On Mon, Apr 29, 2013 at 09:29:52AM -0400, Vivek Goyal wrote:
> On Mon, Apr 29, 2013 at 01:57:18AM -0700, Michel Lespinasse wrote:
> > On Mon, Apr 15, 2013 at 6:27 PM, Hugh Dickins wrote:
> > > On Mon, 15 Apr 2013, Michel Lespinasse wrote:
> > >> sys_brk() passes the length as the difference of two
On Mon, Apr 29, 2013 at 01:57:18AM -0700, Michel Lespinasse wrote:
> On Mon, Apr 15, 2013 at 6:27 PM, Hugh Dickins wrote:
> > On Mon, 15 Apr 2013, Michel Lespinasse wrote:
> >> sys_brk() passes the length as the difference of two page aligned
> >> addresses, so it's fine. But vm_brk() doesn't - i
On Mon, Apr 15, 2013 at 6:27 PM, Hugh Dickins wrote:
> On Mon, 15 Apr 2013, Michel Lespinasse wrote:
>> sys_brk() passes the length as the difference of two page aligned addresses,
>> so it's fine. But vm_brk() doesn't - it calls do_brk() which page aligns the
>> length, but then vm_brk passes t
On Mon, 15 Apr 2013, Michel Lespinasse wrote:
> On Mon, Apr 15, 2013 at 2:47 PM, Hugh Dickins wrote:
> > --- 3.9-rc7/mm/mlock.c 2013-04-01 09:08:05.736012852 -0700
> > +++ linux/mm/mlock.c2013-04-15 14:20:24.454773245 -0700
> > @@ -397,8 +397,7 @@ int __mm_populate(unsigned long start, u
> >
On Mon, Apr 15, 2013 at 2:47 PM, Hugh Dickins wrote:
> --- 3.9-rc7/mm/mlock.c 2013-04-01 09:08:05.736012852 -0700
> +++ linux/mm/mlock.c2013-04-15 14:20:24.454773245 -0700
> @@ -397,8 +397,7 @@ int __mm_populate(unsigned long start, u
> long ret = 0;
>
> VM_BUG_ON(start & ~PAG
On Mon, 15 Apr 2013, Vivek Goyal wrote:
> On Mon, Apr 15, 2013 at 01:59:29PM -0400, Vivek Goyal wrote:
> > On Mon, Apr 15, 2013 at 01:34:24PM -0400, Vivek Goyal wrote:
> > > On Mon, Apr 15, 2013 at 12:35:52PM -0400, Vivek Goyal wrote:
> > >
> > > [..]
> > > > > My first guess would be that mmap_se
On Mon, Apr 15, 2013 at 01:59:29PM -0400, Vivek Goyal wrote:
> CCing akpm.
>
> Vivek
>
> On Mon, Apr 15, 2013 at 01:34:24PM -0400, Vivek Goyal wrote:
> > On Mon, Apr 15, 2013 at 12:35:52PM -0400, Vivek Goyal wrote:
> >
> > [..]
> > > > My first guess would be that mmap_sem is held during exec, s
CCing akpm.
Vivek
On Mon, Apr 15, 2013 at 01:34:24PM -0400, Vivek Goyal wrote:
> On Mon, Apr 15, 2013 at 12:35:52PM -0400, Vivek Goyal wrote:
>
> [..]
> > > My first guess would be that mmap_sem is held during exec, so you
> > > can't have __mm_populate() try holding it recursively.
> >
> > I t
On Mon, Apr 15, 2013 at 12:35:52PM -0400, Vivek Goyal wrote:
[..]
> > My first guess would be that mmap_sem is held during exec, so you
> > can't have __mm_populate() try holding it recursively.
>
> I think it is not mmap_sem as even with VM_LOCKED, we take mmap_sem
> and things are fine.
>
> S
On Fri, Apr 12, 2013 at 07:31:32PM -0700, Michel Lespinasse wrote:
> Sorry for the earlier message getting sent before I was done typing it.
>
> On Fri, Apr 12, 2013 at 11:13 AM, Vivek Goyal wrote:
> > Hi,
> >
> > I am writing some code where I lock down a process memory at exec() time.
> > My pa
Sorry for the earlier message getting sent before I was done typing it.
On Fri, Apr 12, 2013 at 11:13 AM, Vivek Goyal wrote:
> Hi,
>
> I am writing some code where I lock down a process memory at exec() time.
> My patches were working fine till 3.9-rc4 and suddendly things broke down
> in 3.9-rc5
On Fri, Apr 12, 2013 at 11:13 AM, Vivek Goyal wrote:
> Hi,
>
> I am writing some code where I lock down a process memory at exec() time.
> My patches were working fine till 3.9-rc4 and suddendly things broke down
> in 3.9-rc5.
>
> Whenever I tried to exec() a process with memory locked down, my ba
Hi,
I am writing some code where I lock down a process memory at exec() time.
My patches were working fine till 3.9-rc4 and suddendly things broke down
in 3.9-rc5.
Whenever I tried to exec() a process with memory locked down, my bash
session hangs and after a while I get following warning.
logi
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