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| author | Tony Lindgren <tony@atomide.com> | 2010-10-26 19:52:21 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-10-27 21:40:29 +0100 |
| commit | 88d927e94805ebeec11ec7687df7789b954e334e (patch) | |
| tree | 972ffd458c87a0f30b05d0648a33e24920fdb63e | |
| parent | d463f3633da7307c4162c4b45e0a94bb7fab44d3 (diff) | |
| download | lwn-88d927e94805ebeec11ec7687df7789b954e334e.tar.gz lwn-88d927e94805ebeec11ec7687df7789b954e334e.zip | |
ARM: 6465/1: Fix data abort accessing proc_info from __lookup_processor_type
Commit 5085f3ff458521045f7e43da62b8c30ea7df2e82 added better support for
CONFIG_HOTPLUG_CPU by keeping proc_info around. However, depending on
the Kconfig options selected, this can make the booting fail mysteriously
early on.
Turns out a data abort can happen in __lookup_processor in ldmia r5 {r3, r4}.
When it happens the address loaded to r5 is not aligned. Fix the problem by
aligning proc_info.
Reported-by: Anand Gadiyar <gadiyar@ti.com>
Tested-by: Anand Gadiyar <gadiyar@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| -rw-r--r-- | arch/arm/kernel/vmlinux.lds.S | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S index 1953e3d21abf..cead8893b46b 100644 --- a/arch/arm/kernel/vmlinux.lds.S +++ b/arch/arm/kernel/vmlinux.lds.S @@ -113,6 +113,7 @@ SECTIONS *(.rodata.*) *(.glue_7) *(.glue_7t) + . = ALIGN(4); *(.got) /* Global offset table */ ARM_CPU_KEEP(PROC_INFO) } |