static void boot_delay_msec(void)
{
unsigned long long k;
unsigned long timeout;
if (boot_delay == 0 || system_state != SYSTEM_BOOTING)
return;
k = (unsigned long long)loops_per_msec * boot_delay;
timeout = jiffies + msecs_to_jiffies(boot_delay);
while (k) {
k--;
cpu_relax();
/*
* use (volatile) jiffies to prevent
* compiler reduction; loop termination via jiffies
* is secondary and may or may not happen.
*/
if (time_after(jiffies, timeout))
break;
touch_nmi_watchdog();
}
}
static int
kdb_bt1(struct task_struct *p, unsigned long mask,
int argcount, int btaprompt)
{
char buffer[2];
if (kdb_getarea(buffer[0], (unsigned long)p) ||
kdb_getarea(buffer[0], (unsigned long)(p+1)-1))
return KDB_BADADDR;
if (!kdb_task_state(p, mask))
return 0;
kdb_printf("Stack traceback for pid %d\n", p->pid);
kdb_ps1(p);
kdb_show_stack(p, NULL);
if (btaprompt) {
kdb_getstr(buffer, sizeof(buffer),
"Enter <q> to end, <cr> to continue:");
if (buffer[0] == 'q') {
kdb_printf("\n");
return 1;
}
}
touch_nmi_watchdog();
return 0;
}
void show_stack(struct task_struct *tsk, unsigned long * rsp)
{
unsigned long *stack;
int i;
const int cpu = safe_smp_processor_id();
unsigned long *irqstack_end = (unsigned long *) (cpu_pda[cpu].irqstackptr);
unsigned long *irqstack = (unsigned long *) (cpu_pda[cpu].irqstackptr - IRQSTACKSIZE);
// debugging aid: "show_stack(NULL, NULL);" prints the
// back trace for this cpu.
if (rsp == NULL) {
if (tsk)
rsp = (unsigned long *)tsk->thread.rsp;
else
rsp = (unsigned long *)&rsp;
}
stack = rsp;
for(i=0; i < kstack_depth_to_print; i++) {
if (stack >= irqstack && stack <= irqstack_end) {
if (stack == irqstack_end) {
stack = (unsigned long *) (irqstack_end[-1]);
printk(" <EOI> ");
}
} else {
if (((long) stack & (THREAD_SIZE-1)) == 0)
break;
}
if (i && ((i % 4) == 0))
printk("\n ");
printk("%016lx ", *stack++);
touch_nmi_watchdog();
}
show_trace((unsigned long *)rsp);
}
NORET_TYPE void panic(const char * fmt, ...)
{
long i;
static char buf[1024];
va_list args;
#if defined(CONFIG_ARCH_S390)
unsigned long caller = (unsigned long) __builtin_return_address(0);
#endif
bust_spinlocks(1);
va_start(args, fmt);
vsnprintf(buf, sizeof(buf), fmt, args);
va_end(args);
printk(KERN_EMERG "Kernel panic - not syncing: %s\n",buf);
bust_spinlocks(0);
#ifdef CONFIG_SMP
smp_send_stop();
#endif
notifier_call_chain(&panic_notifier_list, 0, buf);
if (!panic_blink)
panic_blink = no_blink;
if (panic_timeout > 0)
{
/*
* Delay timeout seconds before rebooting the machine.
* We can't use the "normal" timers since we just panicked..
*/
printk(KERN_EMERG "Rebooting in %d seconds..",panic_timeout);
for (i = 0; i < panic_timeout*1000; ) {
touch_nmi_watchdog();
i += panic_blink(i);
mdelay(1);
i++;
}
/*
* Should we run the reboot notifier. For the moment Im
* choosing not too. It might crash, be corrupt or do
* more harm than good for other reasons.
*/
machine_restart(NULL);
}
#ifdef __sparc__
{
extern int stop_a_enabled;
/* Make sure the user can actually press Stop-A (L1-A) */
stop_a_enabled = 1;
printk(KERN_EMERG "Press Stop-A (L1-A) to return to the boot prom\n");
}
#endif
#if defined(CONFIG_ARCH_S390)
disabled_wait(caller);
#endif
local_irq_enable();
for (i = 0;;) {
i += panic_blink(i);
mdelay(1);
i++;
}
}
/*
* Print one address/symbol entries per line.
