Steve,
Can Foundations take a look at this request, please.
Michael
On 02/07/2017 12:39 PM, Launchpad Bug Tracker wrote: > bugproxy (bugproxy) has assigned this bug to you for Ubuntu: > > -- Problem Description -- > The following upstream patches are needed for Ubuntu to fix a hang situation reported when executing ppc64_cpu --smt=on that occurs with various disk types. We need whichever ones have not yet been pulled into the base. > > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e57690fe009b2ab0cee8a57f53be634540e49c9d > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0e87e58bf60edb6bb28e493c7a143f41b091a5e5 > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=135e8c9250dd5c8c9aae5984fde6f230d0cbfeaf > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c02ebfdddbafa9a6a0f52fbd715e6bfa229af9d3 > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d1b1cea1e58477dad88ff769f54c0d2dfa56d923 > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=36e1f3d107867b25c616c2fd294f5a1c9d4e5d09 > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=71f79fb3179e69b0c1448a2101a866d871c66e7f > > The hang problem can be reproduced with the following shell script using > an NVMe device executed on kernel versions 4.4.0-45 and 4.4.0-59 within > 30 minutes. It was also reproduced on a 4.8.0-32-generic kernel, > although it took over 3 hours to manifest. > > #!/bin/bash > > if [[ ${#} -eq 0 ]]; then > ${0} breaker & > while true; do > dd if=/dev/nvme0n1 bs=1024k of=/dev/null > done > elif [[ ${1} == "breaker" ]]; then > while true; do > ppc64_cpu --smt=off > sleep 5 > ppc64_cpu --smt=on > sleep 5 > done > fi > > ** Affects: ubuntu > Importance: Undecided > Assignee: Taco Screen team (taco-screen-team) > Status: New > > > ** Tags: architecture-ppc64le bugnameltc-146759 severity-critical targetmilestone-inin16041
-- Michael Hohnbaum OIL Program Manager Power (ppc64el) Development Project Manager Canonical, Ltd.
Steve,
Can Foundations take a look at this request, please.
On 02/07/2017 12:39 PM, Launchpad Bug Tracker wrote: /git.kernel. org/cgit/ linux/kernel/ git/torvalds/ linux.git/ commit/ ?id=e57690fe009 b2ab0cee8a57f53 be634540e49c9d /git.kernel. org/cgit/ linux/kernel/ git/torvalds/ linux.git/ commit/ ?id=0e87e58bf60 edb6bb28e493c7a 143f41b091a5e5 /git.kernel. org/cgit/ linux/kernel/ git/torvalds/ linux.git/ commit/ ?id=135e8c9250d d5c8c9aae5984fd e6f230d0cbfeaf /git.kernel. org/cgit/ linux/kernel/ git/torvalds/ linux.git/ commit/ ?id=c02ebfdddba fa9a6a0f52fbd71 5e6bfa229af9d3 /git.kernel. org/cgit/ linux/kernel/ git/torvalds/ linux.git/ commit/ ?id=d1b1cea1e58 477dad88ff769f5 4c0d2dfa56d923 /git.kernel. org/cgit/ linux/kernel/ git/torvalds/ linux.git/ commit/ ?id=36e1f3d1078 67b25c616c2fd29 4f5a1c9d4e5d09 /git.kernel. org/cgit/ linux/kernel/ git/torvalds/ linux.git/ commit/ ?id=71f79fb3179 e69b0c1448a2101 a866d871c66e7f ppc64le bugnameltc-146759 severity-critical targetmilestone -inin16041
> bugproxy (bugproxy) has assigned this bug to you for Ubuntu:
>
> -- Problem Description --
> The following upstream patches are needed for Ubuntu to fix a hang situation reported when executing ppc64_cpu --smt=on that occurs with various disk types. We need whichever ones have not yet been pulled into the base.
>
> https:/
> https:/
> https:/
> https:/
> https:/
> https:/
> https:/
>
> The hang problem can be reproduced with the following shell script using
> an NVMe device executed on kernel versions 4.4.0-45 and 4.4.0-59 within
> 30 minutes. It was also reproduced on a 4.8.0-32-generic kernel,
> although it took over 3 hours to manifest.
>
> #!/bin/bash
>
> if [[ ${#} -eq 0 ]]; then
> ${0} breaker &
> while true; do
> dd if=/dev/nvme0n1 bs=1024k of=/dev/null
> done
> elif [[ ${1} == "breaker" ]]; then
> while true; do
> ppc64_cpu --smt=off
> sleep 5
> ppc64_cpu --smt=on
> sleep 5
> done
> fi
>
> ** Affects: ubuntu
> Importance: Undecided
> Assignee: Taco Screen team (taco-screen-team)
> Status: New
>
>
> ** Tags: architecture-
--
Michael Hohnbaum
OIL Program Manager
Power (ppc64el) Development Project Manager
Canonical, Ltd.