Red Hat Bugzilla – Bug 552152
Guest kernel panic when formatting floppy
Last modified: 2013-01-09 17:09:24 EST
Description of problem:
Guest got kernel panic with calltrace when formatting floppy.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. start vm with command
qemu-kvm -name 'vm1' -monitor tcp:0:6001,server,nowait -drive file=/tests/kvm/images/RHEL-Server-5.4-PAE-virtio.raw,if=virtio,cache=writethrough,boot=on -net nic,vlan=0,model=virtio,macaddr=00:AE:8F:CE:25:00 -net tap,vlan=0,ifname=virtio_0_6001,script=/tests/kvm/scripts/qemu-ifup-switch,downscript=no -m 4096 -smp 2 -fda /tests/kvm/images/test_floppy.img -usbdevice tablet -rtc-td-hack -no-hpet -cpu qemu64,+sse2 -no-kvm-pit-reinjection -vnc :0
2. after guest started up, login to guest and execute commands:
mkfs -t ext3 /dev/fd0
mount /dev/fd0 /mnt/ # timeout when execute this command
3. calltrace appears
guest os died with kernel panic
mount the floppy successfully
1. host kernel
# uname -r
2. this problem happens most when using
and also tested and found this on
Created attachment 381495 [details]
the calltrace screenshot
the calltrace after the command "mount"
This request was evaluated by Red Hat Product Management for
inclusion in the current release of Red Hat Enterprise Linux.
Because the affected component is not scheduled to be updated in the
current release, Red Hat is unfortunately unable to address this
request at this time. Red Hat invites you to ask your support
representative to propose this request, if appropriate and relevant,
in the next release of Red Hat Enterprise Linux.
This request was erroneously denied for the current release of
Red Hat Enterprise Linux. The error has been fixed and this
request has been re-proposed for the current release.
Created attachment 475553 [details]
rhel5.6 guest panic when testing floppy
*** This bug has been marked as a duplicate of bug 653324 ***