[ 41.773834] audit: type=1800 audit(1559979380.617:31): pid=7652 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2469 res=0 Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 46.611930] kauditd_printk_skb: 3 callbacks suppressed [ 46.611945] audit: type=1400 audit(1559979385.527:35): avc: denied { map } for pid=7827 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.232' (ECDSA) to the list of known hosts. [ 367.921769] audit: type=1400 audit(1559979706.837:36): avc: denied { map } for pid=7839 comm="syz-executor093" path="/root/syz-executor093565324" dev="sda1" ino=1426 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 367.951964] IPVS: ftp: loaded support on port[0] = 21 [ 368.019069] chnl_net:caif_netlink_parms(): no params data found [ 368.052454] bridge0: port 1(bridge_slave_0) entered blocking state [ 368.060080] bridge0: port 1(bridge_slave_0) entered disabled state [ 368.067427] device bridge_slave_0 entered promiscuous mode [ 368.074800] bridge0: port 2(bridge_slave_1) entered blocking state [ 368.081914] bridge0: port 2(bridge_slave_1) entered disabled state [ 368.089009] device bridge_slave_1 entered promiscuous mode [ 368.105424] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 368.114771] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 368.131385] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 368.139366] team0: Port device team_slave_0 added [ 368.145030] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 368.152528] team0: Port device team_slave_1 added [ 368.158047] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 368.165567] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 368.217994] device hsr_slave_0 entered promiscuous mode [ 368.255617] device hsr_slave_1 entered promiscuous mode [ 368.296143] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 368.303476] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 368.318138] bridge0: port 2(bridge_slave_1) entered blocking state [ 368.324730] bridge0: port 2(bridge_slave_1) entered forwarding state [ 368.331758] bridge0: port 1(bridge_slave_0) entered blocking state [ 368.338218] bridge0: port 1(bridge_slave_0) entered forwarding state [ 368.369804] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 368.376476] 8021q: adding VLAN 0 to HW filter on device bond0 [ 368.384725] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 368.394058] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 368.413396] bridge0: port 1(bridge_slave_0) entered disabled state [ 368.420869] bridge0: port 2(bridge_slave_1) entered disabled state [ 368.428664] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 368.439729] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 368.446094] 8021q: adding VLAN 0 to HW filter on device team0 [ 368.454967] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 368.462863] bridge0: port 1(bridge_slave_0) entered blocking state [ 368.469399] bridge0: port 1(bridge_slave_0) entered forwarding state [ 368.479617] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 368.488067] bridge0: port 2(bridge_slave_1) entered blocking state [ 368.494530] bridge0: port 2(bridge_slave_1) entered forwarding state [ 368.510621] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 368.518912] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 368.529478] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 368.543848] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 368.554091] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 368.565066] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready executing program [ 368.571730] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 368.579555] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 368.587608] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 368.601892] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 368.612542] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 529.875476] INFO: task syz-executor093:7840 blocked for more than 140 seconds. [ 529.883119] Not tainted 4.19.48 #20 [ 529.888634] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 529.896889] syz-executor093 D23552 7840 7839 0x80000000 [ 529.902633] Call Trace: [ 529.905394] __schedule+0x80d/0x1c70 [ 529.910398] ? pci_mmcfg_check_reserved+0x170/0x170 [ 529.916456] ? rwsem_down_read_failed+0x1e3/0x3c0 [ 529.921321] ? _raw_spin_unlock_irq+0x28/0x90 [ 529.927212] ? lockdep_hardirqs_on+0x415/0x5d0 [ 529.931832] schedule+0x92/0x1c0 [ 529.935214] rwsem_down_read_failed+0x21b/0x3c0 [ 529.940166] ? __rwsem_down_read_failed_common.part.0+0x80/0x80 [ 529.947521] ? __might_fault+0x12b/0x1e0 [ 529.951634] call_rwsem_down_read_failed+0x18/0x30 [ 529.956926] down_read+0x49/0xb0 [ 529.960399] ? do_exit+0x45b/0x2fa0 [ 529.964038] do_exit+0x45b/0x2fa0 [ 529.968734] ? pci_mmcfg_check_reserved+0x170/0x170 [ 529.974879] ? do_group_exit+0x2e9/0x370 [ 529.979175] ? mm_update_next_owner+0x660/0x660 [ 529.983869] ? preempt_schedule_common+0x4f/0xe0 [ 529.989898] ? preempt_schedule+0x4b/0x60 [ 529.994208] ? ___preempt_schedule+0x16/0x18 [ 529.998849] do_group_exit+0x135/0x370 [ 530.002764] __x64_sys_exit_group+0x44/0x50 [ 530.008399] do_syscall_64+0xfd/0x620 [ 530.012337] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 530.017730] RIP: 0033:0x4461a8 [ 530.020943] Code: 20 73 70 61 63 65 20 69 6e 20 46 75 6e 63 44 42 20 66 6f 72 20 6d 75 74 65 78 20 69 6e 66 6f 20 28 6d 61 78 20 25 64 20 65 6e <74> 72 69 65 73 29 20 2d 20 69 67 6e 6f 72 69 6e 67 0a 00 00 00 00 [ 530.041215] RSP: 002b:00007ffef6927668 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 530.050082] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00000000004461a8 [ 530.058715] RDX: 0000000000000001 RSI: 000000000000003c RDI: 0000000000000001 [ 530.066202] RBP: 00000000004ce510 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 530.073492] R10: 00007ffef69276d0 R11: 0000000000000246 R12: 0000000000000001 [ 530.082157] R13: 00000000006e27a0 R14: 000000000000002d R15: 0000000000000007 [ 530.089642] INFO: task syz-executor093:7848 blocked for more than 140 seconds. [ 530.098218] Not tainted 4.19.48 #20 [ 530.102380] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 530.110567] syz-executor093 D28800 7848 7839 0x80000000 [ 530.117396] Call Trace: [ 530.120010] __schedule+0x80d/0x1c70 [ 530.123739] ? pci_mmcfg_check_reserved+0x170/0x170 [ 530.128960] ? rwsem_down_read_failed+0x1e3/0x3c0 [ 530.133821] ? _raw_spin_unlock_irq+0x28/0x90 [ 530.139644] ? lockdep_hardirqs_on+0x415/0x5d0 [ 530.144257] schedule+0x92/0x1c0 [ 530.147816] rwsem_down_read_failed+0x21b/0x3c0 [ 530.152514] ? __rwsem_down_read_failed_common.part.0+0x80/0x80 [ 530.159791] ? __might_fault+0x12b/0x1e0 [ 530.163926] call_rwsem_down_read_failed+0x18/0x30 [ 530.169035] down_read+0x49/0xb0 [ 530.172422] ? do_exit+0x45b/0x2fa0 [ 530.178157] do_exit+0x45b/0x2fa0 [ 530.181710] ? get_signal+0x331/0x1d50 [ 530.186164] ? mm_update_next_owner+0x660/0x660 [ 530.191036] ? _raw_spin_unlock_irq+0x28/0x90 [ 530.196747] ? get_signal+0x331/0x1d50 [ 530.200659] ? _raw_spin_unlock_irq+0x28/0x90 [ 530.205165] do_group_exit+0x135/0x370 [ 530.209271] get_signal+0x399/0x1d50 [ 530.213030] ? lock_downgrade+0x810/0x810 [ 530.218452] do_signal+0x95/0x1960 [ 530.222069] ? vm_mmap_pgoff+0x1f1/0x230 [ 530.226388] ? vm_mmap_pgoff+0x107/0x230 [ 530.230474] ? setup_sigcontext+0x7d0/0x7d0 [ 530.234838] ? vma_is_stack_for_current+0xd0/0xd0 [ 530.241017] ? iterate_fd+0x360/0x360 [ 530.244931] ? __x64_sys_futex+0x40d/0x590 [ 530.249491] ? exit_to_usermode_loop+0x43/0x2c0 [ 530.254182] ? do_syscall_64+0x53d/0x620 [ 530.259501] ? exit_to_usermode_loop+0x43/0x2c0 [ 530.264202] ? lockdep_hardirqs_on+0x415/0x5d0 [ 530.269028] ? trace_hardirqs_on+0x67/0x220 [ 530.273382] exit_to_usermode_loop+0x244/0x2c0 [ 530.280202] do_syscall_64+0x53d/0x620 [ 530.284117] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 530.289497] RIP: 0033:0x447659 [ 530.292710] Code: 64 20 62 79 74 65 73 0a 00 66 69 6c 65 20 25 64 20 45 4f 46 0a 00 00 00 00 73 74 72 65 61 6d 20 77 61 73 20 72 65 71 75 65 73 <74> 65 64 20 77 69 74 68 20 7a 69 70 20 6d 6f 64 65 2c 20 62 75 74 [ 530.313767] RSP: 002b:00007ff8a1127db8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 530.321888] RAX: fffffffffffffe00 RBX: 00000000006ddc58 RCX: 0000000000447659 [ 530.331162] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000006ddc58 [ 530.338665] RBP: 00000000006ddc50 R08: 0000000000000000 R09: 0000000000000000 [ 530.347214] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006ddc5c [ 530.354591] R13: 00007ffef692762f R14: 00007ff8a11289c0 R15: 0000000000000005 [ 530.362188] [ 530.362188] Showing all locks held in the system: [ 530.369721] 1 lock held by khungtaskd/1032: [ 530.374056] #0: 00000000ead221b0 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e [ 530.383140] 3 locks held by rs:main Q:Reg/7688: [ 530.389044] #0: 0000000036f5ae72 (&rq->lock){-.