nds32: Only print one page of stack when die to prevent printing too much information.

It may print too much information sometimes if the stack is wrong or
too big. This patch can limit the debug information in a page of stack.

Signed-off-by: Greentime Hu <greentime@andestech.com>

diff --git a/arch/nds32/kernel/traps.c b/arch/nds32/kernel/traps.c
index b0b85b7ab0792a56b3bb9da5867a7991da015e5b..1496aab48998817c00cb175dbd8b09b3453d73dd 100644 (file)
--- a/arch/nds32/kernel/traps.c
+++ b/arch/nds32/kernel/traps.c
@@ -173,11 +173,10 @@ void die(const char *str, struct pt_regs *regs, int err)
        pr_emerg("CPU: %i\n", smp_processor_id());
        show_regs(regs);
        pr_emerg("Process %s (pid: %d, stack limit = 0x%p)\n",
-                tsk->comm, tsk->pid, task_thread_info(tsk) + 1);
+                tsk->comm, tsk->pid, end_of_stack(tsk));
 
        if (!user_mode(regs) || in_interrupt()) {
-               dump_mem("Stack: ", regs->sp,
-                        THREAD_SIZE + (unsigned long)task_thread_info(tsk));
+               dump_mem("Stack: ", regs->sp, (regs->sp + PAGE_SIZE) & PAGE_MASK);
                dump_instr(regs);
                dump_stack();
        }