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the product is no longer active in Red Hat Bugzilla.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.
qemu aborted after enter "q" to hmp:virtio-scsi.c:543: virtio_scsi_handle_cmd_req_prepare: Assertion `blk_get_aio_context(d->conf.blk) == s->ctx' failed
I expect this is fixed in QEMU 2.8:
commit dce8921b2baaf95974af8176406881872067adfa
Author: Fam Zheng <famz>
Date: Thu Sep 8 17:28:51 2016 +0800
iothread: Stop threads before main() quits
Right after main_loop ends, we release various things but keep iothread
alive. The latter is not prepared to the sudden change of resources.
Specifically, after bdrv_close_all(), virtio-scsi dataplane get a
surprise at the empty BlockBackend:
(gdb) bt
at /usr/src/debug/qemu-2.6.0/hw/scsi/virtio-scsi.c:543
at /usr/src/debug/qemu-2.6.0/hw/scsi/virtio-scsi.c:577
It is because the d->conf.blk->root is set to NULL, then
blk_get_aio_context() returns qemu_aio_context, whereas s->ctx is still
pointing to the iothread:
hw/scsi/virtio-scsi.c:543:
if (s->dataplane_started) {
assert(blk_get_aio_context(d->conf.blk) == s->ctx);
}
To fix this, let's stop iothreads before doing bdrv_close_all().
Cc: qemu-stable
Signed-off-by: Fam Zheng <famz>
Reviewed-by: Paolo Bonzini <pbonzini>
Message-id: 1473326931-9699-1-git-send-email-famz
Signed-off-by: Stefan Hajnoczi <stefanha>
Yes , right.
I tried with package from qemu-kvm-rhev-2.6.0-27 to qemu-kvm-rhev-2.8.0-3 which include the commit above. the issue disappear. I think this fixed the problem.
Reproduce it on:
kernel-3.10.0-514.2.2.el7.x86_64
qemu-kvm-rhev-2.6.0-22.el7
(qemu) q
qemu-kvm: /builddir/build/BUILD/qemu-2.6.0/hw/scsi/virtio-scsi.c:543: virtio_scsi_handle_cmd_req_prepare: Assertion `blk_get_aio_context(d->conf.blk) == s->ctx' failed.
Tested on:
kernel-3.10.0-514.2.2.el7.x86_64
qemu-kvm-rhev-2.8.0-4.el7, the result is passed. So verify it.
# sh test.sh
QEMU 2.8.0 monitor - type 'help' for more information
(qemu) q
# sh test.sh
QEMU 2.8.0 monitor - type 'help' for more information
(qemu) q
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, 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-2017:2392
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, 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-2017:2392
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, 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-2017:2392
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, 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-2017:2392
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, 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-2017:2392
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, 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-2017:2392
Description of problem: After guest boot up, input "q" to hmp of the guest. qemu will be aborted. Version-Release number of selected component (if applicable): qemu-kvm-rhev-2.6.0-17.el7 3.10.0-483.el7.x86_64 How reproducible: ~ 1/7 I have reproduced 4~5 times in my test. Steps to Reproduce: 1.Boot up guest 2.After guest boot up. enter "q" to hmp 3.Observe the result Actual results: qemu aborted (qemu) q qemu-kvm: /builddir/build/BUILD/qemu-2.6.0/hw/scsi/virtio-scsi.c:543: virtio_scsi_handle_cmd_req_prepare: Assertion `blk_get_aio_context(d->conf.blk) == s->ctx' failed. Program received signal SIGABRT, Aborted. Expected results: qemu quit normally Additional info: guest boot cmd: /usr/libexec/qemu-kvm \ -name 'avocado-vt-vm1' \ -sandbox off \ -nodefaults \ -vga std \ -chardev socket,id=qmp_id_qmpmonitor1,path=/tmp/monitor-qmpmonitor1-20160517-065527-hNEWQqpC,server,nowait \ -mon chardev=qmp_id_qmpmonitor1,mode=control \ -chardev socket,id=qmp_id_catch_monitor,path=/tmp/monitor-catch_monitor-20160517-065527-hNEWQqpC,server,nowait \ -mon chardev=qmp_id_catch_monitor,mode=control \ -device ich9-usb-uhci1,id=usb1,bus=pci.0,addr=03 \ -object iothread,id=iothread0 \ -device virtio-scsi-pci,id=virtio_scsi_pci0,bus=pci.0,addr=04,disable-legacy=off,disable-modern=on,iothread=iothread0 \ -drive id=drive_image1,if=none,cache=none,snapshot=on,format=qcow2,file=/home/test/RHEL-Server-7.3-64-virtio-scsi.qcow2 \ -device scsi-hd,id=image1,drive=drive_image1 \ -device virtio-net-pci,mac=9a:3b:3c:3d:3e:3f,id=idzvFbfi,netdev=idTuGYjU,bus=pci.0,addr=05,disable-legacy=off,disable-modern=on \ -netdev tap,id=idTuGYjU,vhost=on,script=/etc/qemu-ifup,downscript=/etc/qemu-ifdown \ -m 512 \ -smp 16 \ -device usb-tablet,id=usb-tablet1,bus=usb1.0,port=1 \ -vnc :0 \ -rtc base=utc,clock=host \ -boot order=cdn,once=c,menu=off,strict=off \ -no-shutdown \ -device usb-kbd \ -monitor stdio \ -enable-kvm \