ed48c59875b6 "virtio-balloon: Safely handle BALLOON_PAGE_SIZE < host page size" introduced a new temporary data structure which tracks 4kiB chunks which have been inserted into the balloon by the guest but don't yet form a full host page which we can discard.
Unfortunately, I had a thinko and allocated that structure with g_malloc0() but freed it with a plain free() rather than g_free(). This corrects the problem. Fixes: ed48c59875b6 Reported-by: Peter Maydell <peter.mayd...@linaro.org> Signed-off-by: David Gibson <da...@gibson.dropbear.id.au> --- hw/virtio/virtio-balloon.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/hw/virtio/virtio-balloon.c b/hw/virtio/virtio-balloon.c index d3f2913a85..127289ae0e 100644 --- a/hw/virtio/virtio-balloon.c +++ b/hw/virtio/virtio-balloon.c @@ -81,7 +81,7 @@ static void balloon_inflate_page(VirtIOBalloon *balloon, /* We've partially ballooned part of a host page, but now * we're trying to balloon part of a different one. Too hard, * give up on the old partial page */ - free(balloon->pbp); + g_free(balloon->pbp); balloon->pbp = NULL; } @@ -106,7 +106,7 @@ static void balloon_inflate_page(VirtIOBalloon *balloon, * has already reported them, and failing to discard a balloon * page is not fatal */ - free(balloon->pbp); + g_free(balloon->pbp); balloon->pbp = NULL; } } -- 2.20.1