syzkaller login: [ 17.383661] cfg80211: Calling CRDA to update world regulatory domain [ 20.543467] cfg80211: Calling CRDA to update world regulatory domain [ 23.703445] cfg80211: Calling CRDA to update world regulatory domain [ 26.863462] cfg80211: Calling CRDA to update world regulatory domain [ 30.033487] cfg80211: Calling CRDA to update world regulatory domain [ 33.193464] cfg80211: Calling CRDA to update world regulatory domain [ 36.363402] cfg80211: Calling CRDA to update world regulatory domain [ 39.523447] cfg80211: Exceeded CRDA call max attempts. Not calling CRDA [ 44.327705] IPVS: Creating netns size=2688 id=1 [ 44.332412] IPVS: ftp: loaded support on port[0] = 21 Warning: Permanently added '10.128.1.10' (ECDSA) to the list of known hosts. 2019/06/27 16:24:19 parsed 1 programs 2019/06/27 16:24:19 executed programs: 0 [ 51.968228] IPv6: ADDRCONF(NETDEV_CHANGE): nr1: link becomes ready [ 51.976776] IPv6: ADDRCONF(NETDEV_CHANGE): nr0: link becomes ready [ 51.983690] IPv6: ADDRCONF(NETDEV_CHANGE): nr2: link becomes ready [ 51.990223] IPv6: ADDRCONF(NETDEV_CHANGE): nr5: link becomes ready [ 51.991109] IPVS: Creating netns size=2688 id=2 [ 51.991117] IPVS: ftp: loaded support on port[0] = 21 [ 52.006965] IPv6: ADDRCONF(NETDEV_CHANGE): nr3: link becomes ready [ 52.015652] IPv6: ADDRCONF(NETDEV_CHANGE): nr4: link becomes ready [ 52.022886] IPVS: Creating netns size=2688 id=3 [ 52.028146] IPVS: ftp: loaded support on port[0] = 21 [ 52.034272] chnl_net:caif_netlink_parms(): no params data found [ 52.044877] IPVS: Creating netns size=2688 id=4 [ 52.048047] device bridge_slave_0 entered promiscuous mode [ 52.048225] device bridge_slave_1 entered promiscuous mode [ 52.049723] IPv6: ADDRCONF(NETDEV_UP): bond_slave_0: link is not ready [ 52.049820] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 52.075299] IPVS: ftp: loaded support on port[0] = 21 [ 52.075412] IPv6: ADDRCONF(NETDEV_UP): bond_slave_1: link is not ready [ 52.075509] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 52.083695] chnl_net:caif_netlink_parms(): no params data found [ 52.091764] device bridge_slave_0 entered promiscuous mode [ 52.091954] device bridge_slave_1 entered promiscuous mode [ 52.093591] IPv6: ADDRCONF(NETDEV_UP): bond_slave_0: link is not ready [ 52.093668] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 52.093756] IPv6: ADDRCONF(NETDEV_UP): bond_slave_1: link is not ready [ 52.093817] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 52.100359] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 52.100413] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 52.103208] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 52.103233] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 52.103924] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.103933] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.103941] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.103945] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.194018] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.200513] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.211362] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 52.218327] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 52.218773] IPVS: Creating netns size=2688 id=5 [ 52.218783] IPVS: ftp: loaded support on port[0] = 21 [ 52.238937] IPVS: Creating netns size=2688 id=6 [ 52.244973] IPVS: ftp: loaded support on port[0] = 21 [ 52.250804] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 52.257622] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 52.268426] IPVS: Creating netns size=2688 id=7 [ 52.273209] IPVS: ftp: loaded support on port[0] = 21 [ 52.273686] chnl_net:caif_netlink_parms(): no params data found [ 52.279896] device bridge_slave_0 entered promiscuous mode [ 52.280085] device bridge_slave_1 entered promiscuous mode [ 52.281517] IPv6: ADDRCONF(NETDEV_UP): bond_slave_0: link is not ready [ 52.281590] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 52.281672] IPv6: ADDRCONF(NETDEV_UP): bond_slave_1: link is not ready [ 52.281732] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 52.288272] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 52.288335] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 52.291015] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 52.291037] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 52.291644] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.291653] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.291660] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.291664] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.380235] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.387113] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.398203] chnl_net:caif_netlink_parms(): no params data found [ 52.408582] 8021q: adding VLAN 0 to HW filter on device bond0 [ 