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| author | Richard Weinberger <richard@nod.at> | 2010-10-27 01:21:16 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-27 03:52:04 +0400 |
| commit | 6915e04f8847bea16d0890f559694ad8eedd026c (patch) | |
| tree | ec0028a3ab61e86c856782d962bea7b863f04f96 /arch/um | |
| parent | 09358972bff5ce99de496bbba97c85d417b3c054 (diff) | |
| download | linux-6915e04f8847bea16d0890f559694ad8eedd026c.tar.xz | |
um: remove PAGE_SIZE alignment in linker script causing kernel segfault.
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>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/um')
| -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 ec6378550671..9a873d765615 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 : |