Bug 1709480 - Kerneltest-5.1.iso /default/timer-overhead test failed under VirtualBox 6.0.6 r1300049
Summary: Kerneltest-5.1.iso /default/timer-overhead test failed under VirtualBox 6.0....
Status: NEW
Alias: None
Product: Fedora
Classification: Fedora
Component: kernel
Version: rawhide
Hardware: x86_64
OS: Linux
Target Milestone: ---
Assignee: Kernel Maintainer List
QA Contact: Fedora Extras Quality Assurance
Depends On:
TreeView+ depends on / blocked
Reported: 2019-05-13 16:52 UTC by Michael Erwin
Modified: 2019-05-13 16:52 UTC (History)
16 users (show)

Fixed In Version:
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Description Michael Erwin 2019-05-13 16:52:26 UTC
1. Please describe the problem:

Running Kerneltest-5.1.iso for Kernel 5.1 test day.
Running under VirtualBox Version 6.0.6 r130049 (Qt5.6.1)
VM Settings: 2 CPU, 4GB RAM, 128MB VSGA

sudo ./runtests.sh

Test suite called with default
./default/paxtest                                                PASS    
./default/cachedrop                                              PASS    
./default/mq-memory-corruption                                   PASS    
./default/libhugetlbfs                                           SKIP    
./default/timer-overhead                                         FAIL    
./default/memfd                                                  PASS    
./default/sysfs-perms                                            PASS    
./default/selinux-dac-controls                                   PASS    
./default/posix_timers                                           PASS    

details from the kernel-tests/logs/kernel-test-1557764647.log.txt

memfd: SHARE-DUP (shared file-table)
memfd: SHARE-MMAP (shared file-table)
memfd: SHARE-OPEN (shared file-table)
memfd: SHARE-FORK (shared file-table)
memfd: DONE
Starting test ./default/sysfs-perms
Starting test ./default/selinux-dac-controls
Starting test ./default/posix_timers
Testing posix timers. False negative may happen on CPU execution 
based timers if other threads run on the CPU...
Check itimer virtual... Diff too high: 2665487..[FAIL]

2. What is the Version-Release number of the kernel:
Linux localhost 5.1.1-300.fc30.x86_64 #1 SMP Sat May 11 17:15:05 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

3. Did it work previously in Fedora? If so, what kernel version did the issue
   *first* appear?  Old kernels are available for download at
   https://koji.fedoraproject.org/koji/packageinfo?packageID=8 :

4. Can you reproduce this issue? If so, please provide the steps to reproduce
   the issue below:

5. Does this problem occur with the latest Rawhide kernel? To install the
   Rawhide kernel, run ``sudo dnf install fedora-repos-rawhide`` followed by
   ``sudo dnf update --enablerepo=rawhide kernel``:

6. Are you running any modules that not shipped with directly Fedora's kernel?:

7. Please attach the kernel logs. You can get the complete kernel log
   for a boot with ``journalctl --no-hostname -k > dmesg.txt``. If the
   issue occurred on a previous boot, use the journalctl ``-b`` flag.

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