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Date: Wed, 28 Dec 2016 23:56:42 -0800
From: Christoph Hellwig <hch@infradead.org>
To: Dave Jones <davej@codemonkey.org.uk>,
        Kees Cook <keescook@chromium.org>,
        Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: sg_io HARDENED_USERCOPY_PAGESPAN trace
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References: <20161228214016.leperioiukslpho4@codemonkey.org.uk>
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On Wed, Dec 28, 2016 at 04:40:16PM -0500, Dave Jones wrote:
>  sg_io+0x113/0x470

Can you resolve that to a source line using a gdb?