52.415089] chnl_net:caif_netlink_parms(): no params data found [ 52.423001] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 52.430428] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 52.440994] device bridge_slave_0 entered promiscuous mode [ 52.447654] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 52.454892] device bridge_slave_1 entered promiscuous mode [ 52.462509] chnl_net:caif_netlink_parms(): no params data found [ 52.470561] 8021q: adding VLAN 0 to HW filter on device bond0 [ 52.478938] device bridge_slave_0 entered promiscuous mode [ 52.485022] device bridge_slave_1 entered promiscuous mode [ 52.490929] IPv6: ADDRCONF(NETDEV_UP): bond_slave_0: link is not ready [ 52.497735] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 52.505801] 8021q: adding VLAN 0 to HW filter on device bond0 [ 52.511876] IPv6: ADDRCONF(NETDEV_UP): bond_slave_1: link is not ready [ 52.518654] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 52.527657] IPv6: ADDRCONF(NETDEV_UP): bond_slave_0: link is not ready [ 52.534769] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 52.542786] IPv6: ADDRCONF(NETDEV_UP): bond_slave_1: link is not ready [ 52.549608] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 52.557432] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 52.565808] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 52.572831] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 52.580694] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 52.588481] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 52.595723] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 52.603273] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.609792] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.618071] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 52.625592] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.632088] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.640600] device bridge_slave_0 entered promiscuous mode [ 52.647199] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 52.654372] device bridge_slave_1 entered promiscuous mode [ 52.661748] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 52.669251] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 52.676447] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 52.683720] IPv6: ADDRCONF(NETDEV_UP): bond_slave_0: link is not ready [ 52.690544] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 52.698257] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 52.706115] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 52.713070] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 52.720232] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 52.728255] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 52.735316] IPv6: ADDRCONF(NETDEV_UP): bond_slave_1: link is not ready [ 52.742226] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 52.749894] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 52.759041] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 52.766460] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.772957] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.779582] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 52.786933] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.793433] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.800007] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 52.807358] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.813852] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.820393] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 52.827756] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.834256] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.840856] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 52.849507] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 52.857456] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 52.864787] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 52.871665] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 52.878489] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 52.885753] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 52.893180] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 52.900818] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 52.907898] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 52.917030] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 52.924399] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 52.931497] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 52.940404] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 52.948210] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 52.957621] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 52.968900] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 52.979200] 8021q: adding VLAN 0 to HW filter on device bond0 [ 52.987523] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 