From: erik quanstrom <quanstro@quanstro.net>
To: 9fans@9fans.net
Subject: Re: [9fans] rb kernel issue
Date: Tue, 5 Nov 2013 14:17:09 -0500 [thread overview]
Message-ID: <c4247651917d82ac9bc32f772422171f@mikro> (raw)
In-Reply-To: <117b4d1db2043054bf1dd9a2abe7e410@gmx.de>
On Tue Nov 5 13:06:06 EST 2013, cinap_lenrek@gmx.de wrote:
> how is this possible? execing a zero byte file should fail
> header parsing, which is portable code in sysexec(). can
> you reproduce the panic?
>
> i get this on a pc:
>
> term% ./xxx
> ./xxx: exec header invalid
this is not what happened. what happened was
/sys/src/cmd/vl/v.out was a valid mips executable.
unfortuntely, vl creates/truncates (i haven't looked yet)
v.out but when the name of vl is actually v.out,
the process nukes its own text. so the next page fault in text/data
should be unfixable. this should terminate the running
process, not panic the kernel.
- erik
prev parent reply other threads:[~2013-11-05 19:17 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-05 17:43 erik quanstrom
2013-11-05 18:58 ` cinap_lenrek
2013-11-05 19:17 ` erik quanstrom [this message]
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