[Qemu-devel] [Bug 1441775] Re: possible null pointer dereference in qemuDomainPinEmulator()

[Eric Blake]

** Project changed: qemu => libvirt

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https://bugs.launchpad.net/bugs/1441775

Title:
  possible null pointer dereference in qemuDomainPinEmulator()

Status in libvirt virtualization API:
  New

Bug description:
  In src/qemu/qemu_driver.c the qemuDomainPinEmulator() routine
  basically does this

       virDomainObjPtr vm;

       if (!(vm = qemuDomObjFromDomain(dom)))
           goto cleanup;

  cleanup:
       qemuDomObjEndAPI(&vm);

  
  If "vm" is null, then this will crash.

  The bug seems to have been added in commit 540c339a, which removed a null 
pointer check:
  -    if (vm)
  -        virObjectUnlock(vm);
  +    qemuDomObjEndAPI(&vm);

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