Release 4.7 kernel/panic.c

Directory: kernel
/*
 *  linux/kernel/panic.c
 *
 *  Copyright (C) 1991, 1992  Linus Torvalds
 */

/*
 * This function is used through-out the kernel (including mm and fs)
 * to indicate a major problem.
 */
#include <linux/debug_locks.h>
#include <linux/interrupt.h>
#include <linux/kmsg_dump.h>
#include <linux/kallsyms.h>
#include <linux/notifier.h>
#include <linux/module.h>
#include <linux/random.h>
#include <linux/ftrace.h>
#include <linux/reboot.h>
#include <linux/delay.h>
#include <linux/kexec.h>
#include <linux/sched.h>
#include <linux/sysrq.h>
#include <linux/init.h>
#include <linux/nmi.h>
#include <linux/console.h>
#include <linux/bug.h>


#define PANIC_TIMER_STEP 100

#define PANIC_BLINK_SPD 18


int panic_on_oops = CONFIG_PANIC_ON_OOPS_VALUE;

static unsigned long tainted_mask;

static int pause_on_oops;

static int pause_on_oops_flag;
static DEFINE_SPINLOCK(pause_on_oops_lock);

bool crash_kexec_post_notifiers;

int panic_on_warn __read_mostly;


int panic_timeout = CONFIG_PANIC_TIMEOUT;

EXPORT_SYMBOL_GPL(panic_timeout);


ATOMIC_NOTIFIER_HEAD(panic_notifier_list);


EXPORT_SYMBOL(panic_notifier_list);



static long no_blink(int state)
{
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
tamuki shoichi tamuki shoichi 12 100.00% 1 100.00%
Total 12 100.00% 1 100.00%

/* Returns how long it waited in ms */

long (*panic_blink)(int state);

EXPORT_SYMBOL(panic_blink);

/*
 * Stop ourself in panic -- architecture code may override this
 */


void __weak panic_smp_self_stop(void)
{
	while (1)
		cpu_relax();
}

Contributors
Person Tokens Prop Commits CommitProp
michael holzheu michael holzheu 15 100.00% 1 100.00%
Total 15 100.00% 1 100.00%

/*
 * Stop ourselves in NMI context if another CPU has already panicked. Arch code
 * may override this to prepare for crash dumping, e.g. save regs info.
 */


void __weak nmi_panic_self_stop(struct pt_regs *regs)
{
	panic_smp_self_stop();
}

Contributors
Person Tokens Prop Commits CommitProp
hidehiro kawai hidehiro kawai 14 100.00% 1 100.00%
Total 14 100.00% 1 100.00%


atomic_t panic_cpu = ATOMIC_INIT(PANIC_CPU_INVALID);

/*
 * A variant of panic() called from NMI context. We return if we've already
 * panicked on this CPU. If another CPU already panicked, loop in
 * nmi_panic_self_stop() which can provide architecture dependent code such
 * as saving register state for crash dump.
 */


void nmi_panic(struct pt_regs *regs, const char *msg)
{
	int old_cpu, cpu;

	cpu = raw_smp_processor_id();
	old_cpu = atomic_cmpxchg(&panic_cpu, PANIC_CPU_INVALID, cpu);

	if (old_cpu == PANIC_CPU_INVALID)
		panic("%s", msg);
	else if (old_cpu != cpu)
		nmi_panic_self_stop(regs);
}
Contributors
Person Tokens Prop Commits CommitProp
hidehiro kawai hidehiro kawai 62 100.00% 1 100.00%
Total 62 100.00% 1 100.00%


EXPORT_SYMBOL(nmi_panic);

/**
 *      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;
	int state = 0;
	int old_cpu, this_cpu;

	/*
         * 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);
	vsnprintf(buf, sizeof(buf), fmt, args);
	va_end(args);
	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_nmi_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();

	/*
         * 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_nmi_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);

	bust_spinlocks(0);

	/*
         * 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();

	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..", 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) 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);
	}
}

