x86: add the capability to print fuzzy backtraces

For enhancing the 32 bit EBP based backtracer, I need the capability
for the backtracer to tell it's customer that an entry is either
reliable or unreliable, and the backtrace printing code then needs to
print the unreliable ones slightly different.

This patch adds the basic capability, the next patch will add a user
of this capability.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 2 insertions, 2 deletions

diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
index a0130eb2fa50..383760bfd283 100644
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -329,7 +329,7 @@ void __show_regs(struct pt_regs * regs)
                 (int)strcspn(init_utsname()->version, " "),
                 init_utsname()->version);
         printk("RIP: %04lx:[<%016lx>] ", regs->cs & 0xffff, regs->ip);
-        printk_address(regs->ip);
+        printk_address(regs->ip, regs->bp);
         printk("RSP: %04lx:%016lx  EFLAGS: %08lx\n", regs->ss, regs->sp,
                 regs->flags);
         printk("RAX: %016lx RBX: %016lx RCX: %016lx\n",
@@ -377,7 +377,7 @@ void show_regs(struct pt_regs *regs)
 {
         printk("CPU %d:", smp_processor_id());
         __show_regs(regs);
-        show_trace(NULL, regs, (void *)(regs + 1));
+        show_trace(NULL, regs, (void *)(regs + 1), regs->bp);
 }
 
 /*