Bug#336496: marked as done (kfreebsd-5: please leave page zero unmapped)
Your message dated Fri, 18 Nov 2005 13:19:41 +0100
with message-id <20051118121941.GA16737@aragorn>
and subject line rebuild of glibc-2.3.0 for kfreeBSD (packages to test)
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From: Petr Salinger <Petr.Salinger@t-systems.cz>
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Subject: kfreebsd-5: please leave page zero unmapped
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Package: kfreebsd-5
Hi.
ELF loader /lib/ld.so.1 is mapped in memory at address 0.
$ cat /proc/self/maps
00000000-00012000 r-xp 00016000 00:00 94246 /lib/ld-2.3.so
00012000-00013000 rw-p 00001000 00:00 0
08048000-0804c000 r-xp 00004000 00:00 94294 /bin/cat
0804c000-0804d000 rw-p 00002000 00:00 0
0804d000-0804e000 rwxp 00002000 00:00 0
2804c000-2804d000 rwxp 00001000 00:00 0
2804d000-28057000 r-xp 0000a000 00:00 73652 /etc/ld.so.cache
28057000-28160000 r-xp 0010e000 00:00 94249 /lib/libc-2.3.so
28160000-28164000 rwxp 0010e000 00:00 94249 /lib/libc-2.3.so
28164000-28168000 rwxp 00004000 00:00 0
bfbe0000-bfc00000 rwxp 00020000 00:00 0
Therefore reading of NULL pointers is not caught.
I don't know where is decided base adress for /lib/ld.so.1.
Thanks
Petr
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Received: (at 336496-done) by bugs.debian.org; 18 Nov 2005 12:19:02 +0000
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Date: Fri, 18 Nov 2005 13:19:41 +0100
From: Robert Millan <rmh@aybabtu.com>
To: Aurelien Jarno <aurelien@aurel32.net>
Cc: Glibc/k*BSD <glibc-bsd-devel@lists.alioth.debian.org>,
336496-done@bugs.debian.org
Subject: Re: rebuild of glibc-2.3.0 for kfreeBSD (packages to test)
Message-ID: <20051118121941.GA16737@aragorn>
References: <437BA495.2010406@aurel32.net> <Pine.LNX.4.44.0511171021120.9733-100000@enigma.t-systems.cz> <20051117133007.GB8455@aragorn> <20051118090736.GA20589@hertz.aurel32.net>
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This closes #336496, I'm CCing -done.
On Fri, Nov 18, 2005 at 10:07:36AM +0100, Aurelien Jarno wrote:
>
> Hi all,
>
> I have spent the night on the glibc packages and, thanks to Petr
> Salinger we provide me the patches, we now have new packages of the
> glibc 2.3. Tests packages are available from:
>
> http://io.debian.net/~aurel32/glibc
>
> They mainly fix problem of ET_DYN/ET_EXEC so that we could now get rid
> of the ugly patch in binutils, the fact that ld.so was mapped at
> 0x00000000, rpcgen which is now compatible with gcc-4.0, the sys_errlist
> symbol which was not available, plus some minor fixes.
>
> If you could, please test these packages. Note that you need a kernel
> 5.4 (which supports ET_DYN and ET_EXEC linker).
>
> If everything is ok, I will upload it soon.
>
> Aurelien
>
> --
> .''`. Aurelien Jarno | GPG: 1024D/F1BCDB73
> : :' : Debian developer | Electrical Engineer
> `. `' aurel32@debian.org | aurelien@aurel32.net
> `- people.debian.org/~aurel32 | www.aurel32.net
>
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--
Robert Millan
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