Contributors
Person Tokens Prop Commits CommitProp
pre-git pre-git 104 26.46% 8 18.18%
tamuki shoichi tamuki shoichi 91 23.16% 1 2.27%
hidehiro kawai hidehiro kawai 34 8.65% 2 4.55%
ingo molnar ingo molnar 29 7.38% 3 6.82%
andrew morton andrew morton 22 5.60% 2 4.55%
andi kleen andi kleen 10 2.54% 2 4.55%
fabian frederick fabian frederick 10 2.54% 1 2.27%
masami hiramatsu masami hiramatsu 9 2.29% 1 2.27%
petr mladek petr mladek 9 2.29% 1 2.27%
hugh dickins hugh dickins 8 2.04% 1 2.27%
jason wessel jason wessel 7 1.78% 1 2.27%
vitaly kuznetsov vitaly kuznetsov 6 1.53% 2 4.55%
kees cook kees cook 6 1.53% 1 2.27%
linus torvalds linus torvalds 5 1.27% 1 2.27%
michael holzheu michael holzheu 5 1.27% 1 2.27%
eric w. biederman eric w. biederman 5 1.27% 2 4.55%
aaro koskinen aaro koskinen 5 1.27% 1 2.27%
daisuke hatayama daisuke hatayama 4 1.02% 1 2.27%
seiji aguchi seiji aguchi 4 1.02% 1 2.27%
anton blanchard anton blanchard 4 1.02% 2 4.55%
alexander nyberg alexander nyberg 3 0.76% 1 2.27%
vikram mulukutla vikram mulukutla 3 0.76% 1 2.27%
jan beulich jan beulich 3 0.76% 1 2.27%
tom 'spot' callaway tom 'spot' callaway 2 0.51% 1 2.27%
jeff dike jeff dike 1 0.25% 1 2.27%
christian borntrager christian borntrager 1 0.25% 1 2.27%
alan stern alan stern 1 0.25% 1 2.27%
martin schwidefsky martin schwidefsky 1 0.25% 1 2.27%
tejun heo tejun heo 1 0.25% 1 2.27%
Total 393 100.00% 44 100.00%


EXPORT_SYMBOL(panic);



struct tnt {
	
u8	bit;
	
char	true;
	
char	false;
};


static const struct tnt tnts[] = {
	{ TAINT_PROPRIETARY_MODULE,	'P', 'G' },
	{ TAINT_FORCED_MODULE,		'F', ' ' },
	{ TAINT_CPU_OUT_OF_SPEC,	'S', ' ' },
	{ TAINT_FORCED_RMMOD,		'R', ' ' },
	{ TAINT_MACHINE_CHECK,		'M', ' ' },
	{ TAINT_BAD_PAGE,		'B', ' ' },
	{ TAINT_USER,			'U', ' ' },
	{ TAINT_DIE,			'D', ' ' },
	{ TAINT_OVERRIDDEN_ACPI_TABLE,	'A', ' ' },
	{ TAINT_WARN,			'W', ' ' },
	{ TAINT_CRAP,			'C', ' ' },
	{ TAINT_FIRMWARE_WORKAROUND,	'I', ' ' },
	{ TAINT_OOT_MODULE,		'O', ' ' },
	{ TAINT_UNSIGNED_MODULE,	'E', ' ' },
	{ TAINT_SOFTLOCKUP,		'L', ' ' },
	{ TAINT_LIVEPATCH,		'K', ' ' },
};

/**
 *      print_tainted - return a string to represent the kernel taint state.
 *
 *  'P' - Proprietary module has been loaded.
 *  'F' - Module has been forcibly loaded.
 *  'S' - SMP with CPUs not designed for SMP.
 *  'R' - User forced a module unload.
 *  'M' - System experienced a machine check exception.
 *  'B' - System has hit bad_page.
 *  'U' - Userspace-defined naughtiness.
 *  'D' - Kernel has oopsed before
 *  'A' - ACPI table overridden.
 *  'W' - Taint on warning.
 *  'C' - modules from drivers/staging are loaded.
 *  'I' - Working around severe firmware bug.
 *  'O' - Out-of-tree module has been loaded.
 *  'E' - Unsigned module has been loaded.
 *  'L' - A soft lockup has previously occurred.
 *  'K' - Kernel has been live patched.
 *
 *      The string is overwritten by the next call to print_tainted().
 */


const char *print_tainted(void)
{
	static char buf[ARRAY_SIZE(tnts) + sizeof("Tainted: ")];

	if (tainted_mask) {
		char *s;
		int i;