-.}, at: __schedule+0x1f8/0x1c70 [ 530.396852] #1: 00000000ead221b0 (rcu_read_lock){....}, at: vfs_write+0x429/0x560 [ 530.404676] #2: 00000000ead221b0 (rcu_read_lock){....}, at: dput+0x38/0x690 [ 530.413180] 1 lock held by rsyslogd/7690: [ 530.417485] #0: 00000000c94eb15a (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 [ 530.426784] 2 locks held by getty/7812: [ 530.430770] #0: 00000000beae4f46 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 530.440108] #1: 000000005d3353ea (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 [ 530.450390] 2 locks held by getty/7813: [ 530.454382] #0: 0000000074914d06 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 530.462893] #1: 00000000a1012dad (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 [ 530.473050] 2 locks held by getty/7814: [ 530.477375] #0: 00000000cf9545b9 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 530.486918] #1: 000000007cac3042 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 [ 530.496027] 2 locks held by getty/7815: [ 530.500013] #0: 000000001c53d4a6 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 530.509568] #1: 0000000054c12f8d (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 [ 530.520425] 2 locks held by getty/7816: [ 530.524414] #0: 00000000fb716cc5 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 530.534033] #1: 0000000021227abc (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 [ 530.543179] 2 locks held by getty/7817: [ 530.548333] #0: 00000000149bdeec (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 530.556809] #1: 00000000a43ee8a4 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 [ 530.567872] 2 locks held by getty/7818: [ 530.571883] #0: 00000000a1747150 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 530.580356] #1: 00000000a6160e7b (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 [ 530.590458] 1 lock held by syz-executor093/7840: [ 530.595228] #0: 000000006b4cf8e6 (&mm->mmap_sem){++++}, at: do_exit+0x45b/0x2fa0 [ 530.603100] 2 locks held by syz-executor093/7847: [ 530.609258] 1 lock held by syz-executor093/7848: [ 530.614053] #0: 000000006b4cf8e6 (&mm->mmap_sem){++++}, at: do_exit+0x45b/0x2fa0 [ 530.621949] [ 530.623593] ============================================= [ 530.623593] [ 530.631803] NMI backtrace for cpu 0 [ 530.635503] CPU: 0 PID: 1032 Comm: khungtaskd Not tainted 4.19.48 #20 [ 530.642090] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 530.651452] Call Trace: [ 530.654139] dump_stack+0x172/0x1f0 [ 530.657789] nmi_cpu_backtrace.cold+0x63/0xa4 [ 530.662364] ? lapic_can_unplug_cpu.cold+0x38/0x38 [ 530.667401] nmi_trigger_cpumask_backtrace+0x1b0/0x1f8 [ 530.672709] arch_trigger_cpumask_backtrace+0x14/0x20 [ 530.677983] watchdog+0x9df/0xee0 [ 530.681482] kthread+0x354/0x420 [ 530.684857] ? reset_hung_task_detector+0x30/0x30 [ 530.689709] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 530.695277] ret_from_fork+0x24/0x30 [ 530.699245] Sending NMI from CPU 0 to CPUs 1: [ 530.704592] NMI backtrace for cpu 1 [ 530.704599] CPU: 1 PID: 7847 Comm: syz-executor093 Not tainted 4.19.48 #20 [ 530.704606] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 530.704610] RIP: 0010:check_memory_region+0x3a/0x190 [ 530.704623] Code: 7f ff ff 55 0f b6 d2 48 39 c7 48 89 e5 41 55 41 54 53 0f 86 f6 00 00 00 4c 8d 5c 37 ff 49 89 f8 48 b8 00 00 00 00 00 fc ff df <4d> 89 da 49 c1 e8 03 4d 8d 24 00 49 c1 ea 03 49 01 c2 4c 89 e0 49 [ 530.704628] RSP: 0018:ffff88807dbf7678 EFLAGS: 00000016 [ 530.704637] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff8151ff0b [ 530.704643] RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff89ef11a8 [ 530.704648] RBP: ffff88807dbf7690 R08: ffffffff89ef11a8 R09: 0000000000000000 [ 530.704654] R10: 0000000000000001 R11: ffffffff89ef11ab R12: 0000000000000000 [ 530.704660] R13: 0000000000000000 R14: ffff88808f582580 R15: ffff88808f00b9d0 [ 530.704666] FS: 00007ff8a1149700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 530.704671] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 530.704677] CR2: 00007ff8a1127e78 CR3: 00000000885ae000 CR4: 00000000001406e0 [ 530.704680] Call Trace: [ 530.704684] kasan_check_write+0x14/0x20 [ 530.704688] __lock_acquire+0x23b/0x48f0 [ 530.704692] ? mark_held_locks+0xb1/0x100 [ 530.704696] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 530.704701] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 530.704705] ? mark_held_locks+0x100/0x100 [ 530.704709] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 530.704713] ? retint_kernel+0x2d/0x2d [ 530.704717] ? perf_mmap+0x735/0x1730 [ 530.704721] ? __lock_is_held+0xb6/0x140 [ 530.704725] ? perf_mmap+0x735/0x1730 [ 530.704729] lock_acquire+0x16f/0x3f0 [ 530.704732] ? perf_mmap+0x735/0x1730 [ 530.704736] ? perf_mmap+0x735/0x1730 [ 530.704740] __mutex_lock+0xf7/0x1300 [ 530.704744] ? perf_mmap+0x735/0x1730 [ 530.704748] ? lockdep_hardirqs_on+0x415/0x5d0 [ 530.704752] ? perf_mmap+0x735/0x1730 [ 530.704756] ? lock_downgrade+0x810/0x810 [ 530.704760] ? mutex_trylock+0x1e0/0x1e0 [ 530.704764] ? kasan_check_write+0x14/0x20 [ 530.704768] ? __mutex_unlock_slowpath+0xf8/0x6b0 [ 530.704772] ? wait_for_completion+0x440/0x440 [ 530.704776] mutex_lock_nested+0x16/0x20 [ 530.704780] ? mutex_lock_nested+0x16/0x20 [ 530.704784] perf_mmap+0x735/0x1730 [ 530.704796] ? perf_release+0x50/0x50 [ 530.704800] ? do_munmap+0x893/0xed0 [ 530.704804] ? memset+0x32/0x40 [ 530.704807] mmap_region+0xc2f/0x1760 [ 530.704811] ? __x64_sys_brk+0x6c0/0x6c0 [ 530.704816] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 530.704820] ? get_unmapped_area+0x293/0x3b0 [ 530.704824] do_mmap+0x8e2/0x1080 [ 530.704828] vm_mmap_pgoff+0x1c5/0x230 [ 530.704832] ? vma_is_stack_for_current+0xd0/0xd0 [ 530.704836] ? iterate_fd+0x360/0x360 [ 530.704840] ksys_mmap_pgoff+0x4aa/0x630 [ 530.704844] ? find_mergeable_anon_vma+0x2e0/0x2e0 [ 530.704848] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 530.704853] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 530.704856] ? do_syscall_64+0x26/0x620 [ 530.704861] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 530.704865] __x64_sys_mmap+0xe9/0x1b0 [ 530.704869] do_syscall_64+0xfd/0x620 [ 530.704873] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 530.704877] RIP: 0033:0x447659 [ 530.704888] Code: e8 5c 14 03 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 db 0c fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 530.704892] RSP: 002b:00007ff8a1148da8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 [ 530.704902] RAX: ffffffffffffffda RBX: 00000000006ddc48 RCX: 0000000000447659 [ 530.704908] RDX: 0000000000000000 RSI: 0000000000001000 RDI: 0000000020fff000 [ 530.704913] RBP: 00000000006ddc40 R08: 0000000000000003 R09: 0000000000000000 [ 530.704919] R10: 0002000000001011 R11: 0000000000000246 R12: 00000000006ddc4c [ 530.704924] R13: 00007ffef692762f R14: 00007ff8a11499c0 R15: 0000000000000000 [ 530.707712] Kernel panic - not syncing: hung_task: blocked tasks [ 531.080278] CPU: 0 PID: 1032 Comm: khungtaskd Not tainted 4.19.48 #20 [ 531.086870] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 531.096231] Call Trace: [ 531.098838] dump_stack+0x172/0x1f0 [ 531.102538] panic+0x263/0x507 [ 531.105752] ? __warn_printk+0xf3/0xf3 [ 531.109648] ? lapic_can_unplug_cpu.cold+0x38/0x38 [ 531.114592] ? ___preempt_schedule+0x16/0x18 [ 531.119017] ? nmi_trigger_cpumask_backtrace+0x165/0x1f8 [ 531.124519] ? nmi_trigger_cpumask_backtrace+0x1c1/0x1f8 [ 531.129980] ? nmi_trigger_cpumask_backtrace+0x1cb/0x1f8 [ 531.135440] ? nmi_trigger_cpumask_backtrace+0x165/0x1f8 [ 531.141001] watchdog+0x9f0/0xee0 [ 531.144473] kthread+0x354/0x420 [ 531.147851] ? reset_hung_task_detector+0x30/0x30 [ 531.152704] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 531.158253] ret_from_fork+0x24/0x30 [ 531.163268] Kernel Offset: disabled [ 531.166951] Rebooting in 86400 seconds..