diff options
Diffstat (limited to 'kernel/locking/lockdep.c')
| -rw-r--r-- | kernel/locking/lockdep.c | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c index bf1c00c881e4..2270ec68f10a 100644 --- a/kernel/locking/lockdep.c +++ b/kernel/locking/lockdep.c @@ -788,6 +788,21 @@ static int very_verbose(struct lock_class *class) * Is this the address of a static object: */ #ifdef __KERNEL__ +/* + * Check if an address is part of freed initmem. After initmem is freed, + * memory can be allocated from it, and such allocations would then have + * addresses within the range [_stext, _end]. + */ +#ifndef arch_is_kernel_initmem_freed +static int arch_is_kernel_initmem_freed(unsigned long addr) +{ + if (system_state < SYSTEM_FREEING_INITMEM) + return 0; + + return init_section_contains((void *)addr, 1); +} +#endif + static int static_obj(const void *obj) { unsigned long start = (unsigned long) &_stext, @@ -803,9 +818,6 @@ static int static_obj(const void *obj) if ((addr >= start) && (addr < end)) return 1; - if (arch_is_kernel_data(addr)) - return 1; - /* * in-kernel percpu var? */ @@ -888,7 +900,7 @@ look_up_lock_class(const struct lockdep_map *lock, unsigned int subclass) if (DEBUG_LOCKS_WARN_ON(!irqs_disabled())) return NULL; - hlist_for_each_entry_rcu(class, hash_head, hash_entry) { + hlist_for_each_entry_rcu_notrace(class, hash_head, hash_entry) { if (class->key == key) { /* * Huh! same key, different name? Did someone trample @@ -4671,7 +4683,7 @@ print_lock_invalid_wait_context(struct task_struct *curr, /* * Verify the wait_type context. * - * This check validates we takes locks in the right wait-type order; that is it + * This check validates we take locks in the right wait-type order; that is it * ensures that we do not take mutexes inside spinlocks and do not attempt to * acquire spinlocks inside raw_spinlocks and the sort. * @@ -5366,7 +5378,7 @@ int __lock_is_held(const struct lockdep_map *lock, int read) struct held_lock *hlock = curr->held_locks + i; if (match_held_lock(hlock, lock)) { - if (read == -1 || hlock->read == read) + if (read == -1 || !!hlock->read == read) return LOCK_STATE_HELD; return LOCK_STATE_NOT_HELD; |