		s = buf + sprintf(buf, "Tainted: ");
		for (i = 0; i < ARRAY_SIZE(tnts); i++) {
			const struct tnt *t = &tnts[i];
			*s++ = test_bit(t->bit, &tainted_mask) ?
					t->true : t->false;
		}
		*s = 0;
	} else
		snprintf(buf, sizeof(buf), "Not tainted");

	return buf;
}

Contributors
Person Tokens Prop Commits CommitProp
andi kleen andi kleen 101 83.47% 1 50.00%
linus torvalds linus torvalds 20 16.53% 1 50.00%
Total 121 100.00% 2 100.00%



int test_taint(unsigned flag)
{
	return test_bit(flag, &tainted_mask);
}
Contributors
Person Tokens Prop Commits CommitProp
andi kleen andi kleen 17 100.00% 2 100.00%
Total 17 100.00% 2 100.00%


EXPORT_SYMBOL(test_taint);



unsigned long get_taint(void)
{
	return tainted_mask;
}

Contributors
Person Tokens Prop Commits CommitProp
andi kleen andi kleen 8 72.73% 1 50.00%
andrew morton andrew morton 3 27.27% 1 50.00%
Total 11 100.00% 2 100.00%

/**
 * add_taint: add a taint flag if not already set.
 * @flag: one of the TAINT_* constants.
 * @lockdep_ok: whether lock debugging is still OK.
 *
 * If something bad has gone wrong, you'll want @lockdebug_ok = false, but for
 * some notewortht-but-not-corrupting cases, it can be set to true.
 */


void add_taint(unsigned flag, enum lockdep_ok lockdep_ok)
{
	if (lockdep_ok == LOCKDEP_NOW_UNRELIABLE && __debug_locks_off())
		pr_warn("Disabling lock debugging due to kernel taint\n");

	set_bit(flag, &tainted_mask);
}
Contributors
Person Tokens Prop Commits CommitProp
andi kleen andi kleen 11 32.35% 2 22.22%
rusty russell rusty russell 8 23.53% 1 11.11%
frederic weisbecker frederic weisbecker 5 14.71% 1 11.11%
andrew morton andrew morton 5 14.71% 1 11.11%
peter zijlstra peter zijlstra 2 5.88% 1 11.11%
ingo molnar ingo molnar 1 2.94% 1 11.11%
arjan van de ven arjan van de ven 1 2.94% 1 11.11%
fabian frederick fabian frederick 1 2.94% 1 11.11%
Total 34 100.00% 9 100.00%


EXPORT_SYMBOL(add_taint);



static void spin_msec(int msecs)
{
	int i;

	for (i = 0; i < msecs; i++) {
		touch_nmi_watchdog();
		mdelay(1);
	}
}

Contributors
Person Tokens Prop Commits CommitProp
andrew morton andrew morton 35 100.00% 1 100.00%
Total 35 100.00% 1 100.00%

/*
 * It just happens that oops_enter() and oops_exit() are identically
 * implemented...
 */


static void do_oops_enter_exit(void)
{
	unsigned long flags;
	static int spin_counter;

	if (!pause_on_oops)
		return;

	spin_lock_irqsave(&pause_on_oops_lock, flags);
	if (pause_on_oops_flag == 0) {
		/* This CPU may now print the oops message */
		pause_on_oops_flag = 1;
	} else {
		/* We need to stall this CPU */
		if (!spin_counter) {
			/* This CPU gets to do the counting */
			spin_counter = pause_on_oops;
			do {
				spin_unlock(&pause_on_oops_lock);
				spin_msec(MSEC_PER_SEC);
				spin_lock(&pause_on_oops_lock);
			} while (--spin_counter);
			pause_on_oops_flag = 0;
		} else {
			/* This CPU waits for a different one */
			while (spin_counter) {
				spin_unlock(&pause_on_oops_lock);
				spin_msec(1);
				spin_lock(&pause_on_oops_lock);
			}
		}
	}
	spin_unlock_irqrestore(&pause_on_oops_lock, flags);
}

Contributors
Person Tokens Prop Commits CommitProp
andrew morton andrew morton 124 100.00% 1 100.00%
Total 124 100.00% 1 100.00%

