[   51.397434][   T26] audit: type=1800 audit(1566877329.439:21): pid=9040 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0
[   51.443843][   T26] audit: type=1800 audit(1566877329.449:22): pid=9040 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="motd" dev="sda1" ino=2447 res=0
[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[   52.463437][ T9107] sshd (9107) used greatest stack depth: 24584 bytes left
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

Warning: Permanently added '10.128.0.122' (ECDSA) to the list of known hosts.
2019/08/27 03:53:35 parsed 1 programs
2019/08/27 03:53:36 executed programs: 0
syzkaller login: [  738.503923][ T9205] IPVS: ftp: loaded support on port[0] = 21
[  738.539128][ T9205] chnl_net:caif_netlink_parms(): no params data found
[  738.557011][ T9205] bridge0: port 1(bridge_slave_0) entered blocking state
[  738.565215][ T9205] bridge0: port 1(bridge_slave_0) entered disabled state
[  738.572817][ T9205] device bridge_slave_0 entered promiscuous mode
[  738.579935][ T9205] bridge0: port 2(bridge_slave_1) entered blocking state
[  738.586974][ T9205] bridge0: port 2(bridge_slave_1) entered disabled state
[  738.594388][ T9205] device bridge_slave_1 entered promiscuous mode
[  738.605726][ T9205] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[  738.615401][ T9205] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[  738.629147][ T9205] team0: Port device team_slave_0 added
[  738.635307][ T9205] team0: Port device team_slave_1 added
[  738.680247][ T9205] device hsr_slave_0 entered promiscuous mode
[  738.729240][ T9205] device hsr_slave_1 entered promiscuous mode
[  738.773294][ T9205] bridge0: port 2(bridge_slave_1) entered blocking state
[  738.780383][ T9205] bridge0: port 2(bridge_slave_1) entered forwarding state
[  738.787650][ T9205] bridge0: port 1(bridge_slave_0) entered blocking state
[  738.794797][ T9205] bridge0: port 1(bridge_slave_0) entered forwarding state
[  738.816221][ T9205] 8021q: adding VLAN 0 to HW filter on device bond0
[  738.825217][ T9207] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[  738.844165][ T9207] bridge0: port 1(bridge_slave_0) entered disabled state
[  738.851562][ T9207] bridge0: port 2(bridge_slave_1) entered disabled state
[  738.859578][ T9207] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready
[  738.868968][ T9205] 8021q: adding VLAN 0 to HW filter on device team0
[  738.889755][ T2871] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[  738.897927][ T2871] bridge0: port 1(bridge_slave_0) entered blocking state
[  738.904971][ T2871] bridge0: port 1(bridge_slave_0) entered forwarding state
[  738.912747][ T2871] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[  738.920970][ T2871] bridge0: port 2(bridge_slave_1) entered blocking state
[  738.927977][ T2871] bridge0: port 2(bridge_slave_1) entered forwarding state
[  738.939393][ T3025] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready
[  738.947606][ T3025] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready
[  738.956307][ T3025] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready
[  738.965019][   T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
[  738.976192][ T9205] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network
[  738.987713][ T9205] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready
[  738.995616][ T3025] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
[  739.008111][ T9205] 8021q: adding VLAN 0 to HW filter on device batadv0
2019/08/27 03:53:41 executed programs: 31
2019/08/27 03:53:46 executed programs: 67
2019/08/27 03:53:51 executed programs: 100
2019/08/27 03:53:56 executed programs: 135
2019/08/27 03:54:01 executed programs: 171
2019/08/27 03:54:06 executed programs: 205
2019/08/27 03:54:11 executed programs: 241
2019/08/27 03:54:17 executed programs: 274
2019/08/27 03:54:22 executed programs: 308
2019/08/27 03:54:27 executed programs: 344
2019/08/27 03:54:32 executed programs: 379
2019/08/27 03:54:37 executed programs: 413
2019/08/27 03:54:42 executed programs: 449
2019/08/27 03:54:47 executed programs: 483
2019/08/27 03:54:52 executed programs: 519
2019/08/27 03:54:57 executed programs: 555
2019/08/27 03:55:02 executed programs: 590
2019/08/27 03:55:08 executed programs: 625
2019/08/27 03:55:13 executed programs: 661
2019/08/27 03:55:18 executed programs: 696
2019/08/27 03:55:23 executed programs: 732
2019/08/27 03:55:28 executed programs: 768
2019/08/27 03:55:33 executed programs: 804
2019/08/27 03:55:38 executed programs: 839
2019/08/27 03:55:43 executed programs: 872
2019/08/27 03:55:48 executed programs: 908
2019/08/27 03:55:53 executed programs: 943
2019/08/27 03:55:58 executed programs: 978
2019/08/27 03:56:04 executed programs: 1013
2019/08/27 03:56:09 executed programs: 1049
2019/08/27 03:56:14 executed programs: 1083
2019/08/27 03:56:19 executed programs: 1118
2019/08/27 03:56:24 executed programs: 1153
2019/08/27 03:56:29 executed programs: 1188
2019/08/27 03:56:34 executed programs: 1223
2019/08/27 03:56:39 executed programs: 1258
2019/08/27 03:56:44 executed programs: 1293
2019/08/27 03:56:49 executed programs: 1328
2019/08/27 03:56:55 executed programs: 1363
2019/08/27 03:57:00 executed programs: 1397
2019/08/27 03:57:05 executed programs: 1433
[ 1093.709114][ T1057] INFO: task syz-executor.0:17871 blocked for more than 143 seconds.
