Bug 705726
| Summary: | Got segmentation fault after several times hot plug/unplug a virtio disk then reboot | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 5 | Reporter: | Qunfang Zhang <qzhang> |
| Component: | kvm | Assignee: | Alex Williamson <alex.williamson> |
| Status: | CLOSED DUPLICATE | QA Contact: | Virtualization Bugs <virt-bugs> |
| Severity: | high | Docs Contact: | |
| Priority: | medium | ||
| Version: | 5.7 | CC: | gcosta, juzhang, michen, mkenneth, virt-maint |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2011-05-18 14:54:42 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: | 580948 | ||
*** This bug has been marked as a duplicate of bug 645339 *** |
Description of problem: Hotplug then hot unplug a virtio disk to guest for several times (I did about 5 cycles) then reboot guest. Guest got segmentation fault. Version-Release number of selected component (if applicable): kernel-2.6.18-260.el5 kvm-83-232.el5 How reproducible: Always Steps to Reproduce: 1.Boot a guest: /usr/libexec/qemu-kvm -m 2048 -smp 2,sockets=2,cores=1,threads=1 -name rhel5.7-64 -uuid b438cbb7-9252-4333-88c0-a3aef16e4505 -no-kvm-pit-reinjection -boot c -drive file=boot.iso,if=ide,media=cdrom,bus=1,unit=0,readonly=on,format=raw -drive file=rhel5.7-64-virtio.qcow2,if=virtio,boot=on,format=qcow2 -net nic,macaddr=00:12:00:61:b6:33,vlan=0,model=virtio -net tap,vlan=0,script=/etc/qemu-ifup -vnc :10 -k en-us -vga cirrus -balloon virtio -monitor stdio 2.Inside guest: #modprobe acpiphp 3.Hot plug a virtio disk to guest in qemu monitor: (qemu)pci_add pci_addr=auto storage file=disk31.qcow2,if=virtio 4.Check in qemu monitor about pci info: (qemu)info pci 5.Hot unplug the virtio disk: (qemu)pci_del pci_addr=0:0x6 6.Repeat ste 3~6 for about 5 times. 7. Reboot guest inside guest or system_reset in qemu monitor. Actual results: Guest got segmentation fault. Expected results: Guest should boot up successfully. Additional info: dmesg in host: qemu-kvm[14510]: segfault at 0000003ee5006b6c rip 0000000000415eae rsp 00007ffff7b474d8 error 4 (gdb) bt #0 0x0000003ee5553a68 in main_arena () from /lib64/libc.so.6 #1 0x0000000000415fb2 in virtio_reset (opaque=0xe9f910) at /usr/src/debug/kvm-83-maint-snapshot-20090205/qemu/hw/virtio.c:494 #2 0x0000000000407766 in qemu_system_reset () at /usr/src/debug/kvm-83-maint-snapshot-20090205/qemu/vl.c:3942 #3 0x00000000005011c6 in qemu_kvm_system_reset () at /usr/src/debug/kvm-83-maint-snapshot-20090205/qemu/qemu-kvm.c:369 #4 kvm_main_loop () at /usr/src/debug/kvm-83-maint-snapshot-20090205/qemu/qemu-kvm.c:604 #5 0x000000000040e757 in main_loop (argc=30, argv=0x7fffffffe778, envp=<value optimized out>) at /usr/src/debug/kvm-83-maint-snapshot-20090205/qemu/vl.c:4157 #6 main (argc=30, argv=0x7fffffffe778, envp=<value optimized out>) at /usr/src/debug/kvm-83-maint-snapshot-20090205/qemu/vl.c:6559