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memory management: add more protection against corruption

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Matheus
2023-07-23 01:06:22 -03:00
parent 6c3164c958
commit a3da864de8
3 changed files with 34 additions and 6 deletions
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kernel-src/mm/slab.c
+2 -2
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@@ -87,10 +87,10 @@ static void *takeobject(scache_t *cache, slab_t *slab) {
if (cache->size < SLAB_INDIRECT_CUTOFF) {
void *addr = (void *)objend;
void *base = (void *)ROUND_DOWN((uintptr_t)slab, PAGE_SIZE);
__assert(addr > base && addr < (void *)slab);
__assert(addr >= base && addr < (void *)slab);
} else {
void *addr = slab->base + ((uintptr_t)objend - ROUND_DOWN((uintptr_t)slab, PAGE_SIZE)) / sizeof(void **) * cache->truesize;
__assert(addr > slab->base && (uintptr_t)addr < (uintptr_t)slab->base + cache->slabobjcount * cache->truesize);
__assert(addr >= slab->base && (uintptr_t)addr < (uintptr_t)slab->base + cache->slabobjcount * cache->truesize);
}
#endif