*/
static void print_trace_address(void *data, unsigned long addr, int reliable)
{
touch_nmi_watchdog();
printk(data);
printk_address(addr, reliable);
}
/**
* panic - halt the system
* @fmt: The text string to print
*
* Display a message, then perform cleanups.
*
* This function never returns.
*/
void panic(const char *fmt, ...)
{
static char buf[1024];
va_list args;
long i, i_next = 0, len;
int state = 0;
int old_cpu, this_cpu;
bool _crash_kexec_post_notifiers = crash_kexec_post_notifiers;
/*
* Disable local interrupts. This will prevent panic_smp_self_stop
* from deadlocking the first cpu that invokes the panic, since
* there is nothing to prevent an interrupt handler (that runs
* after setting panic_cpu) from invoking panic() again.
*/
local_irq_disable();
/*
* It's possible to come here directly from a panic-assertion and
* not have preempt disabled. Some functions called from here want
* preempt to be disabled. No point enabling it later though...
*
* Only one CPU is allowed to execute the panic code from here. For
* multiple parallel invocations of panic, all other CPUs either
* stop themself or will wait until they are stopped by the 1st CPU
* with smp_send_stop().
*
* `old_cpu == PANIC_CPU_INVALID' means this is the 1st CPU which
* comes here, so go ahead.
* `old_cpu == this_cpu' means we came from nmi_panic() which sets
* panic_cpu to this CPU. In this case, this is also the 1st CPU.
*/
this_cpu = raw_smp_processor_id();
old_cpu = atomic_cmpxchg(&panic_cpu, PANIC_CPU_INVALID, this_cpu);
if (old_cpu != PANIC_CPU_INVALID && old_cpu != this_cpu)
panic_smp_self_stop();
console_verbose();
bust_spinlocks(1);
va_start(args, fmt);
len = vscnprintf(buf, sizeof(buf), fmt, args);
va_end(args);
if (len && buf[len - 1] == '\n')
buf[len - 1] = '\0';
pr_emerg("Kernel panic - not syncing: %s\n", buf);
#ifdef CONFIG_DEBUG_BUGVERBOSE
/*
* Avoid nested stack-dumping if a panic occurs during oops processing
*/
if (!test_taint(TAINT_DIE) && oops_in_progress <= 1)
dump_stack();
#endif
/*
* If we have crashed and we have a crash kernel loaded let it handle
* everything else.
* If we want to run this after calling panic_notifiers, pass
* the "crash_kexec_post_notifiers" option to the kernel.
*
* Bypass the panic_cpu check and call __crash_kexec directly.
*/
if (!_crash_kexec_post_notifiers) {
printk_safe_flush_on_panic();
__crash_kexec(NULL);
/*
* Note smp_send_stop is the usual smp shutdown function, which
* unfortunately means it may not be hardened to work in a
* panic situation.
*/
smp_send_stop();
} else {
/*
* If we want to do crash dump after notifier calls and
* kmsg_dump, we will need architecture dependent extra
* works in addition to stopping other CPUs.
*/
crash_smp_send_stop();
}
/*
* Run any panic handlers, including those that might need to
* add information to the kmsg dump output.
*/
atomic_notifier_call_chain(&panic_notifier_list, 0, buf);
/* Call flush even twice. It tries harder with a single online CPU */
printk_safe_flush_on_panic();
kmsg_dump(KMSG_DUMP_PANIC);
/*
* If you doubt kdump always works fine in any situation,
* "crash_kexec_post_notifiers" offers you a chance to run
* panic_notifiers and dumping kmsg before kdump.
* Note: since some panic_notifiers can make crashed kernel
* more unstable, it can increase risks of the kdump failure too.
*
* Bypass the panic_cpu check and call __crash_kexec directly.
*/
if (_crash_kexec_post_notifiers)
__crash_kexec(NULL);
#ifdef CONFIG_VT
unblank_screen();
#endif
console_unblank();
/*
* We may have ended up stopping the CPU holding the lock (in
* smp_send_stop()) while still having some valuable data in the console
* buffer. Try to acquire the lock then release it regardless of the
* result. The release will also print the buffers out. Locks debug
* should be disabled to avoid reporting bad unlock balance when
* panic() is not being callled from OOPS.
