From 7f349be7afc92dcd418d407bb288cc54b80efacc Mon Sep 17 00:00:00 2001 From: XYCode Kerman <117142071+XYCode-Kerman@users.noreply.github.com> Date: Sat, 13 Apr 2024 00:57:38 +0800 Subject: [PATCH] Update panic.c --- kernel/panic.c | 925 +++++-------------------------------------------- 1 file changed, 96 insertions(+), 829 deletions(-) diff --git a/kernel/panic.c b/kernel/panic.c index 747c3f3d289a23..716f0baec40932 100644 --- a/kernel/panic.c +++ b/kernel/panic.c @@ -1,829 +1,96 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * 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 -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#define PANIC_TIMER_STEP 100 -#define PANIC_BLINK_SPD 18 - -#ifdef CONFIG_SMP -/* - * Should we dump all CPUs backtraces in an oops event? - * Defaults to 0, can be changed via sysctl. - */ -static unsigned int __read_mostly sysctl_oops_all_cpu_backtrace; -#else -#define sysctl_oops_all_cpu_backtrace 0 -#endif /* CONFIG_SMP */ - -int panic_on_oops = CONFIG_PANIC_ON_OOPS_VALUE; -static unsigned long tainted_mask = - IS_ENABLED(CONFIG_RANDSTRUCT) ? (1 << TAINT_RANDSTRUCT) : 0; -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; -unsigned long panic_on_taint; -bool panic_on_taint_nousertaint = false; -static unsigned int warn_limit __read_mostly; - -int panic_timeout = CONFIG_PANIC_TIMEOUT; -EXPORT_SYMBOL_GPL(panic_timeout); - -#define PANIC_PRINT_TASK_INFO 0x00000001 -#define PANIC_PRINT_MEM_INFO 0x00000002 -#define PANIC_PRINT_TIMER_INFO 0x00000004 -#define PANIC_PRINT_LOCK_INFO 0x00000008 -#define PANIC_PRINT_FTRACE_INFO 0x00000010 -#define PANIC_PRINT_ALL_PRINTK_MSG 0x00000020 -#define PANIC_PRINT_ALL_CPU_BT 0x00000040 -#define PANIC_PRINT_BLOCKED_TASKS 0x00000080 -unsigned long panic_print; - -ATOMIC_NOTIFIER_HEAD(panic_notifier_list); - -EXPORT_SYMBOL(panic_notifier_list); - -#ifdef CONFIG_SYSCTL -static struct ctl_table kern_panic_table[] = { -#ifdef CONFIG_SMP - { - .procname = "oops_all_cpu_backtrace", - .data = &sysctl_oops_all_cpu_backtrace, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = proc_dointvec_minmax, - .extra1 = SYSCTL_ZERO, - .extra2 = SYSCTL_ONE, - }, -#endif - { - .procname = "warn_limit", - .data = &warn_limit, - .maxlen = sizeof(warn_limit), - .mode = 0644, - .proc_handler = proc_douintvec, - }, - { } -}; - -static __init int kernel_panic_sysctls_init(void) -{ - register_sysctl_init("kernel", kern_panic_table); - return 0; -} -late_initcall(kernel_panic_sysctls_init); -#endif - -static atomic_t warn_count = ATOMIC_INIT(0); - -#ifdef CONFIG_SYSFS -static ssize_t warn_count_show(struct kobject *kobj, struct kobj_attribute *attr, - char *page) -{ - return sysfs_emit(page, "%d\n", atomic_read(&warn_count)); -} - -static struct kobj_attribute warn_count_attr = __ATTR_RO(warn_count); - -static __init int kernel_panic_sysfs_init(void) -{ - sysfs_add_file_to_group(kernel_kobj, &warn_count_attr.attr, NULL); - return 0; -} -late_initcall(kernel_panic_sysfs_init); -#endif - -static long no_blink(int state) -{ - return 0; -} - -/* 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 __noreturn panic_smp_self_stop(void) -{ - while (1) - cpu_relax(); -} - -/* - * 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 __noreturn nmi_panic_self_stop(struct pt_regs *regs) -{ - panic_smp_self_stop(); -} - -/* - * Stop other CPUs in panic. Architecture dependent code may override this - * with more suitable version. For example, if the architecture supports - * crash dump, it should save registers of each stopped CPU and disable - * per-CPU features such as virtualization