[ 72.544834][ T26] audit: type=1800 audit(1565000047.972:27): pid=10172 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 72.567156][ T26] audit: type=1800 audit(1565000047.982:28): pid=10172 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 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. [ 73.371725][ T26] audit: type=1800 audit(1565000048.872:29): pid=10172 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 73.396657][ T26] audit: type=1800 audit(1565000048.872:30): pid=10172 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.10.23' (ECDSA) to the list of known hosts. 2019/08/05 10:29:36 parsed 1 programs 2019/08/05 10:29:37 executed programs: 0 syzkaller login: [ 1002.182358][T10346] IPVS: ftp: loaded support on port[0] = 21 [ 1002.231085][T10346] chnl_net:caif_netlink_parms(): no params data found [ 1002.252786][T10346] bridge0: port 1(bridge_slave_0) entered blocking state [ 1002.260239][T10346] bridge0: port 1(bridge_slave_0) entered disabled state [ 1002.267821][T10346] device bridge_slave_0 entered promiscuous mode [ 1002.274972][T10346] bridge0: port 2(bridge_slave_1) entered blocking state [ 1002.282151][T10346] bridge0: port 2(bridge_slave_1) entered disabled state [ 1002.289679][T10346] device bridge_slave_1 entered promiscuous mode [ 1002.303879][T10346] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 1002.314462][T10346] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 1002.330586][T10346] team0: Port device team_slave_0 added [ 1002.337655][T10346] team0: Port device team_slave_1 added [ 1002.398066][T10346] device hsr_slave_0 entered promiscuous mode [ 1002.436775][T10346] device hsr_slave_1 entered promiscuous mode [ 1002.491576][T10346] bridge0: port 2(bridge_slave_1) entered blocking state [ 1002.498655][T10346] bridge0: port 2(bridge_slave_1) entered forwarding state [ 1002.505937][T10346] bridge0: port 1(bridge_slave_0) entered blocking state [ 1002.513079][T10346] bridge0: port 1(bridge_slave_0) entered forwarding state [ 1002.536993][T10346] 8021q: adding VLAN 0 to HW filter on device bond0 [ 1002.548355][T10350] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 1002.557149][T10350] bridge0: port 1(bridge_slave_0) entered disabled state [ 1002.564628][T10350] bridge0: port 2(bridge_slave_1) entered disabled state [ 1002.573362][T10350] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 1002.583503][T10346] 8021q: adding VLAN 0 to HW filter on device team0 [ 1002.592667][ T3348] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 1002.601229][ T3348] bridge0: port 1(bridge_slave_0) entered blocking state [ 1002.608333][ T3348] bridge0: port 1(bridge_slave_0) entered forwarding state [ 1002.628072][T10350] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 1002.636888][T10350] bridge0: port 2(bridge_slave_1) entered blocking state [ 1002.643994][T10350] bridge0: port 2(bridge_slave_1) entered forwarding state [ 1002.651934][T10350] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 1002.660350][T10350] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 1002.668803][T10350] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 1002.676997][T10350] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 1002.685141][T10350] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 1002.694438][T10346] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 1002.709523][T10346] 8021q: adding VLAN 0 to HW filter on device batadv0 2019/08/05 10:29:42 executed programs: 29 2019/08/05 10:29:47 executed programs: 62 2019/08/05 10:29:52 executed programs: 94 2019/08/05 10:29:57 executed programs: 126 2019/08/05 10:30:02 executed programs: 160 2019/08/05 10:30:08 executed programs: 193 2019/08/05 10:30:13 executed programs: 225 2019/08/05 10:30:18 executed programs: 259 2019/08/05 10:30:23 executed programs: 293 [ 1195.346405][ T1057] INFO: task syz-executor.0:12214 blocked for more than 143 seconds. [ 1195.354631][ T1057] Not tainted 5.3.0-rc3 #98 [ 1195.360156][ T1057] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1195.369112][ T1057] syz-executor.0 D29072 12214 10346 0x00004006 [ 1195.375454][ T1057] Call Trace: [ 1195.379248][ T1057] __schedule+0x755/0x1580 [ 1195.383803][ T1057] ? __sched_text_start+0x8/0x8 [ 1195.388748][ T1057] ? prepare_to_wait_event+0x12b/0x730 [ 1195.394320][ T1057] schedule+0xa8/0x270 [ 1195.398846][ T1057] perf_event_free_task+0x50d/0x6d0 [ 1195.404278][ T1057] ? perf_event_exit_task+0xbc0/0xbc0 [ 1195.409726][ T1057] ? init_wait_var_entry+0x1b0/0x1b0 [ 1195.415200][ T1057] copy_process+0x45d4/0x6b00 [ 1195.420318][ T1057] ? __cleanup_sighand+0x60/0x60 [ 1195.425284][ T1057] _do_fork+0x146/0xfa0 [ 1195.429481][ T1057] ? copy_init_mm+0x20/0x20 [ 1195.433997][ T1057] ? __kasan_check_read+0x11/0x20 [ 1195.439436][ T1057] ? _copy_to_user+0x118/0x160 [ 1195.444313][ T1057] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1195.450665][ T1057] ? put_timespec64+0xda/0x140 [ 1195.456445][ T1057] __x64_sys_clone+0x18d/0x250 [ 1195.461293][ T1057] ? __ia32_sys_vfork+0xc0/0xc0 [ 1195.466138][ T1057] ? trace_hardirqs_off_caller+0x65/0x230 [ 1195.472056][ T1057] ? trace_hardirqs_on+0x67/0x240 [ 1195.477265][ T1057] do_syscall_64+0xfd/0x6a0 [ 1195.481931][ T1057] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1195.487885][ T1057] RIP: 0033:0x459829 [ 1195.491779][ T1057] Code: dd fe ff ff cc cc cc cc cc cc cc cc cc cc cc cc cc 64 48 8b 0c 25 f8 ff ff ff 48 3b 61 10 76 68 48 83 ec 28 48 89 6c 24 20 48 <8d> 6c 24 20 48 8b 44 24 30 48 89 04 24 48 8b 4c 24 38 48 89 4c 24 [ 1195.511756][ T1057] RSP: 002b:00007f4bb2c45c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 [ 1195.521237][ T1057] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000459829 [ 1195.529804][ T1057] RDX: 9999999999999999 RSI: 0000000000000000 RDI: 0000002102001ffe [ 1195.539191][ T1057] RBP: 000000000075bf20 R08: ffffffffffffffff R09: 0000000000000000 [ 1195.547626][ T1057] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f4bb2c466d4 [ 1195.555876][ T1057] R13: 00000000004bfce6 R14: 00000000004d1998 R15: 00000000ffffffff [ 1195.564334][ T1057] INFO: lockdep is turned off. [ 1195.569386][ T1057] NMI backtrace for cpu 0 [ 1195.573942][ T1057] CPU: 0 PID: 1057 Comm: khungtaskd Not tainted 5.3.0-rc3 #98 [ 1195.582482][ T1057] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1195.593074][ T1057] Call Trace: [ 1195.596521][ T1057] dump_stack+0x172/0x1f0 [ 1195.600859][ T1057] nmi_cpu_backtrace.cold+0x70/0xb2 [ 1195.606104][ T1057] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1195.612513][ T1057] ? lapic_can_unplug_cpu.cold+0x45/0x45 [ 1195.618302][ T1057] nmi_trigger_cpumask_backtrace+0x23b/0x28b [ 1195.624534][ T1057] arch_trigger_cpumask_backtrace+0x14/0x20 [ 1195.630458][ T1057] watchdog+0x9d0/0xef0 [ 1195.634627][ T1057] kthread+0x361/0x430 [ 1195.638839][ T1057] ? reset_hung_task_detector+0x30/0x30 [ 1195.645149][ T1057] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 1195.651745][ T1057] ret_from_fork+0x24/0x30 [ 1195.656358][ T1057] Sending NMI from CPU 0 to CPUs 1: [ 1195.661742][ C1] NMI backtrace for cpu 1 skipped: idling at native_safe_halt+0xe/0x10 [ 1195.662725][ T1057] Kernel panic - not syncing: hung_task: blocked tasks [ 1195.677228][ T1057] CPU: 0 PID: 1057 Comm: khungtaskd Not tainted 5.3.0-rc3 #98 [ 1195.684838][ T1057] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1195.695156][ T1057] Call Trace: [ 1195.698448][ T1057] dump_stack+0x172/0x1f0 [ 1195.702782][ T1057] panic+0x2dc/0x755 [ 1195.706712][ T1057] ? add_taint.cold+0x16/0x16 [ 1195.711391][ T1057] ? lapic_can_unplug_cpu.cold+0x45/0x45 [ 1195.717048][ T1057] ? ___preempt_schedule+0x16/0x20 [ 1195.722346][ T1057] ? nmi_trigger_cpumask_backtrace+0x21b/0x28b [ 1195.728770][ T1057] ? nmi_trigger_cpumask_backtrace+0x24c/0x28b [ 1195.734925][ T1057] ? nmi_trigger_cpumask_backtrace+0x256/0x28b [ 1195.741084][ T1057] ? nmi_trigger_cpumask_backtrace+0x21b/0x28b [ 1195.747304][ T1057] watchdog+0x9e1/0xef0 [ 1195.751578][ T1057] kthread+0x361/0x430 [ 1195.756114][ T1057] ? reset_hung_task_detector+0x30/0x30 [ 1195.762659][ T1057] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 1195.769002][ T1057] ret_from_fork+0x24/0x30 [ 1195.774908][ T1057] Kernel Offset: disabled [ 1195.779270][ T1057] Rebooting in 86400 seconds..