Note: This bug is displayed in read-only format because
the product is no longer active in Red Hat Bugzilla.
RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.
Description of problem:
qemu core dump with '-cpu host,mpx=off' on Cascadelake host
Version-Release number of selected component (if applicable):
Host:
kernel-4.18.0-502.el8.x86_64
qemu-kvm-6.2.0-35.module+el8.9.0+19166+e262ca96.x86_64
Model name: Intel(R) Xeon(R) Silver 4210 CPU @ 2.20GHz
How reproducible: 6/6
Steps to Reproduce:
1. Boot qemu with '-cpu host,mpx=off'
# /usr/libexec/qemu-kvm -cpu host,mpx=off
2.
3.
Actual results:
# /usr/libexec/qemu-kvm -cpu host,mpx=off
qemu-kvm: error: failed to set MSR 0x48f to 0xffefff00036dfb
qemu-kvm: ../target/i386/kvm/kvm.c:2953: kvm_buf_set_msrs: Assertion `ret == cpu->kvm_msr_buf->nmsrs' failed.
Aborted (core dumped)
Expected results:
qemu can boot up without error.
Additional info:
Didn't reproduce this issue with qemu8.0 with rhel9 kernel on Cascadelake.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory (Moderate: virt:rhel and virt-devel:rhel security, bug fix, and enhancement update), and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHSA-2023:6980
Description of problem: qemu core dump with '-cpu host,mpx=off' on Cascadelake host Version-Release number of selected component (if applicable): Host: kernel-4.18.0-502.el8.x86_64 qemu-kvm-6.2.0-35.module+el8.9.0+19166+e262ca96.x86_64 Model name: Intel(R) Xeon(R) Silver 4210 CPU @ 2.20GHz How reproducible: 6/6 Steps to Reproduce: 1. Boot qemu with '-cpu host,mpx=off' # /usr/libexec/qemu-kvm -cpu host,mpx=off 2. 3. Actual results: # /usr/libexec/qemu-kvm -cpu host,mpx=off qemu-kvm: error: failed to set MSR 0x48f to 0xffefff00036dfb qemu-kvm: ../target/i386/kvm/kvm.c:2953: kvm_buf_set_msrs: Assertion `ret == cpu->kvm_msr_buf->nmsrs' failed. Aborted (core dumped) Expected results: qemu can boot up without error. Additional info: Didn't reproduce this issue with qemu8.0 with rhel9 kernel on Cascadelake.