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ksmbd: Use struct_size() helper in ksmbd_negotiate_smb_dialect()

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[ Upstream commit 5211cc8727ed9701b04976ab47602955e5641bda ]

Prefer struct_size() over open-coded versions.

Link: https://github.com/KSPP/linux/issues/160
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Gustavo A. R. Silva 2023-12-31 16:12:49 +09:00 committed by Greg Kroah-Hartman
parent e7ab53bd81
commit 63fbfd212c
1 changed files with 1 additions and 1 deletions
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2
fs/smb/server/smb_common.c
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@ -266,7 +266,7 @@ static int ksmbd_negotiate_smb_dialect(void *buf)
if (smb2_neg_size > smb_buf_length)
goto err_out;
if (smb2_neg_size + le16_to_cpu(req->DialectCount) * sizeof(__le16) >
if (struct_size(req, Dialects, le16_to_cpu(req->DialectCount)) >
smb_buf_length)
goto err_out;