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NFS: Fix a page leak in nfs_destroy_unlinked_subrequests() 

When we detach a subrequest from the list, we must also release the
reference it holds to the parent.

Fixes: 5b2b5187fa ("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>
This commit is contained in:
Trond Myklebust 2020-04-01 10:07:16 -04:00
parent f764a1e1cb
commit add42de317
1 changed files with 1 additions and 0 deletions
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fs/nfs/write.c
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@ -444,6 +444,7 @@ nfs_destroy_unlinked_subrequests(struct nfs_page *destroy_list,
} }
subreq->wb_head = subreq; subreq->wb_head = subreq;
nfs_release_request(old_head);
if (test_and_clear_bit(PG_INODE_REF, &subreq->wb_flags)) { if (test_and_clear_bit(PG_INODE_REF, &subreq->wb_flags)) {
nfs_release_request(subreq); nfs_release_request(subreq);