Bug 698537
| Summary: | ide: core dump when stop/cont guest | ||||||||||||
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| Product: | Red Hat Enterprise Linux 6 | Reporter: | Xiaoqing Wei <xwei> | ||||||||||
| Component: | qemu-kvm | Assignee: | Kevin Wolf <kwolf> | ||||||||||
| Status: | CLOSED ERRATA | QA Contact: | Virtualization Bugs <virt-bugs> | ||||||||||
| Severity: | high | Docs Contact: | |||||||||||
| Priority: | medium | ||||||||||||
| Version: | 6.1 | CC: | drjones, ehabkost, fan-wxa, gcosta, juzhang, lcapitulino, mfuruta, mkenneth, myamazak, shuang, tuhongj, virt-maint, xfu | ||||||||||
| Target Milestone: | rc | ||||||||||||
| Target Release: | --- | ||||||||||||
| Hardware: | Unspecified | ||||||||||||
| OS: | Unspecified | ||||||||||||
| Whiteboard: | |||||||||||||
| Fixed In Version: | qemu-kvm-0.12.1.2-2.172.el6 | Doc Type: | Bug Fix | ||||||||||
| Doc Text: | Story Points: | --- | |||||||||||
| Clone Of: | Environment: | ||||||||||||
| Last Closed: | 2011-12-06 15:39:55 UTC | Type: | --- | ||||||||||
| Regression: | --- | Mount Type: | --- | ||||||||||
| Documentation: | --- | CRM: | |||||||||||
| Verified Versions: | Category: | --- | |||||||||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||||||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||||||||
| Embargoed: | |||||||||||||
| Bug Depends On: | |||||||||||||
| Bug Blocks: | 658636, 703492 | ||||||||||||
| Attachments: |
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Description
Xiaoqing Wei
2011-04-21 07:42:02 UTC
Created attachment 493729 [details]
gdb bt info
qemu-kvm can core dump during vm boots,just do stop/cont in monitor
Created attachment 494035 [details]
core dump bt info when running rhel56 guest
also tested
rhel61-32 20 / 0
rhel56-32 15 / 1
Win2008r2-32 10 / 0
Win7-32 15 / 0
attached bt info collected from qemu-kvm core dump when running rhel5.6 guest.
It's trying to restart a flush that probably didn't even exist. Might be a guest that writes to the status register, which the IDE emulation abuses for its internal error status. The fix would be to stop this abuse. Note for reproducers: The important thing here is that you have some I/O on the IDE slave. It doesn't matter whether you take the primary or secondary channel, /dev/hdb and /dev/hdd both work. You don't need a disk in /dev/hda to reproduce this. *** Bug 703554 has been marked as a duplicate of this bug. *** I'm marking this a blocker to 703492, as requested by Weiguo Fan in bug 703554 comment 21. Verified on qemu-kvm-0.12.1.2-2.175.el6.x86_64 Steps to Verify: 1.run a VM with two disks,and sec disk is iscsi block device. /usr/libexec/qemu-kvm -M rhel6.1.0 -enable-kvm -m 4G -smp 2,sockets=2,cores=1,threads=1 -name rhel6 -uuid 745fe449-aac8-29f1-0c2d-5042a707263b -boot c -drive file=rhel61.qcow2,if=none,id=drive-ide0-0-0,format=qcow2,cache=none,aio=threads -device ide-drive,drive=drive-ide0-0-0,id=ide0-0-0,bootindex=1 -drive file=/dev/migrate/data1,if=none,id=drive-ide0-0-1,format=qcow2,cache=none,aio=threads -device ide-drive,drive=drive-ide0-0-1,id=ide0-0-1 -netdev tap,id=hostnet1,vhost=on,script=/etc/qemu-ifup -device rtl8139,netdev=hostnet1,mac=00:24:21:7F:B6:01,bus=pci.0,id=virtio-net-pci1 -monitor stdio -spice