static void show_trace(long *sp)
{
int i;
long addr;
sp = sp ? sp : (long *) &sp;
printk(KERN_NOTICE "Call Trace: ");
i = 1;
while ((long) sp & (PAGE_SIZE - 1)) {
if (__get_user(addr, sp++)) {
if (i && ((i % 6) == 0))
printk(KERN_NOTICE "\n");
printk(KERN_NOTICE " (Bad stack address)\n");
break;
}
if (kernel_text_address(addr)) {
if (i && ((i % 6) == 0))
printk(KERN_NOTICE "\n");
if (i > 40) {
printk(KERN_NOTICE " ...");
break;
}
printk(KERN_NOTICE " [<%08lx>]", addr);
i++;
}
}
printk(KERN_NOTICE "\n");
}
void show_trace(struct task_struct *task, unsigned long *stack)
{
unsigned long addr;
if (!stack)
stack = (unsigned long *)&stack;
printk(KERN_NOTICE "Call Trace: ");
#ifdef CONFIG_KALLSYMS
printk(KERN_NOTICE "\n");
#endif
while (!kstack_end(stack)) {
addr = *stack++;
/*
* If the address is either in the text segment of the
* kernel, or in the region which contains vmalloc'ed
* memory, it *may* be the address of a calling
* routine; if so, print it so that someone tracing
* down the cause of the crash will be able to figure
* out the call path that was taken.
*/
if (kernel_text_address(addr))
print_ip_sym(addr);
}
printk(KERN_NOTICE "\n");
if (!task)
task = current;
debug_show_held_locks(task);
}
static void show_trace(struct task_struct *tsk, unsigned long *sp)
{
unsigned long addr;
printk("\nCall Trace:");
#ifdef CONFIG_KALLSYMS
printk("\n");
#endif
while (!kstack_end(sp)) {
addr = *sp++;
/*
* If the address is either in the text segment of the
* kernel, or in the region which contains vmalloc'ed
* memory, it *may* be the address of a calling
* routine; if so, print it so that someone tracing
* down the cause of the crash will be able to figure
* out the call path that was taken.
*/
if (kernel_text_address(addr))
print_ip_sym(addr);
}
printk("\n");
}
static void perf_callchain_kernel(struct pt_regs *regs,
struct perf_callchain_entry *entry)
{
unsigned long sp, next_sp;
unsigned long next_ip;
unsigned long lr;
long level = 0;
unsigned long *fp;
lr = regs->link;
sp = regs->gpr[1];
callchain_store(entry, PERF_CONTEXT_KERNEL);
callchain_store(entry, regs->nip);
if (!validate_sp(sp, current, STACK_FRAME_OVERHEAD))
return;
for (;;) {
fp = (unsigned long *) sp;
next_sp = fp[0];
if (next_sp == sp + STACK_INT_FRAME_SIZE &&
fp[STACK_FRAME_MARKER] == STACK_FRAME_REGS_MARKER) {
/*
* This looks like an interrupt frame for an
* interrupt that occurred in the kernel
*/
regs = (struct pt_regs *)(sp + STACK_FRAME_OVERHEAD);
next_ip = regs->nip;
lr = regs->link;
level = 0;
callchain_store(entry, PERF_CONTEXT_KERNEL);
} else {
if (level == 0)
next_ip = lr;
else
next_ip = fp[STACK_FRAME_LR_SAVE];
/*
* We can't tell which of the first two addresses
* we get are valid, but we can filter out the
* obviously bogus ones here. We replace them
* with 0 rather than removing them entirely so
* that userspace can tell which is which.
*/
if ((level == 1 && next_ip == lr) ||
(level <= 1 && !kernel_text_address(next_ip)))
next_ip = 0;
++level;
}
callchain_store(entry, next_ip);
if (!valid_next_sp(next_sp, sp))
return;
sp = next_sp;
}
}
static void __jump_label_update(struct static_key *key,
struct jump_entry *entry,
struct jump_entry *stop, int enable)
{
for (; (entry < stop) &&
(entry->key == (jump_label_t)(unsigned long)key);
entry++) {
if (entry->code && kernel_text_address(entry->code))
arch_jump_label_transform(entry, enable);
}
}
static void __jump_label_update(struct jump_label_key *key,
struct jump_entry *entry, int enable)
{
for (; entry->key == (jump_label_t)(unsigned long)key; entry++) {
/*
* entry->code set to 0 invalidates module init text sections
* kernel_text_address() verifies we are not in core kernel
* init code, see jump_label_invalidate_module_init().
*/
if (entry->code && kernel_text_address(entry->code))
arch_jump_label_transform(entry, enable);
}
}
static int return_address_cb(struct stackframe *frame, void *data)
{
struct return_addr_data *r = data;
if (r->skip) {
--r->skip;
return 0;
}
if (!kernel_text_address(frame->pc))
return 0;
r->addr = frame->pc;
return 1;
}
static void __jump_label_update(struct static_key *key,
struct jump_entry *entry,
struct jump_entry *stop)
{
for (; (entry < stop) && (jump_entry_key(entry) == key); entry++) {
/*
* entry->code set to 0 invalidates module init text sections
* kernel_text_address() verifies we are not in core kernel
* init code, see jump_label_invalidate_module_init().
