diff options
Diffstat (limited to 'arch/avr32/kernel/traps.c')
| -rw-r--r-- | arch/avr32/kernel/traps.c | 59 |
1 files changed, 25 insertions, 34 deletions
diff --git a/arch/avr32/kernel/traps.c b/arch/avr32/kernel/traps.c index b835c4c0136..682b2478691 100644 --- a/arch/avr32/kernel/traps.c +++ b/arch/avr32/kernel/traps.c @@ -7,6 +7,7 @@ */ #include <linux/bug.h> +#include <linux/hardirq.h> #include <linux/init.h> #include <linux/kallsyms.h> #include <linux/kdebug.h> @@ -23,7 +24,7 @@ static DEFINE_SPINLOCK(die_lock); -void NORET_TYPE die(const char *str, struct pt_regs *regs, long err) +void die(const char *str, struct pt_regs *regs, long err) { static int die_counter; @@ -31,22 +32,25 @@ void NORET_TYPE die(const char *str, struct pt_regs *regs, long err) spin_lock_irq(&die_lock); bust_spinlocks(1); - printk(KERN_ALERT "Oops: %s, sig: %ld [#%d]\n" KERN_EMERG, + printk(KERN_ALERT "Oops: %s, sig: %ld [#%d]\n", str, err, ++die_counter); + + printk(KERN_EMERG); + #ifdef CONFIG_PREEMPT - printk("PREEMPT "); + printk(KERN_CONT "PREEMPT "); #endif #ifdef CONFIG_FRAME_POINTER - printk("FRAME_POINTER "); + printk(KERN_CONT "FRAME_POINTER "); #endif if (current_cpu_data.features & AVR32_FEATURE_OCD) { unsigned long did = ocd_read(DID); - printk("chip: 0x%03lx:0x%04lx rev %lu\n", + printk(KERN_CONT "chip: 0x%03lx:0x%04lx rev %lu\n", (did >> 1) & 0x7ff, (did >> 12) & 0x7fff, (did >> 28) & 0xf); } else { - printk("cpu: arch %u r%u / core %u r%u\n", + printk(KERN_CONT "cpu: arch %u r%u / core %u r%u\n", current_cpu_data.arch_type, current_cpu_data.arch_revision, current_cpu_data.cpu_type, @@ -57,7 +61,7 @@ void NORET_TYPE die(const char *str, struct pt_regs *regs, long err) show_regs_log_lvl(regs, KERN_EMERG); show_stack_log_lvl(current, regs->sp, regs, KERN_EMERG); bust_spinlocks(0); - add_taint(TAINT_DIE); + add_taint(TAINT_DIE, LOCKDEP_NOW_UNRELIABLE); spin_unlock_irq(&die_lock); if (in_interrupt()) @@ -74,36 +78,23 @@ void _exception(long signr, struct pt_regs *regs, int code, { siginfo_t info; - if (!user_mode(regs)) + if (!user_mode(regs)) { + const struct exception_table_entry *fixup; + + /* Are we prepared to handle this kernel fault? */ + fixup = search_exception_tables(regs->pc); + if (fixup) { + regs->pc = fixup->fixup; + return; + } die("Unhandled exception in kernel mode", regs, signr); + } memset(&info, 0, sizeof(info)); info.si_signo = signr; info.si_code = code; info.si_addr = (void __user *)addr; force_sig_info(signr, &info, current); - - /* - * Init gets no signals that it doesn't have a handler for. - * That's all very well, but if it has caused a synchronous - * exception and we ignore the resulting signal, it will just - * generate the same exception over and over again and we get - * nowhere. Better to kill it and let the kernel panic. - */ - if (is_global_init(current)) { - __sighandler_t handler; - - spin_lock_irq(¤t->sighand->siglock); - handler = current->sighand->action[signr-1].sa.sa_handler; - spin_unlock_irq(¤t->sighand->siglock); - if (handler == SIG_DFL) { - /* init has generated a synchronous exception - and it doesn't have a handler for the signal */ - printk(KERN_CRIT "init has generated signal %ld " - "but has no handler for it\n", signr); - do_exit(signr); - } - } } asmlinkage void do_nmi(unsigned long ecr, struct pt_regs *regs) @@ -116,15 +107,15 @@ asmlinkage void do_nmi(unsigned long ecr, struct pt_regs *regs) switch (ret) { case NOTIFY_OK: case NOTIFY_STOP: - return; + break; case NOTIFY_BAD: die("Fatal Non-Maskable Interrupt", regs, SIGINT); default: + printk(KERN_ALERT "Got NMI, but nobody cared. Disabling...\n"); + nmi_disable(); break; } - - printk(KERN_ALERT "Got NMI, but nobody cared. Disabling...\n"); - nmi_disable(); + nmi_exit(); } asmlinkage void do_critical_exception(unsigned long ecr, struct pt_regs *regs) |