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nfc: llcp: nullify llcp_sock->dev on connect() error paths 

Nullify the llcp_sock->dev on llcp_sock_connect() error paths,
symmetrically to the code llcp_sock_bind().  The non-NULL value of
llcp_sock->dev is used in a few places to check whether the socket is
still valid.

There was no particular issue observed with missing NULL assignment in
connect() error path, however a similar case - in the bind() error path
- was triggereable.  That one was fixed in commit 4ac06a1e01 ("nfc:
fix NULL ptr dereference in llcp_sock_getname() after failed connect"),
so the change here seems logical as well.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Krzysztof Kozlowski 2022-03-02 20:25:18 +01:00 committed by David S. Miller
parent ca0a53dcec
commit 13a3585b26
1 changed files with 1 additions and 0 deletions
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1
net/nfc/llcp_sock.c
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@ -764,6 +764,7 @@ static int llcp_sock_connect(struct socket *sock, struct sockaddr *_addr,
llcp_sock->local = NULL; llcp_sock->local = NULL;
put_dev: put_dev:
llcp_sock->dev = NULL;
nfc_put_device(dev); nfc_put_device(dev);
error: error: