Bug 1655533
| Summary: | [rhel.8.0][fast train]Stopping iscsi server by iptables result in qemu aborted (core dumped) while writing data to guest | ||||||
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| Product: | Red Hat Enterprise Linux Advanced Virtualization | Reporter: | Tingting Mao <timao> | ||||
| Component: | qemu-kvm | Assignee: | John Snow <jsnow> | ||||
| Status: | CLOSED CURRENTRELEASE | QA Contact: | Tingting Mao <timao> | ||||
| Severity: | low | Docs Contact: | |||||
| Priority: | low | ||||||
| Version: | 8.0 | CC: | chayang, coli, juzhang, kanderso, knoel, mtessun, rbalakri, ribarry, timao, virt-maint | ||||
| Target Milestone: | rc | ||||||
| Target Release: | 8.0 | ||||||
| Hardware: | Unspecified | ||||||
| OS: | Unspecified | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2019-07-31 06:57:20 UTC | Type: | Bug | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
| Attachments: |
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Created attachment 1511194 [details]
gdb backtrace
Instead of REJECT I would rather use "DROP" as a rule, as typically you will not get an ICMP message here. I think this is a rarely happening usecase. (In reply to Martin Tessun from comment #3) > Instead of REJECT I would rather use "DROP" as a rule, as typically you will > not get an ICMP message here. I think this is a rarely happening usecase. That' okay to me. And I did not hit the issue either in the latest qemu version(qemu-kvm-3.1.0-2.module+el8+2606+2c716ad7), thanks. Tested this issue with the latest qemu package, not hit the issue(Tested 4 times, and all not hit the issue). So close this bug. Thanks.
Tested with:
qemu-kvm-4.0.0-6.module+el8.1.0+3736+a2aefea3
kernel-4.18.0-123.el8.x86_64
Boot scripts:
# /usr/libexec/qemu-kvm \
-name 'guest-rhel8.1.0' \
-machine q35 \
-nodefaults \
-vga qxl \
-device virtio-scsi-pci,id=virtio_scsi_pci0,bus=pcie.0,addr=0x3 \
-blockdev driver=host_device,cache.direct=off,cache.no-flush=on,filename=$1,node-name=my_file \
-blockdev driver=raw,node-name=my,file=my_file \
-device scsi-hd,drive=my,werror=stop,rerror=stop \
-vnc :0 \
-monitor stdio \
-m 4096 \
-smp 8 \
-device virtio-net-pci,mac=9a:b5:b6:b1:b2:b3,id=idMmq1jH,vectors=4,netdev=idxgXAlm,bus=pcie.0,addr=0x9 \
-netdev tap,id=idxgXAlm \
-qmp tcp:localhost:5902,server,nowait \
-chardev socket,id=qmp_id_qmpmonitor1,path=/var/tmp/timao/monitor-qmpmonitor1-20180220-094308-h9I6hRsI,server,nowait \
-mon chardev=qmp_id_qmpmonitor1,mode=control \
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Description of problem: Stopping iscsi server by iptables result in qemu aborted (core dumped) while writing data to guest. Version-Release number of selected component (if applicable): qemu-kvm-3.1.0-0.module+el8+2266+616cf026.next.candidate kernel-4.18.0-45.el8 How reproducible: 5/5 Steps to Reproduce: Create base.img file # lvcreate -L 20G -n test_base.img vg Installed and boot up image based on iscsi block disk /usr/libexec/qemu-kvm \ -name 'guest-rhel7.6' \ -machine q35 \ -nodefaults \ -vga qxl \ -device virtio-scsi-pci,id=virtio_scsi_pci0,bus=pcie.0,addr=0x3 \ -blockdev driver=host_device,cache.direct=off,cache.no-flush=on,filename=/dev/vg/test_base.img,node-name=my_file \ -blockdev driver=raw,node-name=my,file=my_file \ -device scsi-hd,drive=my \ -vnc :1 \ -monitor stdio \ -m 8192 \ -smp 8 \ -device virtio-net-pci,mac=9a:b5:b6:b1:b2:b3,id=idMmq1jH,vectors=4,netdev=idxgXAlm,bus=pcie.0,addr=0x9 \ -netdev tap,id=idxgXAlm \ -chardev socket,id=qmp_id_qmpmonitor1,path=/var/tmp/timao/monitor-qmpmonitor1-20180220-094308-h9I6hRsI,server,nowait \ -mon chardev=qmp_id_qmpmonitor1,mode=control \ -device pcie-root-port,id=pcie.0-root-port-8,slot=8,chassis=8,addr=0x8,bus=pcie.0 \ 3. ‘dd’ a big file in guest # dd if=/dev/urandom of=/home/ftest bs=1M count=10240 4. Stop data transmission from iscsi server by iptables on host while ‘dd’ in guest # iptables -A OUTPUT -j REJECT -d $iscsi_server -p tcp --dport 3260 Actual results: (qemu) qemu-kvm: hw/scsi/scsi-bus.c:1374: scsi_req_complete: Assertion `req->status == -1' failed. qemu_blockdev.sh: line 21: 22019 Aborted (core dumped) /usr/libexec/qemu-kvm -name 'guest-rhel7.6' -machine q35 -nodefaults -vga qxl -device virtio-scsi-pci,id=virtio_scsi_pci0,bus=pcie.0,addr=0x3 -blockdev driver=host_device,cache.direct=off,cache.no-flush=on,filename=$1,node-name=my_file -blockdev driver=raw,node-name=my,file=my_file -device scsi-hd,drive=my -vnc :1 -monitor stdio -m 8192 -smp 8 -device virtio-net-pci,mac=9a:b5:b6:b1:b2:b3,id=idMmq1jH,vectors=4,netdev=idxgXAlm,bus=pcie.0,addr=0x9 -netdev tap,id=idxgXAlm -chardev socket,id=qmp_id_qmpmonitor1,path=/var/tmp/timao/monitor-qmpmonitor1-20180220-094308-h9I6hRsI,server,nowait -mon chardev=qmp_id_qmpmonitor1,mode=control -device pcie-root-port,id=pcie.0-root-port-8,slot=8,chassis=8,addr=0x8,bus=pcie.0 Expected results: QEMU works normally. Additional info: There is something wrong when generating the gdb file. I will upload it tomorrow, thanks.