/*
 * Return true if the calling CPU is allowed to print oops-related info.
 * This is a bit racy..
 */


int oops_may_print(void)
{
	return pause_on_oops_flag == 0;
}

Contributors
Person Tokens Prop Commits CommitProp
andrew morton andrew morton 12 100.00% 1 100.00%
Total 12 100.00% 1 100.00%

/*
 * Called when the architecture enters its oops handler, before it prints
 * anything.  If this is the first CPU to oops, and it's oopsing the first
 * time then let it proceed.
 *
 * This is all enabled by the pause_on_oops kernel boot option.  We do all
 * this to ensure that oopses don't scroll off the screen.  It has the
 * side-effect of preventing later-oopsing CPUs from mucking up the display,
 * too.
 *
 * It turns out that the CPU which is allowed to print ends up pausing for
 * the right duration, whereas all the other CPUs pause for twice as long:
 * once in oops_enter(), once in oops_exit().
 */


void oops_enter(void)
{
	tracing_off();
	/* can't trust the integrity of the kernel anymore: */
	debug_locks_off();
	do_oops_enter_exit();
}

Contributors
Person Tokens Prop Commits CommitProp
andrew morton andrew morton 10 58.82% 1 25.00%
arjan van de ven arjan van de ven 3 17.65% 1 25.00%
thomas gleixner thomas gleixner 3 17.65% 1 25.00%
ingo molnar ingo molnar 1 5.88% 1 25.00%
Total 17 100.00% 4 100.00%

/*
 * 64-bit random ID for oopses:
 */

static u64 oops_id;



static int init_oops_id(void)
{
	if (!oops_id)
		get_random_bytes(&oops_id, sizeof(oops_id));
	else
		oops_id++;

	return 0;
}
Contributors
Person Tokens Prop Commits CommitProp
arjan van de ven arjan van de ven 31 100.00% 2 100.00%
Total 31 100.00% 2 100.00%


late_initcall(init_oops_id);



void print_oops_end_marker(void)
{
	init_oops_id();
	pr_warn("---[ end trace %016llx ]---\n", (unsigned long long)oops_id);
}

Contributors
Person Tokens Prop Commits CommitProp
arjan van de ven arjan van de ven 15 68.18% 2 50.00%
andrew morton andrew morton 6 27.27% 1 25.00%
fabian frederick fabian frederick 1 4.55% 1 25.00%
Total 22 100.00% 4 100.00%

/*
 * Called when the architecture exits its oops handler, after printing
 * everything.
 */


void oops_exit(void)
{
	do_oops_enter_exit();
	print_oops_end_marker();
	kmsg_dump(KMSG_DUMP_OOPS);
}

Contributors
Person Tokens Prop Commits CommitProp
arjan van de ven arjan van de ven 13 72.22% 1 50.00%
simon kagstrom simon kagstrom 5 27.78% 1 50.00%
Total 18 100.00% 2 100.00%


struct warn_args {
	
const char *fmt;
	
va_list args;
};



void __warn(const char *file, int line, void *caller, unsigned taint,
	    struct pt_regs *regs, struct warn_args *args)
{
	disable_trace_on_warning();

	pr_warn("------------[ cut here ]------------\n");

	if (file)
		pr_warn("WARNING: CPU: %d PID: %d at %s:%d %pS\n",
			raw_smp_processor_id(), current->pid, file, line,
			caller);
	else
		pr_warn("WARNING: CPU: %d PID: %d at %pS\n",
			raw_smp_processor_id(), current->pid, caller);

	if (args)
		vprintk(args->fmt, args->args);

	if (panic_on_warn) {
		/*
                 * This thread may hit another WARN() in the panic path.
                 * Resetting this prevents additional WARN() from panicking the
                 * system on this thread.  Other threads are blocked by the
                 * panic_mutex in panic().
                 */
		panic_on_warn = 0;
		panic("panic_on_warn set ...\n");
	}

	print_modules();

	if (regs)
		show_regs(regs);
	else
		dump_stack();

	print_oops_end_marker();

