From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id EB289C43327 for ; Tue, 30 Jun 2026 15:05:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=pET2U8ht/Z5Y/tM5xu8xvsgu43pJmHt3P/wNJHdVjWU=; b=xuXzUzFwCC2SKI +Jwbex2HiYl1vOJkiQGj8nvWNuTqh2/VBNDskQo0zseYt/0Tw3nKRzdMGixBaCmeENqzkFrlNLDMJ UbGvS6veXyamDda37czXDrYWIHsA9jxkp7eW2POxJ1WVuTnpinycQ+csqzi8hhfqlbYXAPsT1MTQk CvzO94gvw4+mRZCiTwm5mMIn5GcvhTZcjil6E8+NLSz8oCWChYlrJF+d1O27lHdCMcB5bHKmG6OGk PPBAyf6BheMOx8thqsAqwwNPd3+89oAFDP+PHDdDVw/lDR7KvoavTFyLGL5E/IlLWMS0kvdIA0S3O 8m+xtE8NONXbqfsVKRMw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wea19-0000000HKVi-11eM; Tue, 30 Jun 2026 15:04:55 +0000 Received: from mail-pl1-x62e.google.com ([2607:f8b0:4864:20::62e]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wea16-0000000HKUL-0cFg for linux-riscv@lists.infradead.org; Tue, 30 Jun 2026 15:04:53 +0000 Received: by mail-pl1-x62e.google.com with SMTP id d9443c01a7336-2c99672293cso26039375ad.2 for ; Tue, 30 Jun 2026 08:04:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1782831891; x=1783436691; darn=lists.infradead.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=OZ+KouBHR2A5cU5ulbS52ssZaf2NlH3yq/de1XOWkF8=; b=Cup7TQ5tVsk3QhVBHU7IDpYLbb+TKgVvSTffPeJb66QbHqJf1If1ZDGRF5+qTmTw2C Gs0ORPtLDfh5ie/jnRziIMEt6JNHS5CUTAaDtsEKx64dbrLyCjEv5FnEosvH4a4V3nCO /yx97wpNlB6CTTBBphHu8/NGQ3KsYFN5HH5GP1oOAG8/3QvVYWnv3Og/XBJ0TkLv9ich lvBkMGtpLWqKMvdCDy6F/kd7Y7bH9EgaEYpYVjPYkmJluu6I8iQaqE10k/7eFbeqo3rl +CyNn6R0Sr///nACvjsBh046bylFXVAx+CoLW0bGEOzHaXTIckyaaBiFC+2fvo0r4h0o txAA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1782831891; x=1783436691; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=OZ+KouBHR2A5cU5ulbS52ssZaf2NlH3yq/de1XOWkF8=; b=q5ZvAiRP68wYCEsk2wYLkyDFZO2VZ8/58mCNHCF25bgJeC/Q2lTUW0VyangqWVSpw+ Wsic89YyMnqrq9ReKav1dC76aZDhxT3ZXrjHdyZpTE4SnXRHxPIUCoehOPzNjbZOoPCS 9mXyFnY0Ot9KZ6CAFy8DPeVsz3Pix97yG3zkuzFWtcpRZtVepE6JWvZk3z6qaKYoaqh3 CXcgXaZAjDIlhym3biGlf97YZMAtSelAEToknV4jyfzGzTiXPNDxc56+rFRy5rrJlVrn i8PvlrrfAnCxnJ0u46mmb5Xm3+RUfxaXNrwewUimlP8FVEV4cLluklIipoqVETg3SB+b BPcQ== X-Forwarded-Encrypted: i=1; AHgh+RrPKvslCuolR++XGZppV1LFVd1BEMuiQ2Wcm64xZL+MPJ1zSxNWtr9j7sCVSjNjL7dxlZv90TypLS3Ztw==@lists.infradead.org X-Gm-Message-State: AOJu0YxWteBcM9Pqco01eEQgT5a8HoE1SaYJL1W2bINqa+6MPIaO3VyX X7GE2nqB6vf+V0bPOlrAGerSa/1l0sGahNwwzrGf4iCTOYkadpVZFoOM X-Gm-Gg: AfdE7clq8h9tCsksYR+e5+a+mZs6kHFqYlz7Aq8Q7AOmZ2YcLE9iEXRab5thqMXXfht 0zFA+9uwwa5/EgOsK28rXghcNjbumCksjZDCxm27uKMwOk8VPacoFoGprFNM1SMpihp/1cxVqM6 2vqDvSSP4K4+t1bTHeJtwW4pMuvTOQdnJR0trQXing+czdB8SB7AiQQU3AuW3MilswJiamDRx5l kuQk/MqiTjOBQiyBg3MiVJYnfdScf5JQwqZ42Wb2ZnIt2BpywBm5LGILkUWRn3MxCPaNgRiGjCH L7JsuD3GhaH1AuGc3xCAaMf03GHrUPH7BwThqKq2R43qW0+qHSQZeCryXvsoXfUh53mLadLFsbf EEkT2eUnyHsV+2jSHO6qwOzGA4rxIBvZW8glWYdozWiB5beeL6CBswUjrj1jnniMZe1Xjis+Eii Mn0/QJKXY= X-Received: by 2002:a17:903:3c0c:b0:2c9:feea:4e4c with SMTP id d9443c01a7336-2ca5a55308emr7483055ad.15.1782831891075; Tue, 30 Jun 2026 08:04:51 -0700 (PDT) Received: from ubuntu.. ([110.9.142.4]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2ca37a70bc0sm16250465ad.10.2026.06.30.08.04.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 30 Jun 2026 08:04:50 -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 v3 4/8] riscv: remove unreachable invalid range check in kasan_init() Date: Wed, 1 Jul 2026 00:04:09 +0900 Message-ID: <20260630150413.1718632-5-ekffu200098@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260630150413.1718632-1-ekffu200098@gmail.com> References: <20260630150413.1718632-1-ekffu200098@gmail.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260630_080452_181318_384103B0 X-CRM114-Status: UNSURE ( 7.92 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org 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 _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv