^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) #include <linux/random.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #include <linux/stat.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/export.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/stacktrace.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/fault-inject.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * setup_fault_attr() is a helper function for various __setup handlers, so it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * returns 0 on error, because that is what __setup handlers do.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) int setup_fault_attr(struct fault_attr *attr, char *str)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) unsigned long probability;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) unsigned long interval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) int times;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) int space;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) /* "<interval>,<probability>,<space>,<times>" */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) if (sscanf(str, "%lu,%lu,%d,%d",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) &interval, &probability, &space, ×) < 4) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) printk(KERN_WARNING
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) "FAULT_INJECTION: failed to parse arguments\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) attr->probability = probability;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) attr->interval = interval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) atomic_set(&attr->times, times);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) atomic_set(&attr->space, space);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) EXPORT_SYMBOL_GPL(setup_fault_attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) static void fail_dump(struct fault_attr *attr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) if (attr->verbose > 0 && __ratelimit(&attr->ratelimit_state)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) printk(KERN_NOTICE "FAULT_INJECTION: forcing a failure.\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) "name %pd, interval %lu, probability %lu, "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) "space %d, times %d\n", attr->dname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) attr->interval, attr->probability,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) atomic_read(&attr->space),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) atomic_read(&attr->times));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) if (attr->verbose > 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) dump_stack();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #define atomic_dec_not_zero(v) atomic_add_unless((v), -1, 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) static bool fail_task(struct fault_attr *attr, struct task_struct *task)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) return in_task() && task->make_it_fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) #define MAX_STACK_TRACE_DEPTH 32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) #ifdef CONFIG_FAULT_INJECTION_STACKTRACE_FILTER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) static bool fail_stacktrace(struct fault_attr *attr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) int depth = attr->stacktrace_depth;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) unsigned long entries[MAX_STACK_TRACE_DEPTH];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) int n, nr_entries;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) bool found = (attr->require_start == 0 && attr->require_end == ULONG_MAX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) if (depth == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) return found;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) nr_entries = stack_trace_save(entries, depth, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) for (n = 0; n < nr_entries; n++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) if (attr->reject_start <= entries[n] &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) entries[n] < attr->reject_end)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) if (attr->require_start <= entries[n] &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) entries[n] < attr->require_end)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) found = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) return found;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) static inline bool fail_stacktrace(struct fault_attr *attr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) #endif /* CONFIG_FAULT_INJECTION_STACKTRACE_FILTER */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) * This code is stolen from failmalloc-1.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) * http://www.nongnu.org/failmalloc/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) bool should_fail(struct fault_attr *attr, ssize_t size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) if (in_task()) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) unsigned int fail_nth = READ_ONCE(current->fail_nth);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) if (fail_nth) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) fail_nth--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) WRITE_ONCE(current->fail_nth, fail_nth);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) if (!fail_nth)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) /* No need to check any other properties if the probability is 0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) if (attr->probability == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) if (attr->task_filter && !fail_task(attr, current))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) if (atomic_read(&attr->times) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) if (atomic_read(&attr->space) > size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) atomic_sub(size, &attr->space);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) if (attr->interval > 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) attr->count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) if (attr->count % attr->interval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) if (attr->probability <= prandom_u32() % 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) if (!fail_stacktrace(attr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) fail:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) fail_dump(attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) if (atomic_read(&attr->times) != -1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) atomic_dec_not_zero(&attr->times);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) EXPORT_SYMBOL_GPL(should_fail);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) #ifdef CONFIG_FAULT_INJECTION_DEBUG_FS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) static int debugfs_ul_set(void *data, u64 val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) *(unsigned long *)data = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) static int debugfs_ul_get(void *data, u64 *val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) *val = *(unsigned long *)data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) DEFINE_SIMPLE_ATTRIBUTE(fops_ul, debugfs_ul_get, debugfs_ul_set, "%llu\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) static void debugfs_create_ul(const char *name, umode_t mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) struct dentry *parent, unsigned long *value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) debugfs_create_file(name, mode, parent, value, &fops_ul);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) #ifdef CONFIG_FAULT_INJECTION_STACKTRACE_FILTER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) static int debugfs_stacktrace_depth_set(void *data, u64 val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) *(unsigned long *)data =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) min_t(unsigned long, val, MAX_STACK_TRACE_DEPTH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) DEFINE_SIMPLE_ATTRIBUTE(fops_stacktrace_depth, debugfs_ul_get,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) debugfs_stacktrace_depth_set, "%llu\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) static void debugfs_create_stacktrace_depth(const char *name, umode_t mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) struct dentry *parent,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) unsigned long *value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) debugfs_create_file(name, mode, parent, value, &fops_stacktrace_depth);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) #endif /* CONFIG_FAULT_INJECTION_STACKTRACE_FILTER */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) struct dentry *fault_create_debugfs_attr(const char *name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) struct dentry *parent, struct fault_attr *attr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) umode_t mode = S_IFREG | S_IRUSR | S_IWUSR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) struct dentry *dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) dir = debugfs_create_dir(name, parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) if (IS_ERR(dir))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) return dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) debugfs_create_ul("probability", mode, dir, &attr->probability);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) debugfs_create_ul("interval", mode, dir, &attr->interval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) debugfs_create_atomic_t("times", mode, dir, &attr->times);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) debugfs_create_atomic_t("space", mode, dir, &attr->space);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) debugfs_create_ul("verbose", mode, dir, &attr->verbose);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) debugfs_create_u32("verbose_ratelimit_interval_ms", mode, dir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) &attr->ratelimit_state.interval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) debugfs_create_u32("verbose_ratelimit_burst", mode, dir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) &attr->ratelimit_state.burst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) debugfs_create_bool("task-filter", mode, dir, &attr->task_filter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) #ifdef CONFIG_FAULT_INJECTION_STACKTRACE_FILTER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) debugfs_create_stacktrace_depth("stacktrace-depth", mode, dir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) &attr->stacktrace_depth);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) debugfs_create_ul("require-start", mode, dir, &attr->require_start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) debugfs_create_ul("require-end", mode, dir, &attr->require_end);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) debugfs_create_ul("reject-start", mode, dir, &attr->reject_start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) debugfs_create_ul("reject-end", mode, dir, &attr->reject_end);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) #endif /* CONFIG_FAULT_INJECTION_STACKTRACE_FILTER */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) attr->dname = dget(dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) return dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) EXPORT_SYMBOL_GPL(fault_create_debugfs_attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) #endif /* CONFIG_FAULT_INJECTION_DEBUG_FS */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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