	/* Just a warning, don't kill lockdep. */
	add_taint(taint, LOCKDEP_STILL_OK);
}

Contributors
Person Tokens Prop Commits CommitProp
arjan van de ven arjan van de ven 51 38.35% 2 22.22%
josh poimboeuf josh poimboeuf 37 27.82% 1 11.11%
prarit bhargava prarit bhargava 16 12.03% 1 11.11%
linus torvalds linus torvalds 10 7.52% 1 11.11%
alex thorlton alex thorlton 9 6.77% 1 11.11%
ben hutchings ben hutchings 4 3.01% 1 11.11%
rusty russell rusty russell 3 2.26% 1 11.11%
steven rostedt steven rostedt 3 2.26% 1 11.11%
Total 133 100.00% 9 100.00%

#ifdef WANT_WARN_ON_SLOWPATH


void warn_slowpath_fmt(const char *file, int line, const char *fmt, ...)
{
	struct warn_args args;

	args.fmt = fmt;
	va_start(args.args, fmt);
	__warn(file, line, __builtin_return_address(0), TAINT_WARN, NULL,
	       &args);
	va_end(args.args);
}
Contributors
Person Tokens Prop Commits CommitProp
linus torvalds linus torvalds 59 90.77% 1 33.33%
josh poimboeuf josh poimboeuf 4 6.15% 1 33.33%
ben hutchings ben hutchings 2 3.08% 1 33.33%
Total 65 100.00% 3 100.00%


EXPORT_SYMBOL(warn_slowpath_fmt);



void warn_slowpath_fmt_taint(const char *file, int line,
			     unsigned taint, const char *fmt, ...)
{
	struct warn_args args;

	args.fmt = fmt;
	va_start(args.args, fmt);
	__warn(file, line, __builtin_return_address(0), taint, NULL, &args);
	va_end(args.args);
}
Contributors
Person Tokens Prop Commits CommitProp
ben hutchings ben hutchings 64 94.12% 1 50.00%
josh poimboeuf josh poimboeuf 4 5.88% 1 50.00%
Total 68 100.00% 2 100.00%


EXPORT_SYMBOL(warn_slowpath_fmt_taint);



void warn_slowpath_null(const char *file, int line)
{
	__warn(file, line, __builtin_return_address(0), TAINT_WARN, NULL, NULL);
}
Contributors
Person Tokens Prop Commits CommitProp
andi kleen andi kleen 20 64.52% 1 25.00%
linus torvalds linus torvalds 6 19.35% 1 25.00%
josh poimboeuf josh poimboeuf 3 9.68% 1 25.00%
ben hutchings ben hutchings 2 6.45% 1 25.00%
Total 31 100.00% 4 100.00%


EXPORT_SYMBOL(warn_slowpath_null);
#endif

#ifdef CONFIG_CC_STACKPROTECTOR

/*
 * Called when gcc's -fstack-protector feature is used, and
 * gcc detects corruption of the on-stack canary value
 */


__visible void __stack_chk_fail(void)
{
	panic("stack-protector: Kernel stack is corrupted in: %p\n",
		__builtin_return_address(0));
}
Contributors
Person Tokens Prop Commits CommitProp
arjan van de ven arjan van de ven 11 61.11% 1 33.33%
ingo molnar ingo molnar 6 33.33% 1 33.33%
andi kleen andi kleen 1 5.56% 1 33.33%
Total 18 100.00% 3 100.00%


EXPORT_SYMBOL(__stack_chk_fail);

#endif

core_param(panic, panic_timeout, int, 0644);
core_param(pause_on_oops, pause_on_oops, int, 0644);
core_param(panic_on_warn, panic_on_warn, int, 0644);



static int __init setup_crash_kexec_post_notifiers(char *s)
{
	crash_kexec_post_notifiers = true;
	return 0;
}
Contributors
Person Tokens Prop Commits CommitProp
masami hiramatsu masami hiramatsu 18 100.00% 1 100.00%
Total 18 100.00% 1 100.00%

early_param("crash_kexec_post_notifiers", setup_crash_kexec_post_notifiers);



static int __init oops_setup(char *s)
{
	if (!s)
		return -EINVAL;
	if (!strcmp(s, "panic"))
		panic_on_oops = 1;
	return 0;
}
Contributors
Person Tokens Prop Commits CommitProp
olaf hering olaf hering 37 100.00% 1 100.00%
Total 37 100.00% 1 100.00%

