Commit fea6ccb6 authored by Roger Pau Monné's avatar Roger Pau Monné Committed by Luis Henriques

xen-blkback: fix leak on grant map error path

commit 61cecca8 upstream.

Fix leaking a page when a grant mapping has failed.
Signed-off-by: default avatarRoger Pau Monné <roger.pau@citrix.com>
Reported-and-Tested-by: default avatarTao Chen <boby.chen@huawei.com>
Signed-off-by: default avatarKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: default avatarLuis Henriques <luis.henriques@canonical.com>
parent 8a2a4f71
...@@ -763,6 +763,7 @@ static int xen_blkbk_map(struct xen_blkif *blkif, ...@@ -763,6 +763,7 @@ static int xen_blkbk_map(struct xen_blkif *blkif,
BUG_ON(new_map_idx >= segs_to_map); BUG_ON(new_map_idx >= segs_to_map);
if (unlikely(map[new_map_idx].status != 0)) { if (unlikely(map[new_map_idx].status != 0)) {
pr_debug(DRV_PFX "invalid buffer -- could not remap it\n"); 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; pages[seg_idx]->handle = BLKBACK_INVALID_HANDLE;
ret |= 1; ret |= 1;
goto next; goto next;
......
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