| From c30e92df30d7d5fe65262fbce5d1b7de675fe34e Mon Sep 17 00:00:00 2001 |
| From: "J. Bruce Fields" <bfields@redhat.com> |
| Date: Mon, 10 Oct 2011 17:34:31 -0400 |
| Subject: nfsd4: ignore WANT bits in open downgrade |
| |
| From: "J. Bruce Fields" <bfields@redhat.com> |
| |
| commit c30e92df30d7d5fe65262fbce5d1b7de675fe34e upstream. |
| |
| We don't use WANT bits yet--and sending them can probably trigger a |
| BUG() further down. |
| |
| Signed-off-by: J. Bruce Fields <bfields@redhat.com> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> |
| |
| --- |
| fs/nfsd/nfs4state.c | 2 ++ |
| 1 file changed, 2 insertions(+) |
| |
| --- a/fs/nfsd/nfs4state.c |
| +++ b/fs/nfsd/nfs4state.c |
| @@ -3062,6 +3062,8 @@ nfsd4_open_downgrade(struct svc_rqst *rq |
| if (!access_valid(od->od_share_access, cstate->minorversion) |
| || !deny_valid(od->od_share_deny)) |
| return nfserr_inval; |
| + /* We don't yet support WANT bits: */ |
| + od->od_share_access &= NFS4_SHARE_ACCESS_MASK; |
| |
| nfs4_lock_state(); |
| if ((status = nfs4_preprocess_seqid_op(cstate, |
