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authorLinus Torvalds <torvalds@linux-foundation.org>2013-09-12 13:39:34 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-09-12 13:39:34 -0700
commit1d7b24ff335489dd7e864b71ba5b35eaa25b625a (patch)
treef27815967e44510a833cf0e017c2ecc004c14e8d /fs
parent68f0d9d92e5430e250f2bd2a1e7a350e880d776a (diff)
parent23c323af0375a7f63732bed0386aba5935b8de69 (diff)
downloadlinux-1d7b24ff335489dd7e864b71ba5b35eaa25b625a.tar.bz2
Merge tag 'nfs-for-3.12-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client bugfixes (part 2) from Trond Myklebust: "Bugfixes: - Fix a few credential reference leaks resulting from the SP4_MACH_CRED NFSv4.1 state protection code. - Fix the SUNRPC bloatometer footprint: convert a 256K hashtable into the intended 64 byte structure. - Fix a long standing XDR issue with FREE_STATEID - Fix a potential WARN_ON spamming issue - Fix a missing dprintk() kuid conversion New features: - Enable the NFSv4.1 state protection support for the WRITE and COMMIT operations" * tag 'nfs-for-3.12-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: SUNRPC: No, I did not intend to create a 256KiB hashtable sunrpc: Add missing kuids conversion for printing NFSv4.1: sp4_mach_cred: WARN_ON -> WARN_ON_ONCE NFSv4.1: sp4_mach_cred: no need to ref count creds NFSv4.1: fix SECINFO* use of put_rpccred NFSv4.1: sp4_mach_cred: ask for WRITE and COMMIT NFSv4.1 fix decode_free_stateid
Diffstat (limited to 'fs')
-rw-r--r--fs/nfs/nfs4_fs.h10
-rw-r--r--fs/nfs/nfs4proc.c22
-rw-r--r--fs/nfs/nfs4xdr.c17
3 files changed, 21 insertions, 28 deletions
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index f520a1113b38..28842abafab4 100644
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -279,15 +279,15 @@ _nfs4_state_protect(struct nfs_client *clp, unsigned long sp4_mode,
if (test_bit(sp4_mode, &clp->cl_sp4_flags)) {
spin_lock(&clp->cl_lock);
if (clp->cl_machine_cred != NULL)
- newcred = get_rpccred(clp->cl_machine_cred);
+ /* don't call get_rpccred on the machine cred -
+ * a reference will be held for life of clp */
+ newcred = clp->cl_machine_cred;
spin_unlock(&clp->cl_lock);
- if (msg->rpc_cred)
- put_rpccred(msg->rpc_cred);
msg->rpc_cred = newcred;
flavor = clp->cl_rpcclient->cl_auth->au_flavor;
- WARN_ON(flavor != RPC_AUTH_GSS_KRB5I &&
- flavor != RPC_AUTH_GSS_KRB5P);
+ WARN_ON_ONCE(flavor != RPC_AUTH_GSS_KRB5I &&
+ flavor != RPC_AUTH_GSS_KRB5P);
*clntp = clp->cl_rpcclient;
return true;
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 39b6cf2d1683..989bb9d3074d 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -6001,10 +6001,12 @@ static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct
.rpc_resp = &res,
};
struct rpc_clnt *clnt = NFS_SERVER(dir)->client;
+ struct rpc_cred *cred = NULL;
if (use_integrity) {
clnt = NFS_SERVER(dir)->nfs_client->cl_rpcclient;
- msg.rpc_cred = nfs4_get_clid_cred(NFS_SERVER(dir)->nfs_client);
+ cred = nfs4_get_clid_cred(NFS_SERVER(dir)->nfs_client);
+ msg.rpc_cred = cred;
}
dprintk("NFS call secinfo %s\n", name->name);
@@ -6016,8 +6018,8 @@ static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct
&res.seq_res, 0);
dprintk("NFS reply secinfo: %d\n", status);
- if (msg.rpc_cred)
- put_rpccred(msg.rpc_cred);
+ if (cred)
+ put_rpccred(cred);
return status;
}
@@ -6151,11 +6153,13 @@ static const struct nfs41_state_protection nfs4_sp4_mach_cred_request = {
},
.allow.u.words = {
[0] = 1 << (OP_CLOSE) |
- 1 << (OP_LOCKU),
+ 1 << (OP_LOCKU) |
+ 1 << (OP_COMMIT),
[1] = 1 << (OP_SECINFO - 32) |
1 << (OP_SECINFO_NO_NAME - 32) |
1 << (OP_TEST_STATEID - 32) |
- 1 << (OP_FREE_STATEID - 32)
+ 1 << (OP_FREE_STATEID - 32) |
+ 1 << (OP_WRITE - 32)
}
};
@@ -7496,11 +7500,13 @@ _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle,
.rpc_resp = &res,
};
struct rpc_clnt *clnt = server->client;
+ struct rpc_cred *cred = NULL;
int status;
if (use_integrity) {
clnt = server->nfs_client->cl_rpcclient;
- msg.rpc_cred = nfs4_get_clid_cred(server->nfs_client);
+ cred = nfs4_get_clid_cred(server->nfs_client);
+ msg.rpc_cred = cred;
}
dprintk("--> %s\n", __func__);
@@ -7508,8 +7514,8 @@ _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle,
&res.seq_res, 0);
dprintk("<-- %s status=%d\n", __func__, status);
- if (msg.rpc_cred)
- put_rpccred(msg.rpc_cred);
+ if (cred)
+ put_rpccred(cred);
return status;
}
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index fbdad9e1719f..79210d23f607 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -414,7 +414,7 @@ static int nfs4_stat_to_errno(int);
#define decode_test_stateid_maxsz (op_decode_hdr_maxsz + 2 + 1)
#define encode_free_stateid_maxsz (op_encode_hdr_maxsz + 1 + \
XDR_QUADLEN(NFS4_STATEID_SIZE))
-#define decode_free_stateid_maxsz (op_decode_hdr_maxsz + 1)
+#define decode_free_stateid_maxsz (op_decode_hdr_maxsz)
#else /* CONFIG_NFS_V4_1 */
#define encode_sequence_maxsz 0
#define decode_sequence_maxsz 0
@@ -5966,21 +5966,8 @@ out:
static int decode_free_stateid(struct xdr_stream *xdr,
struct nfs41_free_stateid_res *res)
{
- __be32 *p;
- int status;
-
- status = decode_op_hdr(xdr, OP_FREE_STATEID);
- if (status)
- return status;
-
- p = xdr_inline_decode(xdr, 4);
- if (unlikely(!p))
- goto out_overflow;
- res->status = be32_to_cpup(p++);
+ res->status = decode_op_hdr(xdr, OP_FREE_STATEID);
return res->status;
-out_overflow:
- print_overflow_msg(__func__, xdr);
- return -EIO;
}
#endif /* CONFIG_NFS_V4_1 */