*/
debug_locks_off();
console_flush_on_panic();
panic_print_sys_info();
if (!panic_blink)
panic_blink = no_blink;
if (panic_timeout > 0) {
/*
* Delay timeout seconds before rebooting the machine.
* We can't use the "normal" timers since we just panicked.
*/
pr_emerg("Rebooting in %d seconds..\n", panic_timeout);
for (i = 0; i < panic_timeout * 1000; i += PANIC_TIMER_STEP) {
touch_nmi_watchdog();
if (i >= i_next) {
i += panic_blink(state ^= 1);
i_next = i + 3600 / PANIC_BLINK_SPD;
}
mdelay(PANIC_TIMER_STEP);
}
}
if (panic_timeout != 0) {
/*
* This will not be a clean reboot, with everything
* shutting down. But if there is a chance of
* rebooting the system it will be rebooted.
*/
emergency_restart();
}
#ifdef __sparc__
{
extern int stop_a_enabled;
/* Make sure the user can actually press Stop-A (L1-A) */
stop_a_enabled = 1;
pr_emerg("Press Stop-A (L1-A) from sun keyboard or send break\n"
"twice on console to return to the boot prom\n");
}
#endif
#if defined(CONFIG_S390)
{
unsigned long caller;
caller = (unsigned long)__builtin_return_address(0);
disabled_wait(caller);
}
#endif
pr_emerg("---[ end Kernel panic - not syncing: %s ]---\n", buf);
local_irq_enable();
for (i = 0; ; i += PANIC_TIMER_STEP) {
touch_softlockup_watchdog();
if (i >= i_next) {
i += panic_blink(state ^= 1);
i_next = i + 3600 / PANIC_BLINK_SPD;
}
mdelay(PANIC_TIMER_STEP);
}
}
/*
* Print one address/symbol entries per line.
*/
static int print_trace_address(void *data, unsigned long addr, int reliable)
{
touch_nmi_watchdog();
printk_stack_address(addr, reliable, data);
return 0;
}
NORET_TYPE void panic(const char * fmt, ...)
{
long i;
static char buf[1024];
va_list args;
#if defined(CONFIG_S390)
unsigned long caller = (unsigned long) __builtin_return_address(0);
#endif
/*
* It's possible to come here directly from a panic-assertion and not
* have preempt disabled. Some functions called from here want
* preempt to be disabled. No point enabling it later though...
*/
preempt_disable();
bust_spinlocks(1);
va_start(args, fmt);
vsnprintf(buf, sizeof(buf), fmt, args);
va_end(args);
printk(KERN_EMERG "Kernel panic - not syncing: %s\n",buf);
bust_spinlocks(0);
/*
* If we have crashed and we have a crash kernel loaded let it handle
* everything else.
* Do we want to call this before we try to display a message?
*/
crash_kexec(NULL);
#ifdef CONFIG_SMP
/*
* Note smp_send_stop is the usual smp shutdown function, which
* unfortunately means it may not be hardened to work in a panic
* situation.
*/
smp_send_stop();
#endif
atomic_notifier_call_chain(&panic_notifier_list, 0, buf);
if (!panic_blink)
panic_blink = no_blink;
if (panic_timeout > 0) {
/*
* Delay timeout seconds before rebooting the machine.
* We can't use the "normal" timers since we just panicked..
*/
printk(KERN_EMERG "Rebooting in %d seconds..",panic_timeout);
for (i = 0; i < panic_timeout*1000; ) {
touch_nmi_watchdog();
i += panic_blink(i);
mdelay(1);
i++;
}
/* This will not be a clean reboot, with everything
* shutting down. But if there is a chance of
* rebooting the system it will be rebooted.
*/
emergency_restart();
}
#ifdef __sparc__
{
extern int stop_a_enabled;
/* Make sure the user can actually press Stop-A (L1-A) */
stop_a_enabled = 1;
printk(KERN_EMERG "Press Stop-A (L1-A) to return to the boot prom\n");
}
#endif
#if defined(CONFIG_S390)
disabled_wait(caller);
#endif
local_irq_enable();
for (i = 0;;) {
touch_softlockup_watchdog();
i += panic_blink(i);
mdelay(1);
i++;
}
}
static void enable_ioapic_nmi_watchdog(void)
{
on_each_cpu(enable_ioapic_nmi_watchdog_single, NULL, 1);
touch_nmi_watchdog();
}
/*
* Enable timer based NMIs on all CPUs:
*/
void acpi_nmi_enable(void)
{
if (atomic_read(&nmi_watchdog_active) == 0)
on_each_cpu(__acpi_nmi_enable, NULL, 0, 1);
touch_nmi_watchdog();
}
static int sec_debug_panic_handler(struct notifier_block *nb,
unsigned long l, void *buf)
{
unsigned int len, i;
#if defined(CONFIG_FB_MSM_MDSS_SAMSUNG)
samsung_mdss_image_dump();
#endif
emerg_pet_watchdog();//CTC-should be modify
sec_debug_set_upload_magic(SECDEBUG_MODE);
len = strnlen(buf, 80);
if (!strncmp(buf, "User Fault", len))
sec_debug_set_upload_cause(UPLOAD_CAUSE_USER_FAULT);
else if (!strncmp(buf, "Crash Key", len))
sec_debug_set_upload_cause(UPLOAD_CAUSE_FORCED_UPLOAD);
else if (!strncmp(buf, "CP Crash", len))
sec_debug_set_upload_cause(UPLOAD_CAUSE_CP_ERROR_FATAL);
else if (!strncmp(buf, "MDM Crash", len))
sec_debug_set_upload_cause(UPLOAD_CAUSE_MDM_ERROR_FATAL);
else if (strnstr(buf, "external_modem", len) != NULL)
sec_debug_set_upload_cause(UPLOAD_CAUSE_MDM_ERROR_FATAL);
else if (strnstr(buf, "esoc0 crashed", len) != NULL)
sec_debug_set_upload_cause(UPLOAD_CAUSE_MDM_ERROR_FATAL);
else if (strnstr(buf, "modem", len) != NULL)
sec_debug_set_upload_cause(UPLOAD_CAUSE_MODEM_RST_ERR);
else if (strnstr(buf, "riva", len) != NULL)
sec_debug_set_upload_cause(UPLOAD_CAUSE_RIVA_RST_ERR);
else if (strnstr(buf, "lpass", len) != NULL)
sec_debug_set_upload_cause(UPLOAD_CAUSE_LPASS_RST_ERR);
else if (strnstr(buf, "dsps", len) != NULL)
sec_debug_set_upload_cause(UPLOAD_CAUSE_DSPS_RST_ERR);
else if (!strnicmp(buf, "subsys", len))
sec_debug_set_upload_cause(UPLOAD_CAUSE_PERIPHERAL_ERR);
else
sec_debug_set_upload_cause(UPLOAD_CAUSE_KERNEL_PANIC);
if (!enable) {
#ifdef CONFIG_SEC_DEBUG_LOW_LOG
sec_debug_hw_reset();
#endif
return -EPERM;
}
/* enable after SSR feature
ssr_panic_handler_for_sec_dbg();
*/
for (i = 0; i < 10; i++)
{
touch_nmi_watchdog();
mdelay(100);
}
/* save context here so that function call after this point doesn't
* corrupt stacks below the saved sp */
sec_debug_save_context();
sec_debug_hw_reset();
return 0;
}
NORET_TYPE void panic(const char * fmt, ...)
{
long i;
static char buf[1024];
va_list args;
#if defined(CONFIG_S390)
unsigned long caller = (unsigned long) __builtin_return_address(0);
#endif
int count,chr_count;
/*
* It's possible to come here directly from a panic-assertion and not
* have preempt disabled. Some functions called from here want
* preempt to be disabled. No point enabling it later though...
*/
preempt_disable();
bust_spinlocks(1);
va_start(args, fmt);
vsnprintf(buf, sizeof(buf), fmt, args);
va_end(args);
printk(KERN_EMERG "Kernel panic - not syncing: %s\n",buf);
bust_spinlocks(0);
#ifdef CONFIG_KERNEL_PANIC_DUMP
PANIC_Current += sprintf(PANIC_Current,"Kernel panic - not syncing: %s\n",buf);
if (!multiple_panic) {
multiple_panic++;
printk(KERN_EMERG "PANIC_DUMP Test : \n");
count = PANIC_Current - PANIC_Base;
printk("count : %d\n",count);
chr_count = 0;
while(count)
{
memset(buf,0x0,1024);
if(count > 1024)
{
memcpy(buf,PANIC_Base+chr_count,1024);
printk("%s",buf);
chr_count += 1024;
count -= 1024;
}
else
{
memcpy(buf,PANIC_Base+chr_count,count);
printk("%s",buf);
chr_count += count;
count -= count;
}
}
{
mm_segment_t old_fs;
struct file *filp;
int writelen;
loff_t pos =0;
fl_owner_t id = current->files;
preempt_enable();
old_fs = get_fs();
set_fs(KERNEL_DS);
struct timeval val;
struct tm *ptm,ptmTemp;
char dt[35];
do_gettimeofday(&val);
ptm = localtime_r(&val.tv_sec,&ptmTemp);
memset(dt , 0x00 , sizeof(dt));
// format : YYMMDDhhmm
sprintf(dt, "/data/KERNEL_PANIC%04d%02d%02d%02d%02d.txt"
, ptm->tm_year+1900 , ptm->tm_mon+1 , ptm->tm_mday
, ptm->tm_hour, ptm->tm_min);
printk("Panic log file is %s \n",dt);
count = PANIC_Current - PANIC_Base;
chr_count = 0;
filp = filp_open(dt,O_CREAT|O_WRONLY,0666);
if(filp<0)
printk("Sorry. Can't creat panic file\n");
else {
// vfs_write(filp, PANIC_Base, strlen(PANIC_Base),
while(count) {
memset(buf,0x0,1024);
if(count > 1024) {
memcpy(buf,PANIC_Base+chr_count,1024);
writelen = filp->f_op->write(filp,buf,1024,&filp->f_pos);
if(writelen == 0)
printk("Write Error!!\n");
else
filp->f_op->flush(filp,id);
chr_count += 1024;
count -= 1024;
} else {
memcpy(buf,PANIC_Base+chr_count,count);
writelen = filp->f_op->write(filp,buf,count,&filp->f_pos);
if(writelen == 0)
printk("Write Error\n");
else
filp->f_op->flush(filp,id);
chr_count += count;
count -= count;
}
}
}
set_fs(old_fs);
preempt_disable();
}
count = PANIC_Current - PANIC_Base;
printk("\nPanic Dump END, panic message size is : %d\n",count);
}
else {
#if 0
/* Reset Target */
#else
while (1);
#endif
}
#endif
/*
* If we have crashed and we have a crash kernel loaded let it handle
* everything else.
* Do we want to call this before we try to display a message?
*/
crash_kexec(NULL);
#ifdef CONFIG_SMP
/*
* Note smp_send_stop is the usual smp shutdown function, which
* unfortunately means it may not be hardened to work in a panic
* situation.
*/
smp_send_stop();
#endif
atomic_notifier_call_chain(&panic_notifier_list, 0, buf);
if (!panic_blink)
panic_blink = no_blink;
if (panic_timeout > 0) {
/*
* Delay timeout seconds before rebooting the machine.
* We can't use the "normal" timers since we just panicked..
*/
printk(KERN_EMERG "Rebooting in %d seconds..",panic_timeout);
for (i = 0; i < panic_timeout*1000; ) {
touch_nmi_watchdog();
i += panic_blink(i);
mdelay(1);
i++;
}
/* This will not be a clean reboot, with everything
* shutting down. But if there is a chance of
* rebooting the system it will be rebooted.
*/
emergency_restart();
}
#ifdef __sparc__
{
extern int stop_a_enabled;
/* Make sure the user can actually press Stop-A (L1-A) */
stop_a_enabled = 1;
printk(KERN_EMERG "Press Stop-A (L1-A) to return to the boot prom\n");
}
#endif
#if defined(CONFIG_S390)
disabled_wait(caller);
#endif
local_irq_enable();
for (i = 0;;) {
touch_softlockup_watchdog();
i += panic_blink(i);
mdelay(1);
i++;
}
}
static void printk_stack_address(unsigned long address, int reliable,
char *log_lvl)
{
touch_nmi_watchdog();
printk("%s %s%pB\n", log_lvl, reliable ? "" : "? ", (void *)address);
}