extensions. - */ -void __weak crash_smp_send_stop(void) -{ - static int cpus_stopped; - - /* - * This function can be called twice in panic path, but obviously - * we execute this only once. - */ - if (cpus_stopped) - return; - - /* - * 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(); - cpus_stopped = 1; -} - -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, this_cpu; - - old_cpu = PANIC_CPU_INVALID; - this_cpu = raw_smp_processor_id(); - - /* atomic_try_cmpxchg updates old_cpu on failure */ - if (atomic_try_cmpxchg(&panic_cpu, &old_cpu, this_cpu)) - panic("%s", msg); - else if (old_cpu != this_cpu) - nmi_panic_self_stop(regs); -} -EXPORT_SYMBOL(nmi_panic); - -static void panic_print_sys_info(bool console_flush) -{ - if (console_flush) { - if (panic_print & PANIC_PRINT_ALL_PRINTK_MSG) - console_flush_on_panic(CONSOLE_REPLAY_ALL); - return; - } - - if (panic_print & PANIC_PRINT_TASK_INFO) - show_state(); - - if (panic_print & PANIC_PRINT_MEM_INFO) - show_mem(); - - if (panic_print & PANIC_PRINT_TIMER_INFO) - sysrq_timer_list_show(); - - if (panic_print & PANIC_PRINT_LOCK_INFO) - debug_show_all_locks(); - - if (panic_print & PANIC_PRINT_FTRACE_INFO) - ftrace_dump(DUMP_ALL); - - if (panic_print & PANIC_PRINT_BLOCKED_TASKS) - show_state_filter(TASK_UNINTERRUPTIBLE); -} - -void check_panic_on_warn(const char *origin) -{ - unsigned int limit; - - if (panic_on_warn) - panic("%s: panic_on_warn set ...\n", origin); - - limit = READ_ONCE(warn_limit); - if (atomic_inc_return(&warn_count) >= limit && limit) - panic("%s: system warned too often (kernel.warn_limit is %d)", - origin, limit); -} - -/* - * Helper that triggers the NMI backtrace (if set in panic_print) - * and then performs the secondary CPUs shutdown - we cannot have - * the NMI backtrace after the CPUs are off! - */ -static void panic_other_cpus_shutdown(bool crash_kexec) -{ - if (panic_print & PANIC_PRINT_ALL_CPU_BT) - trigger_all_cpu_backtrace(); - - /* - * Note that smp_send_stop() is the usual SMP shutdown function, - * which unfortunately may not be hardened to work in a panic - * situation. If we want to do crash dump after notifier calls - * and kmsg_dump, we will need architecture dependent extra - * bits in addition to stopping other CPUs, hence we rely on - * crash_smp_send_stop() for that. - */ - if (!crash_kexec) - smp_send_stop(); - else - crash_smp_send_stop(); -} - -/** - * 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; - - 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; - } - - /* - * 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(); - preempt_disable_notrace(); - - /* - * 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(). - * - * cmpxchg success 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. - */ - old_cpu = PANIC_CPU_INVALID; - this_cpu = raw_smp_processor_id(); - - /* atomic_try_cmpxchg updates old_cpu on failure */ - if (atomic_try_cmpxchg(&panic_cpu, &old_cpu, this_cpu)) { - /* go ahead */ - } else if (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 kgdb is enabled, give it a chance to run before we stop all - * the other CPUs or else we won't be able to debug processes left - * running on them. - */ - kgdb_panic(buf); - - /* - * 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) - __crash_kexec(NULL); - - panic_other_cpus_shutdown(_crash_kexec_post_notifiers); - - /* - * 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); - - panic_print_sys_info(false); - - 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); - - 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(CONSOLE_FLUSH_PENDING); - - panic_print_sys_info(true); - - 