F.Y.I. Here is the kernel panic message. You can google for "PANIC: double fault, error_code: 0x0".
[ 193.361839] PANIC: double fault, error_code: 0x0 [ 193.363960] Kernel panic - not syncing: Machine halted. [ 193.366020] CPU: 1 PID: 1822 Comm: a.out Not tainted 3.13.0-140-generic #189-Ubuntu [ 193.368882] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 07/02/2015 [ 193.371892] 0000000000000000 ffff88013a627e90 ffffffff8172e82c ffffffff81a44fd6 [ 193.374275] 0000000000000000 ffff88013a627f08 ffffffff8172764f ffff880100000008 [ 193.376712] ffff88013a627f18 ffff88013a627eb8 000000000000304a 0000000000000046 [ 193.379181] Call Trace: [ 193.379957] <#DF> [<ffffffff8172e82c>] dump_stack+0x64/0x82 [ 193.381810] [<ffffffff8172764f>] panic+0xc8/0x1e1 [ 193.383271] [<ffffffff8104daf1>] df_debug+0x31/0x40 [ 193.384737] [<ffffffff81015a40>] do_double_fault+0x80/0x100 [ 193.386361] [<ffffffff81742bb8>] double_fault+0x28/0x30 [ 193.387891] [<ffffffff8174321f>] ? ia32_sysenter_target+0x4f/0x195 [ 193.389691] <<EOE>> [ 193.390626] Kernel Offset: 0x0 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffff9fffffff) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1744199 Title: ubuntu_32_on_64 test crash Trusty 3.13.0-140 amd64 system Status in linux package in Ubuntu: Confirmed Bug description: THIS IS A POTENTIAL REGRESSION Steps: 1. Deploy a Trusty amd64 node (node pepe in this case) 2. sudo apt-get install git python-minimal -y 3. git clone --depth=1 git://kernel.ubuntu.com/ubuntu/autotest-client-tests -b master-next 4. git clone --depth=1 git://kernel.ubuntu.com/ubuntu/autotest 5. rm -fr autotest/client/tests 6. ln -sf ~/autotest-client-tests autotest/client/tests 7. Monitor the syslog with tail -f /var/log/syslog 8. AUTOTEST_PATH=/home/ubuntu/autotest sudo -E autotest/client/autotest-local --verbose autotest/client/tests/ubuntu_32_on_64/control.ubuntu Result: * The system will hang without any output in syslog. I can't see any error message from ipmi output as well. This test can pass with 3.13.0-139 Output: ubuntu@pepe:~$ AUTOTEST_PATH=/home/ubuntu/autotest sudo -E autotest/client/autotest-local --verbose autotest/client/tests/ubuntu_32_on_64/control.ubuntu 03:53:08 INFO | Writing results to /home/ubuntu/autotest/client/results/default 03:53:08 DEBUG| Initializing the state engine 03:53:08 DEBUG| Persistent state client.steps now set to [] 03:53:08 DEBUG| Persistent option harness now set to None 03:53:08 DEBUG| Persistent option harness_args now set to None 03:53:08 DEBUG| Selected harness: standalone 03:53:08 INFO | START ---- ---- timestamp=1516333988 localtime=Jan 19 03:53:08 03:53:08 DEBUG| Persistent state client._record_indent now set to 1 03:53:08 INFO | START ubuntu_32_on_64 ubuntu_32_on_64 timestamp=1516333988 localtime=Jan 19 03:53:08 03:53:08 DEBUG| Persistent state client._record_indent now set to 2 03:53:08 DEBUG| Persistent state client.unexpected_reboot now set to ('ubuntu_32_on_64', 'ubuntu_32_on_64') 03:53:08 WARNI| Could not find GDB installed. Crash handling will operate with limited functionality 03:53:08 DEBUG| Running 'apt-get install --yes --force-yes build-essential gcc-multilib' 03:53:08 DEBUG| [stdout] Reading package lists... 03:53:08 DEBUG| [stdout] Building dependency tree... 03:53:08 DEBUG| [stdout] Reading state information... 03:53:09 DEBUG| [stdout] build-essential is already the newest version. 03:53:09 DEBUG| [stdout] gcc-multilib is already the newest version. 03:53:09 DEBUG| [stdout] 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. 03:53:09 DEBUG| Running 'which gcc' 03:53:09 DEBUG| [stdout] /usr/bin/gcc 03:53:09 DEBUG| Running '/home/ubuntu/autotest/client/tmp/ubuntu_32_on_64/src/forkexec date' ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-140-generic 3.13.0-140.189 ProcVersionSignature: User Name 3.13.0-140.189-generic 3.13.11-ckt39 Uname: Linux 3.13.0-140-generic x86_64 AlsaDevices: total 0 crw-rw---- 1 root audio 116, 1 Jan 19 03:43 seq crw-rw---- 1 root audio 116, 33 Jan 19 03:43 timer AplayDevices: Error: [Errno 2] No such file or directory: 'aplay' ApportVersion: 2.14.1-0ubuntu3.27 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord' AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: Date: Fri Jan 19 03:44:08 2018 IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig' Lsusb: Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 003: ID 0424:2514 Standard Microsystems Corp. USB 2.0 Hub Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Dell Inc. PowerEdge R310 PciMultimedia: ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-140-generic root=UUID=7b91a2b8-2e02-407e-a51d-766f6d969020 ro RelatedPackageVersions: linux-restricted-modules-3.13.0-140-generic N/A linux-backports-modules-3.13.0-140-generic N/A linux-firmware 1.127.24 RfKill: Error: [Errno 2] No such file or directory: 'rfkill' SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/17/2011 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.8.2 dmi.board.name: 05XKKK dmi.board.vendor: Dell Inc. dmi.board.version: A05 dmi.chassis.type: 23 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.8.2:bd08/17/2011:svnDellInc.:pnPowerEdgeR310:pvr:rvnDellInc.:rn05XKKK:rvrA05:cvnDellInc.:ct23:cvr: dmi.product.name: PowerEdge R310 dmi.sys.vendor: Dell Inc. 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