From f4c38f0bb27cd41abef69a03495d6eaf1ac215ed Mon Sep 17 00:00:00 2001
From: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date: Sun, 13 Aug 2023 20:11:19 +0200
Subject: slab [SLAB_VERIFY]: Do not enable KMEM_CF_VERIFY on large slabs
That would be refused by kmem_cache_compute_properties later on anyway,
and prevent the kernel from booting at all.
---
kern/slab.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
(limited to 'kern/slab.c')
diff --git a/kern/slab.c b/kern/slab.c
index e26567fb..d4b6b7a3 100644
--- a/kern/slab.c
+++ b/kern/slab.c
@@ -814,10 +814,10 @@ void kmem_cache_init(struct kmem_cache *cache, const char *name,
#endif /* SLAB_USE_CPU_POOLS */
size_t buf_size;
-#if SLAB_VERIFY
- cache->flags = KMEM_CF_VERIFY;
-#else /* SLAB_VERIFY */
cache->flags = 0;
+#if SLAB_VERIFY
+ if (obj_size <= PAGE_SIZE - sizeof(union kmem_bufctl) + sizeof(struct kmem_buftag))
+ cache->flags |= KMEM_CF_VERIFY;
#endif /* SLAB_VERIFY */
if (flags & KMEM_CACHE_VERIFY)
--
cgit v1.2.3