From: Kees Cook <keescook@chromium.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Kees Cook <keescook@chromium.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
linux-hardening@vger.kernel.org
Subject: [PATCH] mempool: Use kmalloc_size_roundup() to match ksize() usage
Date: Tue, 18 Oct 2022 02:03:29 -0700 [thread overview]
Message-ID: <20221018090323.never.897-kees@kernel.org> (raw)
Round up allocations with kmalloc_size_roundup() so that mempool's use
of ksize() is always accurate and no special handling of the memory is
needed by KASAN, UBSAN_BOUNDS, nor FORTIFY_SOURCE.
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-mm@kvack.org
Signed-off-by: Kees Cook <keescook@chromium.org>
---
mm/mempool.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/mempool.c b/mm/mempool.c
index 96488b13a1ef..0f3107b28e6b 100644
--- a/mm/mempool.c
+++ b/mm/mempool.c
@@ -526,7 +526,7 @@ EXPORT_SYMBOL(mempool_free_slab);
*/
void *mempool_kmalloc(gfp_t gfp_mask, void *pool_data)
{
- size_t size = (size_t)pool_data;
+ size_t size = kmalloc_size_roundup((size_t)pool_data);
return kmalloc(size, gfp_mask);
}
EXPORT_SYMBOL(mempool_kmalloc);
--
2.34.1
next reply other threads:[~2022-10-18 9:03 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-18 9:03 Kees Cook [this message]
2022-10-18 22:51 ` [PATCH] mempool: Use kmalloc_size_roundup() to match ksize() usage Andrew Morton
2022-10-19 5:37 ` Kees Cook
2022-10-24 18:03 ` Vlastimil Babka (SUSE)
2022-10-25 22:55 ` Kees Cook
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