Public bug reported: == Comment: #0 - Satheesh Rajendran <sathe...@in.ibm.com> - 2018-04-04 08:34:47 == ---Problem Description--- qemu gets crashed with cap-ibs="workaround" ---uname output--- 4.15.0-14-generic #15-Ubuntu SMP Mon Apr 2 19:47:43 UTC 2018 Machine Type = power9 boston 2.2 (pvr 004e 1202) ---Debugger--- A debugger is not configured ---Steps to Reproduce--- Boot a guest with machine capability cap-ibs=workaround, qemu-kvm crashes during guest booting.
#kvm -M pseries,cap-cfpc=workaround,cap-sbbc=workaround,cap-ibs=workaround -monitor stdio -serial /dev/pts/7 -enable-kvm -nographic -vga none /ho/sath/ubuntu-18.04-ppc64le.qcow2 QEMU 2.11.1 monitor - type 'help' for more information (qemu) (qemu) qemu-system-ppc64: /build/qemu-MNXTuJ/qemu-2.11+dfsg/hw/ppc/spapr_hcall.c:1703: h_get_cpu_characteristics: Assertion `safe_indirect_branch == SPAPR_CAP_BROKEN' failed. Aborted This upstream patch will fix the issue, https://github.com/open-power-host-os/qemu/commit/4f5b039d2bf9bb26b6e26a3dc65da36fe970cba9 Contact Information = sathe...@in.ibm.com Userspace tool common name: qemu-kvm 1:2.11+dfsg-1ubuntu5 The userspace tool has the following bit modes: both Userspace rpm: qemu-kvm 1:2.11+dfsg- 1ubuntu5 Userspace tool obtained from project website: na *Additional Instructions for sathe...@in.ibm.com: -Attach ltrace and strace of userspace application. == Comment: #3 - Satheesh Rajendran <sathe...@in.ibm.com> - 2018-04-04 08:57:22 == This commit fixes the issue: commit 4f5b039d2bf9bb26b6e26a3dc65da36fe970cba9 Author: Suraj Jitindar Singh <sjitindarsi...@gmail.com> Date: Fri Feb 16 13:33:27 2018 +1100 ppc/spapr-caps: Disallow setting workaround for spapr-cap-ibs The spapr-cap cap-ibs can only have values broken or fixed as there is no explicit workaround required. Currently setting the value workaround for this cap will hit an assert if the guest makes the hcall h_get_cpu_characteristics. Report an error when attempting to apply the setting with a more helpful error message. Reported-by: Satheesh Rajendran <sathn...@linux.vnet.ibm.com> Signed-off-by: Suraj Jitindar Singh <sjitindarsi...@gmail.com> Signed-off-by: David Gibson <da...@gibson.dropbear.id.au> ** Affects: qemu (Ubuntu) Importance: Undecided Assignee: Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage) Status: New ** Tags: architecture-ppc64le bugnameltc-166424 severity-critical targetmilestone-inin--- ** Tags added: architecture-ppc64le bugnameltc-166424 severity-critical targetmilestone-inin--- ** 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/1761371 Title: Power9: Ubuntu18.04: qemu gets crashed with cap-ibs="workaround" (kvm) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1761371/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
