From: Shyam Prasad N <sprasad@microsoft.com>
Date: Wed, 4 Aug 2021 18:37:22 +0000
Subject: [PATCH] cifs: create sd context must be a multiple of 8
Git-commit: 7d3fc01796fc895e5fcce45c994c5a8db8120a8d
References: bsc#1190317
Patch-mainline: v5.14-rc5
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@vger.kernel.org> # v5.10+
Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Acked-by: Enzo Matsumiya <ematsumiya@suse.de>
---
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 781d14e5f2af..b6d2e3591927 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -2426,7 +2426,7 @@ create_sd_buf(umode_t mode, bool set_owner, unsigned int *len)
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;
}
--
2.33.0