Public bug reported: == Comment: #0 - NAGESWARA R. SASTRY <nasas...@in.ibm.com> - 2017-08-28 02:18:19 == ---Problem Description--- When passed a -ve number to 'maxcpus' parameter. Qemu stops with a trap Contact Information = nasas...@in.ibm.com ---uname output--- Linux ltc-boston25 4.13.0-041300rc3-generic #201707301631 SMP Sun Jul 30 21:06:34 UTC 2017 ppc64le ppc64le ppc64le GNU/Linux Machine Type = P9 Boston ---Debugger--- A debugger is not configured ---Steps to Reproduce--- Run the following command. P.S. maxcpus is provided with a negative number. /usr/bin/qemu-system-ppc64le --nographic -vga none -machine pseries,accel=kvm,kvm-type=HV -m size=200g -device virtio-blk-pci,drive=rootdisk -drive file=/var/lib/libvirt/images/avocado-fvt-wrapper/data/avocado-vt/images/ubuntu-17.10-ppc64le.qcow2,if=none,cache=none,id=rootdisk,format=qcow2 -monitor telnet:127.0.0.1:1234,server,nowait -net nic,model=virtio -net user -device nec-usb-xhci -smp 8,cores=1,threads=1,maxcpus=-12 Userspace tool common name: /usr/bin/qemu-system-ppc64le The userspace tool has the following bit modes: 64-bit
Userspace rpm: qemu-kvm 1:2.10~rc3+dfsg-0ubuntu1 Userspace tool obtained from project website: na *Additional Instructions for nasas...@in.ibm.com: -Attach ltrace and strace of userspace application. P.S. Same issue seen on upstream with x86_64 and ppc64le architectures Please pick https://github.com/ehabkost/qemu/commit/c0dd10991903c552811d8cbe9231055b1b3a7ebd ** Affects: qemu (Ubuntu) Importance: Undecided Assignee: Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage) Status: New ** Tags: architecture-ppc64le bugnameltc-158060 severity-medium targetmilestone-inin1710 ** Tags added: architecture-ppc64le bugnameltc-158060 severity-medium targetmilestone-inin1710 ** Changed in: ubuntu Assignee: (unassigned) => Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage) ** Package changed: ubuntu => qemu (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1722495 Title: [Ubuntu17.10] qemu gets a trap when given a negative number to 'maxcpus' argument To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1722495/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
