This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed- artful' to 'verification-done-artful'. If the problem still exists, change the tag 'verification-needed-artful' to 'verification-failed- artful'.
If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: verification-needed-artful -- 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/1772593 Title: cpum_sf: ensure sample freq is non-zero Status in Ubuntu on IBM z Systems: Fix Committed Status in linux package in Ubuntu: Fix Committed Status in linux source package in Xenial: Fix Committed Status in linux source package in Artful: Fix Committed Status in linux source package in Bionic: Fix Committed Bug description: == SRU Justification == A regression was introduced by commit 8c069ff4bd606 in v3.14-rc1. IBM is requested commit 4bbaf2584b86 in all Ubuntu kernels to resolve this isue. Bug Description: cpum_sf: ensure sample freq is non-zero Symptom: A kernel crash might occur. Problem: An FP divide exception during the sample rate initialization for the hardware sampling facility. Solution: Ensure that the sample frequency of the perf event attribute is non-zero. == Fix == 4bbaf2584b86 ("s390/cpum_sf: ensure sample frequency of perf event attributes is non-zero") == Regression Potential == Low. Fix is specific to s390. == Test Case == A test kernel was built with this patch and tested by the original bug reporter. The bug reporter states the test kernel resolved the bug. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1772593/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : email@example.com Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp