nfsd4: warn on finding lockowner without stateid's
The current code assumes a one-to-one lockowner<->lock stateid correspondance. Cc: stable@vger.kernel.org Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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@ -4166,6 +4166,10 @@ static bool same_lockowner_ino(struct nfs4_lockowner *lo, struct inode *inode, c
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if (!same_owner_str(&lo->lo_owner, owner, clid))
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return false;
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if (list_empty(&lo->lo_owner.so_stateids)) {
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WARN_ON_ONCE(1);
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return false;
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}
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lst = list_first_entry(&lo->lo_owner.so_stateids,
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struct nfs4_ol_stateid, st_perstateowner);
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return lst->st_file->fi_inode == inode;
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