#include <linux/interrupt.h>
#include <linux/nmi.h>
#include <linux/kexec.h>
+#include <linux/debug_locks.h>
int panic_on_oops;
int tainted;
*
* 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
/*
}
#endif
#if defined(CONFIG_S390)
- disabled_wait(caller);
+ disabled_wait(caller);
#endif
local_irq_enable();
for (i = 0;;) {
* '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];
if (tainted) {
- snprintf(buf, sizeof(buf), "Tainted: %c%c%c%c%c%c",
+ snprintf(buf, sizeof(buf), "Tainted: %c%c%c%c%c%c%c%c",
tainted & TAINT_PROPRIETARY_MODULE ? 'P' : 'G',
tainted & TAINT_FORCED_MODULE ? 'F' : ' ',
tainted & TAINT_UNSAFE_SMP ? 'S' : ' ',
tainted & TAINT_FORCED_RMMOD ? 'R' : ' ',
- tainted & TAINT_MACHINE_CHECK ? 'M' : ' ',
- tainted & TAINT_BAD_PAGE ? 'B' : ' ');
+ tainted & TAINT_MACHINE_CHECK ? 'M' : ' ',
+ tainted & TAINT_BAD_PAGE ? 'B' : ' ',
+ tainted & TAINT_USER ? 'U' : ' ',
+ tainted & TAINT_DIE ? 'D' : ' ');
}
else
snprintf(buf, sizeof(buf), "Not tainted");
void add_taint(unsigned flag)
{
+ debug_locks = 0; /* can't trust the integrity of the kernel anymore */
tainted |= flag;
}
EXPORT_SYMBOL(add_taint);
*/
void oops_enter(void)
{
+ debug_locks_off(); /* can't trust the integrity of the kernel anymore */
do_oops_enter_exit();
}
{
do_oops_enter_exit();
}
+
+#ifdef CONFIG_CC_STACKPROTECTOR
+/*
+ * Called when gcc's -fstack-protector feature is used, and
+ * gcc detects corruption of the on-stack canary value
+ */
+void __stack_chk_fail(void)
+{
+ panic("stack-protector: Kernel stack is corrupted");
+}
+EXPORT_SYMBOL(__stack_chk_fail);
+#endif