[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.170' (ECDSA) to the list of known hosts. 2020/09/03 12:19:48 parsed 1 programs 2020/09/03 12:19:49 executed programs: 0 syzkaller login: [ 148.314565] audit: type=1400 audit(1599135589.195:8): avc: denied { execmem } for pid=6475 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 149.396432] IPVS: ftp: loaded support on port[0] = 21 [ 149.522859] chnl_net:caif_netlink_parms(): no params data found [ 149.699969] bridge0: port 1(bridge_slave_0) entered blocking state [ 149.706807] bridge0: port 1(bridge_slave_0) entered disabled state [ 149.713782] device bridge_slave_0 entered promiscuous mode [ 149.722713] bridge0: port 2(bridge_slave_1) entered blocking state [ 149.729636] bridge0: port 2(bridge_slave_1) entered disabled state [ 149.736914] device bridge_slave_1 entered promiscuous mode [ 149.753943] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 149.762764] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 149.781515] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 149.788892] team0: Port device team_slave_0 added [ 149.794306] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 149.802499] team0: Port device team_slave_1 added [ 149.817617] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 149.823980] 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. [ 149.850060] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 149.861854] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 149.868509] 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. [ 149.894120] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 149.905471] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 149.912777] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 149.932706] device hsr_slave_0 entered promiscuous mode [ 149.938424] device hsr_slave_1 entered promiscuous mode [ 149.944329] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 149.952334] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 150.018864] bridge0: port 2(bridge_slave_1) entered blocking state [ 150.025491] bridge0: port 2(bridge_slave_1) entered forwarding state [ 150.032194] bridge0: port 1(bridge_slave_0) entered blocking state [ 150.038584] bridge0: port 1(bridge_slave_0) entered forwarding state [ 150.070453] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 150.077855] 8021q: adding VLAN 0 to HW filter on device bond0 [ 150.087047] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 150.095697] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 150.103617] bridge0: port 1(bridge_slave_0) entered disabled state [ 150.110894] bridge0: port 2(bridge_slave_1) entered disabled state [ 150.118174] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 150.129198] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 150.135424] 8021q: adding VLAN 0 to HW filter on device team0 [ 150.144178] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 150.151920] bridge0: port 1(bridge_slave_0) entered blocking state [ 150.158313] bridge0: port 1(bridge_slave_0) entered forwarding state [ 150.168387] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 150.176316] bridge0: port 2(bridge_slave_1) entered blocking state [ 150.182634] bridge0: port 2(bridge_slave_1) entered forwarding state [ 150.203149] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 150.212975] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 150.223887] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 150.231442] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 150.239828] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 150.247692] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 150.255443] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 150.262862] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 150.269961] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 150.283275] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 150.290941] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 150.297661] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 150.310637] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 150.322029] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 150.332074] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 150.361279] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 150.368497] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 150.376190] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 150.386057] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 150.393609] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 150.401208] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 150.411451] device veth0_vlan entered promiscuous mode [ 150.421275] device veth1_vlan entered promiscuous mode [ 150.427600] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 150.436713] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 150.448389] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 150.458193] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 150.465896] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 150.473037] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 150.482623] device veth0_macvtap entered promiscuous mode [ 150.489270] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 150.497682] device veth1_macvtap entered promiscuous mode [ 150.506166] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 150.515920] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 150.523257] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 150.533571] IPv6: ADDRCONF(NETDEV_UP): batadv_slave_0: link is not ready [ 150.540804] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 150.547812] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 150.555809] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 150.567064] IPv6: ADDRCONF(NETDEV_UP): batadv_slave_1: link is not ready [ 150.573901] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 150.581517] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 150.589462] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 151.445631] Bluetooth: hci0: command 0x0409 tx timeout 2020/09/03 12:19:54 executed programs: 135 [ 153.524525] Bluetooth: hci0: command 0x041b tx timeout [ 155.604539] Bluetooth: hci0: command 0x040f tx timeout [ 157.687997] Bluetooth: hci0: command 0x0419 tx timeout 2020/09/03 12:19:59 executed programs: 390 2020/09/03 12:20:04 executed programs: 646 2020/09/03 12:20:09 executed programs: 939 [ 169.808719] kasan: CONFIG_KASAN_INLINE enabled [ 169.813430] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 169.820955] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 169.827179] CPU: 1 PID: 10964 Comm: syz-executor.0 Not tainted 4.19.143-syzkaller #0 [ 169.835085] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 169.844422] RIP: 0010:tty_release+0xfb/0xf60 [ 169.848806] 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 [ 169.867684] RSP: 0018:ffff888091fb7dc0 EFLAGS: 00010246 [ 169.873022] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff83a585e7 [ 169.880288] RDX: 0000000000000000 RSI: ffffffff83a5a272 RDI: 0000000000000004 [ 169.887532] RBP: ffff888093073200 R08: 0000000000000000 R09: 0000000000000000 [ 169.894865] R10: 0000000000000004 R11: 0000000000000000 R12: ffff8880a438b100 [ 169.902113] R13: ffff8880921a25e8 R14: ffffffff83a5a1b0 R15: ffff8880907bbc20 [ 169.909359] FS: 00007feb61c08700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 169.917562] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 169.923417] CR2: 0000000000000000 CR3: 000000009647d000 CR4: 00000000001406e0 [ 169.930663] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 169.937908] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 169.945155] Call Trace: [ 169.947727] ? ima_file_free+0xb6/0x460 [ 169.951686] ? do_tty_hangup+0x30/0x30 [ 169.955590] __fput+0x2ce/0x890 [ 169.958847] task_work_run+0x148/0x1c0 [ 169.962715] exit_to_usermode_loop+0x251/0x2a0 [ 169.967274] do_syscall_64+0x538/0x620 [ 169.971168] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 169.976343] RIP: 0033:0x45d5b9 [ 169.979513] 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 [ 169.998389] RSP: 002b:00007feb61c07c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e9 [ 170.006072] RAX: 0000000000000000 RBX: 0000000000002ac0 RCX: 000000000045d5b9 [ 170.013330] RDX: 0000000000000005 RSI: 0000000000000001 RDI: 0000000000000004 [ 170.020577] RBP: 000000000118cf88 R08: 0000000000000000 R09: 0000000000000000 [ 170.027823] R10: 0000000020000040 R11: 0000000000000246 R12: 000000000118cf4c [ 170.035067] R13: 00007ffcc3fadbbf R14: 00007feb61c089c0 R15: 000000000118cf4c [ 170.042334] Modules linked in: [ 170.045600] ---[ end trace 5c85d4022cf29d58 ]--- [ 170.050359] RIP: 0010:tty_release+0xfb/0xf60 [ 170.054800] 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 [ 170.073764] RSP: 0018:ffff888091fb7dc0 EFLAGS: 00010246 [ 170.079117] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff83a585e7 [ 170.086785] RDX: 0000000000000000 RSI: ffffffff83a5a272 RDI: 0000000000000004 [ 170.094102] RBP: ffff888093073200 R08: 0000000000000000 R09: 0000000000000000 [ 170.101396] R10: 0000000000000004 R11: 0000000000000000 R12: ffff8880a438b100 [ 170.108693] R13: ffff8880921a25e8 R14: ffffffff83a5a1b0 R15: ffff8880907bbc20 [ 170.116004] FS: 00007feb61c08700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 170.124258] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 170.130139] CR2: 0000000000000000 CR3: 000000009647d000 CR4: 00000000001406e0 [ 170.137435] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 170.144730] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 170.151981] Kernel panic - not syncing: Fatal exception [ 170.158473] Kernel Offset: disabled [ 170.162084] Rebooting in 86400 seconds..