[ 1093.717316][ T1057]       Not tainted 5.3.0-rc6 #93
[ 1093.722600][ T1057] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 1093.731292][ T1057] syz-executor.0  D28696 17871   9205 0x00004006
[ 1093.737646][ T1057] Call Trace:
[ 1093.741147][ T1057]  __schedule+0x877/0xc50
[ 1093.745463][ T1057]  schedule+0x131/0x1e0
[ 1093.749667][ T1057]  perf_event_free_task+0x54a/0x630
[ 1093.754890][ T1057]  ? init_wait_var_entry+0x150/0x150
[ 1093.760202][ T1057]  copy_process+0x3ad6/0x5ac0
[ 1093.764866][ T1057]  ? __fd_install+0x280/0x4f0
[ 1093.769587][ T1057]  _do_fork+0x13f/0x5b0
[ 1093.773735][ T1057]  ? debug_smp_processor_id+0x1c/0x20
[ 1093.779321][ T1057]  ? fpregs_assert_state_consistent+0xb7/0xe0
[ 1093.785410][ T1057]  __x64_sys_clone+0x1ec/0x230
[ 1093.790336][ T1057]  do_syscall_64+0xfe/0x140
[ 1093.794871][ T1057]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 1093.800791][ T1057] RIP: 0033:0x459879
[ 1093.804670][ T1057] Code: Bad RIP value.
[ 1093.808715][ T1057] RSP: 002b:00007f8dea6c2c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
[ 1093.817171][ T1057] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000459879
[ 1093.825143][ T1057] RDX: 9999999999999999 RSI: 0000000000000000 RDI: 0000002102001ffe
[ 1093.833157][ T1057] RBP: 000000000075bf20 R08: ffffffffffffffff R09: 0000000000000000
[ 1093.841154][ T1057] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8dea6c36d4
[ 1093.849173][ T1057] R13: 00000000004bfd46 R14: 00000000004d1af8 R15: 00000000ffffffff
[ 1093.857143][ T1057] INFO: lockdep is turned off.
[ 1093.861938][ T1057] NMI backtrace for cpu 1
[ 1093.866351][ T1057] CPU: 1 PID: 1057 Comm: khungtaskd Not tainted 5.3.0-rc6 #93
[ 1093.873781][ T1057] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 1093.884048][ T1057] Call Trace:
[ 1093.887321][ T1057]  dump_stack+0x1d8/0x2f8
[ 1093.891636][ T1057]  nmi_cpu_backtrace+0xaf/0x1a0
[ 1093.896467][ T1057]  ? nmi_trigger_cpumask_backtrace+0x16d/0x290
[ 1093.902768][ T1057]  ? arch_trigger_cpumask_backtrace+0x20/0x20
[ 1093.908817][ T1057]  nmi_trigger_cpumask_backtrace+0x174/0x290
[ 1093.914843][ T1057]  arch_trigger_cpumask_backtrace+0x10/0x20
[ 1093.920824][ T1057]  trigger_all_cpu_backtrace+0x17/0x20
[ 1093.926270][ T1057]  watchdog+0xbb9/0xbd0
[ 1093.930409][ T1057]  kthread+0x332/0x350
[ 1093.934449][ T1057]  ? hungtask_pm_notify+0x50/0x50
[ 1093.939551][ T1057]  ? kthread_blkcg+0xe0/0xe0
[ 1093.944125][ T1057]  ret_from_fork+0x24/0x30
[ 1093.948616][ T1057] Sending NMI from CPU 1 to CPUs 0:
[ 1093.953884][    C0] NMI backtrace for cpu 0 skipped: idling at native_safe_halt+0xe/0x10
[ 1093.955125][ T1057] Kernel panic - not syncing: hung_task: blocked tasks
[ 1093.969011][ T1057] CPU: 1 PID: 1057 Comm: khungtaskd Not tainted 5.3.0-rc6 #93
[ 1093.976580][ T1057] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 1093.986615][ T1057] Call Trace:
[ 1093.989892][ T1057]  dump_stack+0x1d8/0x2f8
[ 1093.994359][ T1057]  panic+0x25c/0x799
[ 1093.998364][ T1057]  ? nmi_trigger_cpumask_backtrace+0x21a/0x290
[ 1094.004510][ T1057]  watchdog+0xbcc/0xbd0
[ 1094.008658][ T1057]  kthread+0x332/0x350
[ 1094.012707][ T1057]  ? hungtask_pm_notify+0x50/0x50
[ 1094.017720][ T1057]  ? kthread_blkcg+0xe0/0xe0
[ 1094.022287][ T1057]  ret_from_fork+0x24/0x30
[ 1094.027812][ T1057] Kernel Offset: disabled
[ 1094.032126][ T1057] Rebooting in 86400 seconds..