From 9db693f76441e2fc7e1b05dc454e7db4d3298dcb Mon Sep 17 00:00:00 2001 From: Peter Lieven Date: Fri, 22 Aug 2014 10:08:49 +0200 Subject: [PATCH] block/iscsi: fix memory corruption on iscsi resize bs->total_sectors is not yet updated at this point. resulting in memory corruption if the volume has grown and data is written to the newly availble areas. CC: qemu-stable@nongnu.org Signed-off-by: Peter Lieven Signed-off-by: Paolo Bonzini --- block/iscsi.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/block/iscsi.c b/block/iscsi.c index 2c9cfc18eb..0bde13dc75 100644 --- a/block/iscsi.c +++ b/block/iscsi.c @@ -1512,7 +1512,8 @@ static int iscsi_truncate(BlockDriverState *bs, int64_t offset) if (iscsilun->allocationmap != NULL) { g_free(iscsilun->allocationmap); iscsilun->allocationmap = - bitmap_new(DIV_ROUND_UP(bs->total_sectors, + bitmap_new(DIV_ROUND_UP(sector_lun2qemu(iscsilun->num_blocks, + iscsilun), iscsilun->cluster_sectors)); }