Bug 656779
| Summary: | Core dumped when hot plug/un-plug virtio serial port to the same chardev | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 6 | Reporter: | Mike Cao <bcao> |
| Component: | qemu-kvm | Assignee: | Amit Shah <amit.shah> |
| Status: | CLOSED ERRATA | QA Contact: | Virtualization Bugs <virt-bugs> |
| Severity: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | 6.0 | CC: | amit.shah, ehabkost, juzhang, michen, mkenneth, shu, tburke, virt-maint |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | qemu-kvm-0.12.1.2-2.162.el6 | Doc Type: | Bug Fix |
| Doc Text: |
[bug triggered using invalid qemu-kvm configuration, no Errata description required]
|
Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2011-12-06 15:43:53 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: | 580953 | ||
Tried with # rpm -q qemu-kvm qemu-kvm-0.12.1.2-2.120.el6.x86_64 still hit this issue. Patch sent upstream: http://thread.gmane.org/gmane.comp.emulators.qemu/93315 Reproduced on qemu-kvm-0.12.1.2-2.160.el6.x86_64 as following steps. Reproduce Procedure: --------------------- 1. boot a guest. # /usr/libexec/qemu-kvm -enable-kvm -M rhel6.1.0 -smp 4 -m 4G -name rhel6.1-64 -uuid 3f2ea5cd-3d29-48ff-aab2-23df1b6ae213 -drive file=RHEL-Server-6.1-64-virtio.qcow2,cache=none,if=none,rerror=stop,werror=stop,id=drive-virtio-disk0,format=qcow2 -device virtio-blk-pci,drive=drive-virtio-disk0,id=device-virtio-disk0 -netdev tap,script=/etc/qemu-ifup,id=netdev0 -device virtio-net-pci,netdev=netdev0,id=device-net0 -boot order=cd,menu=on -usb -device usb-tablet,id=input0 -monitor stdio -device virtio-serial-pci,id=virtio-serial0,max_ports=16,bus=pci.0,addr=0x5 -chardev socket,id=channel1,path=/tmp/tt,server,nowait -device virtserialport,chardev=channel1,name=port1,bus=virtio-serial0.0,id=port1 -spice disable-ticketing,port=5910 2. in qemu monitor: (qemu) device_add virtserialport,chardev=channel1,name=port1,bus=virtio-serial0.0,id=port2 3.remove 2 virtio serial port (qemu)device_del port1 (qemu)device_del port2 Actual results: ---------------- After step 3, qemu-kvm: Aborted (core dumped) Verify this bug on qemu-kvm-0.12.1.2-2.180.el6.x86_64 as same steps above. Actual results: ---------------- After step 2: (qemu) device_add virtserialport,chardev=channel1,name=port1,bus=virtio-serial0.0,id=port2 Property 'virtserialport.chardev' can't take value 'channel1', it's in use Conclusion: ------------- According to result above, this bug has been fixed.
Technical note added. If any revisions are required, please edit the "Technical Notes" field
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New Contents:
[bug triggered using invalid qemu-kvm configuration, no Errata description required]
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 |
Description of problem: Version-Release number of selected component (if applicable): # uname -r 2.6.32-71.9.1.el6.x86_64 # rpm -q qemu-kvm qemu-kvm-0.12.1.2-2.113.el6_0.4.x86_64 How reproducible: 100% Steps to Reproduce: 1.Start VM with -device virtio-serial-pci,id=virtio-serial0,max_ports=16,vectors=4,bus=pci.0 -chardev socket,path=/tmp/tt,server,nowait,id=channel0 -device virtserialport,chardev=channel0,name=org.linux-kvm.port.0,bus=virtio-serial0.0,id=port0 2.hot add another virtioserialport with chardev=channel0 (qemu)device_add virtserialport,chardev=channel0,name=org.linux-kvm.port.0,bus=virtio-serial0.0,id=port1 3.remove 2 virtio serial port (qemu)device_del port0 (qemu)device_del port1 Actual results: Core dumped Expected results: step 2 should not be allowed or steps 3 should not core dump Additional info: #0 0x0000003263e329a5 in raise () from /lib64/libc.so.6 #1 0x0000003263e34185 in abort () from /lib64/libc.so.6 #2 0x0000003263e6fd5b in __libc_message () from /lib64/libc.so.6 #3 0x0000003263e75676 in malloc_printerr () from /lib64/libc.so.6 #4 0x00000000004b5e46 in qemu_chr_close (chr=0x166ef30) at qemu-char.c:2491 #5 0x0000000000575bc9 in virtconsole_exitfn (dev=<value optimized out>) at /usr/src/debug/qemu-kvm-0.12.1.2/hw/virtio-console.c:86 #6 0x0000000000422576 in virtser_port_qdev_exit (qdev=0x1744260) at /usr/src/debug/qemu-kvm-0.12.1.2/hw/virtio-serial-bus.c:722 #7 0x00000000004bd83c in qdev_free (dev=0x1744260) at /usr/src/debug/qemu-kvm-0.12.1.2/hw/qdev.c:337 #8 0x00000000004bd8c9 in qdev_simple_unplug_cb (dev=<value optimized out>) at /usr/src/debug/qemu-kvm-0.12.1.2/hw/qdev.c:305 #9 0x00000000004129c0 in monitor_call_handler (mon=<value optimized out>, cmd=0x5810d8, params=<value optimized out>) at /usr/src/debug/qemu-kvm-0.12.1.2/monitor.c:3921 #10 0x0000000000417750 in handle_user_command (mon=0x1712870, cmdline=<value optimized out>) at /usr/src/debug/qemu-kvm-0.12.1.2/monitor.c:3958 #11 0x000000000041787a in monitor_command_cb (mon=0x1712870, cmdline=<value optimized out>, opaque=<value optimized out>) at /usr/src/debug/qemu-kvm-0.12.1.2/monitor.c:4506 #12 0x000000000049e5bb in readline_handle_byte (rs=0x2b3ab50, ---Type <return> to continue, or q <return> to quit--- ch=<value optimized out>) at readline.c:369 #13 0x00000000004178ec in monitor_read (opaque=<value optimized out>, buf=0x7fffe962c030 "\r", size=1) at /usr/src/debug/qemu-kvm-0.12.1.2/monitor.c:4492 #14 0x00000000004b66ab in qemu_chr_read (opaque=0x166edb0) at qemu-char.c:154 #15 fd_chr_read (opaque=0x166edb0) at qemu-char.c:568 #16 0x000000000040b4af in main_loop_wait (timeout=1000) at /usr/src/debug/qemu-kvm-0.12.1.2/vl.c:4234 #17 0x0000000000428c2a in kvm_main_loop () at /usr/src/debug/qemu-kvm-0.12.1.2/qemu-kvm.c:2133 #18 0x000000000040e5cb in main_loop (argc=<value optimized out>, argv=<value optimized out>, envp=<value optimized out>) at /usr/src/debug/qemu-kvm-0.12.1.2/vl.c:4444 #19 main (argc=<value optimized out>, argv=<value optimized out>, envp=<value optimized out>) at /usr/src/debug/qemu-kvm-0.12.1.2/vl.c:660