= bionic verification = After running cert: ubuntu@d06-4:~$ cat /proc/version Linux version 4.15.0-47-generic (buildd@bos02-arm64-022) (gcc version 7.3.0 (Ubuntu/Linaro 7.3.0-16ubuntu3)) #50-Ubuntu SMP Wed Mar 13 10:42:02 UTC 2019 ubuntu@d06-4:~$ dmesg | grep CMD_SYNC ubuntu@d06-4:~$
** Tags removed: verification-needed-bionic ** Tags added: verification-done-bionic -- 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/1818162 Title: arm-smmu-v3 arm-smmu-v3.3.auto: CMD_SYNC timeout Status in linux package in Ubuntu: Fix Committed Status in linux source package in Bionic: Fix Committed Status in linux source package in Cosmic: Fix Committed Bug description: [Impact] During heavy load, the following message may appear on the console of a HiSilicon D06 system: arm-smmu-v3 arm-smmu-v3.3.auto: CMD_SYNC timeout This is due to a bug that can also impact system performance, as the CPU is blocked until the timeout occurs. [Test Case] The Ubuntu server certification test suite hits this pretty reliably during the stress-ng tests, although I haven't narrowed it down to exactly which test yet. [Fix] 0f02477d16980 iommu/arm-smmu-v3: Fix unexpected CMD_SYNC timeout [Regression Risk] Limited to arm64 systems. This change has been upstream since 4.20 w/o any noticed regressions (based on lack of Fixes: commits). Regressions could manifest as a performance hit. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1818162/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
