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[198.145.64.163]) by smtp.gmail.com with ESMTPSA id p67-20020a622946000000b00528bd940390sm6579869pfp.153.2022.09.23.13.28.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 23 Sep 2022 13:28:32 -0700 (PDT) From: Kees Cook To: Vlastimil Babka Cc: Kees Cook , Andrew Morton , linux-mm@kvack.org, "Ruhl, Michael J" , Hyeonggon Yoo <42.hyeyoo@gmail.com>, Christoph Lameter , Pekka Enberg , David Rientjes , Joonsoo Kim , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Greg Kroah-Hartman , Nick Desaulniers , Alex Elder , Josef Bacik , David Sterba , Sumit Semwal , =?UTF-8?q?Christian=20K=C3=B6nig?= , Jesse Brandeburg , Daniel Micay , Yonghong Song , Marco Elver , Miguel Ojeda , linux-kernel@vger.kernel.org, netdev@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, linux-fsdevel@vger.kernel.org, intel-wired-lan@lists.osuosl.org, dev@openvswitch.org, x86@kernel.org, llvm@lists.linux.dev, linux-hardening@vger.kernel.org Subject: [PATCH v2 13/16] mempool: Use kmalloc_size_roundup() to match ksize() usage Date: Fri, 23 Sep 2022 13:28:19 -0700 Message-Id: <20220923202822.2667581-14-keescook@chromium.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220923202822.2667581-1-keescook@chromium.org> References: <20220923202822.2667581-1-keescook@chromium.org> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=821; h=from:subject; bh=1Gas3SCsMDWgBChil0VwFgY9Fr6zuZgi/zbZ+v/amZU=; b=owEBbQKS/ZANAwAKAYly9N/cbcAmAcsmYgBjLhblw9hPBOt2abeHvNz251QmxKrK5qZ9E2npmHln zyeWomSJAjMEAAEKAB0WIQSlw/aPIp3WD3I+bhOJcvTf3G3AJgUCYy4W5QAKCRCJcvTf3G3AJoKkD/ 0Rw7ftGkpv6Cp14LlheghY8ULuROeYsl+xBHJIECYJxb7Zj7xNiTAKJPkYJG2rfH7dJMP4mnVCyvlE aX9DI2jRbF0DpDm8X4kNTAYLiAnekyLGRBI1uuwyosPWzFt5fthMVPKTGw4skU5eJeoliXwvKRjc7w H2hvKX03v8bjW2hWSueT4lkm2RIg4t4qCd7tAHcfkVFPluuXqkRyHl5jKKj/gvloXfr0a7NEcoK6+B OMr9c7RIevNvATAWl7BVsl1C+sgXBlqnebMSX5UB3sQFDThE2TOU6PM8pwx2uGkviWtrIORGwdnrqF 0BWUxYm3S7RgbB0E08f07OQbs6iZbOosdIECqTf8jwkxFWpqXk+ywZexmptnljyesSCsq4Q45yeVtp CivmXPCHnnW/ltVIwlzqLXkKSA1ANCZugfA9MQMfNYzYLJmYhU2oE75hyFkzyLL6O7DnVutl/lmgOX 3BjHh5o+PuSYbw4gy0xL95tSHEokwlTTS9maudQ7pyB/lQFm8Got/UmZKScGYd6rVWQ+NR3+w3ud3e oz3kjiT0YzaO+sAjrsJDYKalavBaxhajZL8QMmPOZRL6XigFy+8x9O7y3Ji6lN4tryxNvAYJ08zYoV GZZ+QW0vnk/Etuibtx0IyAfth89gRlflFdIp1c7NouB249gCifAsYbMMOFbA== X-Developer-Key: i=keescook@chromium.org; a=openpgp; fpr=A5C3F68F229DD60F723E6E138972F4DFDC6DC026 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" 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 Cc: linux-mm@kvack.org Signed-off-by: Kees Cook --- 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 =3D (size_t)pool_data; + size_t size =3D kmalloc_size_roundup((size_t)pool_data); return kmalloc(size, gfp_mask); } EXPORT_SYMBOL(mempool_kmalloc); --=20 2.34.1