>
>
> From: James Hogan [jho...@kernel.org]
> Sent: Thursday, February 8, 2018 12:55 PM
>
> Hi,
>
> On Thu, Dec 07, 2017 at 11:33:47AM +, Miodrag Dinic wrote:
> > > On Wed, Dec 06, 2017 at 05:50:52PM +, Maciej W. Rozycki wrote:
> > > > What probl
Hi,
On Thu, Dec 07, 2017 at 11:33:47AM +, Miodrag Dinic wrote:
> > On Wed, Dec 06, 2017 at 05:50:52PM +, Maciej W. Rozycki wrote:
> > > What problem are you trying to solve anyway? Is it not something that
> > > can be handled with the `execstack' utility?
> >
> > The commit message st
Hi Miodrag,
> > I presume what you
> > actually want here is for the kernel to lie & indicate to whatever part
> > of Android that performs this check that the stack is non-executable
> > even when it is really executable?
>
> Basically yes, because we do not have other options at this point.
P
December 6, 2017 7:24 PM
To: Maciej Rozycki; Aleksandar Markovic; Aleksandar Markovic
Cc: Miodrag Dinic; James Hogan; David Daney; linux-m...@linux-mips.org; Andrew
Morton; DengCheng Zhu; Ding Tianhong; Douglas Leung; Frederic Weisbecker; Goran
Ferenc; Ingo Molnar; James Cowgill; Jonathan Corbet
Hi Maciej, Aleksandar,
On Wed, Dec 06, 2017 at 05:50:52PM +, Maciej W. Rozycki wrote:
> What problem are you trying to solve anyway? Is it not something that
> can be handled with the `execstack' utility?
The commit message states that for Android "non-exec stack is required".
Is Android c
Hi Miodrag,
> When kernel is detecting the type of mapping it should apply :
>
> fs/binfmt_elf.c:
> ...
> if (elf_read_implies_exec(loc->elf_ex, executable_stack))
> current->personality |= READ_IMPLIES_EXEC;
> ...
>
> this effectively calls mips_elf_read_implies_exec() which
On 11/30/2017 05:06 AM, Miodrag Dinic wrote:
Hi James,
We do have PT_GNU_STACK flags set correctly, this feature is required to
workaround CPU revisions which do not have RIXI support.
RIXI support can be discovered programatically from CP0_Config3.RXI
(cpu_has_rixi in asm/cpu-features.h), so
;
linux-...@vger.kernel.org; linux-kernel@vger.kernel.org; Marc Zyngier; Matt
Redfearn; Mimi Zohar; Paul Burton; Paul E. McKenney; Petar Jovanovic; Raghu
Gandham; Ralf Baechle; Thomas Gleixner; Tom Saeger
Subject: RE: [PATCH v2] MIPS: Add nonxstack=on|off kernel parameter
Hi James,
> > We d
r.kernel.org; Marc Zyngier; Matt
Redfearn; Mimi Zohar; Paul Burton; Paul E. McKenney; Petar Jovanovic; Raghu
Gandham; Ralf Baechle; Thomas Gleixner; Tom Saeger
Subject: Re: [PATCH v2] MIPS: Add nonxstack=on|off kernel parameter
On Thu, Nov 30, 2017 at 09:34:15AM +, Miodrag Dinic wrote:
>
Jonathan Corbet; linux-...@vger.kernel.org;
> linux-kernel@vger.kernel.org; Marc Zyngier; Matt Redfearn; Mimi Zohar; Paul
> Burton; Paul E. McKenney; Petar Jovanovic; Raghu Gandham; Ralf Baechle;
> Thomas Gleixner; Tom Saeger
> Subject: Re: [PATCH v2] MIPS: Add nonxstack=on|off kerne
ndham; Ralf Baechle; Thomas
Gleixner; Tom Saeger
Subject: Re: [PATCH v2] MIPS: Add nonxstack=on|off kernel parameter
On 11/21/2017 05:56 AM, Aleksandar Markovic wrote:
> From: Miodrag Dinic
>
> Add a new kernel parameter to override the default behavior related
> to the decision whether t
On 11/21/2017 05:56 AM, Aleksandar Markovic wrote:
From: Miodrag Dinic
Add a new kernel parameter to override the default behavior related
to the decision whether to set up stack as non-executable in function
mips_elf_read_implies_exec().
The new parameter is used to control non executable sta
On 11/21/2017 05:56 AM, Aleksandar Markovic wrote:
> From: Miodrag Dinic
>
> Add a new kernel parameter to override the default behavior related
> to the decision whether to set up stack as non-executable in function
> mips_elf_read_implies_exec().
>
> The new parameter is used to control non ex
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