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. - */ - if (panic_reboot_mode != REBOOT_UNDEFINED) - reboot_mode = panic_reboot_mode; - 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) - disabled_wait(); -#endif - pr_emerg("---[ end Kernel panic - not syncing: %s ]---\n", buf); - - /* Do not scroll important messages printed above */ - suppress_printk = 1; - - /* - * The final messages may not have been printed if in a context that - * defers printing (such as NMI) and irq_work is not available. - * Explicitly flush the kernel log buffer one last time. - */ - console_flush_on_panic(CONSOLE_FLUSH_PENDING); - - 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); - } -} - -EXPORT_SYMBOL(panic); - -/* - * TAINT_FORCED_RMMOD could be a per-module flag but the module - * is being removed anyway. - */ -const struct taint_flag taint_flags[TAINT_FLAGS_COUNT] = { - [ TAINT_PROPRIETARY_MODULE ] = { 'P', 'G', true }, - [ TAINT_FORCED_MODULE ] = { 'F', ' ', true }, - [ TAINT_CPU_OUT_OF_SPEC ] = { 'S', ' ', false }, - [ TAINT_FORCED_RMMOD ] = { 'R', ' ', false }, - [ TAINT_MACHINE_CHECK ] = { 'M', ' ', false }, - [ TAINT_BAD_PAGE ] = { 'B', ' ', false }, - [ TAINT_USER ] = { 'U', ' ', false }, - [ TAINT_DIE ] = { 'D', ' ', false }, - [ TAINT_OVERRIDDEN_ACPI_TABLE ] = { 'A', ' ', false }, - [ TAINT_WARN ] = { 'W', ' ', false }, - [ TAINT_CRAP ] = { 'C', ' ', true }, - [ TAINT_FIRMWARE_WORKAROUND ] = { 'I', ' ', false }, - [ TAINT_OOT_MODULE ] = { 'O', ' ', true }, - [ TAINT_UNSIGNED_MODULE ] = { 'E', ' ', true }, - [ TAINT_SOFTLOCKUP ] = { 'L', ' ', false }, - [ TAINT_LIVEPATCH ] = { 'K', ' ', true }, - [ TAINT_AUX ] = { 'X', ' ', true }, - [ TAINT_RANDSTRUCT ] = { 'T', ' ', true }, - [ TAINT_TEST ] = { 'N', ' ', true }, -}; - -/** - * print_tainted - return a string to represent the kernel taint state. - * - * For individual taint flag meanings, see Documentation/admin-guide/sysctl/kernel.rst - * - * The string is overwritten by the next call to print_tainted(), - * but is always NULL terminated. - */ -const char *print_tainted(void) -{ - static char buf[TAINT_FLAGS_COUNT + sizeof("Tainted: ")]; - - BUILD_BUG_ON(ARRAY_SIZE(taint_flags) != TAINT_FLAGS_COUNT); - - if (tainted_mask) { - char *s; - int i; - - s = buf + sprintf(buf, "Tainted: "); - for (i = 0; i < TAINT_FLAGS_COUNT; i++) { - const struct taint_flag *t = &taint_flags[i]; - *s++ = test_bit(i, &tainted_mask) ? - t->c_true : t->c_false; - } - *s = 0; - } else - snprintf(buf, sizeof(buf), "Not tainted"); - - return buf; -} - -int test_taint(unsigned flag) -{ - return test_bit(flag, &tainted_mask); -} -EXPORT_SYMBOL(test_taint); - -unsigned long get_taint(void) -{ - return tainted_mask; -} - -/** - * 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); - - if (tainted_mask & panic_on_taint) { - panic_on_taint = 0; - panic("panic_on_taint set ..."); - } -} -EXPORT_SYMBOL(add_taint); - -static void spin_msec(int msecs) -{ - int i; - - for (i = 0; i < msecs; i++) { - touch_nmi_watchdog(); - mdelay(1); - } -} - -/* - * 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); -} - -/* - * Return true if the calling CPU is allowed to print oops-related info. - * This is a bit racy.. - */ -bool oops_may_print(void) -{ - return pause_on_oops_flag == 0; -} - -/* - * 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(); - - if (sysctl_oops_all_cpu_backtrace) - trigger_all_cpu_backtrace(); -} - -static void print_oops_end_marker(void) -{ - pr_warn("---[ end trace %016llx ]---\n", 0ULL); -} - -/* - * 