static void panic_blink_one_second(void)
{
static long i = 0, end;
if (panic_blink) {
end = i + MSEC_PER_SEC;
while (i < end) {
i += panic_blink(i);
mdelay(1);
i++;
}
} else {
/*
* When running under a hypervisor a small mdelay may get
* rounded up to the hypervisor timeslice. For example, with
* a 1ms in 10ms hypervisor timeslice we might inflate a
* mdelay(1) loop by 10x.
*
* If we have nothing to blink, spin on 1 second calls to
* mdelay to avoid this.
*/
mdelay(MSEC_PER_SEC);
}
}
void prefetch_abort (void)
{
register volatile char *r_14 asm ("r14");
long prev_pc = (long) r_14 - 4;
uart0_write ("prefetch abort!\r\n");
uart0_write_hex (prev_pc);
// XXX: register dump
panic_blink(2);
}
void data_abort (void)
{
register volatile char *r_14 asm ("r14");
long prev_pc = (long) r_14 - 8;
uart0_write ("data abort!\r\n");
uart0_write_hex (prev_pc);
// XXX: register dump
panic_blink(3);
}
void data_abort (long r_0, long r_1, long r_2, long r_3,
long spsr,
long r_4, long r_5, long r_6, long r_7,
long r_8, long r_9, long r_10, long r_11,
long r_12, long prev_pc)
{
uart0_write ("data abort!\r\n");
DUMP_REGS()
panic_blink(1500);
}
void prefetch_abort (long r_0, long r_1, long r_2, long r_3,
long spsr,
long r_4, long r_5, long r_6, long r_7,
long r_8, long r_9, long r_10, long r_11,
long r_12, long prev_pc)
{
uart0_write ("prefetch abort!\r\n");
DUMP_REGS()
panic_blink(1000);
}
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++;
}
}
/**
* 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);
}
}
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++;
}
}
NORET_TYPE void panic(const char * fmt, ...)
{
static char buf[1024];
va_list args;
#if defined(CONFIG_ARCH_S390)
unsigned long caller = (unsigned long) __builtin_return_address(0);
#endif
#ifdef CONFIG_VT
disable_console_blank();
#endif
machine_paniced = 1;
bust_spinlocks(1);
va_start(args, fmt);
vsnprintf(buf, sizeof(buf), fmt, args);
va_end(args);
printk(KERN_EMERG "Kernel panic: %s\n",buf);
if (in_interrupt())
printk(KERN_EMERG "In interrupt handler - not syncing\n");
else if (!current->pid)
printk(KERN_EMERG "In idle task - not syncing\n");
else
sys_sync();
bust_spinlocks(0);
#ifdef CONFIG_SMP
smp_send_stop();
#endif
notifier_call_chain(&panic_notifier_list, 0, NULL);
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);
mdelay(panic_timeout*1000);
/*
* 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 L1-A */
stop_a_enabled = 1;
printk("Press L1-A to return to the boot prom\n");
}
#endif
#if defined(CONFIG_ARCH_S390)
disabled_wait(caller);
#endif
sti();
for(;;) {
#if defined(CONFIG_X86) && defined(CONFIG_VT)
extern void panic_blink(void);
panic_blink();
#endif
CHECK_EMERGENCY_SYNC
}
}
void undefined (void)
{
panic_blink(1);
}
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++;
}
}
void undefined (void)
{
panic_blink(500);
}
