From: Jeff Dike <jdike@karaya.com>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: viro@math.psu.edu, torvalds@transmeta.com (Linus Torvalds),
paulus@linuxcare.com.au (Paul Mackerras),
linux-kernel@vger.kernel.org
Subject: Re: page->mapping == 0
Date: Sun, 29 Oct 2000 18:12:00 -0500 [thread overview]
Message-ID: <200010292312.SAA02001@ccure.karaya.com> (raw)
In-Reply-To: Your message of "Sun, 29 Oct 2000 20:32:00 GMT." <E13pz7a-0006JY-00@the-village.bc.nu>
alan@lxorguk.ukuu.org.uk said:
> Well the ptrace one still has mysteriously breaks usermode linux
> against it on my list here. Was that ever explained. It looked like
> the stack got corrupted which is weird.
If this is the test8 "turn off ORIG_EAX if EIP is changed" fix, it apparently
also broke a couple of other ptrace-intensive things which aren't coming to
mind (Andi Kleen noticed them).
AFAIK, it was never explained. Something would change its victim's EIP and
the victim would segfault as soon as it was continued.
Jeff
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prev parent reply other threads:[~2000-10-29 22:05 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <14841.7644.853174.666385@argo.linuxcare.com.au>
[not found] ` <Pine.LNX.4.10.10010262325440.864-100000@penguin.transmeta.com>
2000-10-29 9:38 ` page->mapping == 0 Paul Mackerras
2000-10-29 12:39 ` Daniel Phillips
2000-10-29 18:05 ` Linus Torvalds
2000-10-29 18:32 ` Alexander Viro
2000-10-29 19:12 ` Linus Torvalds
2000-10-29 19:33 ` Linus Torvalds
2000-10-30 1:57 ` Daniel Phillips
2000-10-29 20:32 ` Alan Cox
2000-10-29 20:42 ` Alexander Viro
2000-10-29 22:26 ` Jeff V. Merkey
2000-10-29 23:12 ` Jeff Dike [this message]
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