This is a note to let you know that I've just added the patch titled
cifs: create sd context must be a multiple of 8
to the 5.13-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-create-sd-context-must-be-a-multiple-of-8.patch
and it can be found in the queue-5.13 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 7d3fc01796fc895e5fcce45c994c5a8db8120a8d Mon Sep 17 00:00:00 2001
From: Shyam Prasad N <sprasad@xxxxxxxxxxxxx>
Date: Wed, 4 Aug 2021 18:37:22 +0000
Subject: cifs: create sd context must be a multiple of 8
From: Shyam Prasad N <sprasad@xxxxxxxxxxxxx>
commit 7d3fc01796fc895e5fcce45c994c5a8db8120a8d upstream.
We used to follow the rule earlier that the create SD context
always be a multiple of 8. However, with the change:
cifs: refactor create_sd_buf() and and avoid corrupting the buffer
...we recompute the length, and we failed that rule.
Fixing that with this change.
Cc: <stable@xxxxxxxxxxxxxxx> # v5.10+
Signed-off-by: Shyam Prasad N <sprasad@xxxxxxxxxxxxx>
Signed-off-by: Steve French <stfrench@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/cifs/smb2pdu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -2375,7 +2375,7 @@ create_sd_buf(umode_t mode, bool set_own
memcpy(aclptr, &acl, sizeof(struct cifs_acl));
buf->ccontext.DataLength = cpu_to_le32(ptr - (__u8 *)&buf->sd);
- *len = ptr - (__u8 *)buf;
+ *len = roundup(ptr - (__u8 *)buf, 8);
return buf;
}
Patches currently in stable-queue which might be from sprasad@xxxxxxxxxxxxx are
queue-5.13/cifs-create-sd-context-must-be-a-multiple-of-8.patch
queue-5.13/cifs-call-close-synchronously-during-unlink-rename-lease-break.patch
queue-5.13/cifs-handle-race-conditions-during-rename.patch