disable-ticketing,port=5911 2.format sec disk and mount it in guest mkfs.ext4 /dev/sdb mount /dev/sdb /mnt 3.execute dd command in mount point cd /mnt dd if=/dev/urandom of=/media/tes.img bs=1M count=300 4.stop/cont in monitor Actual Results: guest and host work well, and command execute successfully. Based on above ,this issue has been fixed. Verified on qemu-kvm-0.12.1.2-2.175.el6.x86_64 reproduce on qemu-kvm-0.12.1.2-2.160.el6.x86_64 steps to reproduce: 1. install rhel5.9 guest 2./usr/libexec/qemu-kvm -M rhel6.1.0 -enable-kvm -m 4G -smp 2,sockets=2,cores=1,threads=1 -name rhel6 -uuid 745fe449-aac8-29f1-0c2d-5042a707263b -boot dc -drive file=rhel49.qcow2,if=none,id=drive-ide0-0-0,format=qcow2,cache=none,aio=threads -device ide-drive,drive=drive-ide0-0-0,id=ide0-0-0,bootindex=1 -drive file=/dev/vg0/data2,if=none,id=drive,format=qcow2,cache=none,aio=threads -device ide-drive,drive=drive,id=ide0-0-1 -netdev tap,id=hostnet1,vhost=on,script=/etc/qemu-ifup -device rtl8139,netdev=hostnet1,mac=00:24:21:7F:B6:02,bus=pci.0,id=virtio-net-pci1 -monitor stdio -spice disable-ticketing,port=5911 2. format sec disk and mount it in guest mkfs.ext3 /dev/hdd 3.execute dd command in mount point cd /mnt dd if=/dev/urandom of=/media/tes.img bs=1M count=300 4.stop/cont in monitor Actual Results: on qemu-kvm-0.12.1.2-2.160.el6.x86_64 (qemu) qemu-kvm: /builddir/build/BUILD/qemu-kvm-0.12.1.2/hw/ide/internal.h:517: bmdma_active_if: Assertion `bmdma->unit != (uint8_t)-1' failed. Aborted (core dumped) on qemu-kvm-0.12.1.2-2.175.el6.x86_64 guest work well Based on above ,this issue has been fixed. *** Bug 714344 has been marked as a duplicate of this bug. *** Created attachment 520099 [details]
sosreport
Created attachment 520100 [details]
[abrt] new crash was detected
------- Comment From vahegde1.ibm.com 2011-09-27 04:13 EDT------- Verified on RHEL6.2 Alpha with RHEL5.4 64bit guest and this issue is fixed. [root@llm112 images]# uname -a Linux llm112 2.6.32-195.el6.x86_64 #1 SMP Sun Sep 4 15:32:25 EDT 2011 x86_64 x86_64 x86_64 GNU/Linux [root@llm112 images]# rpm -qa |grep qemu qemu-kvm-0.12.1.2-2.183.el6.x86_64 qemu-kvm-tools-0.12.1.2-2.183.el6.x86_64 gpxe-roms-qemu-0.9.7-6.7.el6.noarch qemu-img-0.12.1.2-2.183.el6.x86_64 [root@llm112 images]# virsh list Id Name State ---------------------------------- 2 rhel5.4-64bit running [root@llm112 images]# virsh suspend 2 Domain 2 suspended [root@llm112 images]# virsh list Id Name State ---------------------------------- 2 rhel5.4-64bit paused [root@llm112 images]# virsh resume 2 Domain 2 resumed [root@llm112 images]# virsh list Id Name State ---------------------------------- 2 rhel5.4-64bit running Thanks Vasant Dear weiguo fan, Would you please kindly verify fix on latest RHEL6.2Alpha (kernel-2.6.32-195.el6, qemu-kvm-0.12.1.2-2.183 ), if possible? Best Regards, Masaki Furuta (In reply to comment #22) Dear Furuta-san > Would you please kindly verify fix on latest RHEL6.2Alpha > (kernel-2.6.32-195.el6, qemu-kvm-0.12.1.2-2.183 ), if possible? I confirmed that this problem did not occur on RHEL6.2 Alpha(kernel-2.6.32-195.el6, qemu-kvm-0.12.1.2-2.183 ). Thanks Best Regards. 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. http://rhn.redhat.com/errata/RHSA-2011-1531.html |