Patch "cifs: Fix smb2_set_path_size()" has been added to the 6.1-stable tree

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This is a note to let you know that I've just added the patch titled

    cifs: Fix smb2_set_path_size()

to the 6.1-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     cifs-fix-smb2_set_path_size.patch
and it can be found in the queue-6.1 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From 211baef0eabf4169ce4f73ebd917749d1a7edd74 Mon Sep 17 00:00:00 2001
From: Volker Lendecke <vl@xxxxxxxxx>
Date: Mon, 13 Mar 2023 16:09:54 +0100
Subject: cifs: Fix smb2_set_path_size()

From: Volker Lendecke <vl@xxxxxxxxx>

commit 211baef0eabf4169ce4f73ebd917749d1a7edd74 upstream.

If cifs_get_writable_path() finds a writable file, smb2_compound_op()
must use that file's FID and not the COMPOUND_FID.

Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Volker Lendecke <vl@xxxxxxxxx>
Reviewed-by: Paulo Alcantara (SUSE) <pc@xxxxxxxxxxxxx>
Signed-off-by: Steve French <stfrench@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 fs/cifs/smb2inode.c |   31 ++++++++++++++++++++++++-------
 1 file changed, 24 insertions(+), 7 deletions(-)

--- a/fs/cifs/smb2inode.c
+++ b/fs/cifs/smb2inode.c
@@ -233,15 +233,32 @@ static int smb2_compound_op(const unsign
 		size[0] = 8; /* sizeof __le64 */
 		data[0] = ptr;
 
-		rc = SMB2_set_info_init(tcon, server,
-					&rqst[num_rqst], COMPOUND_FID,
-					COMPOUND_FID, current->tgid,
-					FILE_END_OF_FILE_INFORMATION,
-					SMB2_O_INFO_FILE, 0, data, size);
+		if (cfile) {
+			rc = SMB2_set_info_init(tcon, server,
+						&rqst[num_rqst],
+						cfile->fid.persistent_fid,
+						cfile->fid.volatile_fid,
+						current->tgid,
+						FILE_END_OF_FILE_INFORMATION,
+						SMB2_O_INFO_FILE, 0,
+						data, size);
+		} else {
+			rc = SMB2_set_info_init(tcon, server,
+						&rqst[num_rqst],
+						COMPOUND_FID,
+						COMPOUND_FID,
+						current->tgid,
+						FILE_END_OF_FILE_INFORMATION,
+						SMB2_O_INFO_FILE, 0,
+						data, size);
+			if (!rc) {
+				smb2_set_next_command(tcon, &rqst[num_rqst]);
+				smb2_set_related(&rqst[num_rqst]);
+			}
+		}
 		if (rc)
 			goto finished;
-		smb2_set_next_command(tcon, &rqst[num_rqst]);
-		smb2_set_related(&rqst[num_rqst++]);
+		num_rqst++;
 		trace_smb3_set_eof_enter(xid, ses->Suid, tcon->tid, full_path);
 		break;
 	case SMB2_OP_SET_INFO:


Patches currently in stable-queue which might be from vl@xxxxxxxxx are

queue-6.1/cifs-fix-smb2_set_path_size.patch



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