The function block_job_get() may return NULL so before dereferencing the 'job' pointer in img_commit() it should be checked.
Signed-off-by: Liam Merwick <liam.merw...@oracle.com> Reviewed-by: Darren Kenny <darren.ke...@oracle.com> Reviewed-by: Mark Kanda <mark.ka...@oracle.com> --- qemu-img.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/qemu-img.c b/qemu-img.c index b12f4cd19b0a..51fe09bd08ed 100644 --- a/qemu-img.c +++ b/qemu-img.c @@ -1029,6 +1029,9 @@ static int img_commit(int argc, char **argv) } job = block_job_get("commit"); + if (job == NULL) { + goto unref_backing; + } run_block_job(job, &local_err); if (local_err) { goto unref_backing; -- 1.8.3.1