52.995558] 8021q: adding VLAN 0 to HW filter on device bond0 [ 53.001793] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 53.009449] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 53.016650] 8021q: adding VLAN 0 to HW filter on device bond0 [ 53.022933] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 53.032042] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 53.039470] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 53.046249] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 53.052914] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 53.060756] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.067278] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.074391] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 53.081744] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.088269] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.095109] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 53.103138] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 53.111578] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 53.119557] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 53.126836] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 53.134429] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.141035] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.147876] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 53.155318] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.161804] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.169882] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 53.176728] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 53.184333] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 53.191537] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 53.198953] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.206449] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.213086] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 53.222197] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 53.229942] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 53.237492] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.244004] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.250550] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 53.257705] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 53.265802] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 53.274147] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 53.283904] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 67.623385] bridge0: port 1(bridge_slave_0) entered forwarding state [ 67.663384] bridge0: port 2(bridge_slave_1) entered forwarding state [ 67.783386] bridge0: port 1(bridge_slave_0) entered forwarding state [ 67.823384] bridge0: port 2(bridge_slave_1) entered forwarding state [ 67.829916] bridge0: port 1(bridge_slave_0) entered forwarding state [ 67.863382] bridge0: port 2(bridge_slave_1) entered forwarding state [ 68.103385] bridge0: port 1(bridge_slave_0) entered forwarding state [ 68.109924] bridge0: port 2(bridge_slave_1) entered forwarding state [ 68.143384] bridge0: port 1(bridge_slave_0) entered forwarding state [ 68.183383] bridge0: port 2(bridge_slave_1) entered forwarding state [ 68.223384] bridge0: port 1(bridge_slave_0) entered forwarding state [ 68.263387] bridge0: port 2(bridge_slave_1) entered forwarding state [ 283.043607] INFO: task khugepaged:871 blocked for more than 140 seconds. [ 283.051918] Not tainted 4.1.0 #1 [ 283.073395] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 283.083027] khugepaged D ffff88012b34fc30 14560 871 2 0x00000000 [ 283.098828] ffff88012b34fc30 0000000000000000 ffff88012b35c350 ffff88012a7086f8 [ 283.108955] ffff88012b350000 ffff88012a7086e0 ffffffffffffffff ffff88012a7086f8 [ 283.122564] 0000000000000000 ffff88012b34fc50 ffffffff826412d2 ffff88012a7086e0 [ 283.184158] Call Trace: [ 283.187584] [] schedule+0x32/0x80 [ 283.193078] [] rwsem_down_read_failed+0xb5/0x100 [ 283.200951] [] call_rwsem_down_read_failed+0x14/0x30 [ 283.208106] [] ? down_read+0x50/0x60 [ 283.214154] [] ? khugepaged+0x3d7/0x1870 [ 283.220533] [] ? _raw_spin_unlock+0x30/0x60 [ 283.226977] [] khugepaged+0x3d7/0x1870 [ 283.233241] [] ? wake_atomic_t_function+0x70/0x70 [ 283.240534] [] ? set_huge_zero_page.part.31+0xd0/0xd0 [ 283.248531] [] kthread+0xea/0x100 [ 283.254518] [] ? kthread_create_on_node+0x210/0x210 [ 283.261974] [] ret_from_fork+0x42/0x70 [ 283.269154] [] ? kthread_create_on_node+0x210/0x210 [ 283.277415] INFO: lockdep is turned off. [ 283.282273] sending NMI to all CPUs: [ 283.287170] NMI backtrace for cpu 0 [ 283.291983] CPU: 0 PID: 6180 Comm: syz-executor.4 Not tainted 4.1.0 #1 [ 283.301154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 283.312317] task: ffff8801296c0350 ti: ffff8801296f4000 task.ti: ffff8801296f4000 [ 283.320730] RIP: 0010:[] [] __mutex_unlock_slowpath+0x6b/0x2a0 [ 