| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.5 218/257] NFS: Fix a page leak in nfs_destroy_unlinked_subrequests() | Date | Thu, 16 Apr 2020 15:24:29 +0200 |
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From: Trond Myklebust <trond.myklebust@hammerspace.com>
commit add42de31721fa29ed77a7ce388674d69f9d31a4 upstream.
When we detach a subrequest from the list, we must also release the reference it holds to the parent.
Fixes: 5b2b5187fa85 ("NFS: Fix nfs_page_group_destroy() and nfs_lock_and_join_requests() race cases") Cc: stable@vger.kernel.org # v4.14+ Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- fs/nfs/write.c | 1 + 1 file changed, 1 insertion(+)
--- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -441,6 +441,7 @@ nfs_destroy_unlinked_subrequests(struct } subreq->wb_head = subreq; + nfs_release_request(old_head); if (test_and_clear_bit(PG_INODE_REF, &subreq->wb_flags)) { nfs_release_request(subreq);
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