[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 41.186400][ T26] audit: type=1800 audit(1556172528.111:25): pid=7811 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 41.215910][ T26] audit: type=1800 audit(1556172528.111:26): pid=7811 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 41.248133][ T26] audit: type=1800 audit(1556172528.121:27): pid=7811 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 '10.128.0.189' (ECDSA) to the list of known hosts. 2019/04/25 06:21:32 parsed 1 programs 2019/04/25 06:21:34 executed programs: 0 syzkaller login: [ 807.703223][ T7981] IPVS: ftp: loaded support on port[0] = 21 [ 807.765802][ T7981] chnl_net:caif_netlink_parms(): no params data found [ 807.797701][ T7981] bridge0: port 1(bridge_slave_0) entered blocking state [ 807.805524][ T7981] bridge0: port 1(bridge_slave_0) entered disabled state [ 807.835307][ T7981] device bridge_slave_0 entered promiscuous mode [ 807.845436][ T7981] bridge0: port 2(bridge_slave_1) entered blocking state [ 807.852573][ T7981] bridge0: port 2(bridge_slave_1) entered disabled state [ 807.860478][ T7981] device bridge_slave_1 entered promiscuous mode [ 807.876797][ T7981] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 807.886432][ T7981] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 807.903161][ T7981] team0: Port device team_slave_0 added [ 807.909742][ T7981] team0: Port device team_slave_1 added [ 807.964974][ T7981] device hsr_slave_0 entered promiscuous mode [ 808.043301][ T7981] device hsr_slave_1 entered promiscuous mode [ 808.110245][ T7981] bridge0: port 2(bridge_slave_1) entered blocking state [ 808.117450][ T7981] bridge0: port 2(bridge_slave_1) entered forwarding state [ 808.125208][ T7981] bridge0: port 1(bridge_slave_0) entered blocking state [ 808.132341][ T7981] bridge0: port 1(bridge_slave_0) entered forwarding state [ 808.166217][ T7981] 8021q: adding VLAN 0 to HW filter on device bond0 [ 808.177798][ T7984] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 808.188195][ T7984] bridge0: port 1(bridge_slave_0) entered disabled state [ 808.197502][ T7984] bridge0: port 2(bridge_slave_1) entered disabled state [ 808.205559][ T7984] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 808.218386][ T7981] 8021q: adding VLAN 0 to HW filter on device team0 [ 808.228276][ T2873] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 808.237202][ T2873] bridge0: port 1(bridge_slave_0) entered blocking state [ 808.244305][ T2873] bridge0: port 1(bridge_slave_0) entered forwarding state [ 808.265054][ T7984] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 808.273611][ T7984] bridge0: port 2(bridge_slave_1) entered blocking state [ 808.280753][ T7984] bridge0: port 2(bridge_slave_1) entered forwarding state [ 808.288811][ T7984] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 808.297409][ T7984] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 808.305749][ T7984] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 808.314440][ T7984] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 808.324278][ T7983] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 808.335388][ T7981] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 808.352232][ T7981] 8021q: adding VLAN 0 to HW filter on device batadv0 2019/04/25 06:21:39 executed programs: 48 2019/04/25 06:21:44 executed programs: 103 2019/04/25 06:21:49 executed programs: 164 2019/04/25 06:21:54 executed programs: 229 2019/04/25 06:21:59 executed programs: 282 2019/04/25 06:22:04 executed programs: 337 2019/04/25 06:22:09 executed programs: 400 2019/04/25 06:22:14 executed programs: 456 2019/04/25 06:22:19 executed