*/
if (entry->code && kernel_text_address(entry->code))
arch_jump_label_transform(entry, jump_label_type(entry));
}
}
static int stack_trace_cb(struct stackframe *frame, void *data)
{
struct stack_trace_data *trace_data = data;
struct stack_trace *trace = trace_data->trace;
if (trace_data->skip) {
--trace_data->skip;
return 0;
}
if (!kernel_text_address(frame->pc))
return 0;
trace->entries[trace->nr_entries++] = frame->pc;
return trace->nr_entries >= trace->max_entries;
}
/*
* Check if the target PC is within an alternative block.
*/
static bool branch_insn_requires_update(struct alt_instr *alt, unsigned long pc)
{
unsigned long replptr;
if (kernel_text_address(pc))
return 1;
replptr = (unsigned long)ALT_REPL_PTR(alt);
if (pc >= replptr && pc <= (replptr + alt->alt_len))
return 0;
/*
* Branching into *another* alternate sequence is doomed, and
* we're not even trying to fix it up.
*/
BUG();
}
void show_trace(unsigned long * stack)
{
unsigned long *startstack;
unsigned long addr;
int i;
startstack = (unsigned long *)((unsigned long)stack & ~(THREAD_SIZE - 1));
i = 1;
printk("Kernel addresses on the stack:\n");
while (stack >= startstack) {
addr = *stack--;
if (kernel_text_address(addr)) {
printk(" [<" RFMT ">] ", addr);
if ((i & 0x03) == 0)
printk("\n");
i++;
}
}
printk("\n");
}
void show_trace(unsigned long * stack)
{
int i;
unsigned long addr;
if (!stack)
stack = (unsigned long*) &stack;
printk("Call Trace: ");
i = 1;
while (((long) stack & (THREAD_SIZE-1)) != 0) {
addr = *stack++;
if (kernel_text_address(addr)) {
if (i && ((i % 6) == 0))
printk("\n ");
printk("[<%08lx>] ", addr);
i++;
}
}
printk("\n");
}
void nommu_dump_state(struct pt_regs *regs,
unsigned long ea, unsigned long vector)
{
int i;
unsigned long addr, stack = regs->sp;
printk("\n\r[nommu_dump_state] :: ea %lx, vector %lx\n\r", ea, vector);
printk("CPU #: %d\n"
" PC: %08lx SR: %08lx SP: %08lx\n",
0, regs->pc, regs->sr, regs->sp);
printk("GPR00: %08lx GPR01: %08lx GPR02: %08lx GPR03: %08lx\n",
0L, regs->gpr[1], regs->gpr[2], regs->gpr[3]);
printk("GPR04: %08lx GPR05: %08lx GPR06: %08lx GPR07: %08lx\n",
regs->gpr[4], regs->gpr[5], regs->gpr[6], regs->gpr[7]);
printk("GPR08: %08lx GPR09: %08lx GPR10: %08lx GPR11: %08lx\n",
regs->gpr[8], regs->gpr[9], regs->gpr[10], regs->gpr[11]);
printk("GPR12: %08lx GPR13: %08lx GPR14: %08lx GPR15: %08lx\n",
regs->gpr[12], regs->gpr[13], regs->gpr[14], regs->gpr[15]);
printk("GPR16: %08lx GPR17: %08lx GPR18: %08lx GPR19: %08lx\n",
regs->gpr[16], regs->gpr[17], regs->gpr[18], regs->gpr[19]);
printk("GPR20: %08lx GPR21: %08lx GPR22: %08lx GPR23: %08lx\n",
regs->gpr[20], regs->gpr[21], regs->gpr[22], regs->gpr[23]);
printk("GPR24: %08lx GPR25: %08lx GPR26: %08lx GPR27: %08lx\n",
regs->gpr[24], regs->gpr[25], regs->gpr[26], regs->gpr[27]);
printk("GPR28: %08lx GPR29: %08lx GPR30: %08lx GPR31: %08lx\n",
regs->gpr[28], regs->gpr[29], regs->gpr[30], regs->gpr[31]);
printk(" RES: %08lx oGPR11: %08lx\n",
regs->gpr[11], regs->orig_gpr11);
printk("Process %s (pid: %d, stackpage=%08lx)\n",
((struct task_struct *)(__pa(current)))->comm,
((struct task_struct *)(__pa(current)))->pid,
(unsigned long)current);
printk("\nStack: ");
printk("Stack dump [0x%08lx]:\n", (unsigned long)stack);
for (i = 0; i < kstack_depth_to_print; i++) {
if (((long)stack & (THREAD_SIZE - 1)) == 0)
break;
stack++;
printk("%lx :: sp + %02d: 0x%08lx\n", stack, i * 4,
*((unsigned long *)(__pa(stack))));
}
printk("\n");
printk("Call Trace: ");
i = 1;
while (((long)stack & (THREAD_SIZE - 1)) != 0) {
addr = *((unsigned long *)__pa(stack));
stack++;
if (kernel_text_address(addr)) {
if (i && ((i % 6) == 0))
printk("\n ");
printk(" [<%08lx>]", addr);
i++;
}
}
printk("\n");
printk("\nCode: ");
for (i = -24; i < 24; i++) {
unsigned char c;
c = ((unsigned char *)(__pa(regs->pc)))[i];
if (i == 0)
printk("(%02x) ", c);
else
printk("%02x ", c);
}
printk("\n");
}
