Date: Thu, 18 May 2017 16:13:23 +0200 From: Greg KH <gregkh@...uxfoundation.org> To: "Roberts, William C" <william.c.roberts@...el.com> Cc: Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>, "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. On Tue, May 16, 2017 at 09:36:37PM +0000, Roberts, William C wrote: > > > > -----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... Why not? Did I get the address wrong? > Anyways, I am glad to see this revived and I don't have any > Comments besides thanks. Acks for the patches are always appreciated :) I'll revise this in the next few weeks and send out a new series. thanks, greg k-h
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