From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:54101) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VKQb8-0007Kr-UD for qemu-devel@nongnu.org; Fri, 13 Sep 2013 06:27:40 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1VKQb3-0003lm-B8 for qemu-devel@nongnu.org; Fri, 13 Sep 2013 06:27:34 -0400 Received: from mx.ipv6.kamp.de ([2a02:248:0:51::16]:35726 helo=mx01.kamp.de) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VKQb2-0003lL-Uk for qemu-devel@nongnu.org; Fri, 13 Sep 2013 06:27:29 -0400 From: Peter Lieven Date: Fri, 13 Sep 2013 12:25:07 +0200 Message-Id: <1379067909-22984-11-git-send-email-pl@kamp.de> In-Reply-To: <1379067909-22984-1-git-send-email-pl@kamp.de> References: <1379067909-22984-1-git-send-email-pl@kamp.de> Subject: [Qemu-devel] [PATCH 10/12] block/get_block_status: avoid segfault if there is no backing_hd List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: kwolf@redhat.com, ronniesahlberg@gmail.com, Peter Lieven , stefanha@redhat.com, anthony@codemonkey.ws, pbonzini@redhat.com Signed-off-by: Peter Lieven --- block.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/block.c b/block.c index 4922fb9..cf9db62 100644 --- a/block.c +++ b/block.c @@ -3156,7 +3156,7 @@ static int64_t coroutine_fn bdrv_co_get_block_status(BlockDriverState *bs, if (!(ret & BDRV_BLOCK_DATA)) { if (bdrv_has_zero_init(bs)) { ret |= BDRV_BLOCK_ZERO; - } else { + } else if (bs->backing_hd) { BlockDriverState *bs2 = bs->backing_hd; int64_t length2 = bdrv_getlength(bs2); if (length2 >= 0 && sector_num >= (length2 >> BDRV_SECTOR_BITS)) { -- 1.7.9.5