283.330814] RSP: 0018:ffff8801296f7cc8 EFLAGS: 00000082 [ 283.336730] RAX: 0000000000000286 RBX: ffff8800b1a3eac0 RCX: 0000000000000000 [ 283.346402] RDX: 0000000000009898 RSI: 0000000000000000 RDI: ffffffff8264457c [ 283.354116] RBP: ffff8801296f7ce8 R08: 0000000000000000 R09: 0000000000000000 [ 283.361566] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000286 [ 283.369348] R13: ffff8800b1a3eac8 R14: 0000000000000002 R15: 0000000000000000 [ 283.377522] FS: 00007fb802767700(0000) GS:ffff88012c000000(0000) knlGS:0000000000000000 [ 283.386160] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 283.392323] CR2: 00007fd9355c6140 CR3: 000000012939b000 CR4: 00000000001407f0 [ 283.400114] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 283.407785] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 283.415413] Stack: [ 283.417567] ffff8800b1a3e800 ffff8800b1a3eac0 ffff8800b7ec4dc0 0000000000000002 [ 283.425907] ffff8801296f7cf8 ffffffff826447c9 ffff8801296f7d68 ffffffff8126b650 [ 283.434021] ffff8801296f7d68 ffffffff812b6d05 ffff8800b68245e8 0000000000000000 [ 283.442287] Call Trace: [ 283.444891] [] mutex_unlock+0x9/0x10 [ 283.450543] [] perf_mmap+0x210/0x740 [ 283.456293] [] ? do_munmap+0x375/0x4e0 [ 283.462156] [] mmap_region+0x3f0/0x670 [ 283.468270] [] do_mmap_pgoff+0x317/0x400 [ 283.474330] [] vm_mmap_pgoff+0x90/0xc0 [ 283.480407] [] ? expand_files+0x270/0x270 [ 283.488050] [] SyS_mmap_pgoff+0x1d7/0x280 [ 283.495109] [] ? lockdep_sys_exit_thunk+0x12/0x14 [ 283.502802] [] SyS_mmap+0x16/0x30 [ 283.509155] [] system_call_fastpath+0x16/0x7a [ 283.516377] Code: 83 3d a9 13 bf 00 00 49 89 c4 0f 84 c0 01 00 00 fa 66 0f 1f 44 00 00 e8 14 c5 b7 fe 4c 8d 6b 08 ba 00 02 00 00 f0 66 0f c1 53 08 <0f> b6 ce 38 d1 0f 85 a2 01 00 00 8b 15 bc e2 c6 01 85 d2 0f 84 [ 283.539658] NMI backtrace for cpu 1 [ 283.543722] CPU: 1 PID: 867 Comm: khungtaskd Not tainted 4.1.0 #1 [ 283.550937] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 283.561146] task: ffff88012b0e4b10 ti: ffff88012ad44000 task.ti: ffff88012ad44000 [ 283.569670] RIP: 0010:[] [] native_write_msr_safe+0xa/0x10 [ 283.579128] RSP: 0018:ffff88012ad47d08 EFLAGS: 00000082 [ 283.585447] RAX: 0000000000000400 RBX: 0000000000000001 RCX: 0000000000000830 [ 283.593886] RDX: 0000000000000001 RSI: 0000000000000400 RDI: 0000000000000830 [ 283.601669] RBP: ffff88012ad47d08 R08: 0000000000000000 R09: 0000000000000003 [ 283.610123] R10: ffff88012b0e4b10 R11: 0000000000000001 R12: ffffffff8341a808 [ 283.617908] R13: 0000000000080000 R14: 0000000000000001 R15: 000000000000a120 [ 283.625621] FS: 0000000000000000(0000) GS:ffff88012c100000(0000) knlGS:0000000000000000 [ 283.633967] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 283.639853] CR2: 0000000000625208 CR3: 000000012939b000 CR4: 00000000001407e0 [ 283.647736] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 283.655465] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 283.663387] Stack: [ 283.665558] ffff88012ad47d68 ffffffff810c502f ffff88012ad47d78 0000000000000296 [ 283.676251] 000000022b35c350 0000000000000002 ffff88012ad47d88 0000000000000040 [ 283.684575] 000000000000d3c0 0000000000000001 ffff88012b35c350 000000000000008c [ 283.693895] Call Trace: [ 283.696478] [] __x2apic_send_IPI_mask+0x10f/0x1a0 [ 283.703055] [] x2apic_send_IPI_mask+0xe/0x10 [ 283.709488] [] arch_trigger_all_cpu_backtrace+0x33d/0x350 [ 283.717393] [] watchdog+0x47e/0x6c0 [ 283.722759] [] ? watchdog+0x8a/0x6c0 [ 283.728955] [] ? __schedule+0x388/0x9e0 [ 283.735049] [] ? reset_hung_task_detector+0x10/0x10 [ 283.742527] [] kthread+0xea/0x100 [ 283.749539] [] ? kthread_create_on_node+0x210/0x210 [ 283.758727] [] ret_from_fork+0x42/0x70 [ 283.764658] [] ? kthread_create_on_node+0x210/0x210 [ 283.772878] Code: 00 55 89 f9 48 89 e5 0f 32 45 31 c0 48 89 d7 44 89 06 89 c6 5d 48 c1 e7 20 48 89 f8 48 09 f0 c3 90 55 89 f0 89 f9 48 89 e5 0f 30 <31> c0 5d c3 66 90 55 89 f9 48 89 e5 0f 33 48 89 d7 89 c1 5d 48 [ 284.303410] Kernel panic - not syncing: hung_task: blocked tasks [ 284.312292] CPU: 0 PID: 867 Comm: khungtaskd Not tainted 4.1.0 #1 [ 284.319608] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 284.329949] 00000000003fffe5 ffff88012ad47d58 ffffffff82638efb 0000000000000034 [ 284.338899] ffffffff82e3726d ffff88012ad47dd8 ffffffff82634d8e 0000000000000001 [ 284.347616] 0000000000000008 ffff88012ad47de8 ffff88012ad47d88 ffff88012ad47dd8 [ 284.357900] Call Trace: [ 284.360692] [] dump_stack+0x4f/0x7b [ 284.366392] [] panic+0xcd/0x211 [ 284.372014] [] watchdog+0x48c/0x6c0 [ 284.378326] [] ? watchdog+0x8a/0x6c0 [ 284.384079] [] ? __schedule+0x388/0x9e0 [ 284.389901] [] ? reset_hung_task_detector+0x10/0x10 [ 284.397256] [] kthread+0xea/0x100 [ 284.402363] [] ? kthread_create_on_node+0x210/0x210 [ 284.409286] [] ret_from_fork+0x42/0x70 [ 284.414834] [] ? kthread_create_on_node+0x210/0x210 [ 284.423594] Kernel Offset: disabled