[PATCH 2/4] stack overflow safe kdump (i386) - crash

From: Fernando Luis Vazquez Cao
Date: Mon Nov 28 2005 - 13:04:56 EST


Replace smp_processor_id with the stack overflow safe
safe_smp_processor_id in the reboot patch to the crash capture kernel.

---

diff -urNp linux-2.6.15-rc2/arch/i386/kernel/crash.c
linux-2.6.15-rc2-sov/arch/i386/kernel/crash.c
--- linux-2.6.15-rc2/arch/i386/kernel/crash.c 2005-10-28
09:02:08.000000000 +0900
+++ linux-2.6.15-rc2-sov/arch/i386/kernel/crash.c 2005-11-29
01:56:13.000000000 +0900
@@ -120,7 +120,7 @@ static void crash_save_self(struct pt_re
struct pt_regs regs;
int cpu;

- cpu = smp_processor_id();
+ cpu = safe_smp_processor_id();
if (saved_regs)
crash_setup_regs(&regs, saved_regs);
else
@@ -211,7 +211,7 @@ 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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