[Qemu-devel] [Bug 1355738] [NEW] qemu-img: Killed by SIGTRAP on check of the fuzzed image

[Maria Kustova]

Public bug reported:

'qemu-img check -r all' was killed by SIGTRAP.

Sequence:
 1. Unpack the attached archive, make a copy of test.img
 2. Put copy.img and backing_img.qed in the same directory
 3. Execute

qemu-img check -f qcow2 -r all copy.img

Result: qemu-img was killed by SIGTRAP with the reason:

(process:2210): GLib-ERROR **: gmem.c:140: failed to allocate
18446744069633940288 bytes

The qemu-img execution log can be found in the attached archive.

qemu.git HEAD 2d591ce2aeebf

** Affects: qemu
     Importance: Undecided
         Status: New

** Attachment added: "images.n.traces.tar.gz"
   
https://bugs.launchpad.net/bugs/1355738/+attachment/4175291/+files/images.n.traces.tar.gz

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https://bugs.launchpad.net/bugs/1355738

Title:
  qemu-img: Killed by SIGTRAP on check of the fuzzed image

Status in QEMU:
  New

Bug description:
  'qemu-img check -r all' was killed by SIGTRAP.

  Sequence:
   1. Unpack the attached archive, make a copy of test.img
   2. Put copy.img and backing_img.qed in the same directory
   3. Execute

  qemu-img check -f qcow2 -r all copy.img

  Result: qemu-img was killed by SIGTRAP with the reason:

  (process:2210): GLib-ERROR **: gmem.c:140: failed to allocate
  18446744069633940288 bytes

  The qemu-img execution log can be found in the attached archive.

  qemu.git HEAD 2d591ce2aeebf

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