The patch titled
stack overflow safe kdump: crash: use safe_smp_processor_id()
has been added to the -mm tree. Its filename is
stack-overflow-safe-kdump-crash_use_safe_smp_processor_id.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: stack overflow safe kdump: crash: use safe_smp_processor_id()
From: Fernando Vazquez <fernando@xxxxxxxxxxxxxxxxx>
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>
Looks-reasonable-to: Andi Kleen <ak@xxxxxx>
Acked-by: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>
Cc: Vivek Goyal <vgoyal@xxxxxxxxxx>
Cc: James Bottomley <James.Bottomley@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
arch/i386/kernel/crash.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff -puN arch/i386/kernel/crash.c~stack-overflow-safe-kdump-crash_use_safe_smp_processor_id arch/i386/kernel/crash.c
--- a/arch/i386/kernel/crash.c~stack-overflow-safe-kdump-crash_use_safe_smp_processor_id
+++ a/arch/i386/kernel/crash.c
@@ -88,7 +88,7 @@ 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);
}
@@ -185,7 +185,7 @@ 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)
_
Patches currently in -mm which might be from fernando@xxxxxxxxxxxxxxxxx are
stack-overflow-safe-kdump-safe_smp_processor_id.patch
stack-overflow-safe-kdump-safe_smp_processor_id_voyager.patch
stack-overflow-safe-kdump-crash_use_safe_smp_processor_id.patch
stack-overflow-safe-kdump-safe_smp_send_nmi_allbutself.patch
-
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