[ 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 '10.128.15.206' (ECDSA) to the list of known hosts. 2020/09/07 09:02:15 parsed 1 programs 2020/09/07 09:02:15 executed programs: 0 syzkaller login: [ 32.759618] audit: type=1400 audit(1599469335.696:8): avc: denied { execmem } for pid=6372 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 33.866797] IPVS: ftp: loaded support on port[0] = 21 [ 33.963426] chnl_net:caif_netlink_parms(): no params data found [ 34.126583] bridge0: port 1(bridge_slave_0) entered blocking state [ 34.133385] bridge0: port 1(bridge_slave_0) entered disabled state [ 34.140399] device bridge_slave_0 entered promiscuous mode [ 34.148258] bridge0: port 2(bridge_slave_1) entered blocking state [ 34.154736] bridge0: port 2(bridge_slave_1) entered disabled state [ 34.162086] device bridge_slave_1 entered promiscuous mode [ 34.177913] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 34.187330] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 34.205142] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 34.212352] team0: Port device team_slave_0 added [ 34.217797] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 34.225161] team0: Port device team_slave_1 added [ 34.240063] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 34.246385] 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. [ 34.271629] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 34.283158] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 34.289391] 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. [ 34.314630] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 34.325194] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 34.332911] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 34.351241] device hsr_slave_0 entered promiscuous mode [ 34.356814] device hsr_slave_1 entered promiscuous mode [ 34.363038] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 34.370031] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 34.432638] bridge0: port 2(bridge_slave_1) entered blocking state [ 34.439055] bridge0: port 2(bridge_slave_1) entered forwarding state [ 34.446015] bridge0: port 1(bridge_slave_0) entered blocking state [ 34.452413] bridge0: port 1(bridge_slave_0) entered forwarding state [ 34.483129] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 34.489487] 8021q: adding VLAN 0 to HW filter on device bond0 [ 34.498592] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 34.507228] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 34.526300] bridge0: port 1(bridge_slave_0) entered disabled state [ 34.533532] bridge0: port 2(bridge_slave_1) entered disabled state [ 34.544811] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 34.551567] 8021q: adding VLAN 0 to HW filter on device team0 [ 34.559699] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 34.567890] bridge0: port 1(bridge_slave_0) entered blocking state [ 34.574292] bridge0: port 1(bridge_slave_0) entered forwarding state [ 34.584965] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 34.592601] bridge0: port 2(bridge_slave_1) entered blocking state [ 34.598929] bridge0: port 2(bridge_slave_1) entered forwarding state [ 34.614029] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 34.622027] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 34.632657] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 34.645620] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 34.655722] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 34.667330] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 34.674260] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 34.682691] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 34.690120] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 34.701910] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 34.711074] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 34.717737] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 34.726220] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 34.777824] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 34.788917] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 34.816115] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 34.823203] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 34.829611] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 34.839749] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 34.847945] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 34.854943] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 34.864112] device veth0_vlan entered promiscuous mode [ 34.872877] device veth1_vlan entered promiscuous mode [ 34.878681] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 34.888095] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 34.899166] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 34.910475] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 34.917816] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 34.926748] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 34.936688] device veth0_macvtap entered promiscuous mode [ 34.944496] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 34.952005] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 34.959080] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 34.968431] device veth1_macvtap entered promiscuous mode [ 34.977221] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 34.986796] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 34.995958] IPv6: ADDRCONF(NETDEV_UP): batadv_slave_0: link is not ready [ 35.003463] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 35.010087] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 35.018209] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 35.028302] IPv6: ADDRCONF(NETDEV_UP): batadv_slave_1: link is not ready [ 35.035446] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 35.042155] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 35.049837] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 35.891459] Bluetooth: hci0 command 0x0409 tx timeout 2020/09/07 09:02:20 executed programs: 217 [ 37.969502] Bluetooth: hci0 command 0x041b tx timeout [ 40.059610] Bluetooth: hci0 command 0x040f tx timeout [ 42.127741] Bluetooth: hci0 command 0x0419 tx timeout 2020/09/07 09:02:25 executed programs: 824 [ 44.608311] NOHZ: local_softirq_pending 08 [ 46.210614] kasan: CONFIG_KASAN_INLINE enabled [ 46.215641] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 46.224204] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 46.230605] Modules linked in: [ 46.234354] CPU: 1 PID: 10418 Comm: syz-executor.0 Not tainted 4.14.196-syzkaller #0 [ 46.242647] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.252263] task: ffff8880a8172140 task.stack: ffff8880a72d0000 [ 46.258321] RIP: 0010:__sock_release+0xbb/0x2b0 [ 46.262976] RSP: 0018:ffff8880a72d7dc0 EFLAGS: 00010202 [ 46.268666] RAX: dffffc0000000000 RBX: ffff88807f314640 RCX: 0000000000000884 [ 46.276153] RDX: 0000000000000002 RSI: 0000000000000001 RDI: 0000000000000010 [ 46.283605] RBP: ffff88807f314750 R08: ffffffff8a07dda0 R09: 000000000004044d [ 46.291157] R10: ffff8880a81729c8 R11: ffff8880a8172140 R12: 0000000000000000 [ 46.298810] R13: ffff88807f314668 R14: 0000000000000000 R15: ffff8880a9635ad0 [ 46.306170] FS: 00007fabdeaa7700(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 [ 46.314443] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 46.320541] CR2: 00007fb79f75f000 CR3: 0000000090adc000 CR4: 00000000001406e0 [ 46.327895] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 46.335335] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 46.342808] Call Trace: [ 46.345408] ? __sock_release+0x2b0/0x2b0 [ 46.349553] sock_close+0x15/0x20 [ 46.353029] __fput+0x25f/0x7a0 [ 46.356620] task_work_run+0x11f/0x190 [ 46.360758] exit_to_usermode_loop+0x1ad/0x200 [ 46.365891] do_syscall_64+0x4a3/0x640 [ 46.369867] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 46.375095] RIP: 0033:0x45d5b9 [ 46.378277] RSP: 002b:00007fabdeaa6c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e9 [ 46.386150] RAX: 0000000000000000 RBX: 0000000000002ac0 RCX: 000000000045d5b9 [ 46.393549] RDX: 0000000000000005 RSI: 0000000000000001 RDI: 0000000000000006 [ 46.400941] RBP: 000000000118cf88 R08: 0000000000000000 R09: 0000000000000000 [ 46.408254] R10: 0000000020000080 R11: 0000000000000246 R12: 000000000118cf4c [ 46.415654] R13: 00007ffd196950ef R14: 00007fabdeaa79c0 R15: 000000000118cf4c [ 46.423154] Code: fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 d5 01 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 63 28 49 8d 7c 24 10 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 be 01 00 00 48 89 df 41 ff 54 24 10 48 8d 7b [ 46.442417] RIP: __sock_release+0xbb/0x2b0 RSP: ffff8880a72d7dc0 [ 46.456240] ---[ end trace f466b6735ff12496 ]--- [ 46.461519] Kernel panic - not syncing: Fatal exception [ 46.468403] Kernel Offset: disabled [ 46.472026] Rebooting in 86400 seconds..