locking/jump_labels: Update bug_at() boot message

First of all, %*ph specifier allows to dump data in hex format using the
pointer to a buffer. This is suitable to use here.

Besides that Thomas suggested to move it to critical level and replace __FILE__
by explicit mention of "jumplabel".
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20170110164354.47372-1-andriy.shevchenko@linux.intel.comSigned-off-by: NIngo Molnar <mingo@kernel.org>

arch/x86/kernel/jump_label.c

@@ -32,8 +32,7 @@ static void bug_at(unsigned char *ip, int line)
 	 * Something went wrong. Crash the box, as something could be
 	 * corrupting the kernel.
 	 */
-	pr_warning("Unexpected op at %pS [%p] (%02x %02x %02x %02x %02x) %s:%d\n",
-	       ip, ip, ip[0], ip[1], ip[2], ip[3], ip[4], __FILE__, line);
+	pr_crit("jump_label: Fatal kernel bug, unexpected op at %pS [%p] (%5ph) %d\n", ip, ip, ip, line);
 	BUG();
 }