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([110.9.142.4]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-847a02d41c0sm18474b3a.33.2026.06.29.09.38.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 29 Jun 2026 09:38:12 -0700 (PDT) From: Sang-Heon Jeon To: rppt@kernel.org, Andrey Ryabinin , Paul Walmsley , Palmer Dabbelt , Albert Ou Cc: linux-mm@kvack.org, Sang-Heon Jeon , Alexander Potapenko , Alexandre Ghiti , Andrey Konovalov , Dmitry Vyukov , kasan-dev@googlegroups.com, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, Vincenzo Frascino , Charlie Jenkins Subject: [PATCH v2 4/8] riscv: remove unreachable invalid range check in kasan_init() Date: Tue, 30 Jun 2026 01:37:32 +0900 Message-ID: <20260629163736.1606688-5-ekffu200098@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260629163736.1606688-1-ekffu200098@gmail.com> References: <20260629163736.1606688-1-ekffu200098@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit kasan_init() populates the linear mapping shadow with for_each_mem_range() and breaks the loop when start >= end. for_each_mem_range() never returns an invalid range, so start < end always. Therefore the start >= end check is unreachable, so remove it. No functional change. Signed-off-by: Sang-Heon Jeon Reviewed-by: Charlie Jenkins Tested-by: Charlie Jenkins Reviewed-by: Andrey Ryabinin --- arch/riscv/mm/kasan_init.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/arch/riscv/mm/kasan_init.c b/arch/riscv/mm/kasan_init.c index c4a2a9e5586e..1f3aa9611187 100644 --- a/arch/riscv/mm/kasan_init.c +++ b/arch/riscv/mm/kasan_init.c @@ -512,9 +512,6 @@ void __init kasan_init(void) void *start = (void *)__va(p_start); void *end = (void *)__va(p_end); - if (start >= end) - break; - kasan_populate(kasan_mem_to_shadow(start), kasan_mem_to_shadow(end)); } -- 2.43.0