early_param("oops", oops_setup);
Overall Contributors
Person Tokens Prop Commits CommitProp
andi kleen andi kleen 271 15.70% 6 5.83%
andrew morton andrew morton 246 14.25% 4 3.88%
arjan van de ven arjan van de ven 157 9.10% 8 7.77%
hidehiro kawai hidehiro kawai 125 7.24% 4 3.88%
linus torvalds linus torvalds 125 7.24% 4 3.88%
pre-git pre-git 121 7.01% 13 12.62%
tamuki shoichi tamuki shoichi 113 6.55% 1 0.97%
ben hutchings ben hutchings 93 5.39% 3 2.91%
josh poimboeuf josh poimboeuf 55 3.19% 1 0.97%
ingo molnar ingo molnar 52 3.01% 5 4.85%
olaf hering olaf hering 44 2.55% 1 0.97%
masami hiramatsu masami hiramatsu 37 2.14% 1 0.97%
rusty russell rusty russell 36 2.09% 4 3.88%
prarit bhargava prarit bhargava 31 1.80% 1 0.97%
michael holzheu michael holzheu 21 1.22% 1 0.97%
arnaldo carvalho de melo arnaldo carvalho de melo 12 0.70% 1 0.97%
fabian frederick fabian frederick 12 0.70% 1 0.97%
alex thorlton alex thorlton 9 0.52% 1 0.97%
petr mladek petr mladek 9 0.52% 1 0.97%
vitaly kuznetsov vitaly kuznetsov 9 0.52% 2 1.94%
seth jennings seth jennings 9 0.52% 1 0.97%
josh hunt josh hunt 8 0.46% 1 0.97%
hugh dickins hugh dickins 8 0.46% 1 0.97%
simon kagstrom simon kagstrom 8 0.46% 1 0.97%
eric w. biederman eric w. biederman 7 0.41% 2 1.94%
jason wessel jason wessel 7 0.41% 1 0.97%
mathieu desnoyers mathieu desnoyers 7 0.41% 1 0.97%
steven rostedt steven rostedt 6 0.35% 1 0.97%
nick piggin nick piggin 6 0.35% 2 1.94%
kees cook kees cook 6 0.35% 1 0.97%
alan stern alan stern 5 0.29% 1 0.97%
huang ying huang ying 5 0.29% 1 0.97%
frederic weisbecker frederic weisbecker 5 0.29% 1 0.97%
aaro koskinen aaro koskinen 5 0.29% 1 0.97%
anton blanchard anton blanchard 4 0.23% 2 1.94%
seiji aguchi seiji aguchi 4 0.23% 1 0.97%
daisuke hatayama daisuke hatayama 4 0.23% 1 0.97%
dave jones dave jones 4 0.23% 2 1.94%
nur hussein nur hussein 4 0.23% 1 0.97%
theodore tso theodore tso 3 0.17% 1 0.97%
thomas gleixner thomas gleixner 3 0.17% 1 0.97%
pavel emelianov pavel emelianov 3 0.17% 1 0.97%
alexander nyberg alexander nyberg 3 0.17% 1 0.97%
eric piel eric piel 3 0.17% 1 0.97%
vikram mulukutla vikram mulukutla 3 0.17% 1 0.97%
jan beulich jan beulich 3 0.17% 1 0.97%
peter zijlstra peter zijlstra 2 0.12% 1 0.97%
kyle mcmartin kyle mcmartin 2 0.12% 1 0.97%
tom 'spot' callaway tom 'spot' callaway 2 0.12% 1 0.97%
greg kroah-hartman greg kroah-hartman 2 0.12% 1 0.97%
jason baron jason baron 2 0.12% 1 0.97%
christian borntrager christian borntrager 1 0.06% 1 0.97%
jeff dike jeff dike 1 0.06% 1 0.97%
heiko carstens heiko carstens 1 0.06% 1 0.97%
tejun heo tejun heo 1 0.06% 1 0.97%
martin schwidefsky martin schwidefsky 1 0.06% 1 0.97%
Total 1726 100.00% 103 100.00%
  Directory: kernel

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
	Person	Tokens	Prop	Commits	CommitProp
tamuki shoichi	tamuki shoichi	12	100.00%	1	100.00%
	Total	12	100.00%	1	100.00%
cregit-Linux how code gets into the kernel

Release 4.7 kernel/panic.c

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Overall Contributors
