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authorPeter Lieven <pl@kamp.de>2014-08-22 10:08:49 +0200
committerKevin Wolf <kwolf@redhat.com>2014-08-22 10:55:22 +0200
commitd832fb4d66ead62da4af7e44cce34cd939e865e1 (patch)
tree7e7f3fe685c5bdce7217f75552e8e69049183368
parent13b552c2f43298a42e26d7aec7b58a5c205b75a0 (diff)
downloadqemu-arm-d832fb4d66ead62da4af7e44cce34cd939e865e1.tar.gz
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 <pl@kamp.de> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
-rw-r--r--block/iscsi.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/block/iscsi.c b/block/iscsi.c
index cdd19c2bda..3e19202488 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));
}