linux-kernel - [PATCH 2/2] cifs: Fix printing Status code into dmesg

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Message-Id: <20241227173709.22892-2-pali@kernel.org>
Date: Fri, 27 Dec 2024 18:37:09 +0100
From: Pali Rohár <pali@...nel.org>
To: Steve French <sfrench@...ba.org>,
	Paulo Alcantara <pc@...guebit.com>
Cc: linux-cifs@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] cifs: Fix printing Status code into dmesg

NT Status code is 32-bit number, so for comparing two NT Status codes is
needed to check all 32 bits, and not just low 24 bits.

Before this change kernel printed message:
"Status code returned 0x8000002d NT_STATUS_NOT_COMMITTED"

It was incorrect as because NT_STATUS_NOT_COMMITTED is defined as
0xC000002d and 0x8000002d has defined name NT_STATUS_STOPPED_ON_SYMLINK.

With this change kernel prints message:
"Status code returned 0x8000002d NT_STATUS_STOPPED_ON_SYMLINK"

Signed-off-by: Pali Rohár <pali@...nel.org>
---
 fs/smb/client/netmisc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/smb/client/netmisc.c b/fs/smb/client/netmisc.c
index 0ff3ccc7a356..4832bc9da598 100644
--- a/fs/smb/client/netmisc.c
+++ b/fs/smb/client/netmisc.c
@@ -775,10 +775,10 @@ cifs_print_status(__u32 status_code)
 	int idx = 0;
 
 	while (nt_errs[idx].nt_errstr != NULL) {
-		if (((nt_errs[idx].nt_errcode) & 0xFFFFFF) ==
-		    (status_code & 0xFFFFFF)) {
+		if (nt_errs[idx].nt_errcode == status_code) {
 			pr_notice("Status code returned 0x%08x %s\n",
 				  status_code, nt_errs[idx].nt_errstr);
+			return;
 		}
 		idx++;
 	}
-- 
2.20.1