[Qemu-stable] [PATCH] block-migration: Flush requests in blk_mig_cleanup

[Kevin Wolf]

When cancelling block migration, all in-flight requests of the block
migration must be completed before the data can be freed. This was
visible as failing assertions and segfaults.

Reported-by: Peter Lieven <address@hidden>
Signed-off-by: Kevin Wolf <address@hidden>
---
 block-migration.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/block-migration.c b/block-migration.c
index 7def8ab..ed93301 100644
--- a/block-migration.c
+++ b/block-migration.c
@@ -519,6 +519,8 @@ static void blk_mig_cleanup(void)
     BlkMigDevState *bmds;
     BlkMigBlock *blk;
 
+    bdrv_drain_all();
+
     set_dirty_tracking(0);
 
     while ((bmds = QSIMPLEQ_FIRST(&block_mig_state.bmds_list)) != NULL) {
-- 
1.7.6.5