Hi,

FYI, I upgraded to Ubuntu 14.04 and the bug vanished!

Thanks


On 13 August 2014 06:17, Launchpad Bug Tracker <email address hidden>
wrote:

> [Expired for qemu-kvm (Ubuntu) because there has been no activity for 60
> days.]
>
> ** Changed in: qemu-kvm (Ubuntu)
>        Status: Incomplete => Expired
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1320144
>
> Title:
>   kvm crashes with malloc.c assertion failed and other errors
>
> Status in “qemu-kvm” package in Ubuntu:
>   Expired
>
> Bug description:
>   My Win7 VM running on KVM keeps crashing lately.
>
>   I cannot say when it started to do so but I can say that this was not
>   happening at all some weeks ago.
>
>   From the qemu-kvm log file related to this VM just after the crash I
>   have found what follows:
>
>   2014-05-16 08:37:14.597+0000: starting up
>   LC_ALL=C
> PATH=/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/sbin:/sbin:/bin
> QEMU_AUDIO_DRV=none /usr/bin/kvm -S -M pc-1.0 -cpu
> core2duo,+lahf_lm,+popcnt,+sse4.2,+sse4.1,+cx16,-monitor,-vme -enable-kvm
> -m 1024 -smp 1,sockets=1,cores=1,threads=1 -name win7-32 -uuid
> 9c5a2a97-7657-add4-2c4a-b9f1f8c076bd -nodefconfig -nodefaults -chardev
> socket,id=charmonitor,path=/var/lib/libvirt/qemu/win7-32.monitor,server,nowait
> -mon chardev=charmonitor,id=monitor,mode=control -rtc base=localtime
> -no-shutdown -drive
> file=/host/Users/ste/Desktop/KVM/win7-32.img,if=none,id=drive-ide0-0-0,format=raw
> -device
> ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0,bootindex=1
> -drive if=none,media=cdrom,id=drive-ide0-1-0,readonly=on,format=raw -device
> ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -netdev
> tap,fd=18,id=hostnet0 -device
> rtl8139,netdev=hostnet0,id=net0,mac=52:54:00:20:0b:dd,bus=pci.0,addr=0x3
> -netdev tap,fd=19,id=hostnet1 -device
> rtl8139,netdev=hostnet1,id=net1,mac=52:54:00:c7:05:c9,bus=pci.0,addr=0x6
> -chardev pty,id=charserial0 -device
> isa-serial,chardev=charserial0,id=serial0 -usb -vnc 127.0.0.1:0 -vga std
> -device intel-hda,id=sound0,bus=pci.0,addr=0x4 -device
> hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 -device
> virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5
>   char device redirected to /dev/pts/2
>   kvm: malloc.c:2451: sYSMALLOc: Assertion `(old_top == (((mbinptr)
> (((char *) &((av)->bins[((1) - 1) * 2])) - __builtin_offsetof (struct
> malloc_chunk, fd)))) && old_size == 0) || ((unsigned long) (old_size) >=
> (unsigned long)((((__builtin_offsetof (struct malloc_chunk,
> fd_nextsize))+((2 * (sizeof(size_t))) - 1)) & ~((2 * (sizeof(size_t))) -
> 1))) && ((old_top)->size & 0x1) && ((unsigned long)old_end & pagemask) ==
> 0)' failed.
>   2014-05-16 08:38:32.952+0000: shutting down
>
>   And also:
>
>   *** glibc detected *** /usr/bin/kvm: double free or corruption
>   (fasttop): 0x00007f6530001c40 ***
>
>   ProblemType: Bug
>   DistroRelease: Ubuntu 12.04
>   Package: qemu-kvm 1.0+noroms-0ubuntu14.14
>   ProcVersionSignature: Ubuntu 3.2.0-61.93-generic 3.2.55
>   Uname: Linux 3.2.0-61-generic x86_64
>   ApportVersion: 2.0.1-0ubuntu17.6
>   Architecture: amd64
>   Date: Fri May 16 10:40:47 2014
>   KvmCmdLine: Error: command ['ps', '-C', 'kvm', '-F'] failed with exit
> code 1: UID        PID  PPID  C    SZ   RSS PSR STIME TTY          TIME CMD
>   MachineType: Hewlett-Packard HP ProBook 4520s
>   MarkForUpload: True
>   ProcEnviron:
>    TERM=xterm
>    PATH=(custom, no user)
>    LANG=en_US.UTF-8
>    SHELL=/bin/bash
>   ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-61-generic
> root=UUID=D2E20BC3E20BAAB5 loop=/hostname/disks/root.disk ro quiet splash
> vt.handoff=7
>   SourcePackage: qemu-kvm
>   UpgradeStatus: No upgrade log present (probably fresh install)
>   dmi.bios.date: 08/26/2010
>   dmi.bios.vendor: Hewlett-Packard
>   dmi.bios.version: 68AZZ Ver. F.0A
>   dmi.board.name: 1411
>   dmi.board.vendor: Hewlett-Packard
>   dmi.board.version: KBC Version 57.30
>   dmi.chassis.type: 10
>   dmi.chassis.vendor: Hewlett-Packard
>   dmi.modalias:
> dmi:bvnHewlett-Packard:bvr68AZZVer.F.0A:bd08/26/2010:svnHewlett-Packard:pnHPProBook4520s:pvr:rvnHewlett-Packard:rn1411:rvrKBCVersion57.30:cvnHewlett-Packard:ct10:cvr:
>   dmi.product.name: HP ProBook 4520s
>   dmi.sys.vendor: Hewlett-Packard
>
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