test_too_early_vsyscall from ubuntu_qrt_kernel_panic crashes Trusty 3.13.0-140 amd64 system

[Po-Hsu Lin]

This is a potential regression.

The system will hang when running the test_too_early_vsyscall from ubuntu_qrt_kernel_panic test suite with the proposed 3.13.0-140 kernel.

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_qrt_kernel_panic/control

Results:
* The system will hang, no output from syslog. This test can pass with 3.13.0-139

Output with 3.13.0-140
ubuntu@onibi:~$ AUTOTEST_PATH=/home/ubuntu/autotest sudo -E autotest/client/autotest-local --verbose autotest/client/tests/ubuntu_qrt_kernel_panic/control
06:39:30 INFO | Writing results to /home/ubuntu/autotest/client/results/default
06:39:30 DEBUG| Initializing the state engine
06:39:30 DEBUG| Persistent state client.steps now set to []
06:39:30 DEBUG| Persistent option harness now set to None
06:39:30 DEBUG| Persistent option harness_args now set to None
06:39:30 DEBUG| Selected harness: standalone
06:39:31 INFO | START ---- ---- timestamp=1516343971 localtime=Jan 19 06:39:31
06:39:31 DEBUG| Persistent state client._record_indent now set to 1
06:39:31 INFO | START ubuntu_qrt_kernel_panic.setup ubuntu_qrt_kernel_panic.setup timestamp=1516343971 localtime=Jan 19 06:39:31
06:39:31 DEBUG| Persistent state client._record_indent now set to 2
06:39:31 DEBUG| Persistent state client.unexpected_reboot now set to ('ubuntu_qrt_kernel_panic.setup', 'ubuntu_qrt_kernel_panic.setup')
06:39:31 DEBUG| Running 'apt-get install --yes --force-yes git build-essential libcap2-bin gawk execstack exim4 libcap-dev libkeyutils-dev gcc-multilib'
06:39:31 DEBUG| [stdout] Reading package lists...
06:39:33 DEBUG| [stdout] Building dependency tree...
06:39:33 DEBUG| [stdout] Reading state information...
06:39:33 DEBUG| [stdout] build-essential is already the newest version.
06:39:33 DEBUG| [stdout] execstack is already the newest version.
06:39:33 DEBUG| [stdout] gawk is already the newest version.
06:39:33 DEBUG| [stdout] gcc-multilib is already the newest version.
06:39:33 DEBUG| [stdout] libcap-dev is already the newest version.
06:39:33 DEBUG| [stdout] libcap2-bin is already the newest version.
06:39:33 DEBUG| [stdout] libkeyutils-dev is already the newest version.
06:39:33 DEBUG| [stdout] exim4 is already the newest version.
06:39:33 DEBUG| [stdout] git is already the newest version.
06:39:33 DEBUG| [stdout] 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
06:39:33 DEBUG| Running 'which gcc'
06:39:33 DEBUG| [stdout] /usr/bin/gcc
06:39:33 INFO | GOOD ubuntu_qrt_kernel_panic.setup ubuntu_qrt_kernel_panic.setup timestamp=1516343973 localtime=Jan 19 06:39:33 completed successfully
06:39:33 INFO | END GOOD ubuntu_qrt_kernel_panic.setup ubuntu_qrt_kernel_panic.setup timestamp=1516343973 localtime=Jan 19 06:39:33
06:39:33 DEBUG| Persistent state client._record_indent now set to 1
06:39:33 DEBUG| Persistent state client.unexpected_reboot deleted
06:39:33 INFO | START ubuntu_qrt_kernel_panic.test-kernel-panic.py ubuntu_qrt_kernel_panic.test-kernel-panic.py timestamp=1516343973 localtime=Jan 19 06:39:33
06:39:33 DEBUG| Persistent state client._record_indent now set to 2
06:39:33 DEBUG| Persistent state client.unexpected_reboot now set to ('ubuntu_qrt_kernel_panic.test-kernel-panic.py', 'ubuntu_qrt_kernel_panic.test-kernel-panic.py')
06:39:33 DEBUG| Running 'apt-get install --yes --force-yes git build-essential libcap2-bin gawk execstack exim4 libcap-dev libkeyutils-dev gcc-multilib'
06:39:33 DEBUG| [stdout] Reading package lists...
06:39:33 DEBUG| [stdout] Building dependency tree...
06:39:34 DEBUG| [stdout] Reading state information...
06:39:34 DEBUG| [stdout] build-essential is already the newest version.
06:39:34 DEBUG| [stdout] execstack is already the newest version.
06:39:34 DEBUG| [stdout] gawk is already the newest version.
06:39:34 DEBUG| [stdout] gcc-multilib is already the newest version.
06:39:34 DEBUG| [stdout] libcap-dev is already the newest version.
06:39:34 DEBUG| [stdout] libcap2-bin is already the newest version.
06:39:34 DEBUG| [stdout] libkeyutils-dev is already the newest version.
06:39:34 DEBUG| [stdout] exim4 is already the newest version.
06:39:34 DEBUG| [stdout] git is already the newest version.
06:39:34 DEBUG| [stdout] 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
06:39:34 DEBUG| Running 'which gcc'
06:39:34 DEBUG| [stdout] /usr/bin/gcc
06:39:34 DEBUG| Running 'python ./test-kernel-panic.py -v'
06:39:34 DEBUG| [stdout] Running test: './test-kernel-panic.py' distro: 'Ubuntu 14.04' kernel: '3.13.0-140.189 (Ubuntu 3.13.0-140.189-generic 3.13.11-ckt39)' arch: 'amd64' uid: 0/0 SUDO_USER: 'ubuntu')
06:39:34 ERROR| [stderr] test_cve_2013_2094 (__main__.KernelPanicTest)
06:39:35 ERROR| [stderr] test linux kernel perf out-of-bounds access (CVE-2013-2094) ... ok
06:39:35 ERROR| [stderr] test_cve_2015_7550 (__main__.KernelPanicTest)
06:39:36 DEBUG| [stdout] Skipping private tests
06:39:36 DEBUG| [stdout]
06:43:24 ERROR| [stderr] test linux kernel keyctl race (CVE-2015-7550) ... ok
06:43:24 ERROR| [stderr] test_too_early_vsyscall (__main__.KernelPanicTest)

