void show_registers(struct pt_regs *regs)
{
const int field = 2 * sizeof(unsigned long);
+ mm_segment_t old_fs = get_fs();
__show_regs(regs);
print_modules();
printk("*HwTLS: %0*lx\n", field, tls);
}
+ if (!user_mode(regs))
+ /* Necessary for getting the correct stack content */
+ set_fs(KERNEL_DS);
show_stacktrace(current, regs);
show_code((unsigned int __user *) regs->cp0_epc);
printk("\n");
+ set_fs(old_fs);
}
static int regs_to_trapnr(struct pt_regs *regs)
oops_enter();
- if (notify_die(DIE_OOPS, str, regs, 0, regs_to_trapnr(regs), SIGSEGV) == NOTIFY_STOP)
+ if (notify_die(DIE_OOPS, str, regs, 0, regs_to_trapnr(regs),
+ SIGSEGV) == NOTIFY_STOP)
sig = 0;
console_verbose();
printk(KERN_ALERT "%s bus error, epc == %0*lx, ra == %0*lx\n",
data ? "Data" : "Instruction",
field, regs->cp0_epc, field, regs->regs[31]);
- if (notify_die(DIE_OOPS, "bus error", regs, 0, regs_to_trapnr(regs), SIGBUS)
- == NOTIFY_STOP)
+ if (notify_die(DIE_OOPS, "bus error", regs, 0, regs_to_trapnr(regs),
+ SIGBUS) == NOTIFY_STOP)
goto out;
die_if_kernel("Oops", regs);
siginfo_t info = {0};
prev_state = exception_enter();
- if (notify_die(DIE_FP, "FP exception", regs, 0, regs_to_trapnr(regs), SIGFPE)
- == NOTIFY_STOP)
+ if (notify_die(DIE_FP, "FP exception", regs, 0, regs_to_trapnr(regs),
+ SIGFPE) == NOTIFY_STOP)
goto out;
die_if_kernel("FP exception in kernel code", regs);
return;
#endif /* CONFIG_KGDB_LOW_LEVEL_TRAP */
- if (notify_die(DIE_TRAP, str, regs, code, regs_to_trapnr(regs), SIGTRAP) == NOTIFY_STOP)
+ if (notify_die(DIE_TRAP, str, regs, code, regs_to_trapnr(regs),
+ SIGTRAP) == NOTIFY_STOP)
return;
/*
*/
switch (bcode) {
case BRK_KPROBE_BP:
- if (notify_die(DIE_BREAK, "debug", regs, bcode, regs_to_trapnr(regs), SIGTRAP) == NOTIFY_STOP)
+ if (notify_die(DIE_BREAK, "debug", regs, bcode,
+ regs_to_trapnr(regs), SIGTRAP) == NOTIFY_STOP)
goto out;
else
break;
case BRK_KPROBE_SSTEPBP:
- if (notify_die(DIE_SSTEPBP, "single_step", regs, bcode, regs_to_trapnr(regs), SIGTRAP) == NOTIFY_STOP)
+ if (notify_die(DIE_SSTEPBP, "single_step", regs, bcode,
+ regs_to_trapnr(regs), SIGTRAP) == NOTIFY_STOP)
goto out;
else
break;
int status = -1;
prev_state = exception_enter();
- if (notify_die(DIE_RI, "RI Fault", regs, 0, regs_to_trapnr(regs), SIGILL)
- == NOTIFY_STOP)
+ if (notify_die(DIE_RI, "RI Fault", regs, 0, regs_to_trapnr(regs),
+ SIGILL) == NOTIFY_STOP)
goto out;
die_if_kernel("Reserved instruction in kernel code", regs);
void __noreturn nmi_exception_handler(struct pt_regs *regs)
{
+ char str[100];
+
raw_notifier_call_chain(&nmi_chain, 0, regs);
bust_spinlocks(1);
- printk("NMI taken!!!!\n");
- die("NMI", regs);
+ snprintf(str, 100, "CPU%d NMI taken, CP0_EPC=%lx\n",
+ smp_processor_id(), regs->cp0_epc);
+ regs->cp0_epc = read_c0_errorepc();
+ die(str, regs);
}
#define VECTORSPACING 0x100 /* for EI/VI mode */
unsigned char *b;
BUG_ON(!cpu_has_veic && !cpu_has_vint);
- BUG_ON((n < 0) && (n > 9));
if (addr == NULL) {
handler = (unsigned long) do_default_vi;