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[Qemu-devel] [Bug 1285505] Re: [ppa 2.0~git-20140225] SIGABRT with -virt


From: Serge Hallyn
Subject: [Qemu-devel] [Bug 1285505] Re: [ppa 2.0~git-20140225] SIGABRT with -virtfs
Date: Thu, 27 Feb 2014 17:07:05 -0000

** Also affects: qemu
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1285505

Title:
  [ppa 2.0~git-20140225] SIGABRT with -virtfs

Status in QEMU:
  New
Status in “qemu” package in Ubuntu:
  New

Bug description:
  As requested on u-devel@, I tested QEMU
  2.0~git-20140225.aa0d1f4-0ubuntu2 from ppa:ubuntu-virt/candidate. This
  has a regression with virtfs.

  I created a simple cloud-image based VM with autopkgtest:

    $ sudo apt-get install autopkgtest
    $ adt-buildvm-ubuntu-cloud

  This part works fine with the new QEMU (it already boots the cloud-
  image in qemu and runs cloud-init). But running it with a shared 9p
  directory crashes:

    $ mkdir -p /tmp/shared
    $ qemu-system-x86_64 -enable-kvm -m 1024 -nographic -virtfs 
local,id=autopkgtest,path=/tmp/shared,security_model=none,mount_tag=myshare 
-snapshot adt-trusty-amd64-cloud.img
  **
  
ERROR:/build/buildd/qemu-2.0~git-20140225.aa0d1f4/qom/object.c:331:object_initialize_with_type:
 assertion failed: (type != NULL)
  Abgebrochen (Speicherabzug geschrieben)

  It should be easy enough to reproduce and the assertion message
  already should be clear, but this is the intersting part of the
  (unretraced) stack trace:

   #2  0x00007fe3329a9195 in g_assertion_message (address@hidden, 
address@hidden "/build/buildd/qemu-2.0~git-20140225.aa0d1f4/qom/object.c", 
address@hidden, address@hidden "object_initialize_with_type", address@hidden 
"assertion failed: (type != NULL)") at 
/build/buildd/glib2.0-2.39.90/./glib/gtestutils.c:2291
           lstr = 
"331\000\377\177\000\000\320ޠF\377\177\000\000\220\026\321\066\343\177\000\000R\252\305\064\343\177\000"
           s = 0x7fe336e06e70 "pp\340\066\343\177"
   #3  0x00007fe3329a922a in g_assertion_message_expr (domain=0x0, 
file=0x7fe334c5a8e8 "/build/buildd/qemu-2.0~git-20140225.aa0d1f4/qom/object.c", 
line=331, func=0x7fe334c5ac40 "object_initialize_with_type", expr=<optimized 
out>) at /build/buildd/glib2.0-2.39.90/./glib/gtestutils.c:2306
           s = 0x7fe336e06e40 "assertion failed: (type != NULL)"

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