FAILED: patch "[PATCH] ksmbd: Fix an error handling path in 'smb2_sess_setup()'" failed to apply to 5.15-stable tree

The patch below does not apply to the 5.15-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From f8fbfd85f5c95fff477a7c19f576725945891d0c Mon Sep 17 00:00:00 2001
From: Christophe JAILLET <[email protected]>
Date: Sun, 7 Nov 2021 16:22:57 +0100
Subject: [PATCH] ksmbd: Fix an error handling path in 'smb2_sess_setup()'

All the error handling paths of 'smb2_sess_setup()' end to 'out_err'.

All but the new error handling path added by the commit given in the Fixes tag below.

Fix this error handling path and branch to 'out_err' as well.

index 121f8e8c70ac..7d2e8599dc27 100644
@@ -1697,8 +1697,10 @@ int smb2_sess_setup(struct ksmbd_work *work)
 	negblob_off = le16_to_cpu(req->SecurityBufferOffset);
 	negblob_len = le16_to_cpu(req->SecurityBufferLength);
 	if (negblob_off < offsetof(struct smb2_sess_setup_req, Buffer) ||
-	    negblob_len < offsetof(struct negotiate_message, NegotiateFlags))
-		return -EINVAL;
+	    negblob_len < offsetof(struct negotiate_message, NegotiateFlags)) {
+		rc = -EINVAL;
+		goto out_err;
+	}
 
 	negblob = (struct negotiate_message *)((char *)&req->hdr.ProtocolId +
 			negblob_off);