It stops here.

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 06:49 seq
 crw-rw---- 1 root audio 116, 33 Jan 19 06:49 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:
CurrentDmesg:
 [ 24.461736]
 [ 24.461818] IPv6: ADDRCONF(NETDEV_CHANGE): eno1: link becomes ready
 [ 28.192436] init: plymouth-upstart-bridge main process ended, respawning
Date: Fri Jan 19 06:56:51 2018
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
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=ded56b2d-3057-4d58-a1e5-422853291ffd 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.

[Po-Hsu Lin (cypressyew)]

Report with 3.13.0-139

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This change was made by a bot.

[Po-Hsu Lin (cypressyew)]

Tested with the same kernel in bug 1744199 from smb, it works

ubuntu@onibi:~$ AUTOTEST_PATH=/home/ubuntu/autotest sudo -E autotest/client/autotest-local --verbose autotest/client/tests/ubuntu_qrt_kernel_panic/control
10:34:34 INFO | Writing results to /home/ubuntu/autotest/client/results/default
10:34:34 DEBUG| Initializing the state engine
10:34:34 DEBUG| Persistent state client.steps now set to []
10:34:34 DEBUG| Persistent option harness now set to None
10:34:34 DEBUG| Persistent option harness_args now set to None
10:34:34 DEBUG| Selected harness: standalone
10:34:34 INFO | START ---- ---- timestamp=1516358074 localtime=Jan 19 10:34:34
10:34:34 DEBUG| Persistent state client._record_indent now set to 1
10:34:34 INFO | START ubuntu_qrt_kernel_panic.setup ubuntu_qrt_kernel_panic.setup timestamp=1516358074 localtime=Jan 19 10:34:34
10:34:34 DEBUG| Persistent state client._record_indent now set to 2
10:34:34 DEBUG| Persistent state client.unexpected_reboot now set to ('ubuntu_qrt_kernel_panic.setup', 'ubuntu_qrt_kernel_panic.setup')
10:34:34 WARNI| Could not find GDB installed. Crash handling will operate with limited functionality
10:34:34 DEBUG| Running 'apt-get install --yes --force-yes git build-essential libcap2-bin gawk execstack exim4 libcap-dev libkeyutils-dev gcc-multilib'
10:34:34 DEBUG| [stdout] Reading package lists...
10:34:35 DEBUG| [stdout] Building dependency tree...
10:34:35 DEBUG| [stdout] Reading state information...
10:34:35 DEBUG| [stdout] build-essential is already the newest version.
10:34:35 DEBUG| [stdout] gawk is already the newest version.
10:34:35 DEBUG| [stdout] gcc-multilib is already the newest version.
10:34:35 DEBUG| [stdout] libcap2-bin is already the newest version.
10:34:35 DEBUG| [stdout] git is already the newest version.
10:34:35 DEBUG| [stdout] Suggested packages:
10:34:35 DEBUG| [stdout] mail-reader eximon4 exim4-doc-html exim4-doc-info spf-tools-perl swaks
10:34:35 DEBUG| [stdout] Recommended packages:
10:34:35 DEBUG| [stdout] mailx
10:34:35 DEBUG| [stdout] The following NEW packages will be installed:
10:34:35 DEBUG| [stdout] execstack exim4 exim4-base exim4-config exim4-daemon-light heirloom-mailx
10:34:35 DEBUG| [stdout] libcap-dev libelfg0 libkeyutils-dev
10:34:35 DEBUG| [stdout] 0 upgraded, 9 newly installed, 0 to remove and 11 not upgraded.
10:34:35 DEBUG| [stdout] Need to get 1,977 kB of archives.
10:34:35 DEBUG| [stdout] After this operation, 4,891 kB of additional disk space will be used.
10:34:35 DEBUG| [stdout] Get:1 http://archive.ubuntu.com/ubuntu/ trusty/main libelfg0 amd64 0.8.13-5 [37.6 kB]
10:34:35 DEBUG| [stdout] Get:2 http://archive.ubuntu.com/ubuntu/ trusty/main execstack amd64 0.0.20090925-8 [72.2 kB]
10:34:35 DEBUG| [stdout] Get:3 http://archive.ubuntu.com/ubuntu/ trusty-updates/main exim4-config all 4.82-3ubuntu2.3 [298 kB]
10:34:35 DEBUG| [stdout] Get:4 http://archive.ubuntu.com/ubuntu/ trusty-updates/main exim4-base amd64 4.82-3ubuntu2.3 [854 kB]
10:34:35 DEBUG| [stdout] Get:5 http://archive.ubuntu.com/ubuntu/ trusty-updates/main exim4-daemon-light amd64 4.82-3ubuntu2.3 [436 kB]
10:34:35 DEBUG| [stdout] Get:6 http://archive.ubuntu.com/ubuntu/ trusty-updates/main e...