programs: 516 2019/04/25 06:22:25 executed programs: 574 2019/04/25 06:22:30 executed programs: 627 2019/04/25 06:22:35 executed programs: 676 2019/04/25 06:22:40 executed programs: 726 2019/04/25 06:22:45 executed programs: 780 2019/04/25 06:22:50 executed programs: 834 2019/04/25 06:22:55 executed programs: 900 2019/04/25 06:23:00 executed programs: 963 2019/04/25 06:23:05 executed programs: 1031 2019/04/25 06:23:10 executed programs: 1095 2019/04/25 06:23:15 executed programs: 1149 2019/04/25 06:23:20 executed programs: 1206 2019/04/25 06:23:25 executed programs: 1263 2019/04/25 06:23:30 executed programs: 1323 2019/04/25 06:23:35 executed programs: 1385 2019/04/25 06:23:40 executed programs: 1442 2019/04/25 06:23:45 executed programs: 1497 2019/04/25 06:23:50 executed programs: 1554 2019/04/25 06:23:55 executed programs: 1608 2019/04/25 06:24:00 executed programs: 1668 2019/04/25 06:24:05 executed programs: 1726 2019/04/25 06:24:11 executed programs: 1788 2019/04/25 06:24:16 executed programs: 1847 2019/04/25 06:24:21 executed programs: 1906 [ 1123.113153][ T1041] INFO: task syz-executor.0:15966 blocked for more than 143 seconds. [ 1123.121410][ T1041] Not tainted 5.1.0-rc6+ #84 [ 1123.128054][ T1041] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1123.137242][ T1041] syz-executor.0 D28384 15966 7981 0x80000000 [ 1123.149212][ T1041] Call Trace: [ 1123.152626][ T1041] __schedule+0x813/0x1cc0 [ 1123.157398][ T1041] ? __sched_text_start+0x8/0x8 [ 1123.162255][ T1041] ? rwsem_down_read_failed+0x1db/0x420 [ 1123.169152][ T1041] ? _raw_spin_unlock_irq+0x28/0x90 [ 1123.174739][ T1041] ? lockdep_hardirqs_on+0x418/0x5d0 [ 1123.180041][ T1041] schedule+0x92/0x180 [ 1123.185553][ T1041] rwsem_down_read_failed+0x213/0x420 [ 1123.190940][ T1041] ? __rwsem_down_read_failed_common.part.0+0x80/0x80 [ 1123.198120][ T1041] ? mark_held_locks+0xf0/0xf0 [ 1123.202917][ T1041] call_rwsem_down_read_failed+0x18/0x30 [ 1123.209912][ T1041] down_read+0x49/0x90 [ 1123.214599][ T1041] ? do_exit+0x443/0x2fa0 [ 1123.218939][ T1041] do_exit+0x443/0x2fa0 [ 1123.225300][ T1041] ? find_held_lock+0x35/0x130 [ 1123.230082][ T1041] ? do_group_exit+0x2e9/0x370 [ 1123.235212][ T1041] ? mm_update_next_owner+0x640/0x640 [ 1123.240598][ T1041] ? _raw_spin_unlock_irq+0x28/0x90 [ 1123.247240][ T1041] ? do_group_exit+0x2e9/0x370 [ 1123.252014][ T1041] ? _raw_spin_unlock_irq+0x28/0x90 [ 1123.257564][ T1041] ? lockdep_hardirqs_on+0x418/0x5d0 [ 1123.262957][ T1041] ? trace_hardirqs_on+0x67/0x230 [ 1123.269735][ T1041] ? kasan_check_read+0x11/0x20 [ 1123.274917][ T1041] do_group_exit+0x135/0x370 [ 1123.279528][ T1041] __x64_sys_exit_group+0x44/0x50 [ 1123.285889][ T1041] do_syscall_64+0x103/0x610 [ 1123.290492][ T1041] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1123.296720][ T1041] RIP: 0033:0x458d99 [ 1123.300811][ T1041] Code: Bad RIP value. [ 1123.306207][ T1041] RSP: 002b:00007fff1c6cc528 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 1123.314921][ T1041] RAX: ffffffffffffffda RBX: 000000000000001e RCX: 0000000000458d99 [ 1123.322903][ T1041] RDX: 0000000000412b51 RSI: fffffffffffffff7 RDI: 0000000000000000 [ 1123.332287][ T1041] RBP: 0000000000000000 R08: ffffffffffffffff R09: 00007fff1c6cc580 [ 1123.340570][ T1041] R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000001 [ 1123.349823][ T1041] R13: 00007fff1c6cc580 R14: 0000000000000000 R15: 00007fff1c6cc590 [ 1123.358998][ T1041] INFO: task syz-executor.0:15967 blocked for more than 143 seconds. [ 1123.368376][ T1041] Not tainted 5.1.0-rc6+ #84 [ 1123.373758][ T1041] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1123.382433][ T1041] syz-executor.0 D27416 15967 7981 0x80000000 [ 1123.390154][ T1041] Call Trace: [ 1123.393761][ T1041] __schedule+0x813/0x1cc0 [ 1123.398194][ T1041] ? __sched_text_start+0x8/0x8 [ 1123.404337][ T1041] ? rwsem_down_read_failed+0x1db/0x420 [ 1123.409891][ T1041] ? _raw_spin_unlock_irq+0x28/0x90 [ 1123.415496][ T1041] ? lockdep_hardirqs_on+0x418/0x5d0 [ 1123.420823][ T1041] schedule+0x92/0x180 [ 1123.426279][ T1041] rwsem_down_read_failed+0x213/0x420 [ 1123.431669][ T1041] ? __rwsem_down_read_failed_common.part.0+0x80/0x80 [ 1123.439085][ T1041] ? mark_held_locks+0xf0/0xf0 [ 1123.445270][ T1041] call_rwsem_down_read_failed+0x18/0x30 [ 1123.450927][ T1041] down_read+0x49/0x90 [ 1123.455424][ T1041] ? do_exit+0x443/0x2fa0 [ 1123.459764][ T1041] do_exit+0x443/0x2fa0 [ 1123.465339][ T1041] ? get_signal+0x331/0x1d50 [ 1123.469944][ T1041] ? find_held_lock+0x35/0x130 [ 1123.475052][ T1041] ? mm_update_next_owner+0x640/0x640 [ 1123.480441][ T1041] ? kasan_check_write+0x14/0x20 [ 1123.487556][ T1041] ? _raw_spin_unlock_irq+0x28/0x90 [ 1123.492767][ T1041] ? get_signal+0x331/0x1d50 [ 1123.497688][ T1041] ? _raw_spin_unlock_irq+0x28/0x90 [ 1123.502902][ T1041] do_group_exit+0x135/0x370 [ 1123.508814][ T1041] get_signal+0x399/0x1d50 [ 1123.513655][ T1041] do_signal+0x87/0x1940 [ 1123.517913][ T1041] ? kasan_check_read+0x11/0x20 [ 1123.522800][ T1041] ? _copy_to_user+0xc9/0x120 [ 1123.528968][ T1041] ? setup_sigcontext+0x7d0/0x7d0 [ 1123.534335][ T1041] ? exit_to_usermode_loop+0x43/0x2c0 [ 1123.539717][ T1041] ? do_syscall_64+0x52d/0x610 [ 1123.545915][ T1041] ? exit_to_usermode_loop+0x43/0x2c0 [ 1123.551302][ T1041] ? lockdep_hardirqs_on+0x418/0x5d0 [ 1123.556907][ T1041] ? trace_hardirqs_on+0x67/0x230 [ 1123.561946][ T1041] exit_to_usermode_loop+0x244/0x2c0 [ 1123.568546][ T1041] do_syscall_64+0x52d/0x610 [ 1123.573455][ T1041] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1123.579353][ T1041] RIP: 0033:0x458d99 [ 1123.584559][ T1041] Code: Bad RIP value. [ 1123.588627][ T1041] RSP: 002b:00007feeb4071cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 1123.597359][ T1041] RAX: fffffffffffffe00 RBX: 000000000073bf08 RCX: 0000000000458d99 [ 1123.606631][ T1041] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000073bf08 [ 1123.615759][ T1041] RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 [ 1123.625049][ T1041] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000073bf0c [ 1123.633327][ T1041] R13: 00007fff1c6cc31f R14: 00007feeb40729c0 R15: 000000000073bf0c [ 1123.641328][ T1041] [ 1123.641328][ T1041] Showing all locks held in the system: [ 1123.650420][ T1041] 1 lock held by khungtaskd/1041: [ 1123.655749][ T1041] #0: 00000000ff09c878 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e [ 1123.666391][ T1041] 1 lock held by rsyslogd/7849: [ 1123.671239][ T1041] #0: 00000000cbe8c3ae (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 [ 1123.680372][ T1041] 2 locks held by getty/7940: [ 1123.686527][ T1041] #0: 000000001aa03bba (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 1123.695797][ T1041] #1: 0000000042a1c4a8 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 1123.706789][ T1041] 2 locks held by getty/7941: [ 1123.711471][ T1041] #0: 0000000018aafebe (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 1123.720887][ T1041] #1: 0000000067d0e26f (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 1123.731766][ T1041] 2 locks held by getty/7942: [ 1123.736738][ T1041] #0: 000000009d67807a (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 1123.747823][ T1041] #1: 000000003f619002 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 1123.757750][ T1041] 2 locks held by getty/7943: [ 1123.762429][ T1041] #0: 00000000b89ab3b8 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 1123.772787][ T1041] #1: 000000008d4e26bb (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 1123.782697][ T1041] 2 locks held by getty/7944: [ 1123.788655][ T1041] #0: 00000000ee096066 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 1123.797905][ T1041] #1: 0000000009f80a2c (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 1123.808953][ T1041] 2 locks held by getty/7945: [ 1123.813942][ T1041] #0: 0000000042ba15d0 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 1123.827092][ T1041] #1: 000000007690da26 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 1123.837047][ T1041] 2 locks held by getty/7946: [ 1123.841722][ T1041] #0: 000000003a020ead (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 1123.851984][ T1041] #1: 00000000e087eacd (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 1123.861859][ T1041] 1 lock held by syz-executor.0/15966: [ 1123.868612][ T1041] #0: 000000000103e41e (&mm->mmap_sem){++++}, at: do_exit+0x443/0x2fa0 [ 1123.878161][ T1041] 1 lock held by syz-executor.0/15967: [ 1123.884915][ T1041] #0: 000000000103e41e (&mm->mmap_sem){++++}, at: do_exit+0x443/0x2fa0 [ 1123.893597][ T1041] 1 lock held by syz-executor.0/15968: [ 1123.899058][ T1041] [ 1123.901383][ T1041] ============================================= [ 1123.901383][ T1041] [ 1123.911237][ T1041] NMI backtrace for cpu 1 [ 1123.915661][ T1041] CPU: 1 PID: 1041 Comm: khungtaskd Not tainted 5.1.0-rc6+ #84 [ 1123.924687][ T1041] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1123.934737][ T1041] Call Trace: [ 1123.938113][ T1041] dump_stack+0x172/0x1f0 [ 1123.942454][ T1041] nmi_cpu_backtrace.cold+0x63/0xa4 [ 1123.947741][ T1041] ? lapic_can_unplug_cpu.cold+0x38/0x38 [ 1123.953376][ T1041] nmi_trigger_cpumask_backtrace+0x1be/0x236 [ 1123.959359][ T1041] arch_trigger_cpumask_backtrace+0x14/0x20 [ 1123.965336][ T1041] watchdog+0x9b7/0xec0 [ 1123.969548][ T1041] kthread+0x357/0x430 [ 1123.973623][ T1041] ? reset_hung_task_detector+0x30/0x30 [ 1123.979164][ T1041] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 1123.985408][ T1041] ret_from_fork+0x3a/0x50 [ 1123.989911][ T1041] Sending NMI from CPU 1 to CPUs 0: [ 1123.995902][ C0] NMI backtrace for cpu 0 [ 1123.995909][ C0] CPU: 0 PID: 15968 Comm: syz-executor.0 Not tainted 5.1.0-rc6+ #84 [ 1123.995915][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1123.995919][ C0] RIP: 0010:__lock_acquire+0x712/0x3fb0 [ 1123.995931][ C0] Code: e8 45 29 e8 45 01 e5 c1 c0 10 44 89 ea 41 31 c0 44 89 c0 45 29 c4 45 01 e8 c1 c8 0d 41 31 c4 44 89 e0 44 29 e2 c1 c0 04 31 d0 <43> 8d 14 20 48 c1 e0 20 48 09 d0 48 85 db 48 89 85 28 ff ff ff 0f [ 1123.995935][ C0] RSP: 0018:ffff8880830b7748 EFLAGS: 00000086 [ 1123.995943][ C0] RAX: 00000000f2935765 RBX: 0000000000000000 RCX: ffff888081c18bc0 [ 1123.995949][ C0] RDX: 00000000dab1f47f RSI: ffff888081c18be8 RDI: ffff888081c18c09 [ 1123.995954][ C0] RBP: ffff8880830b7880 R08: 000000008584b890 R09: ffff888081c18c08 [ 1123.995959][ C0] R10: ffff888081c18be8 R11: ffff888081c18340 R12: 00000000a2822a31 [ 1123.995964][ C0] R13: 000000007d341eb0 R14: 0000000000000000 R15: 0000000000000000 [ 1123.995981][ C0] FS: 00007feeb4051700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 1123.995986][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1123.995991][ C0] CR2: ffffffffff600400 CR3: 000000009392b000 CR4: 00000000001406f0 [ 1123.995994][ C0] Call Trace: [ 1123.995998][ C0] ? mark_held_locks+0xf0/0xf0 [ 1123.996001][ C0] lock_acquire+0x16f/0x3f0 [ 1123.996005][ C0] ? perf_mmap+0x749/0x17f0 [ 1123.996008][ C0] ? perf_mmap+0x749/0x17f0 [ 1123.996018][ C0] __mutex_lock+0xf7/0x1310 [ 1123.996021][ C0] ? perf_mmap+0x749/0x17f0 [ 1123.996025][ C0] ? retint_kernel+0x2d/0x2d [ 1123.996028][ C0] ? perf_mmap+0x749/0x17f0 [ 1123.996032][ C0] ? lock_downgrade+0x880/0x880 [ 1123.996036][ C0] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 1123.996040][ C0] ? mutex_trylock+0x1e0/0x1e0 [ 1123.996043][ C0] ? kasan_check_write+0x14/0x20 [ 1123.996048][ C0] ? __mutex_unlock_slowpath+0xf8/0x6b0 [ 1123.996051][ C0] ? wait_for_completion+0x440/0x440 [ 1123.996055][ C0] mutex_lock_nested+0x16/0x20 [ 1123.996059][ C0] ? mutex_lock_nested+0x16/0x20 [ 1123.996062][ C0] perf_mmap+0x749/0x17f0 [ 1123.996066][ C0] ? perf_release+0x50/0x50 [ 1123.996069][ C0] ? memset+0x32/0x40 [ 1123.996073][ C0] mmap_region+0xc3a/0x1770 [ 1123.996076][ C0] ? __x64_sys_brk+0x760/0x760 [ 1123.996081][ C0] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1123.996085][ C0] ? get_unmapped_area+0x295/0x3b0 [ 1123.996088][ C0] do_mmap+0x8e2/0x1080 [ 1123.996091][ C0] vm_mmap_pgoff+0x1c5/0x230 [ 1123.996095][ C0] ? vma_is_stack_for_current+0xd0/0xd0 [ 1123.996099][ C0] ? ksys_dup3+0x3e0/0x3e0 [ 1123.996103][ C0] ? _copy_to_user+0xc9/0x120 [ 1123.996106][ C0] ksys_mmap_pgoff+0x4aa/0x630 [ 1123.996110][ C0] ? find_mergeable_anon_vma+0x2e0/0x2e0 [ 1123.996114][ C0] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 1123.996118][ C0] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 1123.996122][ C0] ? do_syscall_64+0x26/0x610 [ 1123.996126][ C0] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1123.996130][ C0] __x64_sys_mmap+0xe9/0x1b0 [ 1123.996133][ C0] do_syscall_64+0x103/0x610 [ 1123.996137][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1123.996141][ C0] RIP: 0033:0x458d99 [ 1123.996152][ C0] Code: ad b8 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 b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 1123.996156][ C0] RSP: 002b:00007feeb4050c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 [ 1123.996165][ C0] RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000000458d99 [ 1123.996171][ C0] RDX: 0000000000000000 RSI: 0000000000001000 RDI: 0000000020fff000 [ 1123.996176][ C0] RBP: 000000000073bfa0 R08: 0000000000000003 R09: 0000000000000000 [ 1123.996181][ C0] R10: 0000000000001011 R11: 0000000000000246 R12: 00007feeb40516d4 [ 1123.996187][ C0] R13: 00000000004c4d23 R14: 00000000004d8958 R15: 00000000ffffffff [ 1124.000645][ T1041] Kernel panic - not syncing: hung_task: blocked tasks [ 1124.377309][ T1041] CPU: 1 PID: 1041 Comm: khungtaskd Not tainted 5.1.0-rc6+ #84 [ 1124.384842][ T1041] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1124.394892][ T1041] Call Trace: [ 1124.398191][ T1041] dump_stack+0x172/0x1f0 [ 1124.402614][ T1041] panic+0x2cb/0x65c [ 1124.406523][ T1041] ? __warn_printk+0xf3/0xf3 [ 1124.411113][ T1041] ? lapic_can_unplug_cpu.cold+0x38/0x38 [ 1124.416765][ T1041] ? ___preempt_schedule+0x16/0x18 [ 1124.421893][ T1041] ? nmi_trigger_cpumask_backtrace+0x19e/0x236 [ 1124.428046][ T1041] ? nmi_trigger_cpumask_backtrace+0x1fa/0x236 [ 1124.434198][ T1041] ? nmi_trigger_cpumask_backtrace+0x204/0x236 [ 1124.440350][ T1041] ? nmi_trigger_cpumask_backtrace+0x19e/0x236 [ 1124.446510][ T1041] watchdog+0x9c8/0xec0 [ 1124.450684][ T1041] kthread+0x357/0x430 [ 1124.454759][ T1041] ? reset_hung_task_detector+0x30/0x30 [ 1124.460309][ T1041] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 1124.466557][ T1041] ret_from_fork+0x3a/0x50 [ 1124.472047][ T1041] Kernel Offset: disabled [ 1124.476371][ T1041] Rebooting in 86400 seconds..