From: Felipe Balbi <balbi@kernel.org>
To: Nadezda Lutovinova <lutovinova@ispras.ru>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Johan Hovold <johan@kernel.org>,
linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
ldv-project@linuxtesting.org
Subject: Re: [PATCH] usb: gadget: mv_u3d: Change functon call in mv_u3d_probe()
Date: Wed, 18 Aug 2021 16:10:55 +0300 [thread overview]
Message-ID: <87mtpegak8.fsf@kernel.org> (raw)
In-Reply-To: <20210818130135.575-1-lutovinova@ispras.ru>
Hi,
(first of all, your subject could be a little more descriptive,
something like:
usb: gadget: mv_u3d: request_irq() after initializing UDC
as that would better detail what you're doing)
Nadezda Lutovinova <lutovinova@ispras.ru> writes:
> If IRQ occurs between calling request_irq() and mv_u3d_eps_init(),
> then null pointer dereference occurs since u3d->eps[] wasn't
> initialized yet but used in mv_u3d_nuke().
>
> The patch puts registration of the interrupt handler after
> initializing of neccesery data.
>
> Found by Linux Driver Verification project (linuxtesting.org).
this looks like an important bug fix, it probably deserves a stable tag
here. Which commit introduce this problem? Otherr than that, commits
looks good.
--
balbi
next prev parent reply other threads:[~2021-08-18 13:13 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-18 13:01 [PATCH] usb: gadget: mv_u3d: Change functon call in mv_u3d_probe() Nadezda Lutovinova
2021-08-18 13:10 ` Felipe Balbi [this message]
2021-08-18 14:12 ` [PATCH v2] usb: gadget: mv_u3d: request_irq() after initializing UDC Nadezda Lutovinova
2021-08-18 14:33 ` Felipe Balbi
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