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 3.13.0-141.190

---------------
linux (3.13.0-141.190) trusty; urgency=low

  * linux: 3.13.0-141.190 -proposed tracker (LP: #1744308)

  * ubuntu_32_on_64 test crash Trusty 3.13.0-140 amd64 system (LP: #1744199) //
    test_too_early_vsyscall from ubuntu_qrt_kernel_panic crashes Trusty
    3.13.0-140 amd64 system (LP: #1744226) // CVE-2017-5715 // CVE-2017-5753
    - SAUCE: x86/entry: Fixup 32bit compat call locations

  * CVE-2017-5715 // CVE-2017-5753
    - SAUCE: x86/cpuid: Fix ordering of scattered feature list
    - SAUCE: KVM: Fix spec_ctrl CPUID support for guests

  * CVE-2017-5754
    - kaiser: Set _PAGE_NX only if supported
    - kaiser: Set _PAGE_NX only if supported

linux (3.13.0-140.189) trusty; urgency=low

  * linux: 3.13.0-140.189 -proposed tracker (LP: #1743375)

  [ Stefan Bader ]
  * CVE-2017-5715 // CVE-2017-5753
    - x86, microcode: Share native MSR accessing variants
    - x86: Add another set of MSR accessor functions
    - x86/cpuid: Provide get_scattered_cpuid_leaf()
    - kvm: vmx: Scrub hardware GPRs at VM-exit
    - SAUCE: locking/barriers: introduce new memory barrier gmb()
    - SAUCE: uvcvideo: prevent speculative execution
    - SAUCE: carl9170: prevent speculative execution
    - SAUCE: p54: prevent speculative execution
    - SAUCE: qla2xxx: prevent speculative execution
    - SAUCE: cw1200: prevent speculative execution
    - SAUCE: userns: prevent speculative execution
    - SAUCE: fs: prevent speculative execution
    - SAUCE: udf: prevent speculative execution
    - SAUCE: x86/feature: Enable the x86 feature to control Speculation
    - SAUCE: x86/feature: Report presence of IBPB and IBRS control
    - SAUCE: x86/enter: MACROS to set/clear IBRS and set IBPB
    - SAUCE: x86/enter: Use IBRS on syscall and interrupts
    - SAUCE: x86/idle: Disable IBRS entering idle and enable it on wakeup
    - SAUCE: x86/idle: Disable IBRS when offlining cpu and re-enable on wakeup
    - SAUCE: x86/mm: Set IBPB upon context switch
    - SAUCE: x86/mm: Only set IBPB when the new thread cannot ptrace current
      thread
    - SAUCE: x86/entry: Stuff RSB for entry to kernel for non-SMEP platform
    - SAUCE: x86/kvm: add MSR_IA32_SPEC_CTRL and MSR_IA32_PRED_CMD to kvm
    - SAUCE: x86/kvm: Set IBPB when switching VM
    - SAUCE: x86/kvm: Toggle IBRS on VM entry and exit
    - SAUCE: x86/kvm: Pad RSB on VM transition
    - SAUCE: x86/spec_ctrl: Add sysctl knobs to enable/disable SPEC_CTRL feature
    - SAUCE: x86/spec_ctrl: Add lock to serialize changes to ibrs and ibpb control
    - SAUCE: x86/entry: Use retpoline for syscall's indirect calls
    - SAUCE: x86/cpu/AMD: Add speculative control support for AMD
    - SAUCE: x86/microcode: Extend post microcode reload to support IBPB feature
    - SAUCE: KVM: SVM: Do not intercept new speculative control MSRs
    - SAUCE: x86/svm: Set IBRS value on VM entry and exit
    - SAUCE: x86/svm: Set IBPB when running a different VCPU
    - SAUCE: KVM: x86: Add speculative control CPUID support for guests
    - SAUCE: x86/svm: Add code to clobber the RSB on VM exit
    - SAUCE: x86/cpu/AMD: Make the LFENCE instruction serialized
    - SAUCE: x...