Starting Update UTMP about System Runlevel Changes... [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. 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 '10.128.0.134' (ECDSA) to the list of known hosts. 2020/09/07 12:10:07 parsed 1 programs 2020/09/07 12:10:07 executed programs: 0 syzkaller login: [ 34.843882] audit: type=1400 audit(1599480607.384:8): avc: denied { execmem } for pid=6382 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 35.922832] IPVS: ftp: loaded support on port[0] = 21 [ 36.030931] chnl_net:caif_netlink_parms(): no params data found [ 36.119033] bridge0: port 1(bridge_slave_0) entered blocking state [ 36.126079] bridge0: port 1(bridge_slave_0) entered disabled state [ 36.133073] device bridge_slave_0 entered promiscuous mode [ 36.141231] bridge0: port 2(bridge_slave_1) entered blocking state [ 36.148682] bridge0: port 2(bridge_slave_1) entered disabled state [ 36.156071] device bridge_slave_1 entered promiscuous mode [ 36.172223] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 36.181154] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 36.198899] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 36.206749] team0: Port device team_slave_0 added [ 36.212384] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 36.219910] team0: Port device team_slave_1 added [ 36.234934] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 36.241436] 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. [ 36.267393] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 36.278939] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 36.285740] 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. [ 36.311102] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 36.321713] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 36.329427] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 36.347568] device hsr_slave_0 entered promiscuous mode [ 36.353217] device hsr_slave_1 entered promiscuous mode [ 36.360062] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 36.367286] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 36.428199] bridge0: port 2(bridge_slave_1) entered blocking state [ 36.434798] bridge0: port 2(bridge_slave_1) entered forwarding state [ 36.441826] bridge0: port 1(bridge_slave_0) entered blocking state [ 36.448620] bridge0: port 1(bridge_slave_0) entered forwarding state [ 36.477868] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 36.484138] 8021q: adding VLAN 0 to HW filter on device bond0 [ 36.493447] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 36.503652] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 36.523165] bridge0: port 1(bridge_slave_0) entered disabled state [ 36.530809] bridge0: port 2(bridge_slave_1) entered disabled state [ 36.541200] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 36.547889] 8021q: adding VLAN 0 to HW filter on device team0 [ 36.556739] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 36.564523] bridge0: port 1(bridge_slave_0) entered blocking state [ 36.571150] bridge0: port 1(bridge_slave_0) entered forwarding state [ 36.580414] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 36.588204] bridge0: port 2(bridge_slave_1) entered blocking state [ 36.594680] bridge0: port 2(bridge_slave_1) entered forwarding state [ 36.613862] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 36.624393] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 36.636211] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 36.643559] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 36.651575] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 36.659226] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 36.667976] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 36.675603] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 36.682548] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 36.694842] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 36.702603] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 36.710034] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 36.720617] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 36.771906] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 36.781822] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 36.811818] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 36.819977] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 36.827882] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 36.838162] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 36.846281] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 36.853262] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 36.863057] device veth0_vlan entered promiscuous mode [ 36.872141] device veth1_vlan entered promiscuous mode [ 36.878792] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 36.887457] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 36.899912] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 36.909355] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 36.917218] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 36.924705] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 36.934579] device veth0_macvtap entered promiscuous mode [ 36.941688] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 36.951805] device veth1_macvtap entered promiscuous mode [ 36.961452] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 36.971176] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 36.981827] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 36.989801] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 36.998191] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 37.007217] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 37.016027] IPv6: ADDRCONF(NETDEV_UP): batadv_slave_1: link is not ready [ 37.022901] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 37.029828] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 37.037962] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 37.965494] Bluetooth: hci0 command 0x0409 tx timeout [ 38.292210] kasan: CONFIG_KASAN_INLINE enabled [ 38.298553] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 38.310477] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 38.316865] Modules linked in: [ 38.320175] CPU: 0 PID: 6901 Comm: syz-executor.0 Not tainted 4.14.196-syzkaller #0 [ 38.328139] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 38.337486] task: ffff88808d624380 task.stack: ffff88808bf78000 [ 38.344011] RIP: 0010:__sock_release+0xbb/0x2b0 [ 38.348830] RSP: 0018:ffff88808bf7fdc0 EFLAGS: 00010202 [ 38.354184] RAX: dffffc0000000000 RBX: ffff88807f0a7000 RCX: 000000000000267a [ 38.361497] RDX: 0000000000000002 RSI: 0000000000000001 RDI: 0000000000000010 [ 38.368757] RBP: ffff88807f0a7110 R08: ffffffff8a08cd50 R09: 0000000000040450 [ 38.376065] R10: ffff88808d624c08 R11: ffff88808d624380 R12: 0000000000000000 [ 38.383482] R13: ffff88807f0a7028 R14: 0000000000000000 R15: ffff88808d481310 [ 38.390917] FS: 00007f4212ff1700(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 [ 38.399423] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 38.405428] CR2: 00007f0040efd710 CR3: 000000008ea43000 CR4: 00000000001406f0 [ 38.412915] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 38.420330] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 38.427675] Call Trace: [ 38.430507] ? __sock_release+0x2b0/0x2b0 [ 38.434644] sock_close+0x15/0x20 [ 38.438089] __fput+0x25f/0x7a0 [ 38.441484] task_work_run+0x11f/0x190 [ 38.445368] exit_to_usermode_loop+0x1ad/0x200 [ 38.450169] do_syscall_64+0x4a3/0x640 [ 38.454655] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 38.459922] RIP: 0033:0x45d5b9 [ 38.463443] RSP: 002b:00007f4212ff0c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e9 [ 38.471803] RAX: 0000000000000000 RBX: 0000000000002ac0 RCX: 000000000045d5b9 [ 38.479258] RDX: 0000000000000005 RSI: 0000000000000001 RDI: 0000000000000006 [ 38.486828] RBP: 000000000118cf88 R08: 0000000000000000 R09: 0000000000000000 [ 38.494214] R10: 0000000020000080 R11: 0000000000000246 R12: 000000000118cf4c [ 38.501648] R13: 00007fffa4db9f4f R14: 00007f4212ff19c0 R15: 000000000118cf4c [ 38.508913] 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 [ 38.528532] RIP: __sock_release+0xbb/0x2b0 RSP: ffff88808bf7fdc0 [ 38.541311] ---[ end trace e91c167fd922f5ee ]--- [ 38.549238] Kernel panic - not syncing: Fatal exception [ 38.557055] Kernel Offset: disabled [ 38.560686] Rebooting in 86400 seconds..