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| author | Roger Pau Monné <roger.pau@citrix.com> | 2014-09-15 11:55:27 +0200 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2014-10-01 22:32:31 +0200 |
| commit | 61cecca865280bef4f8a9748d0a9afa5df351ac2 (patch) | |
| tree | eb30df0f55ab4d62026151bb068c596262094d33 /drivers | |
| parent | xen/blkback: unmap all persistent grants when frontend gets disconnected (diff) | |
| download | linux-61cecca865280bef4f8a9748d0a9afa5df351ac2.tar.xz linux-61cecca865280bef4f8a9748d0a9afa5df351ac2.zip | |
xen-blkback: fix leak on grant map error path
Fix leaking a page when a grant mapping has failed.
CC: stable@vger.kernel.org
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Reported-and-Tested-by: Tao Chen <boby.chen@huawei.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/block/xen-blkback/blkback.c | 1 |
1 files changed, 1 insertions, 0 deletions
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; |