From c2551b47c9b9465962c4000268eda1307f55614a Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Tue, 1 Dec 2015 15:16:49 +0100 Subject: qcow2: Fix potential qemu-img check crash on 32 bit hosts 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-stable@nongnu.org Reported-by: Michael S. Tsirkin Signed-off-by: Kevin Wolf Tested-by: Michael S. Tsirkin --- block/qcow2-refcount.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'block/qcow2-refcount.c') diff --git a/block/qcow2-refcount.c b/block/qcow2-refcount.c index 6e0e5bd9ae..820f412ab6 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 -- cgit v1.2.3