On Tue, Dec 01, 2015 at 03:23:45PM +0100, Kevin Wolf wrote:
> This crash was caught with qemu-iotests test case 138.
>
> Commit b6d36de already fixed a few 32 bit truncation bugs that could
> cause qemu-img check to allocate too little memory and consequently
> it would segfault. On 32 bit hosts, there is one more place that needs
> to be fixed because size_t was involved in the calculation and is a
> 32 bit type there.
>
> Cc: qemu-sta...@nongnu.org
> Reported-by: Michael S. Tsirkin <m...@redhat.com>
> Signed-off-by: Kevin Wolf <kw...@redhat.com>
Tested-by: Michael S. Tsirkin <m...@redhat.com>
> ---
> block/qcow2-refcount.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/block/qcow2-refcount.c b/block/qcow2-refcount.c
> index 6e0e5bd..820f412 100644
> --- a/block/qcow2-refcount.c
> +++ b/block/qcow2-refcount.c
> @@ -1244,7 +1244,7 @@ fail:
> /* refcount checking functions */
>
>
> -static size_t refcount_array_byte_size(BDRVQcow2State *s, uint64_t entries)
> +static uint64_t refcount_array_byte_size(BDRVQcow2State *s, uint64_t entries)
> {
> /* This assertion holds because there is no way we can address more than
> * 2^(64 - 9) clusters at once (with cluster size 512 = 2^9, and because
> --
> 1.8.3.1
