mirror of https://gitee.com/openkylin/linux.git
[PATCH] printk levels for i386 oops code.
Especially useful when users have booted with 'quiet'. In the regular 'oops' path, we set the console_loglevel before we start spewing debug info, but we can call the backtrace code from other places now too, such as the spinlock debugging code. Signed-off-by: Dave Jones <davej@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Dave Jones
Linus Torvalds
parent
51989b9ffe
commit
9c107805ab
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@ -120,7 +120,7 @@ static inline unsigned long print_context_stack(struct thread_info *tinfo,
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#ifdef CONFIG_FRAME_POINTER
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while (valid_stack_ptr(tinfo, (void *)ebp)) {
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addr = *(unsigned long *)(ebp + 4);
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printk(" [<%08lx>] ", addr);
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printk(KERN_EMERG " [<%08lx>] ", addr);
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print_symbol("%s", addr);
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printk("\n");
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ebp = *(unsigned long *)ebp;
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@ -129,7 +129,7 @@ static inline unsigned long print_context_stack(struct thread_info *tinfo,
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while (valid_stack_ptr(tinfo, stack)) {
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addr = *stack++;
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if (__kernel_text_address(addr)) {
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printk(" [<%08lx>]", addr);
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printk(KERN_EMERG " [<%08lx>]", addr);
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print_symbol(" %s", addr);
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printk("\n");
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}
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@ -161,7 +161,7 @@ void show_trace(struct task_struct *task, unsigned long * stack)
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stack = (unsigned long*)context->previous_esp;
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if (!stack)
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break;
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printk(" =======================\n");
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printk(KERN_EMERG " =======================\n");
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}
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}
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@ -178,14 +178,15 @@ void show_stack(struct task_struct *task, unsigned long *esp)
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}
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stack = esp;
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printk(KERN_EMERG);
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for(i = 0; i < kstack_depth_to_print; i++) {
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if (kstack_end(stack))
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break;
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if (i && ((i % 8) == 0))
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printk("\n ");
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printk("\n" KERN_EMERG " ");
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printk("%08lx ", *stack++);
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}
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printk("\nCall Trace:\n");
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printk("\n" KERN_EMERG "Call Trace:\n");
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show_trace(task, esp);
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}
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@ -216,18 +217,18 @@ void show_registers(struct pt_regs *regs)
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ss = regs->xss & 0xffff;
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}
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print_modules();
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printk("CPU: %d\nEIP: %04x:[<%08lx>] %s VLI\nEFLAGS: %08lx"
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" (%s) \n",
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printk(KERN_EMERG "CPU: %d\nEIP: %04x:[<%08lx>] %s VLI\n"
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"EFLAGS: %08lx (%s) \n",
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smp_processor_id(), 0xffff & regs->xcs, regs->eip,
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print_tainted(), regs->eflags, system_utsname.release);
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print_symbol("EIP is at %s\n", regs->eip);
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printk("eax: %08lx ebx: %08lx ecx: %08lx edx: %08lx\n",
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print_symbol(KERN_EMERG "EIP is at %s\n", regs->eip);
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printk(KERN_EMERG "eax: %08lx ebx: %08lx ecx: %08lx edx: %08lx\n",
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regs->eax, regs->ebx, regs->ecx, regs->edx);
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printk("esi: %08lx edi: %08lx ebp: %08lx esp: %08lx\n",
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printk(KERN_EMERG "esi: %08lx edi: %08lx ebp: %08lx esp: %08lx\n",
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regs->esi, regs->edi, regs->ebp, esp);
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printk("ds: %04x es: %04x ss: %04x\n",
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printk(KERN_EMERG "ds: %04x es: %04x ss: %04x\n",
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regs->xds & 0xffff, regs->xes & 0xffff, ss);
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printk("Process %s (pid: %d, threadinfo=%p task=%p)",
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printk(KERN_EMERG "Process %s (pid: %d, threadinfo=%p task=%p)",
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current->comm, current->pid, current_thread_info(), current);
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/*
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* When in-kernel, we also print out the stack and code at the
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@ -236,10 +237,10 @@ void show_registers(struct pt_regs *regs)
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if (in_kernel) {
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u8 __user *eip;
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printk("\nStack: ");
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printk("\n" KERN_EMERG "Stack: ");
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show_stack(NULL, (unsigned long*)esp);
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printk("Code: ");
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printk(KERN_EMERG "Code: ");
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eip = (u8 __user *)regs->eip - 43;
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for (i = 0; i < 64; i++, eip++) {
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@ -280,15 +281,15 @@ static void handle_BUG(struct pt_regs *regs)
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(unsigned long)file < PAGE_OFFSET || __get_user(c, file))
