On 2017-Jul-1, at 8:40 PM, Konstantin Belousov wrote:
> On Sat, Jul 01, 2017 at 07:42:11PM -0700, Mark Millard wrote:
>> powerpc64 is having programs crash with an attempt
>> to store addresses over code instead of into
>> __cleanup_info__ when fgets is used. ntpd is an
>> example. As is sshd (a
On Sat, Jul 01, 2017 at 07:42:11PM -0700, Mark Millard wrote:
> powerpc64 is having programs crash with an attempt
> to store addresses over code instead of into
> __cleanup_info__ when fgets is used. ntpd is an
> example. As is sshd (although I've looked at
> its details less).
Yes, I think you a
[I've now got a route to get information from
the old PowerMac so-called "Quad Core" despite
sshd being broken. So I add gdb output
material as evidence to go with the more
source code level analysis from before.]
On 2017-Jul-1, at 7:42 PM, Mark Millard wrote:
> [Note: this is from a amd64 -> po
[Note: this is from a amd64 -> powerpc64 cross-build based
on system clang 4 instead of gcc 4.2.1. I'm building a
gcc 4.2.1 based system currently so that I can test
a more standard configuration. But I'm one of the ones
that experiments with finding things to report for
clang targeting powerpc64 a
Even though it'd be a stupid thing to do, the
security.bsd.stack_guard_page sysctl node can be set to a negative
integer value. This will cause all applications to crash with SIGABRT.
--
Shawn Webb
Cofounder and Security Engineer
HardenedBSD
GPG Key ID: 0x6A84658F52456EEE
GPG Key Finger
On Sat, Jul 01, 2017 at 01:28:47PM -0400, Shawn Webb wrote:
> When running my Stack Clash PoC on a vanilla FreeBSD 12-CURRENT/amd64 VM
> and security.bsd.stack_guard_page is > 1:
>
> https://goo.gl/photos/vZQY4B9jKJRLrNwP7
>
> The PoC doesn't need to be run as root on vanilla FreeBSD with a defau
On Sat, Jul 1, 2017 at 2:46 PM, Guy Yur wrote:
> Hi,
>
> I tried to run armv6 /bin/sh in a chroot on an
> amd64 host using qemu-arm-static.
> It failed on invalid argument to mmap.
>
> # cp /usr/local/bin/qemu-arm-static /chroots/armv6/root/
> # chroot /chroots/armv6 /root/qemu-arm-static /bin/sh
Hi,
I tried to run armv6 /bin/sh in a chroot on an
amd64 host using qemu-arm-static.
It failed on invalid argument to mmap.
# cp /usr/local/bin/qemu-arm-static /chroots/armv6/root/
# chroot /chroots/armv6 /root/qemu-arm-static /bin/sh
/lib/libedit.so.7: mmap of entire address space failed: Invali
When running my Stack Clash PoC on a vanilla FreeBSD 12-CURRENT/amd64 VM
and security.bsd.stack_guard_page is > 1:
https://goo.gl/photos/vZQY4B9jKJRLrNwP7
The PoC doesn't need to be run as root on vanilla FreeBSD with a default
configuration.
Thanks,
--
Shawn Webb
Cofounder and Security Engine
On Tue, Jun 27, 2017 at 1:56 PM, Trond Endrestøl <
trond.endres...@fagskolen.gjovik.no> wrote:
> On Tue, 27 Jun 2017 20:28+0200, Trond Endrestøl wrote:
>
> > On Sun, 25 Jun 2017 22:05+0300, Konstantin Belousov wrote:
> >
> > > On Sun, Jun 25, 2017 at 08:51:07PM +0200, Trond Endrest?l wrote:
> > >
Hi David,
On Sat, Jul 1, 2017 at 4:26 AM, David Wolfskill
wrote:
>
>
> --- kernel.full ---
> /usr/src/sys/dev/advansys/adwcam.c:302: undefined reference to
> `_bus_dmamap_sync'
> /usr/src/sys/dev/advansys/adwcam.c:316: undefined reference to
> `_bus_dmamap_unload'
> if_ae.o: In function `ae_alloc
On Sat, Jul 01, 2017 at 08:59:58AM -0700, Jason Harmening wrote:
> ...
> These are all functions that were removed entirely or inlined for x86 in
> r320528.
> Looks like you have stale object files hanging around, seems like make
> clean should fix it.
OK; I'll pass that along to bdrewery@, as met
On Friday 30 June 2017 22:45:39 Mark Millard wrote:
> [Just for the 3rd backtrace example. . .]
>
> Oleg V. Nauman oleg at theweb.org.ua wrote on
> Fri Jun 23 16:58:07 UTC 2017 :
>
> .. . .
>
> > __curthread () at ./machine/pcpu.h:225
> > 225 __asm("movl %%fs:%1,%0" : "=r" (td)
> > (kgdb) #
This is for a transition from r320495 --> r32053ng:
FreeBSD g1-227.catwhisker.org 12.0-CURRENT FreeBSD 12.0-CURRENT #396
r320495M/320496:1200036: Fri Jun 30 05:20:04 PDT 2017
r...@g1-227.catwhisker.org:/common/S4/obj/usr/src/sys/CANARY amd64
...
>>> World build completed on Sat Jul 1 04:
[Just for the 3rd backtrace example. . .]
Oleg V. Nauman oleg at theweb.org.ua wrote on
Fri Jun 23 16:58:07 UTC 2017 :
. . .
> __curthread () at ./machine/pcpu.h:225
> 225 __asm("movl %%fs:%1,%0" : "=r" (td)
> (kgdb) #0 __curthread () at ./machine/pcpu.h:225
> #1 doadump (textdump=-9686338
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