Re: CVS commit: src/tests/lib/libc/gen (address alignment)

[Paul Goyette <paul%whooppee.com@localhost>]

On Fri, 20 Apr 2012, Paul Goyette wrote:

> > XXX I would appreciate if someone could test it under a real amd64 host 
> > with an up-to-date kernel, so I can reasonably assume that the culprit is 
> > Virtual Box and not our amd64 port (my test machine being off line I cannot 
> > do it myself). Results from other arches would be a plus too.
>
> I just updated one of my machines (running a bulldozer FX-8150) to -current 
> from an hour ago (with the most up-to-date rev of psl.h) and ran atf-run on 
> the libc/gen tests.  The machine hung solid at this point:
>
>         ...
>         t_siginfo (28/32): 8 test cases
>             sigalarm: [1.006950s] Passed.
>             sigbus_adraln:
>
> and I am no longer able to telnet into the box from elsewhere.  I am not 
> physically at the machine, so I cannot tell if it has dropped into ddb.


The machine did not drop into ddb, it simply rebooted.  Unfortunately it 
did not leave a core dump behind, so I don't have much to look at just 
yet.  When I get home later today, I will try to get more info.

BTW, this occurred while running the ATF test from a non-privileged 
user, so if there's a bug lurking in these recent changes, it could be 
considered to be a security vulnerability - non-priv user should not be 
able to crash the box...

:)



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