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); -} - -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(); - - 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); - -#pragma GCC diagnostic push -#ifndef __clang__ -#pragma GCC diagnostic ignored "-Wsuggest-attribute=format" -#endif - if (args) - vprintk(args->fmt, args->args); -#pragma GCC diagnostic pop - - print_modules(); - - if (regs) - show_regs(regs); - - check_panic_on_warn("kernel"); - - if (!regs) - dump_stack(); - - print_irqtrace_events(current); - - print_oops_end_marker(); - trace_error_report_end(ERROR_DETECTOR_WARN, (unsigned long)caller); - - /* Just a warning, don't kill lockdep. */ - add_taint(taint, LOCKDEP_STILL_OK); -} - -#ifdef CONFIG_BUG -#ifndef __WARN_FLAGS -void warn_slowpath_fmt(const char *file, int line, unsigned taint, - const char *fmt, ...) -{ - bool rcu = warn_rcu_enter(); - struct warn_args args; - - pr_warn(CUT_HERE); - - if (!fmt) { - __warn(file, line, __builtin_return_address(0), taint, - NULL, NULL); - warn_rcu_exit(rcu); - return; - } - - args.fmt = fmt; - va_start(args.args, fmt); - __warn(file, line, __builtin_return_address(0), taint, NULL, &args); - va_end(args.args); - warn_rcu_exit(rcu); -} -EXPORT_SYMBOL(warn_slowpath_fmt); -#else -void __warn_printk(const char *fmt, ...) -{ - bool rcu = warn_rcu_enter(); - va_list args; - - pr_warn(CUT_HERE); - - va_start(args, fmt); - vprintk(fmt, args); - va_end(args); - warn_rcu_exit(rcu); -} -EXPORT_SYMBOL(__warn_printk); -#endif - -/* Support resetting WARN*_ONCE state */ - -static int clear_warn_once_set(void *data, u64 val) -{ - generic_bug_clear_once(); - memset(__start_once, 0, __end_once - __start_once); - return 0; -} - -DEFINE_DEBUGFS_ATTRIBUTE(clear_warn_once_fops, NULL, clear_warn_once_set, - "%lld\n"); - -static __init int register_warn_debugfs(void) -{ - /* Don't care about failure */ - debugfs_create_file_unsafe("clear_warn_once", 0200, NULL, NULL, - &clear_warn_once_fops); - return 0; -} - -device_initcall(register_warn_debugfs); -#endif - -#ifdef CONFIG_STACKPROTECTOR - -/* - * Called when gcc's -fstack-protector feature is used, and - * gcc detects corruption of the on-stack canary value - */ -__visible noinstr void __stack_chk_fail(void) -{ - instrumentation_begin(); - panic("stack-protector: Kernel stack is corrupted in: %pB", - __builtin_return_address(0)); - instrumentation_end(); -} -EXPORT_SYMBOL(__stack_chk_fail); - -#endif - -core_param(panic, panic_timeout, int, 0644); -core_param(panic_print, panic_print, ulong, 0644); -core_param(pause_on_oops, pause_on_oops, int, 0644); -core_param(panic_on_warn, panic_on_warn, int, 0644); -core_param(crash_kexec_post_notifiers, crash_kexec_post_notifiers, bool, 0644); - -static int __init oops_setup(char *s) -{ - if (!s) - return -EINVAL; - if (!strcmp(s, "panic")) - panic_on_oops = 1; - return 0; -} -early_param("oops", oops_setup); - -static int __init panic_on_taint_setup(char *s) -{ - char *taint_str; - - if (!s) - return -EINVAL; - - taint_str = strsep(&s, ","); - if (kstrtoul(taint_str, 16, &panic_on_taint)) - return -EINVAL; - - /* make sure panic_on_taint doesn't hold out-of-range TAINT flags */ - panic_on_taint &= TAINT_FLAGS_MAX; - - if (!panic_on_taint) - return -EINVAL; - - if (s && !strcmp(s, "nousertaint")) - panic_on_taint_nousertaint = true; - - pr_info("panic_on_taint: bitmask=0x%lx nousertaint_mode=%s\n", - panic_on_taint, str_enabled_disabled(panic_on_taint_nousertaint)); - - return 0; -} -early_param("panic_on_taint", panic_on_taint_setup); + ..-=-:.:-==-====-====--.. + ..:=++*##**==--:::=*#**#########+===-. + ..