linux-kernel - Re: [PATCH] ARM: OMAP1: ams-delta: Fix possible use of uninitialized field

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Message-ID: <20181108172558.GO56134@atomide.com>
Date:   Thu, 8 Nov 2018 09:25:58 -0800
From:   Tony Lindgren <tony@...mide.com>
To:     Janusz Krzysztofik <jmkrzyszt@...il.com>
Cc:     Aaro Koskinen <aaro.koskinen@....fi>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jslaby@...e.com>,
        linux-arm-kernel@...ts.infradead.org, linux-omap@...r.kernel.org,
        linux-kernel@...r.kernel.org, stable@...r.kernel.org
Subject: Re: [PATCH] ARM: OMAP1: ams-delta: Fix possible use of uninitialized
 field

* Janusz Krzysztofik <jmkrzyszt@...il.com> [181107 13:28]:
> While playing with initialization order of modem device, it has been
> discovered that under some circumstances (early console init, I
> believe) its .pm() callback may be called before the
> uart_port->private_data pointer is initialized from
> plat_serial8250_port->private_data, resulting in NULL pointer
> dereference.  Fix it by checking for uninitialized pointer before using
> it in modem_pm().

Applying into omap-for-v4.20/fixes thanks.

Tony