From a49139af77850d64d74f9ffe43cabe7aa4f19de0 Mon Sep 17 00:00:00 2001 From: Max Reitz Date: Tue, 29 Apr 2014 19:03:13 +0200 Subject: 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 Signed-off-by: Kevin Wolf --- block/qcow2-refcount.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'block') diff --git a/block/qcow2-refcount.c b/block/qcow2-refcount.c index d2cb6a8..e79895d 100644 --- a/block/qcow2-refcount.c +++ b/block/qcow2-refcount.c @@ -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++; -- cgit v1.1