--- /dev/null
+From d367cb960ce88914898cbfa43645c2e43ede9465 Mon Sep 17 00:00:00 2001
+From: Dan Carpenter <dan.carpenter@oracle.com>
+Date: Wed, 16 Sep 2020 23:18:21 +0300
+Subject: cifs: remove bogus debug code
+
+From: Dan Carpenter <dan.carpenter@oracle.com>
+
+commit d367cb960ce88914898cbfa43645c2e43ede9465 upstream.
+
+The "end" pointer is either NULL or it points to the next byte to parse.
+If there isn't a next byte then dereferencing "end" is an off-by-one out
+of bounds error. And, of course, if it's NULL that leads to an Oops.
+Printing "*end" doesn't seem very useful so let's delete this code.
+
+Also for the last debug statement, I noticed that it should be printing
+"sequence_end" instead of "end" so fix that as well.
+
+Reported-by: Dominik Maier <dmaier@sect.tu-berlin.de>
+Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
+Signed-off-by: Steve French <stfrench@microsoft.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ fs/cifs/asn1.c | 16 ++++++++--------
+ 1 file changed, 8 insertions(+), 8 deletions(-)
+
+--- a/fs/cifs/asn1.c
++++ b/fs/cifs/asn1.c
+@@ -541,8 +541,8 @@ decode_negTokenInit(unsigned char *secur
+ return 0;
+ } else if ((cls != ASN1_CTX) || (con != ASN1_CON)
+ || (tag != ASN1_EOC)) {
+- cifs_dbg(FYI, "cls = %d con = %d tag = %d end = %p (%d) exit 0\n",
+- cls, con, tag, end, *end);
++ cifs_dbg(FYI, "cls = %d con = %d tag = %d end = %p exit 0\n",
++ cls, con, tag, end);
+ return 0;
+ }
+
+@@ -552,8 +552,8 @@ decode_negTokenInit(unsigned char *secur
+ return 0;
+ } else if ((cls != ASN1_UNI) || (con != ASN1_CON)
+ || (tag != ASN1_SEQ)) {
+- cifs_dbg(FYI, "cls = %d con = %d tag = %d end = %p (%d) exit 1\n",
+- cls, con, tag, end, *end);
++ cifs_dbg(FYI, "cls = %d con = %d tag = %d end = %p exit 1\n",
++ cls, con, tag, end);
+ return 0;
+ }
+
+@@ -563,8 +563,8 @@ decode_negTokenInit(unsigned char *secur
+ return 0;
+ } else if ((cls != ASN1_CTX) || (con != ASN1_CON)
+ || (tag != ASN1_EOC)) {
+- cifs_dbg(FYI, "cls = %d con = %d tag = %d end = %p (%d) exit 0\n",
+- cls, con, tag, end, *end);
++ cifs_dbg(FYI, "cls = %d con = %d tag = %d end = %p exit 0\n",
++ cls, con, tag, end);
+ return 0;
+ }
+
+@@ -575,8 +575,8 @@ decode_negTokenInit(unsigned char *secur
+ return 0;
+ } else if ((cls != ASN1_UNI) || (con != ASN1_CON)
+ || (tag != ASN1_SEQ)) {
+- cifs_dbg(FYI, "cls = %d con = %d tag = %d end = %p (%d) exit 1\n",
+- cls, con, tag, end, *end);
++ cifs_dbg(FYI, "cls = %d con = %d tag = %d sequence_end = %p exit 1\n",
++ cls, con, tag, sequence_end);
+ return 0;
+ }
+