[Qemu-devel] [PULL 23/29] block/iscsi: fix memory corruption on iscsi resize

[Kevin Wolf]

From: Peter Lieven <address@hidden>

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: address@hidden
Signed-off-by: Peter Lieven <address@hidden>
Signed-off-by: Kevin Wolf <address@hidden>
---
 block/iscsi.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/block/iscsi.c b/block/iscsi.c
index cdd19c2..3e19202 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));
     }
 
-- 
1.8.3.1