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[198.145.64.163]) by smtp.gmail.com with ESMTPSA id g13-20020aa796ad000000b0053ae018a91esm7005618pfk.173.2022.09.23.13.28.28 (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 , Greg Kroah-Hartman , "Rafael J. Wysocki" , "Ruhl, Michael J" , Hyeonggon Yoo <42.hyeyoo@gmail.com>, Christoph Lameter , Pekka Enberg , David Rientjes , Joonsoo Kim , Andrew Morton , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , 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, linux-mm@kvack.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 12/16] devres: Use kmalloc_size_roundup() to match ksize() usage Date: Fri, 23 Sep 2022 13:28:18 -0700 Message-Id: <20220923202822.2667581-13-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=845; h=from:subject; bh=p9b8wNdLQUTcKVpskeYovP9HfQefiLH6cTy/WYiH/34=; b=owEBbQKS/ZANAwAKAYly9N/cbcAmAcsmYgBjLhblaNBFxJTohammexHC6CbeJ0+h67dRN4PBtvwk 5JonPTWJAjMEAAEKAB0WIQSlw/aPIp3WD3I+bhOJcvTf3G3AJgUCYy4W5QAKCRCJcvTf3G3AJv3zD/ 9LAMXluSBHTtqxb1umMTVE5i5sD3JCHrbpRq7+nm/ihvkEJ1pnKlLOmxomGKq8yeaSA69bZA8KfZSc CR5xfaDsFWx4j9MHisTXdoYIizPEmbqQRRqOxkcdkdBTXGB4/9y7dICzF8nG/wZnRE5cg43nOsJxA/ hh08sM/Jc50zsKD8NK3U423EdCAh5Mur1N+IQdBrcIDvnYzrV9ox60ZBhTx1GxtTQH29f1M7tkTsxb CVJH0I7rS5lLvIDvLckMlcpX75U4M6OfFXPwwIxp8zwb/SpdErJg9OQ0Bc5aPbHKg5h0mzeyjxITo4 Z8ePU5LP/HNZ40tbLl/4YQUWf9RwhgxmPxlaMerypnyhhY7RPOqjaEt4QjEp435c3lkzt/jPKVyQ00 /BWZWjk3oYQBVD1YkNvQadr0W7iugWkFBmy0TMQKbpGlH/9UDUI6ZWX0cskd2A9Vm/9DXzxZlWfb5T 46CEGwe6OTc72/fqVunf113g0JP/k16VF9IW4+cBz7fPkxp8MWBVHYsuByyGXMUPaQPem/RWWPBSdo m2SZX1ZgW/fXrsnRcDrhQ1bd8TrDPmojcGJefLK+ix//dr8fGR/Mmu8QlKJ5P4e96wfEoqQZTf9cys itlMdKLXQRmGqut8owpdZR9a0jlrGiYaoK47SOl258qhzKf6gWj/fY7i/IJw== X-Developer-Key: i=keescook@chromium.org; a=openpgp; fpr=A5C3F68F229DD60F723E6E138972F4DFDC6DC026 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org Round up allocations with kmalloc_size_roundup() so that devres's use of ksize() is always accurate and no special handling of the memory is needed by KASAN, UBSAN_BOUNDS, nor FORTIFY_SOURCE. Cc: Greg Kroah-Hartman Cc: "Rafael J. Wysocki" Signed-off-by: Kees Cook --- drivers/base/devres.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/base/devres.c b/drivers/base/devres.c index 864d0b3f566e..7db20ce7ea8a 100644 --- a/drivers/base/devres.c +++ b/drivers/base/devres.c @@ -101,6 +101,9 @@ static bool check_dr_size(size_t size, size_t *tot_size) size, tot_size))) return false; + /* Actually allocate the full kmalloc bucket size. */ + *tot_size = kmalloc_size_roundup(*tot_size); + return true; } -- 2.34.1