147.001298] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 147.008673] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 147.075991] bridge0: port 2(bridge_slave_1) entered blocking state [ 147.082420] bridge0: port 2(bridge_slave_1) entered forwarding state [ 147.089736] bridge0: port 1(bridge_slave_0) entered blocking state [ 147.096190] bridge0: port 1(bridge_slave_0) entered forwarding state [ 147.130079] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 147.137583] 8021q: adding VLAN 0 to HW filter on device bond0 [ 147.146711] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 147.156955] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 147.166101] bridge0: port 1(bridge_slave_0) entered disabled state [ 147.173205] bridge0: port 2(bridge_slave_1) entered disabled state [ 147.181419] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 147.192669] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 147.199442] 8021q: adding VLAN 0 to HW filter on device team0 [ 147.208599] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 147.216988] bridge0: port 1(bridge_slave_0) entered blocking state [ 147.223344] bridge0: port 1(bridge_slave_0) entered forwarding state [ 147.236278] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 147.243899] bridge0: port 2(bridge_slave_1) entered blocking state [ 147.250349] bridge0: port 2(bridge_slave_1) entered forwarding state [ 147.266221] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 147.274170] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 147.282484] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 147.296794] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 147.306784] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 147.318352] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 147.326352] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 147.335752] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 147.343267] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 147.356432] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 147.363831] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 147.371010] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 147.382746] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 147.395949] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 147.407253] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 147.444023] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 147.452459] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 147.459630] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 147.469306] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 147.477460] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 147.484305] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 147.494266] device veth0_vlan entered promiscuous mode [ 147.503581] device veth1_vlan entered promiscuous mode [ 147.510647] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 147.520492] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 147.532584] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 147.542772] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 147.550258] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 147.558267] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 147.568208] device veth0_macvtap entered promiscuous mode [ 147.574396] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 147.582609] device veth1_macvtap entered promiscuous mode [ 147.591819] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 147.601702] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 147.612056] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 147.619169] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 147.627703] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 147.638287] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 147.645524] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 148.595609] Bluetooth: hci0: command 0x0409 tx timeout 2020/08/29 06:54:28 executed programs: 123 [ 150.674807] Bluetooth: hci0: command 0x041b tx timeout [ 152.754735] Bluetooth: hci0: command 0x040f tx timeout [ 154.834641] Bluetooth: hci0: command 0x0419 tx timeout 2020/08/29 06:54:33 executed programs: 349 2020/08/29 06:54:38 executed programs: 693 2020/08/29 06:54:43 executed programs: 1133 [ 167.130686] kasan: CONFIG_KASAN_INLINE enabled [ 167.135661] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 167.143111] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 167.149440] CPU: 0 PID: 11044 Comm: syz-executor.0 Not tainted 4.19.142-syzkaller #0 [ 167.157319] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 167.166762] RIP: 0010:tty_release+0xfb/0xf60 [ 167.171155] Code: 48 c1 ea 03 80 3c 02 00 0f 85 3a 0d 00 00 48 8b 04 24 48 8b 98 90 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 d5 0c 00 00 48 8b 04 24 4c 8b 23 48 8d 78 20 48 [ 167.190388] RSP: 0018:ffff88808b787dc0 EFLAGS: 00010246 [ 167.195733] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff83a58587 [ 167.202985] RDX: 0000000000000000 RSI: ffffffff83a5a212 RDI: 0000000000000004 [ 167.210234] RBP: ffff8880a12bac80 R08: 0000000000000000 R09: 0000000000000000 [ 167.217932] R10: 0000000000000004 R11: 0000000000000000 R12: ffff8880a4259100 [ 167.225317] R13: ffff8880a0d2fa68 R14: ffffffff83a5a150 R15: ffff888086edb220 [ 167.232584] FS: 00007fc2f73be700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 167.240802] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 167.246666] CR2: 0000000000000000 CR3: 00000000a46c2000 CR4: 00000000001406f0 [ 167.253931] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 167.261197] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 167.268460] Call Trace: [ 167.271039] ? ima_file_free+0xb6/0x460 [ 167.275011] ? do_tty_hangup+0x30/0x30 [ 167.278893] __fput+0x2ce/0x890 [ 167.282160] task_work_run+0x148/0x1c0 [ 167.286048] exit_to_usermode_loop+0x251/0x2a0 [ 167.290653] do_syscall_64+0x538/0x620 [ 167.294531] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 167.299709] RIP: 0033:0x45d5b9 [ 167.302887] 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 [ 167.321863] RSP: 002b:00007fc2f73bdc78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e9 [ 167.329571] RAX: 0000000000000000 RBX: 0000000000002ac0 RCX: 000000000045d5b9 [ 167.336841] RDX: 0000000000000005 RSI: 0000000000000001 RDI: 0000000000000004 [ 167.344111] RBP: 000000000118cf88 R08: 0000000000000000 R09: 0000000000000000 [ 167.351381] R10: 0000000020000040 R11: 0000000000000246 R12: 000000000118cf4c [ 167.358653] R13: 00007fff17a71b7f R14: 00007fc2f73be9c0 R15: 000000000118cf4c [ 167.365939] Modules linked in: [ 167.372595] ---[ end trace 20f624a1040b0645 ]--- [ 167.377652] RIP: 0010:tty_release+0xfb/0xf60 [ 167.382142] Code: 48 c1 ea 03 80 3c 02 00 0f 85 3a 0d 00 00 48 8b 04 24 48 8b 98 90 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 d5 0c 00 00 48 8b 04 24 4c 8b 23 48 8d 78 20 48 [ 167.401802] RSP: 0018:ffff88808b787dc0 EFLAGS: 00010246 [ 167.407228] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff83a58587 [ 167.414593] RDX: 0000000000000000 RSI: ffffffff83a5a212 RDI: 0000000000000004 [ 167.421861] RBP: ffff8880a12bac80 R08: 0000000000000000 R09: 0000000000000000 [ 167.429202] R10: 0000000000000004 R11: 0000000000000000 R12: ffff8880a4259100 [ 167.436727] R13: ffff8880a0d2fa68 R14: ffffffff83a5a150 R15: ffff888086edb220 [ 167.443987] FS: 00007fc2f73be700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 167.452260] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 167.458212] CR2: 00007fc2f739cdb8 CR3: 00000000a46c2000 CR4: 00000000001406e0 [ 167.465592] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 167.472882] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 167.480216] Kernel panic - not syncing: Fatal exception [ 167.486995] Kernel Offset: disabled [ 167.490611] Rebooting in 86400 seconds..