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| author | Richard Weinberger <richard@nod.at> | 2010-10-26 14:21:16 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-03-21 12:43:44 -0700 |
| commit | 417bcaef1160833d07668a3394d292617c25d5f5 (patch) | |
| tree | d2ef706a8b5e4395c2bf4459129255801b96583a /arch | |
| parent | 1f383de442a419719650d3ff4c0aa7542f301a92 (diff) | |
um: remove PAGE_SIZE alignment in linker script causing kernel segfault.
commit 6915e04f8847bea16d0890f559694ad8eedd026c upstream.
The linker script cleanup that I did in commit 5d150a97f93 ("um: Clean up
linker script using standard macros.") (2.6.32) accidentally introduced an
ALIGN(PAGE_SIZE) when converting to use INIT_TEXT_SECTION; Richard
Weinberger reported that this causes the kernel to segfault with
CONFIG_STATIC_LINK=y.
I'm not certain why this extra alignment is a problem, but it seems likely
it is because previously
__init_begin = _stext = _text = _sinittext
and with the extra ALIGN(PAGE_SIZE), _sinittext becomes different from the
rest. So there is likely a bug here where something is assuming that
_sinittext is the same as one of those other symbols. But reverting the
accidental change fixes the regression, so it seems worth committing that
now.
Signed-off-by: Tim Abbott <tabbott@ksplice.com>
Reported-by: Richard Weinberger <richard@nod.at>
Cc: Jeff Dike <jdike@addtoit.com>
Tested by: Antoine Martin <antoine@nagafix.co.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/um/kernel/uml.lds.S | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/um/kernel/uml.lds.S b/arch/um/kernel/uml.lds.S index e7a6cca667a..664f94216eb 100644 --- a/arch/um/kernel/uml.lds.S +++ b/arch/um/kernel/uml.lds.S @@ -22,7 +22,7 @@ SECTIONS _text = .; _stext = .; __init_begin = .; - INIT_TEXT_SECTION(PAGE_SIZE) + INIT_TEXT_SECTION(0) . = ALIGN(PAGE_SIZE); .text : |