From: David S. Miller <davem@sunset.davemloft.net>
Date: Sat, 22 Jul 2006 08:12:09 +0000 (-0700)
Subject: [SPARC64]: Explicitly print return PC when the kernel fault PC is bogus.
X-Git-Tag: upstream/snapshot3+hdmi~38749^2~2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=eb398d1044e0c1c19c2f5041acdb29ddb5bbc9f8;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

[SPARC64]: Explicitly print return PC when the kernel fault PC is bogus.

That way we'll have at least some debugging info even if
the stack dump explodes.

Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/arch/sparc64/mm/fault.c b/arch/sparc64/mm/fault.c
index 1605967..55ae802 100644
--- a/arch/sparc64/mm/fault.c
+++ b/arch/sparc64/mm/fault.c
@@ -19,6 +19,7 @@
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/kprobes.h>
+#include <linux/kallsyms.h>
 
 #include <asm/page.h>
 #include <asm/pgtable.h>
@@ -132,6 +133,8 @@ static void bad_kernel_pc(struct pt_regs *regs, unsigned long vaddr)
 
 	printk(KERN_CRIT "OOPS: Bogus kernel PC [%016lx] in fault handler\n",
 	       regs->tpc);
+	printk(KERN_CRIT "OOPS: RPC [%016lx]\n", regs->u_regs[15]);
+	print_symbol("RPC: <%s>\n", regs->u_regs[15]);
 	printk(KERN_CRIT "OOPS: Fault was to vaddr[%lx]\n", vaddr);
 	__asm__("mov %%sp, %0" : "=r" (ksp));
 	show_stack(current, ksp);