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mm/kasan: Delete the lock when adding regions

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Signed-off-by: wangmingrong <wangmingrong@xiaomi.com>
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wangmingrong 2024-01-29 14:58:15 +08:00 committed by Xiang Xiao
parent fa5d843aa9
commit 64cbafeaa0
1 changed files with 0 additions and 4 deletions
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4
mm/kasan/kasan.c
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@ -310,19 +310,15 @@ void kasan_unpoison(FAR const void *addr, size_t size)
void kasan_register(FAR void *addr, FAR size_t *size) void kasan_register(FAR void *addr, FAR size_t *size)
{ {
FAR struct kasan_region_s *region; FAR struct kasan_region_s *region;
int flags;
region = (FAR struct kasan_region_s *) region = (FAR struct kasan_region_s *)
((FAR char *)addr + *size - KASAN_REGION_SIZE(*size)); ((FAR char *)addr + *size - KASAN_REGION_SIZE(*size));
region->begin = (uintptr_t)addr; region->begin = (uintptr_t)addr;
region->end = region->begin + *size; region->end = region->begin + *size;
flags = spin_lock_irqsave(&g_lock);
region->next = g_region; region->next = g_region;
g_region = region; g_region = region;
g_region_init = KASAN_INIT_VALUE; g_region_init = KASAN_INIT_VALUE;
spin_unlock_irqrestore(&g_lock, flags);
kasan_poison(addr, *size); kasan_poison(addr, *size);
*size -= KASAN_REGION_SIZE(*size); *size -= KASAN_REGION_SIZE(*size);