[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 1605967cce91c1a076a482a56cb9cf399ebc204e..55ae802dc0ad6ffd6c06b9bd12e860f9a777267b 100644 (file)
--- 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);