This is the mail archive of the libc-hacker@sources.redhat.com mailing list for the glibc project.

Note that libc-hacker is a closed list. You may look at the archives of this list, but subscription and posting are not open.

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]
Other format:	[Raw text]

Re: [PATCH] Fix has_holes mprotect in dl-load.c

From: Andreas Schwab <schwab at suse dot de>
To: Jakub Jelinek <jakub at redhat dot com>
Cc: Ulrich Drepper <drepper at redhat dot com>,Glibc hackers <libc-hacker at sources dot redhat dot com>
Date: Wed, 07 Jul 2004 00:41:57 +0200
Subject: Re: [PATCH] Fix has_holes mprotect in dl-load.c
References: <20040706182508.GF5191@sunsite.ms.mff.cuni.cz>

Jakub Jelinek <jakub@redhat.com> writes:

> Hi!
>
> l_text_end is not set at this point yet and even if it would,
> if first PT_LOAD segment is not executable, it would still be 0.
> Doing mprotect (0, up to few MB, PROT_NONE) is bad and
> mprotecting l->l_laddr + c->mapend is really what is needed.

See <http://sources.redhat.com/ml/libc-hacker/2004-05/msg00033.html>.

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux AG, Maxfeldstraße 5, 90409 Nürnberg, Germany
Key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."

References:
- [PATCH] Fix has_holes mprotect in dl-load.c
  - From: Jakub Jelinek

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]