diff options
| author | Dai Ngo <dai.ngo@oracle.com> | 2022-01-26 13:13:38 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-02-08 18:15:29 +0100 |
| commit | 72a16cde6954dcb4cb5efeb9b48ec38831772a9a (patch) | |
| tree | 56eefaeb2c9fe899f4c36d162ea5f7bf93aed4bf | |
| parent | 3a345198a7c2d1db2526dc60b77052f75de019d3 (diff) | |
| download | linux-72a16cde6954dcb4cb5efeb9b48ec38831772a9a.tar.gz linux-72a16cde6954dcb4cb5efeb9b48ec38831772a9a.tar.bz2 linux-72a16cde6954dcb4cb5efeb9b48ec38831772a9a.zip | |
nfsd: nfsd4_setclientid_confirm mistakenly expires confirmed client.
commit ab451ea952fe9d7afefae55ddb28943a148247fe upstream.
From RFC 7530 Section 16.34.5:
o The server has not recorded an unconfirmed { v, x, c, *, * } and
has recorded a confirmed { v, x, c, *, s }. If the principals of
the record and of SETCLIENTID_CONFIRM do not match, the server
returns NFS4ERR_CLID_INUSE without removing any relevant leased
client state, and without changing recorded callback and
callback_ident values for client { x }.
The current code intends to do what the spec describes above but
it forgot to set 'old' to NULL resulting to the confirmed client
to be expired.
Fixes: 2b63482185e6 ("nfsd: fix clid_inuse on mount with security change")
Signed-off-by: Dai Ngo <dai.ngo@oracle.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Reviewed-by: Bruce Fields <bfields@fieldses.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | fs/nfsd/nfs4state.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index 524d98e3bcf5..d9381ca0ac47 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -3424,8 +3424,10 @@ nfsd4_setclientid_confirm(struct svc_rqst *rqstp, status = nfserr_clid_inuse; if (client_has_state(old) && !same_creds(&unconf->cl_cred, - &old->cl_cred)) + &old->cl_cred)) { + old = NULL; goto out; + } status = mark_client_expired_locked(old); if (status) { old = NULL; |