diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/jump_label.c | 13 | ||||
| -rw-r--r-- | kernel/kprobes.c | 2 | ||||
| -rw-r--r-- | kernel/locking/lockdep_proc.c | 26 | ||||
| -rw-r--r-- | kernel/static_call.c | 13 |
4 files changed, 32 insertions, 22 deletions
diff --git a/kernel/jump_label.c b/kernel/jump_label.c index bdb0681bece8..b156e152d6b4 100644 --- a/kernel/jump_label.c +++ b/kernel/jump_label.c @@ -316,14 +316,16 @@ static int addr_conflict(struct jump_entry *entry, void *start, void *end) } static int __jump_label_text_reserved(struct jump_entry *iter_start, - struct jump_entry *iter_stop, void *start, void *end) + struct jump_entry *iter_stop, void *start, void *end, bool init) { struct jump_entry *iter; iter = iter_start; while (iter < iter_stop) { - if (addr_conflict(iter, start, end)) - return 1; + if (init || !jump_entry_is_init(iter)) { + if (addr_conflict(iter, start, end)) + return 1; + } iter++; } @@ -562,7 +564,7 @@ static int __jump_label_mod_text_reserved(void *start, void *end) ret = __jump_label_text_reserved(mod->jump_entries, mod->jump_entries + mod->num_jump_entries, - start, end); + start, end, mod->state == MODULE_STATE_COMING); module_put(mod); @@ -788,8 +790,9 @@ early_initcall(jump_label_init_module); */ int jump_label_text_reserved(void *start, void *end) { + bool init = system_state < SYSTEM_RUNNING; int ret = __jump_label_text_reserved(__start___jump_table, - __stop___jump_table, start, end); + __stop___jump_table, start, end, init); if (ret) return ret; diff --git a/kernel/kprobes.c b/kernel/kprobes.c index 471b1d18a92f..790a573bbe00 100644 --- a/kernel/kprobes.c +++ b/kernel/kprobes.c @@ -35,6 +35,7 @@ #include <linux/ftrace.h> #include <linux/cpu.h> #include <linux/jump_label.h> +#include <linux/static_call.h> #include <linux/perf_event.h> #include <asm/sections.h> @@ -1561,6 +1562,7 @@ static int check_kprobe_address_safe(struct kprobe *p, if (!kernel_text_address((unsigned long) p->addr) || within_kprobe_blacklist((unsigned long) p->addr) || jump_label_text_reserved(p->addr, p->addr) || + static_call_text_reserved(p->addr, p->addr) || find_bug((unsigned long)p->addr)) { ret = -EINVAL; goto out; diff --git a/kernel/locking/lockdep_proc.c b/kernel/locking/lockdep_proc.c index 806978314496..b8d9a050c337 100644 --- a/kernel/locking/lockdep_proc.c +++ b/kernel/locking/lockdep_proc.c @@ -70,26 +70,28 @@ static int l_show(struct seq_file *m, void *v) #ifdef CONFIG_DEBUG_LOCKDEP seq_printf(m, " OPS:%8ld", debug_class_ops_read(class)); #endif -#ifdef CONFIG_PROVE_LOCKING - seq_printf(m, " FD:%5ld", lockdep_count_forward_deps(class)); - seq_printf(m, " BD:%5ld", lockdep_count_backward_deps(class)); -#endif + if (IS_ENABLED(CONFIG_PROVE_LOCKING)) { + seq_printf(m, " FD:%5ld", lockdep_count_forward_deps(class)); + seq_printf(m, " BD:%5ld", lockdep_count_backward_deps(class)); - get_usage_chars(class, usage); - seq_printf(m, " %s", usage); + get_usage_chars(class, usage); + seq_printf(m, " %s", usage); + } seq_printf(m, ": "); print_name(m, class); seq_puts(m, "\n"); - list_for_each_entry(entry, &class->locks_after, entry) { - if (entry->distance == 1) { - seq_printf(m, " -> [%p] ", entry->class->key); - print_name(m, entry->class); - seq_puts(m, "\n"); + if (IS_ENABLED(CONFIG_PROVE_LOCKING)) { + list_for_each_entry(entry, &class->locks_after, entry) { + if (entry->distance == 1) { + seq_printf(m, " -> [%p] ", entry->class->key); + print_name(m, entry->class); + seq_puts(m, "\n"); + } } + seq_puts(m, "\n"); } - seq_puts(m, "\n"); return 0; } diff --git a/kernel/static_call.c b/kernel/static_call.c index 723fcc9d20db..43ba0b1e0edb 100644 --- a/kernel/static_call.c +++ b/kernel/static_call.c @@ -292,13 +292,15 @@ static int addr_conflict(struct static_call_site *site, void *start, void *end) static int __static_call_text_reserved(struct static_call_site *iter_start, struct static_call_site *iter_stop, - void *start, void *end) + void *start, void *end, bool init) { struct static_call_site *iter = iter_start; while (iter < iter_stop) { - if (addr_conflict(iter, start, end)) - return 1; + if (init || !static_call_is_init(iter)) { + if (addr_conflict(iter, start, end)) + return 1; + } iter++; } @@ -324,7 +326,7 @@ static int __static_call_mod_text_reserved(void *start, void *end) ret = __static_call_text_reserved(mod->static_call_sites, mod->static_call_sites + mod->num_static_call_sites, - start, end); + start, end, mod->state == MODULE_STATE_COMING); module_put(mod); @@ -459,8 +461,9 @@ static inline int __static_call_mod_text_reserved(void *start, void *end) int static_call_text_reserved(void *start, void *end) { + bool init = system_state < SYSTEM_RUNNING; int ret = __static_call_text_reserved(__start_static_call_sites, - __stop_static_call_sites, start, end); + __stop_static_call_sites, start, end, init); if (ret) return ret; |