[Qemu-devel] [Bug 1349972] Re: qcow2-refcount: qemu-io crashes on 'discard' command

[T. Huth]

Fix has been included here:
http://git.qemu.org/?p=qemu.git;a=commitdiff;h=ecbda7a22576591a84
... so I think it should be OK now to mark this ticket as fixed.

** Changed in: qemu
       Status: In Progress => Fix Released

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1349972

Title:
   qcow2-refcount: qemu-io crashes on 'discard' command

Status in QEMU:
  Fix Released

Bug description:
  qemu-io is killed by SIGIOT at the 'discard' command on the image
  having no refcount information.

  Sequence:
  1. Unpack test.img and backing_img.qed in the same directory (see the 
attached archives for images)
  2. Make a copy of test.img to copy.img (qemu-io modifies the image before 
being kill, therefore the image backup is necessary)
  3. Run the command

  qemu-io copy.img -c 'discard 2210816 2856448'

  Result: qemu-io is killed by SIGIOT with the reason:

  qemu-io: block/qcow2-refcount.c:468: update_refcount_discard:
  Assertion `d->bytes + length == new_end - new_start' failed.

  
  The image was generated by the image fuzzer.

  qemu.git HEAD: 1d80eb7a680d

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1349972/+subscriptions