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qcow2: Catch bdrv_getlength() error 

The call to bdrv_getlength() from qcow2_check_refcounts() may result in
an error. Check this and abort if necessary.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Max Reitz 2014-04-29 19:03:13 +02:00 committed by Kevin Wolf
parent 521b2b5df0
commit a49139af77
1 changed files with 5 additions and 0 deletions
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5
block/qcow2-refcount.c
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@ -1487,6 +1487,11 @@ int qcow2_check_refcounts(BlockDriverState *bs, BdrvCheckResult *res,
int ret;
size = bdrv_getlength(bs->file);
if (size < 0) {
res->check_errors++;
return size;
}
nb_clusters = size_to_clusters(s, size);
if (nb_clusters > INT_MAX) {
res->check_errors++;