[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c.
[   51.372332][   T27] audit: type=1800 audit(1582437618.487:25): pid=8538 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0
[   51.391381][   T27] audit: type=1800 audit(1582437618.487:26): pid=8538 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0
[   51.417636][   T27] audit: type=1800 audit(1582437618.487:27): pid=8538 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0
[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

Warning: Permanently added '10.128.1.8' (ECDSA) to the list of known hosts.
2020/02/23 06:16:28 parsed 1 programs
2020/02/23 06:16:30 executed programs: 0
syzkaller login: [ 1023.118869][ T8708] IPVS: ftp: loaded support on port[0] = 21
[ 1023.166461][ T8708] chnl_net:caif_netlink_parms(): no params data found
[ 1023.209340][ T8708] bridge0: port 1(bridge_slave_0) entered blocking state
[ 1023.216794][ T8708] bridge0: port 1(bridge_slave_0) entered disabled state
[ 1023.224628][ T8708] device bridge_slave_0 entered promiscuous mode
[ 1023.232758][ T8708] bridge0: port 2(bridge_slave_1) entered blocking state
[ 1023.240050][ T8708] bridge0: port 2(bridge_slave_1) entered disabled state
[ 1023.247673][ T8708] device bridge_slave_1 entered promiscuous mode
[ 1023.262101][ T8708] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[ 1023.272604][ T8708] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[ 1023.290184][ T8708] team0: Port device team_slave_0 added
[ 1023.297697][ T8708] team0: Port device team_slave_1 added
[ 1023.310598][ T8708] batman_adv: batadv0: Adding interface: batadv_slave_0
[ 1023.317659][ T8708] 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.
[ 1023.343608][ T8708] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active
[ 1023.355597][ T8708] batman_adv: batadv0: Adding interface: batadv_slave_1
[ 1023.362620][ T8708] 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.
[ 1023.388677][ T8708] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active
[ 1023.449883][ T8708] device hsr_slave_0 entered promiscuous mode
[ 1023.487921][ T8708] device hsr_slave_1 entered promiscuous mode
[ 1023.579188][ T8708] netdevsim netdevsim0 netdevsim0: renamed from eth0
[ 1023.619860][ T8708] netdevsim netdevsim0 netdevsim1: renamed from eth1
[ 1023.659974][ T8708] netdevsim netdevsim0 netdevsim2: renamed from eth2
[ 1023.700054][ T8708] netdevsim netdevsim0 netdevsim3: renamed from eth3
[ 1023.750226][ T8708] bridge0: port 2(bridge_slave_1) entered blocking state
[ 1023.757412][ T8708] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 1023.765192][ T8708] bridge0: port 1(bridge_slave_0) entered blocking state
[ 1023.772325][ T8708] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 1023.806529][ T8708] 8021q: adding VLAN 0 to HW filter on device bond0
[ 1023.821799][ T8714] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[ 1023.842382][ T8714] bridge0: port 1(bridge_slave_0) entered disabled state
[ 1023.861314][ T8714] bridge0: port 2(bridge_slave_1) entered disabled state
[ 1023.869320][ T8714] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready
[ 1023.881563][ T8708] 8021q: adding VLAN 0 to HW filter on device team0
[ 1023.902265][ T3157] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[ 1023.910816][ T3157] bridge0: port 1(bridge_slave_0) entered blocking state
[ 1023.918212][ T3157] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 1023.939456][ T8715] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[ 1023.948778][ T8715] bridge0: port 2(bridge_slave_1) entered blocking state
[ 1023.955826][ T8715] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 1023.963797][ T8715] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready
[ 1023.972944][ T8715] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready
[ 1023.986516][ T8708] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network
[ 1023.997409][ T8708] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network
[ 1024.009754][ T8714] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready
[ 1024.017453][ T8714] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
[ 1024.026101][ T8714] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
[ 1024.035360][ T8714] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready
[ 1024.050892][ T3157] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
[ 1024.058501][ T3157] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
[ 1024.070155][ T8708] 8021q: adding VLAN 0 to HW filter on device batadv0
[ 1024.086784][ T8714] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready
[ 1024.105015][ T8708] device veth0_vlan entered promiscuous mode
[ 1024.112222][ T3156] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready
[ 1024.120483][ T3156] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready
[ 1024.128244][ T3156] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready
[ 1024.140247][ T8708] device veth1_vlan entered promiscuous mode
[ 1024.157570][ T8714] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready
[ 1024.165536][ T8714] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready
[ 1024.174277][ T8714] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready
[ 1024.185481][ T8708] device veth0_macvtap entered promiscuous mode
[ 1024.195150][ T8708] device veth1_macvtap entered promiscuous mode
[ 1024.210781][ T8708] batman_adv: batadv0: Interface activated: batadv_slave_0
[ 1024.218587][ T3156] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready
[ 1024.227138][ T3156] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
[ 1024.242380][ T8708] batman_adv: batadv0: Interface activated: batadv_slave_1
[ 1024.251048][ T8715] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready
[ 1024.259651][ T8715] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
2020/02/23 06:16:35 executed programs: 166
2020/02/23 06:16:40 executed programs: 410
[ 1034.752142][T10686] BUG: kernel NULL pointer dereference, address: 0000000000000000
[ 1034.760018][T10686] #PF: supervisor instruction fetch in kernel mode
[ 1034.766507][T10686] #PF: error_code(0x0010) - not-present page
[ 1034.772469][T10686] PGD a0113067 P4D a0113067 PUD a8771067 PMD 0 
[ 1034.778690][T10686] Oops: 0010 [#1] PREEMPT SMP KASAN
[ 1034.783871][T10686] CPU: 0 PID: 10686 Comm: syz-executor.0 Not tainted 5.6.0-rc2-syzkaller #0
[ 1034.792566][T10686] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 1034.802643][T10686] RIP: 0010:0x0
[ 1034.806095][T10686] Code: Bad RIP value.