-=++*****+*+*****-::-=+++-=+++*###*#####*=:. + .::==+++******##*#*+==: .:--=-+*+**#############*--: + .:-==+++**************+*++=: --:-:-=--=*+*########*######**=:. + .:-====+++++++++++++******####+=-: .--=++*####*#########****=-. + .--======+++++++++++++++++********++++::::. .: .-:--=**++*#########***=: + :-========+++++++++++=====+++++++++*****###%*=--:-:. .:---=++*###********++- + .:-=--=---=++++++==========++++****###%#######*#****+++=-:. :-=+***++*++++= + .:--:----==++***+========++****#####%%%%%%%%%%%%%%%%##*+=-::.. -**#*******= + .:::::-:--=+*##*+====-==++******######%%%%%%%#%%%%##*=-:.. .=++###*#+-=-- + ::::::::-==+*#*++=====++++*********###%%%%%%*#*++++=:.. .. =*##*#+. :**: + ..:::::::---+**++====++++++++********###%%%%#+==-:... .-##*#: -*##+. + .::::::::::=+++*========++++***********####*+-::. :+#*-.*####*. + ..::::::::::=+=*+==========++*************##*+=-:. . . -#*++*#####. + .::::::::::-=+=+======--=-==++**************#**=:-:... .:. ..:. =+*+#######* + .::::::::::----+====-------==+++****########*==-:... .--=- ......:-::... =:-****####* + ........::::---+====-------===+++****######%#+::. =*=:: ...... . -#+.+****##*+ + .......::.::--=====--------==+++****#######%%*-. :-:. .:+##+*#*#****- + 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.:::.:::::::.....::::::-===+++**=:---=---:......:-==++*+====-*+=**=--=-:.:*%####**: :..- + .:..:::::::.....::::::--=+++**+-----=============+++****#%-:+*++*##++*--######***: . + :::.:::::.........::.:--=++**+=--:::--===+++**+=-=++*#####*****=**####=#######***: .: + ::...:::.........::..::=++**+==-...::--===+*#***==+**##########=+**###**####****+. :: + :::...........:..:::.:-=+***===:...::-::::-=+****+**###*#######+=**########*****=::. + ::...............:::::-=+***+==:::... ..:--==+*####***####*=+**#####******= + .-.:.............::::::-=+**++===: ..:=+********#++**####*******- + .-.:...........::::::::=++**++==++: ..::.. ..-+*+++**++**###*******= + ..............:::::::=+***+==--==-:..::-==+=:::::-:. .:==++*++***#*******+ + ..............:::.::==***++=::----=-======+=---===- .:-=++++**###******+ + ::.................:-++*+++-::.----=++++**+++====--::-=+*++++++**##******- + ::................:-++++==-::..:--===++++=======++++++****+++**********- + .-:................-++++-=-::....::-=+***+++++********##***++********+: + :=-...............-=+++--=--:.:....::-=+++++********###****+*******=. + -+-:.............:-=+++===--::::---:::-----==++++**##***********+: + :=-:.............:-====+++===---====-=====+++*****************+. + :--:............:-===+**++==+==+++=+++++******#####*******+=. + ::::............:-=++*++++==+++***############*+##****++- + .:::...........::-++++++++++****##########*+=*#***++*: + ..............:-=+====+++++****###########**++++=. + ............:---====++++++**#######**+++++-. + ....:::::::::---=======++++*+**+++**=-. + ..::::::::::--------===+++++*=-: + ...::---------===++****+: + ..:-=====++++==-:. + ...... + + As we all know, Benjamin Netanyahu == BB + so + + ______ _ ______ _ _ + | ___ (_) | ___ \ | | | | + | |_/ /_ __ _ | |_/ /_ __ ___ | |_| |__ ___ _ __ + | ___ \ |/ _` | | ___ \ '__/ _ \| __| '_ \ / _ \ '__| + | |_/ / | (_| | | |_/ / | | (_) | |_| | | | __/ | + \____/|_|\__, | \____/|_| \___/ \__|_| |_|\___|_| + __/ | + |___/ + + _ + (_) + _ ___ + | / __| + | \__ \ + |_|___/ + + + _ _ _ _ _ __ __ + | | | | | | | | (_) \ \ / / + | | | | __ _| |_ ___| |__ _ _ __ __ _ \ V /___ _ _ + | |/\| |/ _` | __/ __| '_ \| | '_ \ / _` | \ // _ \| | | | + \ /\ / (_| | || (__| | | | | | | | (_| | | | (_) | |_| | + \/ \/ \__,_|\__\___|_| |_|_|_| |_|\__, | \_/\___/ \__,_| + __/ | + |___/