From: David Gibson <david@gibson.dropbear.id.au>
Date: Sun, 8 Jan 2006 09:03:35 +0000 (-0800)
Subject: [PATCH] Fix handling of ELF segments with zero filesize
X-Git-Tag: v2.6.16-rc1~748
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dda6ebde96044e9b5f1b14588659b39b4e6c08e7;p=pandora-kernel.git

[PATCH] Fix handling of ELF segments with zero filesize

mmap() returns -EINVAL if given a zero length, and thus elf_map() in
binfmt_elf.c does likewise if it attempts to map a (page-aligned) ELF
segment with zero filesize.  Such a situation never arises with the default
linker scripts, but there's nothing inherently wrong with zero-filesize
(but non-zero memsize) ELF segments.  Custom linker scripts can generate
them, and the kernel should be able to map them; this patch makes it so.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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