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-   -   PAX: suspicious general protection fault (http://www.linux-archive.org/gentoo-hardened/11310-pax-suspicious-general-protection-fault.html)

12-03-2007 02:43 PM

PAX: suspicious general protection fault
 
On 3 Dec 2007 at 18:07, Petteri Räty wrote:

> Should this be reported somewhere or?

yes, this is a good place to start ;-). i'll need your System.map
corresponding to this kernel or a decoded oops to see what functions
were involved. also next time you could enable frame pointers and
KALLSYMS to get a better trace. you could also try a newer kernel
(if it's reproducible) as .22 isn't supported for PaX anymore.

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12-03-2007 03:15 PM

PAX: suspicious general protection fault
 
On 3 Dec 2007 at 18:47, Petteri Räty wrote:

> Well I go with whatever is marked stable and atm it's .22. Will send the
> System.map in private.

thanks for the info, the bug occured in find_get_page because
radix_tree_lookup returned '1' instead of a NULL or valid ptr.
how that is possible i have no idea, if you can reproduce the
bug then it's time to call in the real kernel devs i think ;).

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Petteri Räty 12-03-2007 03:47 PM

PAX: suspicious general protection fault
 
pageexec@freemail.hu kirjoitti:
> On 3 Dec 2007 at 18:07, Petteri Räty wrote:
>
>> Should this be reported somewhere or?
>
> yes, this is a good place to start ;-). i'll need your System.map
> corresponding to this kernel or a decoded oops to see what functions
> were involved. also next time you could enable frame pointers and
> KALLSYMS to get a better trace. you could also try a newer kernel
> (if it's reproducible) as .22 isn't supported for PaX anymore.
>

Well I go with whatever is marked stable and atm it's .22. Will send the
System.map in private.

Regards,
Petteri

Ned Ludd 12-03-2007 04:17 PM

PAX: suspicious general protection fault
 
On Mon, 2007-12-03 at 18:47 +0200, Petteri Räty wrote:
> pageexec@freemail.hu kirjoitti:
> > On 3 Dec 2007 at 18:07, Petteri Räty wrote:
> >
> >> Should this be reported somewhere or?
> >
> > yes, this is a good place to start ;-). i'll need your System.map
> > corresponding to this kernel or a decoded oops to see what functions
> > were involved. also next time you could enable frame pointers and
> > KALLSYMS to get a better trace. you could also try a newer kernel
> > (if it's reproducible) as .22 isn't supported for PaX anymore.
> >
>
> Well I go with whatever is marked stable and atm it's .22. Will send the
> System.map in private.
>
> Regards,
> Petteri


Please use =hardened-sources-2.6.23-r2

--
Ned Ludd <solar@gentoo.org>
Gentoo Linux

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Wolfram Schlich 12-04-2007 11:36 PM

PAX: suspicious general protection fault
 
* pageexec@freemail.hu <pageexec@freemail.hu> [2007-12-03 18:16]:
> On 3 Dec 2007 at 18:47, Petteri Räty wrote:
>
> > Well I go with whatever is marked stable and atm it's .22. Will send the
> > System.map in private.
>
> thanks for the info, the bug occured in find_get_page because
> radix_tree_lookup returned '1' instead of a NULL or valid ptr.
> how that is possible i have no idea, if you can reproduce the
> bug then it's time to call in the real kernel devs i think ;).

Do you remember https://bugs.gentoo.org/show_bug.cgi?id=197521 ?! :)
--
Regards,
Wolfram Schlich <wschlich@gentoo.org>
Gentoo Linux * http://dev.gentoo.org/~wschlich/
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12-05-2007 12:12 AM

PAX: suspicious general protection fault
 
On 5 Dec 2007 at 1:36, Wolfram Schlich wrote:

> * pageexec@freemail.hu <pageexec@freemail.hu> [2007-12-03 18:16]:
> > thanks for the info, the bug occured in find_get_page because
> > radix_tree_lookup returned '1' instead of a NULL or valid ptr.
> > how that is possible i have no idea, if you can reproduce the
> > bug then it's time to call in the real kernel devs i think ;).
>
> Do you remember https://bugs.gentoo.org/show_bug.cgi?id=197521 ?! :)

yes and even posted there recently, have you seen it?

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