From: Johannes Weiner on
On Fri, Mar 26, 2010 at 03:21:31PM -0700, Yinghai Lu wrote:
> Try to fix
> ------------[ cut here ]------------
> WARNING: at arch/x86/mm/init.c:342 free_init_pages+0x4c/0xfa()
> free_init_pages: range [0x40daf000, 0x40db5c24] is not aligned
> Modules linked in:
> Pid: 0, comm: swapper Not tainted 2.6.34-rc2-tip-03946-g4f16b23-dirty #50
> Call Trace:
> [<40232e9f>] warn_slowpath_common+0x65/0x7c
> [<4021c9f0>] ? free_init_pages+0x4c/0xfa
> [<40881434>] ? _etext+0x0/0x24
> [<40232eea>] warn_slowpath_fmt+0x24/0x27
> [<4021c9f0>] free_init_pages+0x4c/0xfa
> [<40881434>] ? _etext+0x0/0x24
> [<40d3f4bd>] alternative_instructions+0xf6/0x100
> [<40d3fe4f>] check_bugs+0xbd/0xbf
> [<40d398a7>] start_kernel+0x2d5/0x2e4
> [<40d390ce>] i386_start_kernel+0xce/0xd5
> ---[ end trace 4eaa2a86a8e2da22 ]---
>
> Comments in vmlinux.lds.S already said:
> | /*
> | * smp_locks might be freed after init
> | * start/end must be page aligned
> | */
>
> Signed-off-by: Yinghai Lu <yinghai(a)kernel.org>

FWIW, Acked-by: Johannes Weiner <hannes(a)cmpxchg.org>

> ---
> arch/x86/kernel/vmlinux.lds.S | 2 +-
> 1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S
> index 44879df..2cc2497 100644
> --- a/arch/x86/kernel/vmlinux.lds.S
> +++ b/arch/x86/kernel/vmlinux.lds.S
> @@ -291,8 +291,8 @@ SECTIONS
> .smp_locks : AT(ADDR(.smp_locks) - LOAD_OFFSET) {
> __smp_locks = .;
> *(.smp_locks)
> - __smp_locks_end = .;
> . = ALIGN(PAGE_SIZE);
> + __smp_locks_end = .;
> }
>
> #ifdef CONFIG_X86_64
--
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