Bug 1141666
| Summary: | Qemu crashed if reboot guest after hot remove AC97 sound device | |||
|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Qian Guo <qiguo> | |
| Component: | qemu-kvm-rhev | Assignee: | Gerd Hoffmann <kraxel> | |
| Status: | CLOSED ERRATA | QA Contact: | Virtualization Bugs <virt-bugs> | |
| Severity: | medium | Docs Contact: | ||
| Priority: | medium | |||
| Version: | 7.1 | CC: | hhuang, juzhang, michen, virt-maint | |
| Target Milestone: | rc | |||
| Target Release: | --- | |||
| Hardware: | Unspecified | |||
| OS: | Unspecified | |||
| Whiteboard: | ||||
| Fixed In Version: | qemu-kvm-rhev-2.1.2-7.el7 | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | ||
| Clone Of: | ||||
| : | 1141667 (view as bug list) | Environment: | ||
| Last Closed: | 2015-03-05 09:55:30 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: | ||||
| Bug Depends On: | ||||
| Bug Blocks: | 1141667 | |||
(same patch as for 1141667) Fix included in qemu-kvm-rhev-2.1.2-7.el7 Reproduced this bug with qemu-kvm-rhev-2.1.0-4.el7.x86_64
Steps:
1.Boot guest with AC97
# /usr/libexec/qemu-kvm -cpu Penryn -m 4G -smp 4,sockets=1,cores=4,threads=1 -M pc -enable-kvm -device piix3-usb-uhci,id=usb -name rhel7 -nodefaults -nodefconfig -device virtio-balloon-pci,id=balloon0 -spice disable-ticketing,port=5000 -vga qxl -global PIIX4_PM.disable_s3=0 -global PIIX4_PM.disable_s4=0 -monitor stdio -drive file=/home/rhel71029/rhel711029cp1.qcow2,if=none,media=disk,format=qcow2,rerror=stop,werror=stop,aio=native,id=scsi-disk0 -device virtio-scsi-pci,id=bus2 -device scsi-hd,bus=bus2.0,drive=scsi-disk0,id=disk0 -device AC97,id=a1 -qmp unix:/tmp/q1,server,nowait
2.Hot unplug the ac97 device
{"execute":"qmp_capabilities"}
{"return": {}}
{"execute":"device_del","arguments":{"id":"a1"}}
{"return": {}}
{"timestamp": {"seconds": 1415786017, "microseconds": 449775}, "event": "DEVICE_DELETED", "data": {"device": "a1", "path": "/machine/peripheral/a1"}}
3.reboot guest
Result, coredumpd
(gdb) bt
#0 AUD_set_active_out (sw=0x4000000, on=0) at audio/audio.c:1194
#1 0x000055555576bb52 in reset_bm_regs (s=s@entry=0x5555563c0690, r=r@entry=0x5555563c0f1c)
at hw/audio/ac97.c:326
#2 0x000055555576c8cf in ac97_on_reset (opaque=0x5555563c0690) at hw/audio/ac97.c:1329
#3 0x0000555555722a0d in qemu_devices_reset () at vl.c:1830
#4 qemu_system_reset (report=report@entry=true) at vl.c:1843
#5 0x000055555561e61f in main_loop_should_exit () at vl.c:1974
#6 main_loop () at vl.c:2014
#7 main (argc=<optimized out>, argv=<optimized out>, envp=<optimized out>) at vl.c:4552
So this bug is reproduced.
Verify this bug with qemu-kvm-rhev-2.1.2-7.el7.x86_64
Steps as above
Result: after reboot, guest can work well,and ac97 is deleted successfully.
Verified with both windows7 and rhel7.1 guest.
