Messages in this thread Patch in this message | | | From | Sasha Levin <> | Subject | [PATCH AUTOSEL for 4.14 058/100] nfsd: Ensure we check stateid validity in the seqid operation checks | Date | Wed, 24 Jan 2018 04:14:54 +0000 |
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From: Trond Myklebust <trond.myklebust@primarydata.com>
[ Upstream commit 9271d7e509c1bfc0b9a418caec29ec8d1ac38270 ]
After taking the stateid st_mutex, we want to know that the stateid still represents valid state before performing any non-idempotent actions.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> --- fs/nfsd/nfs4state.c | 12 +++--------- 1 file changed, 3 insertions(+), 9 deletions(-)
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index 5ec0ca5cbc1e..c927dbc8f490 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -5184,15 +5184,9 @@ static __be32 nfs4_seqid_op_checks(struct nfsd4_compound_state *cstate, stateid_ status = nfsd4_check_seqid(cstate, sop, seqid); if (status) return status; - if (stp->st_stid.sc_type == NFS4_CLOSED_STID - || stp->st_stid.sc_type == NFS4_REVOKED_DELEG_STID) - /* - * "Closed" stateid's exist *only* to return - * nfserr_replay_me from the previous step, and - * revoked delegations are kept only for free_stateid. - */ - return nfserr_bad_stateid; - mutex_lock(&stp->st_mutex); + status = nfsd4_lock_ol_stateid(stp); + if (status != nfs_ok) + return status; status = check_stateid_generation(stateid, &stp->st_stid.sc_stateid, nfsd4_has_session(cstate)); if (status == nfs_ok) status = nfs4_check_fh(current_fh, &stp->st_stid); -- 2.11.0
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