Date: Tue, 16 May 2017 21:36:37 +0000 From: "Roberts, William C" <william.c.roberts@...el.com> To: Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>, Greg KH <gregkh@...uxfoundation.org> CC: "kernel-hardening@...ts.openwall.com" <kernel-hardening@...ts.openwall.com>, Petr Mladek <pmladek@...e.com>, "Sergey Senozhatsky" <sergey.senozhatsky@...il.com>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, Catalin Marinas <catalin.marinas@....com>, Will Deacon <will.deacon@....com>, Steven Rostedt <rostedt@...dmis.org>, Chris Fries <cfries@...gle.com>, Dave Weinstein <olorin@...gle.com> Subject: RE: [RFC 00/06] printk: add more new kernel pointer filter options. > -----Original Message----- > From: Sergey Senozhatsky [mailto:sergey.senozhatsky.work@...il.com] > Sent: Wednesday, May 10, 2017 6:38 PM > To: Greg KH <gregkh@...uxfoundation.org> > Cc: kernel-hardening@...ts.openwall.com; Petr Mladek <pmladek@...e.com>; > Sergey Senozhatsky <sergey.senozhatsky@...il.com>; linux- > kernel@...r.kernel.org; Catalin Marinas <catalin.marinas@....com>; Will > Deacon <will.deacon@....com>; Steven Rostedt <rostedt@...dmis.org>; > Roberts, William C <william.c.roberts@...el.com>; Chris Fries > <cfries@...gle.com>; Dave Weinstein <olorin@...gle.com> > Subject: Re: [RFC 00/06] printk: add more new kernel pointer filter options. > > Hello Greg, > > On (05/05/17 21:06), Greg KH wrote: > > Here's a short patch series from Chris Fries and Dave Weinstein that > > implement some new restrictions when printing out kernel pointers, as > > well as the ability to whitelist kernel pointers where needed. > > > > These patches are based on work from William Roberts, and also is > > inspired by grsecurity's %pP to specifically whitelist a kernel > > pointer, where it is always needed, like the last patch in the series > > shows, in the UIO drivers (UIO requires that you know the address, > > it's a hardware address, nothing wrong with seeing that...) > > > > I haven't done much to this patch series, only forward porting it from > > an older kernel release (4.4) and a few minor tweaks. It applies > > cleanly on top of 4.11 as well as Linus's current development tree > > (10502 patches into the 4.12-rc1 merge window). I'm posting it now > > for comments if anyone sees anything wrong with this approach > > overall, I don't see anything wrong. > > > or thinks the things that are being whitelisted should not be? > > can't say for sure, sorry. > > -ss I almost missed this, none of the mail was delivered to my inbox... Anyways, I am glad to see this revived and I don't have any Comments besides thanks.
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