Public bug reported: == Comment: #0 - Frederic Barrat <frederic.bar...@fr.ibm.com> - 2017-04-10 04:44:01 ==
---Problem Description--- Memory corruption can be seen when using a capi adapter. It can happen if the host process allocates/frees/reallocates memory areas used by the the capi adapter. Some TLB invalidations may not be propagated to the capi adapter, causing the corruption. Contact Information = frederic.bar...@fr.ibm.com ---uname output--- Linux garri 4.4.0-72-generic #93-Ubuntu SMP Fri Mar 31 14:05:15 UTC 2017 ppc64le ppc64le ppc64le GNU/Linux ---Additional Hardware Info--- capi card needed, with the AFU image used by libdonut development Machine Type = Tuleta ---Debugger--- A debugger is not configured ---Steps to Reproduce--- Run libdonut in a loop, until corruption is seen. Host process will dump core Stack trace output: no Oops output: no System Dump Info: The system is not configured to capture a system dump. *Additional Instructions for frederic.bar...@fr.ibm.com: -Attach sysctl -a output output to the bug. == Comment: #1 - Frederic Barrat <frederic.bar...@fr.ibm.com> - 2017-04-10 04:45:19 == Fix is already upstream: commit 88b1bf7268f56887ca88eb09c6fb0f4fc970121a Author: Frederic Barrat <fbar...@linux.vnet.ibm.com> Date: Wed Mar 29 19:19:42 2017 +0200 powerpc/mm: Add missing global TLB invalidate if cxl is active Could it be backported to the 16.04 LTS release, as well as 17.04? Thanks ** Affects: linux (Ubuntu) Importance: Undecided Assignee: Taco Screen team (taco-screen-team) Status: New ** Tags: architecture-ppc64le bugnameltc-153279 severity-high targetmilestone-inin16045 ** Tags added: architecture-ppc64le bugnameltc-153279 severity-high targetmilestone-inin16045 ** Changed in: ubuntu Assignee: (unassigned) => Taco Screen team (taco-screen-team) ** Package changed: ubuntu => linux (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1681469 Title: Potential memory corruption with capi adapters To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1681469/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs