sunrpc: return error if unsupported enctype or cksumtype is encountered
Return an error from gss_import_sec_context_kerberos if the
negotiated context contains encryption or checksum types not
supported by the kernel code.
This fixes an Oops because success was assumed and later code found
no internal_ctx_id.
Signed-off-by: Kevin Coffman <kwc@citi.umich.edu>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/net/sunrpc/auth_gss/gss_krb5_mech.c b/net/sunrpc/auth_gss/gss_krb5_mech.c
index 9843eac..60c3dba 100644
--- a/net/sunrpc/auth_gss/gss_krb5_mech.c
+++ b/net/sunrpc/auth_gss/gss_krb5_mech.c
@@ -147,13 +147,17 @@
p = simple_get_bytes(p, end, &tmp, sizeof(tmp));
if (IS_ERR(p))
goto out_err_free_ctx;
- if (tmp != SGN_ALG_DES_MAC_MD5)
+ if (tmp != SGN_ALG_DES_MAC_MD5) {
+ p = ERR_PTR(-ENOSYS);
goto out_err_free_ctx;
+ }
p = simple_get_bytes(p, end, &tmp, sizeof(tmp));
if (IS_ERR(p))
goto out_err_free_ctx;
- if (tmp != SEAL_ALG_DES)
+ if (tmp != SEAL_ALG_DES) {
+ p = ERR_PTR(-ENOSYS);
goto out_err_free_ctx;
+ }
p = simple_get_bytes(p, end, &ctx->endtime, sizeof(ctx->endtime));
if (IS_ERR(p))
goto out_err_free_ctx;
diff --git a/net/sunrpc/auth_gss/gss_krb5_seal.c b/net/sunrpc/auth_gss/gss_krb5_seal.c
index 1c6eda5..dedcbd6 100644
--- a/net/sunrpc/auth_gss/gss_krb5_seal.c
+++ b/net/sunrpc/auth_gss/gss_krb5_seal.c
@@ -83,6 +83,7 @@
u32 seq_send;
dprintk("RPC: gss_krb5_seal\n");
+ BUG_ON(ctx == NULL);
now = get_seconds();