* [Qemu-devel] [PATCH v5] linux-user: Let user specify random seed
@ 2014-10-14 15:18 Magnus Reftel
0 siblings, 0 replies; 4+ messages in thread
From: Magnus Reftel @ 2014-10-14 15:18 UTC (permalink / raw)
To: qemu-devel, riku.voipio
linux-user uses the rand function for generating the value of the AT_RANDOM elf
aux vector entry, and explicitly seeds the random number generator with the
current time. This makes it impossible to reproduce runs that use the AT_RANDOM
bytes.
This patch adds a command line option and a matching environment variable for
setting the random seed, so that the AT_RANDOM values can be predictable when
the user chooses. The default is still to seed the random number generator
with the current time.
The difference from version 4 of the patch is only the addition of the line
Reviewed-by: Eric Blake <eblake@redhat.com>
to the commit message.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [Qemu-devel] [PATCH v5] linux-user: Let user specify random seed
@ 2014-10-22 13:17 Magnus Reftel
2014-10-23 10:03 ` Riku Voipio
0 siblings, 1 reply; 4+ messages in thread
From: Magnus Reftel @ 2014-10-22 13:17 UTC (permalink / raw)
To: qemu-devel; +Cc: riku.voipio
On Tue, Oct 14, 2014 at 5:18 PM, Magnus Reftel <reftel@spotify.com> wrote:
> linux-user uses the rand function for generating the value of the AT_RANDOM elf
> aux vector entry, and explicitly seeds the random number generator with the
> current time. This makes it impossible to reproduce runs that use the AT_RANDOM
> bytes.
>
> This patch adds a command line option and a matching environment variable for
> setting the random seed, so that the AT_RANDOM values can be predictable when
> the user chooses. The default is still to seed the random number generator
> with the current time.
>
> The difference from version 4 of the patch is only the addition of the line
> Reviewed-by: Eric Blake <eblake@redhat.com>
> to the commit message.
Ping.
http://patchwork.ozlabs.org/patch/399483/
BR
Magnus Reftel
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [Qemu-devel] [PATCH v5] linux-user: Let user specify random seed
2014-10-22 13:17 [Qemu-devel] [PATCH v5] linux-user: Let user specify random seed Magnus Reftel
@ 2014-10-23 10:03 ` Riku Voipio
2014-10-28 14:40 ` Magnus Reftel
0 siblings, 1 reply; 4+ messages in thread
From: Riku Voipio @ 2014-10-23 10:03 UTC (permalink / raw)
To: Magnus Reftel; +Cc: qemu-devel
On Wed, Oct 22, 2014 at 03:17:33PM +0200, Magnus Reftel wrote:
> On Tue, Oct 14, 2014 at 5:18 PM, Magnus Reftel <reftel@spotify.com> wrote:
> > linux-user uses the rand function for generating the value of the AT_RANDOM elf
> > aux vector entry, and explicitly seeds the random number generator with the
> > current time. This makes it impossible to reproduce runs that use the AT_RANDOM
> > bytes.
> >
> > This patch adds a command line option and a matching environment variable for
> > setting the random seed, so that the AT_RANDOM values can be predictable when
> > the user chooses. The default is still to seed the random number generator
> > with the current time.
> >
> > The difference from version 4 of the patch is only the addition of the line
> > Reviewed-by: Eric Blake <eblake@redhat.com>
> > to the commit message.
> Ping.
> http://patchwork.ozlabs.org/patch/399483/
Applied to linux-user que, thanks
Riku
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [Qemu-devel] [PATCH v5] linux-user: Let user specify random seed
2014-10-23 10:03 ` Riku Voipio
@ 2014-10-28 14:40 ` Magnus Reftel
0 siblings, 0 replies; 4+ messages in thread
From: Magnus Reftel @ 2014-10-28 14:40 UTC (permalink / raw)
To: Riku Voipio; +Cc: qemu-devel
On Thu, Oct 23, 2014 at 12:03 PM, Riku Voipio <riku.voipio@iki.fi> wrote:
> On Wed, Oct 22, 2014 at 03:17:33PM +0200, Magnus Reftel wrote:
>> Ping.
>> http://patchwork.ozlabs.org/patch/399483/
>
> Applied to linux-user que, thanks
Thanks!
BR
Magnus Reftel
^ permalink raw reply [flat|nested] 4+ messages in thread
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