linux-kernel - [PATCH 1/2] cifs: replace unnecessary use of list iterator variable with head

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Message-Id: <20220331215541.883746-1-jakobkoschel@gmail.com>
Date:   Thu, 31 Mar 2022 23:55:40 +0200
From:   Jakob Koschel <jakobkoschel@...il.com>
To:     Steve French <sfrench@...ba.org>
Cc:     linux-cifs@...r.kernel.org, samba-technical@...ts.samba.org,
        linux-kernel@...r.kernel.org, Mike Rapoport <rppt@...nel.org>,
        "Brian Johannesmeyer" <bjohannesmeyer@...il.com>,
        Cristiano Giuffrida <c.giuffrida@...nl>,
        "Bos, H.J." <h.j.bos@...nl>, Jakob Koschel <jakobkoschel@...il.com>
Subject: [PATCH 1/2] cifs: replace unnecessary use of list iterator variable with head

When list_for_each_entry() completes the iteration over the whole list
without breaking the loop, the iterator variable will *always* be a
bogus pointer computed based on the head element.

To avoid type confusion use the actual list head directly instead of
the last iterator value.

Signed-off-by: Jakob Koschel <jakobkoschel@...il.com>
---
 fs/cifs/smb2pdu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index 7e7909b1ae11..4ac86b77a7c9 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -3858,7 +3858,7 @@ void smb2_reconnect_server(struct work_struct *work)
 	tcon = kzalloc(sizeof(struct cifs_tcon), GFP_KERNEL);
 	if (!tcon) {
 		resched = true;
-		list_del_init(&ses->rlist);
+		list_del_init(&pserver->smb_ses_list);
 		cifs_put_smb_ses(ses);
 		goto done;
 	}

base-commit: f82da161ea75dc4db21b2499e4b1facd36dab275
-- 
2.25.1