stack overflow safe kdump ( 2.6.15-rc3-i386) - do_nmi

PATCH New Fernando Luis Vazquez Cao 1 participant 1 message Nov 30, 2005

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Fernando Luis Vazquez Cao

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2005-11-30 07:41 UTC #0 lore raw

PATCH 3/4 stack overflow safe kdump ( 2.6.15-rc3-i386) - do_nmi

crash_nmi_callback is called right after a system crash which might have caused by stack overflow, thus smp_processor_id should not be trusted. Use the safe replacement safe_smp_processor_id.

---

arch/i386/kernel/traps.c +1 -1

diff -urNp linux-2.6.15-rc3/arch/i386/kernel/traps.c linux-2.6.15-rc3-sov/arch/i386/kernel/traps.c
@@ -648,7 +648,7 @@ fastcall void do_nmi(struct pt_regs * re
 
 	nmi_enter();
 
-	cpu = smp_processor_id();
+	cpu = safe_smp_processor_id();
 
 #ifdef CONFIG_HOTPLUG_CPU
 	if (!cpu_online(cpu)) {