So this bug is fixed
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. https://rhn.redhat.com/errata/RHSA-2015-0624.html |
Description of problem: Qemu crashed if reboot guest after hot remove AC97 sound device I test both rhel and windows guest(windows 7 even can not drive this AC97 sound device), and both hit such issue. Version-Release number of selected component (if applicable): qemu-kvm-rhev-2.1.0-3.el7.x86_64 3.10.0-158.el7.x86_64 How reproducible: 100% Steps to Reproduce: 1.Boot guest with AC97 sound device: # /usr/libexec/qemu-kvm -cpu Penryn -enable-kvm -m 4G -smp 4,sockets=1,cores=4,threads=1 -name test -rtc base=localtime,clock=host,driftfix=slew -k en-us -boot menu=on -spice disable-ticketing,port=5900 -vga qxl -usb -device usb-tablet -monitor stdio -drive file=/home/win7-64-sp1-virtio.qcow2,if=none,id=drive-system-disk,media=disk,format=qcow2,aio=native,werror=stop,rerror=stop -device virtio-blk-pci,drive=drive-system-disk,id=system-disk,addr=0x3 -netdev tap,vhost=on,id=hostnet0,script=/etc/qemu-ifup -device virtio-net-pci,netdev=hostnet0,id=vnet0,mac=ae:df:47:0d:87:44 -device AC97,id=a1 -qmp unix:/tmp/q1,server,nowait 2.Hot unplug the sound device {"execute":"device_del","arguments":{"id":"a1"}} {"return": {}} {"timestamp": {"seconds": 1410766965, "microseconds": 834460}, "event": "DEVICE_DELETED", "data": {"device": "a1", "path": "/machine/peripheral/a1"}} 3.Reboot guest Actual results: Qemu crashed: (gdb) #0 AUD_set_active_in (sw=0x5555563cf798, on=0) at audio/audio.c:1261 #1 0x000055555576b522 in reset_bm_regs (s=s@entry=0x55555640f940, r=r@entry=0x5555564101b4) at hw/audio/ac97.c:326 #2 0x000055555576c290 in ac97_on_reset (opaque=0x55555640f940) at hw/audio/ac97.c:1328 #3 0x00005555557223dd in qemu_devices_reset () at vl.c:1830 #4 qemu_system_reset (report=report@entry=true) at vl.c:1843 #5 0x000055555561e0df in main_loop_should_exit () at vl.c:1974 #6 main_loop () at vl.c:2014 #7 main (argc=<optimized out>, argv=<optimized out>, envp=<optimized out>) at vl.c:4552 (gdb) bt ful #0 AUD_set_active_in (sw=0x5555563cf798, on=0) at audio/audio.c:1261 nb_active = 0 s = 0x555555d1e5a0 <glob_audio_state> temp_sw = 0x74894c30468b4808 hw = 0x555555621490 <mem_add> #1 0x000055555576b522 in reset_bm_regs (s=s@entry=0x55555640f940, r=r@entry=0x5555564101b4) at hw/audio/ac97.c:326 No locals. #2 0x000055555576c290 in ac97_on_reset (opaque=0x55555640f940) at hw/audio/ac97.c:1328 s = 0x55555640f940 #3 0x00005555557223dd in qemu_devices_reset () at vl.c:1830 re = <optimized out> nre = 0x5555563fa500 #4 qemu_system_reset (report=report@entry=true) at vl.c:1843 mc = <optimized out> __func__ = "qemu_system_reset" #5 0x000055555561e0df in main_loop_should_exit () at vl.c:1974 r = <optimized out> #6 main_loop () at vl.c:2014 nonblocking = <optimized out> last_io = 1 #7 main (argc=<optimized out>, argv=<optimized out>, envp=<optimized out>) at vl.c:4552 i = <optimized out> snapshot = 0 linux_boot = 0 icount_option = 0x0 initrd_filename = 0x0 kernel_filename = 0x0 kernel_cmdline = <optimized out> boot_order = <optimized out> ds = <optimized out> cyls = 0 heads = 0 secs = 0 translation = <optimized out> ---Type <return> to continue, or q <return> to quit--- hda_opts = <optimized out> opts = <optimized out> machine_opts = <optimized out> olist = <optimized out> optind = 35 optarg = 0x7fffffffe6d8 "AC97,id=a1" loadvm = 0x0 machine_class = <optimized out> cpu_model = 0x7fffffffe4ab "Penryn" vga_model = 0x7fffffffe55e "qxl" qtest_chrdev = 0x0 qtest_log = 0x0 pid_file = 0x0 incoming = 0x0 show_vnc_port = 0 defconfig = <optimized out> userconfig = 94 log_mask = <optimized out> log_file = 0x0 mem_trace = {malloc = 0x555555720a90 <malloc_and_trace>, realloc = 0x555555720a70 <realloc_and_trace>, free = 0x555555720a60 <free_and_trace>, calloc = 0x0, try_malloc = 0x0, try_realloc = 0x0} trace_events = 0x0 trace_file = 0x0 maxram_size = 4294967296 ram_slots = 0 vmstate_dump_file = 0x0 __func__ = "main" Expected results: No crash, can reboot successfully. Additional info: