X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=kernel%2Fpanic.c;h=da4d6bac270e90dcdc0dfc6052dbb49f935cc981;hb=efd9ac8630e89b9ee7ce64008bd7783952374f37;hp=f64f4c1ac11fc78c6c13d28968383e77c724e35c;hpb=dcb76f88683618ed6ef0df66643dba1285881ee5;p=linux-2.6-omap-h63xx.git

diff --git a/kernel/panic.c b/kernel/panic.c
index f64f4c1ac11..da4d6bac270 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -19,6 +19,7 @@
 #include <linux/nmi.h>
 #include <linux/kexec.h>
 #include <linux/debug_locks.h>
+#include <linux/random.h>
 
 int panic_on_oops;
 int tainted;
@@ -56,14 +57,14 @@ EXPORT_SYMBOL(panic_blink);
  *
  *	This function never returns.
  */
- 
+
 NORET_TYPE void panic(const char * fmt, ...)
 {
 	long i;
 	static char buf[1024];
 	va_list args;
 #if defined(CONFIG_S390)
-        unsigned long caller = (unsigned long) __builtin_return_address(0);
+	unsigned long caller = (unsigned long) __builtin_return_address(0);
 #endif
 
 	/*
@@ -128,7 +129,7 @@ NORET_TYPE void panic(const char * fmt, ...)
 	}
 #endif
 #if defined(CONFIG_S390)
-        disabled_wait(caller);
+	disabled_wait(caller);
 #endif
 	local_irq_enable();
 	for (i = 0;;) {
@@ -148,13 +149,13 @@ EXPORT_SYMBOL(panic);
  *  'F' - Module has been forcibly loaded.
  *  'S' - SMP with CPUs not designed for SMP.
  *  'R' - User forced a module unload.
- *  'M' - Machine had a machine check experience.
+ *  'M' - System experienced a machine check exception.
  *  'B' - System has hit bad_page.
  *  'U' - Userspace-defined naughtiness.
  *
  *	The string is overwritten by the next call to print_taint().
  */
- 
+
 const char *print_tainted(void)
 {
 	static char buf[20];
@@ -164,7 +165,7 @@ const char *print_tainted(void)
 			tainted & TAINT_FORCED_MODULE ? 'F' : ' ',
 			tainted & TAINT_UNSAFE_SMP ? 'S' : ' ',
 			tainted & TAINT_FORCED_RMMOD ? 'R' : ' ',
- 			tainted & TAINT_MACHINE_CHECK ? 'M' : ' ',
+			tainted & TAINT_MACHINE_CHECK ? 'M' : ' ',
 			tainted & TAINT_BAD_PAGE ? 'B' : ' ',
 			tainted & TAINT_USER ? 'U' : ' ',
 			tainted & TAINT_DIE ? 'D' : ' ');
@@ -265,6 +266,20 @@ void oops_enter(void)
 	do_oops_enter_exit();
 }
 
+/*
+ * 64-bit random ID for oopses:
+ */
+static u64 oops_id;
+
+static int init_oops_id(void)
+{
+	if (!oops_id)
+		get_random_bytes(&oops_id, sizeof(oops_id));
+
+	return 0;
+}
+late_initcall(init_oops_id);
+
 /*
  * Called when the architecture exits its oops handler, after printing
  * everything.
@@ -272,6 +287,9 @@ void oops_enter(void)
 void oops_exit(void)
 {
 	do_oops_enter_exit();
+	init_oops_id();
+	printk(KERN_WARNING "---[ end trace %016llx ]---\n",
+		(unsigned long long)oops_id);
 }
 
 #ifdef CONFIG_CC_STACKPROTECTOR