[PATCH 2/3] stack overflow safe kdump (2.6.18-rc1-i386) -crash_use_safe_smp_processor_id

From: Fernando Luis Vázquez Cao
Date: Mon Jul 10 2006 - 03:49:34 EST


Substitute "smp_processor_id" with the stack overflow-safe
"safe_smp_processor_id" in the reboot path to the second kernel.

Signed-off-by: Fernando Vazquez <fernando@xxxxxxxxxxxxxxxxx>
---

diff -urNp linux-2.6.18-rc1/arch/i386/kernel/crash.c linux-2.6.18-rc1-sof/arch/i386/kernel/crash.c
--- linux-2.6.18-rc1/arch/i386/kernel/crash.c 2006-07-10 10:59:58.000000000 +0900
+++ linux-2.6.18-rc1-sof/arch/i386/kernel/crash.c 2006-07-10 16:06:55.000000000 +0900
@@ -86,7 +86,7 @@ static void crash_save_self(struct pt_re
{
int cpu;

- cpu = smp_processor_id();
+ cpu = safe_smp_processor_id();
crash_save_this_cpu(regs, cpu);
}

@@ -169,7 +169,7 @@ void machine_crash_shutdown(struct pt_re
local_irq_disable();

/* Make a note of crashing cpu. Will be used in NMI callback.*/
- crashing_cpu = smp_processor_id();
+ crashing_cpu = safe_smp_processor_id();
nmi_shootdown_cpus();
lapic_shutdown();
#if defined(CONFIG_X86_IO_APIC)


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