[ 1034.810147][T10686] RSP: 0018:ffffc9000281fce0 EFLAGS: 00010246
[ 1034.816207][T10686] RAX: 1ffffffff15f48ac RBX: ffffffff8afa4560 RCX: dffffc0000000000
[ 1034.824163][T10686] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8880a69a8f40
[ 1034.832153][T10686] RBP: ffffc9000281fd10 R08: ffffffff86ed9b0c R09: ffffed1014d351f5
[ 1034.840109][T10686] R10: ffffed1014d351f5 R11: 0000000000000000 R12: ffff8880920d3098
[ 1034.848062][T10686] R13: 1ffff1101241a613 R14: ffff8880a69a8f40 R15: 0000000000000000
[ 1034.856021][T10686] FS:  00007f2ae75db700(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000
[ 1034.864950][T10686] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1034.871609][T10686] CR2: ffffffffffffffd6 CR3: 00000000a3b85000 CR4: 00000000001406f0
[ 1034.879572][T10686] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1034.887538][T10686] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1034.895498][T10686] Call Trace:
[ 1034.898926][T10686]  inet_release+0x165/0x1c0
[ 1034.903495][T10686]  sock_close+0xe1/0x260
[ 1034.907778][T10686]  ? sock_mmap+0xa0/0xa0
[ 1034.912103][T10686]  __fput+0x2e4/0x740
[ 1034.916079][T10686]  ____fput+0x15/0x20
[ 1034.920195][T10686]  task_work_run+0x176/0x1b0
[ 1034.924795][T10686]  prepare_exit_to_usermode+0x480/0x5b0
[ 1034.930333][T10686]  syscall_return_slowpath+0x113/0x4a0
[ 1034.935830][T10686]  ? __x64_sys_setsockopt+0xbf/0xd0
[ 1034.941013][T10686]  do_syscall_64+0x11f/0x1c0
[ 1034.945664][T10686]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 1034.951539][T10686] RIP: 0033:0x45c429
[ 1034.955420][T10686] Code: ad b6 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 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
[ 1034.975048][T10686] RSP: 002b:00007f2ae75dac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1034.983464][T10686] RAX: 0000000000000000 RBX: 00007f2ae75db6d4 RCX: 000000000045c429
[ 1034.991429][T10686] RDX: 0000000000000001 RSI: 000000000000011a RDI: 0000000000000004
[ 1034.999379][T10686] RBP: 000000000076bf20 R08: 0000000000000038 R09: 0000000000000000
[ 1035.007340][T10686] R10: 0000000020000180 R11: 0000000000000246 R12: 00000000ffffffff
[ 1035.015304][T10686] R13: 0000000000000a9d R14: 00000000004ccfb4 R15: 000000000076bf2c
[ 1035.023268][T10686] Modules linked in:
[ 1035.027141][T10686] CR2: 0000000000000000
[ 1035.031581][T10686] ---[ end trace 82567b5207e87bae ]---
[ 1035.037049][T10686] RIP: 0010:0x0
[ 1035.040863][T10686] Code: Bad RIP value.
[ 1035.044921][T10686] RSP: 0018:ffffc9000281fce0 EFLAGS: 00010246
[ 1035.051027][T10686] RAX: 1ffffffff15f48ac RBX: ffffffff8afa4560 RCX: dffffc0000000000
[ 1035.059031][T10686] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8880a69a8f40
[ 1035.067046][T10686] RBP: ffffc9000281fd10 R08: ffffffff86ed9b0c R09: ffffed1014d351f5
[ 1035.075056][T10686] R10: ffffed1014d351f5 R11: 0000000000000000 R12: ffff8880920d3098
[ 1035.083054][T10686] R13: 1ffff1101241a613 R14: ffff8880a69a8f40 R15: 0000000000000000
[ 1035.091068][T10686] FS:  00007f2ae75db700(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000
[ 1035.100264][T10686] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1035.106895][T10686] CR2: ffffffffffffffd6 CR3: 00000000a3b85000 CR4: 00000000001406f0
[ 1035.114925][T10686] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1035.123037][T10686] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1035.131065][T10686] Kernel panic - not syncing: Fatal exception
[ 1035.138566][T10686] Kernel Offset: disabled
[ 1035.142910][T10686] Rebooting in 86400 seconds..