From: Johan Hovold <johan@kernel.org>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Ilia Sergachev <silia@ethz.ch>,
Karol Gugala <kgugala@antmicro.com>,
Mateusz Holenko <mholenko@antmicro.com>,
Stafford Horne <shorne@gmail.com>,
Andy Shevchenko <andy.shevchenko@gmail.com>,
linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org,
Johan Hovold <johan@kernel.org>,
stable@vger.kernel.org,
Filip Kokosinski <fkokosinski@antmicro.com>
Subject: [PATCH v2 1/3] serial: liteuart: fix use-after-free and memleak on unbind
Date: Wed, 17 Nov 2021 11:05:10 +0100 [thread overview]
Message-ID: <20211117100512.5058-2-johan@kernel.org> (raw)
In-Reply-To: <20211117100512.5058-1-johan@kernel.org>
Deregister the port when unbinding the driver to prevent it from being
used after releasing the driver data and leaking memory allocated by
serial core.
Fixes: 1da81e5562fa ("drivers/tty/serial: add LiteUART driver")
Cc: stable@vger.kernel.org # 5.11
Cc: Filip Kokosinski <fkokosinski@antmicro.com>
Cc: Mateusz Holenko <mholenko@antmicro.com>
Reviewed-by: Stafford Horne <shorne@gmail.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
---
drivers/tty/serial/liteuart.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/tty/serial/liteuart.c b/drivers/tty/serial/liteuart.c
index f075f4ff5fcf..da792d0df790 100644
--- a/drivers/tty/serial/liteuart.c
+++ b/drivers/tty/serial/liteuart.c
@@ -295,6 +295,7 @@ static int liteuart_remove(struct platform_device *pdev)
struct uart_port *port = platform_get_drvdata(pdev);
struct liteuart_port *uart = to_liteuart_port(port);
+ uart_remove_one_port(&liteuart_driver, port);
xa_erase(&liteuart_array, uart->id);
return 0;
--
2.32.0
next prev parent reply other threads:[~2021-11-17 10:05 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-17 10:05 [PATCH v2 0/3] serial: liteuart: fix driver unbind Johan Hovold
2021-11-17 10:05 ` Johan Hovold [this message]
2021-11-17 10:05 ` [PATCH v2 2/3] serial: liteuart: fix minor-number leak on probe errors Johan Hovold
2021-11-17 10:05 ` [PATCH v2 3/3] serial: liteuart: relax compile-test dependencies Johan Hovold
2021-11-17 10:42 ` [PATCH v2 0/3] serial: liteuart: fix driver unbind Andy Shevchenko
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