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Open Source and information security mailing list archives
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Date: Thu, 15 Oct 2015 16:38:20 -0700 From: Doug Anderson <dianders@...omium.org> To: John Youn <John.Youn@...opsys.com> Cc: "balbi@...com" <balbi@...com>, Yunzhi Li <lyz@...k-chips.com>, Heiko Stübner <heiko@...ech.de>, "linux-rockchip@...ts.infradead.org" <linux-rockchip@...ts.infradead.org>, Julius Werner <jwerner@...omium.org>, "gregory.herrero@...el.com" <gregory.herrero@...el.com>, "yousaf.kaukab@...el.com" <yousaf.kaukab@...el.com>, "dinguyen@...nsource.altera.com" <dinguyen@...nsource.altera.com>, "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>, "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> Subject: Re: [PATCH v2] usb: dwc2: host: Fix use after free w/ simultaneous irqs John, On Thu, Oct 15, 2015 at 4:21 PM, John Youn <John.Youn@...opsys.com> wrote: > Passing a NULL qtd to some of the subcases will lead to a NULL > pointer dereference in that function or some function that it > calls. > > I think you could just check the qtd after each call and bail if > it's not ok. I worry a little bit about ignoring an interrupt that we've already acknowledged, but if you think that's safer I can certainly change the patch. -Doug -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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