linux-kernel - Re: [PATCH 2/4] leaking_addresses: simplify path skipping

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Message-ID: <20180226020036.GE2808@eros>
Date:   Mon, 26 Feb 2018 13:00:36 +1100
From:   "Tobin C. Harding" <me@...in.cc>
To:     Tycho Andersen <tycho@...ho.ws>
Cc:     Kernel Hardening <kernel-hardening@...ts.openwall.com>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/4] leaking_addresses: simplify path skipping

On Sun, Feb 25, 2018 at 06:26:31PM -0700, Tycho Andersen wrote:
> Hi Tobin,
> 
> On Mon, Feb 19, 2018 at 01:50:47PM +1100, Tobin C. Harding wrote:
> > -# Do not parse these files under any subdirectory.
> > -my @skip_parse_files_any = ('0',
> > -			    '1',
> > -			    '2',
> > -			    'pagemap',
> > -			    'events',
> > -			    'access',
> > -			    'registers',
> > -			    'snapshot_raw',
> > -			    'trace_pipe_raw',
> > -			    'ptmx',
> > -			    'trace_pipe');
> 
> It might be worth adding 'syscall' here; the pointers listed are user
> pointers, and negative syscall args will show up like kernel pointers,
> e.g. I get this output, which is spurious:
> 
> /proc/31808/syscall: 0 0x3 0x55b107a38180 0x2000 0xffffffffffffffb0 0x55b107a302d0 0x55b107a38180 0x7fffa313b8e8 0x7ff098560d11

Nice.  Will add.

thanks,
Tobin.