[Qemu-devel] [Bug 1342704] Re: error: Crash of qemu-img/qemu-io on the qcow2 image with large values in 'incompatible features' field

[Stefan Hajnoczi]

Fixed:

commit 12ac6d3db721a288c8953c5c253230aa0949a0e1
Author: Kevin Wolf <address@hidden>
Date:   Thu Jul 17 11:41:53 2014 +0200

    qcow2: Fix error path for unknown incompatible features

** Changed in: qemu
       Status: New => Fix Committed

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https://bugs.launchpad.net/bugs/1342704

Title:
  error: Crash of qemu-img/qemu-io on the qcow2 image with large values
  in 'incompatible features' field

Status in QEMU:
  Fix Committed

Bug description:
  qemu-io and qemu-img fails with an assertion (see below) at attempt to
  interact with the qcow2 image having large values in the 'incompatible
  features' header field.

     util/error.c:34: error_set: Assertion `*errp == ((void *)0)'
  failed.

  
  The backtrace file and the test image can be found in the attachment. The 
backtraces are for the next command: 

    qemu-img check -f qcow2 test_image

  
  The image was generated by the qcow2 image fuzzer.

  qemu.git head: 5a7348045091a2bc15

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