From 61cecca865280bef4f8a9748d0a9afa5df351ac2 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Roger=20Pau=20Monn=C3=A9?= Date: Mon, 15 Sep 2014 11:55:27 +0200 Subject: [PATCH] xen-blkback: fix leak on grant map error path MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Fix leaking a page when a grant mapping has failed. CC: stable@vger.kernel.org Signed-off-by: Roger Pau Monné Reported-and-Tested-by: Tao Chen Signed-off-by: Konrad Rzeszutek Wilk --- drivers/block/xen-blkback/blkback.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/block/xen-blkback/blkback.c b/drivers/block/xen-blkback/blkback.c index 64c60edcdfbc..63fc7f06a014 100644 --- a/drivers/block/xen-blkback/blkback.c +++ b/drivers/block/xen-blkback/blkback.c @@ -763,6 +763,7 @@ again: BUG_ON(new_map_idx >= segs_to_map); if (unlikely(map[new_map_idx].status != 0)) { pr_debug(DRV_PFX "invalid buffer -- could not remap it\n"); + put_free_pages(blkif, &pages[seg_idx]->page, 1); pages[seg_idx]->handle = BLKBACK_INVALID_HANDLE; ret |= 1; goto next; -- 2.39.5