From 3d24ff29b009931a37f8456933c59a946b4c866c Mon Sep 17 00:00:00 2001
From: ericm <ericm>
Date: Sat, 20 Aug 2005 19:08:25 +0000
Subject: [PATCH] don't let ctx obj share storage with request buffer, which
 might be released in case of recovery, request be saved and delayed handed.

---
 lustre/sec/gss/gss_internal.h |  1 +
 lustre/sec/gss/rawobj.c       |  5 +++++
 lustre/sec/gss/svcsec_gss.c   | 12 ++++++++----
 3 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/lustre/sec/gss/gss_internal.h b/lustre/sec/gss/gss_internal.h
index d1e0521..66dd290 100644
--- a/lustre/sec/gss/gss_internal.h
+++ b/lustre/sec/gss/gss_internal.h
@@ -103,6 +103,7 @@ int rawobj_equal(rawobj_t *a, rawobj_t *b);
 int rawobj_dup(rawobj_t *dest, rawobj_t *src);
 int rawobj_serialize(rawobj_t *obj, __u32 **buf, __u32 *buflen);
 int rawobj_extract(rawobj_t *obj, __u32 **buf, __u32 *buflen);
+int rawobj_extract_alloc(rawobj_t *obj, __u32 **buf, __u32 *buflen);
 int rawobj_extract_local(rawobj_t *obj, __u32 **buf, __u32 *buflen);
 
 /*
diff --git a/lustre/sec/gss/rawobj.c b/lustre/sec/gss/rawobj.c
index dba01df..104a004 100644
--- a/lustre/sec/gss/rawobj.c
+++ b/lustre/sec/gss/rawobj.c
@@ -168,6 +168,11 @@ int rawobj_extract(rawobj_t *obj, __u32 **buf, __u32 *buflen)
         return __rawobj_extract(obj, buf, buflen, 0, 0);
 }
 
+int rawobj_extract_alloc(rawobj_t *obj, __u32 **buf, __u32 *buflen)
+{
+        return __rawobj_extract(obj, buf, buflen, 1, 0);
+}
+
 int rawobj_extract_local(rawobj_t *obj, __u32 **buf, __u32 *buflen)
 {
         return __rawobj_extract(obj, buf, buflen, 0, 1);
diff --git a/lustre/sec/gss/svcsec_gss.c b/lustre/sec/gss/svcsec_gss.c
index 3087d03..03a6648 100644
--- a/lustre/sec/gss/svcsec_gss.c
+++ b/lustre/sec/gss/svcsec_gss.c
@@ -1300,7 +1300,11 @@ gss_svcsec_accept(struct ptlrpc_request *req, enum ptlrpcs_error *res)
                 GOTO(err_free, rc = SVC_DROP);
         }
 
-        if (rawobj_extract(&gc->gc_ctx, &secdata, &seclen)) {
+        /* We _must_ alloc new storage for gc_ctx. In case of recovery
+         * request will be saved to delayed handling, at that time the
+         * incoming buffer might have already been released.
+         */
+        if (rawobj_extract_alloc(&gc->gc_ctx, &secdata, &seclen)) {
                 CERROR("fail to obtain gss context handle\n");
                 GOTO(err_free, rc = SVC_DROP);
         }
@@ -1468,9 +1472,9 @@ void gss_svcsec_cleanup_req(struct ptlrpc_svcsec *svcsec,
                 return;
         }
 
-        /* gsd->clclred.gc_ctx is NOT allocated, just set pointer
-         * to the incoming packet buffer, so don't need free it
-         */
+        /* gc_ctx is allocated, see gss_svcsec_accept() */
+        rawobj_free(&gsd->clcred.gc_ctx);
+
         OBD_FREE(gsd, sizeof(*gsd));
         req->rq_svcsec_data = NULL;
         return;
-- 
1.8.3.1