On Fri, Aug 08, 2014 at 05:21:17PM +0200, Pino Toscano wrote:
 If pthread_cond_wait fails and the thread worker ends, make sure to
 unlock retire_mutex, which has been locked for the condition.
 
 The return value of pthread_mutex_unlock is ignored, as there's nothing
 that can be done with it at that point.
 ---
  df/parallel.c | 3 +++
  1 file changed, 3 insertions(+)
 
 diff --git a/df/parallel.c b/df/parallel.c
 index 047735e..6d2e1cf 100644
 --- a/df/parallel.c
 +++ b/df/parallel.c
 @@ -33,6 +33,8 @@
  #include <libvirt/virterror.h>
  #endif
  
 +#include "ignore-value.h"
 +
  #include "guestfs.h"
  #include "guestfs-internal-frontend.h"
  #include "options.h"
 @@ -224,6 +226,7 @@ worker_thread (void *thread_data_vp)
        if (err != 0) {
          thread_failure ("pthread_cond_wait", err);
          thread_data->r = -1;
 +        ignore_value (pthread_mutex_unlock (&retire_mutex));
          return &thread_data->r;
        }
      }
 -- 
 1.9.3 
ACK.
Rich.
-- 
Richard Jones, Virtualization Group, Red Hat 
http://people.redhat.com/~rjones
Read my programming and virtualization blog: 
http://rwmj.wordpress.com
virt-df lists disk usage of guests without needing to install any
software inside the virtual machine.  Supports Linux and Windows.
http://people.redhat.com/~rjones/virt-df/