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ksmbd: fix passing freed memory 'aux_payload_buf'

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[ Upstream commit 59d8d24f46 ]

The patch e2b76ab8b5: "ksmbd: add support for read compound" leads
to the following Smatch static checker warning:

  fs/smb/server/smb2pdu.c:6329 smb2_read()
        warn: passing freed memory 'aux_payload_buf'

It doesn't matter that we're passing a freed variable because nbytes is
zero. This patch set "aux_payload_buf = NULL" to make smatch silence.

Fixes: e2b76ab8b5 ("ksmbd: add support for read compound")
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Namjae Jeon
2023-12-19 00:34:28 +09:00
committed by Greg Kroah-Hartman
parent fbed0adfe5
commit 4a67467f11
1 changed files with 1 additions and 1 deletions
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2
fs/ksmbd/smb2pdu.c
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@@ -6314,7 +6314,7 @@ int smb2_read(struct ksmbd_work *work)
aux_payload_buf,
nbytes);
kvfree(aux_payload_buf);
aux_payload_buf = NULL;
nbytes = 0;
if (remain_bytes < 0) {
err = (int)remain_bytes;