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file = "<bad filename>";
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printk("------------[ cut here ]------------\n");
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printk(KERN_ALERT "kernel BUG at %s:%d!\n", file, line);
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printk(KERN_EMERG "------------[ cut here ]------------\n");
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printk(KERN_EMERG "kernel BUG at %s:%d!\n", file, line);
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no_bug:
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return;
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/* Here we know it was a BUG but file-n-line is unavailable */
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bug:
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printk("Kernel BUG\n");
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printk(KERN_EMERG "Kernel BUG\n");
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}
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/* This is gone through when something in the kernel
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@ -321,16 +322,20 @@ void die(const char * str, struct pt_regs * regs, long err)
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if (++die.lock_owner_depth < 3) {
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int nl = 0;
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handle_BUG(regs);
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printk(KERN_ALERT "%s: %04lx [#%d]\n", str, err & 0xffff, ++die_counter);
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printk(KERN_EMERG "%s: %04lx [#%d]\n", str, err & 0xffff, ++die_counter);
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#ifdef CONFIG_PREEMPT
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printk("PREEMPT ");
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printk(KERN_EMERG "PREEMPT ");
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nl = 1;
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#endif
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#ifdef CONFIG_SMP
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if (!nl)
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printk(KERN_EMERG);
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printk("SMP ");
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nl = 1;
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#endif
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#ifdef CONFIG_DEBUG_PAGEALLOC
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if (!nl)
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printk(KERN_EMERG);
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printk("DEBUG_PAGEALLOC");
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nl = 1;
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#endif
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@ -339,7 +344,7 @@ void die(const char * str, struct pt_regs * regs, long err)
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notify_die(DIE_OOPS, (char *)str, regs, err, 255, SIGSEGV);
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show_registers(regs);
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} else
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printk(KERN_ERR "Recursive die() failure, output suppressed\n");
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printk(KERN_EMERG "Recursive die() failure, output suppressed\n");
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bust_spinlocks(0);
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die.lock_owner = -1;
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@ -527,8 +532,10 @@ fastcall void __kprobes do_general_protection(struct pt_regs * regs,
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static void mem_parity_error(unsigned char reason, struct pt_regs * regs)
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{
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printk("Uhhuh. NMI received. Dazed and confused, but trying to continue\n");
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printk("You probably have a hardware problem with your RAM chips\n");
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printk(KERN_EMERG "Uhhuh. NMI received. Dazed and confused, but trying "
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"to continue\n");
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printk(KERN_EMERG "You probably have a hardware problem with your RAM "
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"chips\n");
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/* Clear and disable the memory parity error line. */
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clear_mem_error(reason);
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@ -538,7 +545,7 @@ static void io_check_error(unsigned char reason, struct pt_regs * regs)
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{
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unsigned long i;
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printk("NMI: IOCK error (debug interrupt?)\n");
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printk(KERN_EMERG "NMI: IOCK error (debug interrupt?)\n");
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show_registers(regs);
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/* Re-enable the IOCK line, wait for a few seconds */
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@ -580,11 +587,11 @@ void die_nmi (struct pt_regs *regs, const char *msg)
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* to get a message out.
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*/
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bust_spinlocks(1);
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printk(msg);
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printk(KERN_EMERG "%s", msg);
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printk(" on CPU%d, eip %08lx, registers:\n",
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smp_processor_id(), regs->eip);
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show_registers(regs);
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printk("console shuts up ...\n");
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printk(KERN_EMERG "console shuts up ...\n");
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console_silent();
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spin_unlock(&nmi_print_lock);
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bust_spinlocks(0);
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@ -990,8 +997,8 @@ asmlinkage void math_state_restore(struct pt_regs regs)
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asmlinkage void math_emulate(long arg)
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{
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printk("math-emulation not enabled and no coprocessor found.\n");
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printk("killing %s.\n",current->comm);
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printk(KERN_EMERG "math-emulation not enabled and no coprocessor found.\n");
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printk(KERN_EMERG "killing %s.\n",current->comm);
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force_sig(SIGFPE,current);
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schedule();
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}
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