#include <linux/hardirq.h>
#include <linux/kprobes.h>
#include <linux/delay.h> /* for ssleep() */
+#include <linux/kdebug.h>
#include <asm/fpswa.h>
#include <asm/ia32.h>
#include <asm/intrinsics.h>
#include <asm/processor.h>
#include <asm/uaccess.h>
-#include <asm/kdebug.h>
fpswa_interface_t *fpswa_interface;
EXPORT_SYMBOL(fpswa_interface);
-ATOMIC_NOTIFIER_HEAD(ia64die_chain);
-
-int
-register_die_notifier(struct notifier_block *nb)
-{
- return atomic_notifier_chain_register(&ia64die_chain, nb);
-}
-EXPORT_SYMBOL_GPL(register_die_notifier);
-
-int
-unregister_die_notifier(struct notifier_block *nb)
-{
- return atomic_notifier_chain_unregister(&ia64die_chain, nb);
-}
-EXPORT_SYMBOL_GPL(unregister_die_notifier);
-
void __init
trap_init (void)
{
fpswa_interface = __va(ia64_boot_param->fpswa);
}
-void
+int
die (const char *str, struct pt_regs *regs, long err)
{
static struct {
u32 lock_owner;
int lock_owner_depth;
} die = {
- .lock = SPIN_LOCK_UNLOCKED,
- .lock_owner = -1,
- .lock_owner_depth = 0
+ .lock = __SPIN_LOCK_UNLOCKED(die.lock),
+ .lock_owner = -1,
+ .lock_owner_depth = 0
};
static int die_counter;
int cpu = get_cpu();
if (++die.lock_owner_depth < 3) {
printk("%s[%d]: %s %ld [%d]\n",
- current->comm, current->pid, str, err, ++die_counter);
- (void) notify_die(DIE_OOPS, (char *)str, regs, err, 255, SIGSEGV);
- show_regs(regs);
+ current->comm, task_pid_nr(current), str, err, ++die_counter);
+ if (notify_die(DIE_OOPS, str, regs, err, 255, SIGSEGV)
+ != NOTIFY_STOP)
+ show_regs(regs);
+ else
+ regs = NULL;
} else
printk(KERN_ERR "Recursive die() failure, output suppressed\n");
bust_spinlocks(0);
die.lock_owner = -1;
+ add_taint(TAINT_DIE);
spin_unlock_irq(&die.lock);
+ if (!regs)
+ return 1;
+
if (panic_on_oops)
panic("Fatal exception");
do_exit(SIGSEGV);
+ return 0;
}
-void
+int
die_if_kernel (char *str, struct pt_regs *regs, long err)
{
if (!user_mode(regs))
- die(str, regs, err);
+ return die(str, regs, err);
+ return 0;
}
void
if (notify_die(DIE_BREAK, "break 0", regs, break_num, TRAP_BRKPT, SIGTRAP)
== NOTIFY_STOP)
return;
- die_if_kernel("bugcheck!", regs, break_num);
+ if (die_if_kernel("bugcheck!", regs, break_num))
+ return;
sig = SIGILL; code = ILL_ILLOPC;
break;
break;
default:
- if (break_num < 0x40000 || break_num > 0x100000)
- die_if_kernel("Bad break", regs, break_num);
+ if ((break_num < 0x40000 || break_num > 0x100000)
+ && die_if_kernel("Bad break", regs, break_num))
+ return;
if (break_num < 0x80000) {
sig = SIGILL; code = __ILL_BREAK;
* Lower 4 bits are used as a count. Upper bits are a sequence
* number that is updated when count is reset. The cmpxchg will
* fail is seqno has changed. This minimizes mutiple cpus
- * reseting the count.
+ * resetting the count.
*/
if (current_jiffies > last.time)
(void) cmpxchg_acq(&last.count, count, 16 + (count & ~15));
last.time = current_jiffies + 5 * HZ;
printk(KERN_WARNING
"%s(%d): floating-point assist fault at ip %016lx, isr %016lx\n",
- current->comm, current->pid, regs->cr_iip + ia64_psr(regs)->ri, isr);
+ current->comm, task_pid_nr(current), regs->cr_iip + ia64_psr(regs)->ri, isr);
}
}
}
#endif
sprintf(buf, "IA-64 Illegal operation fault");
- die_if_kernel(buf, ®s, 0);
+ rv.fkt = 0;
+ if (die_if_kernel(buf, ®s, 0))
+ return rv;
memset(&si, 0, sizeof(si));
si.si_signo = SIGILL;
si.si_code = ILL_ILLOPC;
si.si_addr = (void __user *) (regs.cr_iip + ia64_psr(®s)->ri);
force_sig_info(SIGILL, &si, current);
- rv.fkt = 0;
return rv;
}
if (code == 8) {
# ifdef CONFIG_IA64_PRINT_HAZARDS
printk("%s[%d]: possible hazard @ ip=%016lx (pr = %016lx)\n",
- current->comm, current->pid,
+ current->comm, task_pid_nr(current),
regs.cr_iip + ia64_psr(®s)->ri, regs.pr);
# endif
return;
sprintf(buf, "Fault %lu", vector);
break;
}
- die_if_kernel(buf, ®s, error);
- force_sig(SIGILL, current);
+ if (!die_if_kernel(buf, ®s, error))
+ force_sig(SIGILL, current);
}