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[71.184.117.43]) by smtp.gmail.com with ESMTPSA id g19sm11133394qtb.2.2019.10.08.04.42.48 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 08 Oct 2019 04:42:48 -0700 (PDT) From: Qian Cai Mime-Version: 1.0 (1.0) Subject: Re: [PATCH] kasan: fix the missing underflow in memmove and memcpy with CONFIG_KASAN_GENERIC=y Date: Tue, 8 Oct 2019 07:42:47 -0400 Message-Id: References: <1570532528.4686.102.camel@mtksdccf07> In-Reply-To: <1570532528.4686.102.camel@mtksdccf07> To: Walter Wu X-Mailer: iPhone Mail (17A860) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191008_044250_416056_CDC86FF8 X-CRM114-Status: GOOD ( 10.29 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: wsd_upstream , linux-mediatek@lists.infradead.org, LKML , kasan-dev , Linux-MM , Alexander Potapenko , Linux ARM , Matthias Brugger , Andrey Ryabinin , Dmitry Vyukov Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org > On Oct 8, 2019, at 7:02 AM, Walter Wu wrote: > > I don't know very well in UBSAN, but I try to build ubsan kernel and > test a negative number in memset and kmalloc_memmove_invalid_size(), it > look like no check. It sounds like more important to figure out why the UBSAN is not working in this case rather than duplicating functionality elsewhere. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel