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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 06185C10F16 for ; Mon, 6 May 2024 10:45:59 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 87E3E6B0089; Mon, 6 May 2024 06:45:58 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 82E316B008A; Mon, 6 May 2024 06:45:58 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 6A8726B008C; Mon, 6 May 2024 06:45:58 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0014.hostedemail.com [216.40.44.14]) by kanga.kvack.org (Postfix) with ESMTP id 4DB776B0089 for ; Mon, 6 May 2024 06:45:58 -0400 (EDT) Received: from smtpin20.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay09.hostedemail.com (Postfix) with ESMTP id 0034C8016C for ; Mon, 6 May 2024 10:45:57 +0000 (UTC) X-FDA: 82087640754.20.EF72289 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by imf23.hostedemail.com (Postfix) with ESMTP id AF65914001B for ; Mon, 6 May 2024 10:45:55 +0000 (UTC) Authentication-Results: imf23.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b=BkDqUeCN; dmarc=pass (policy=none) header.from=redhat.com; spf=pass (imf23.hostedemail.com: domain of david@redhat.com designates 170.10.129.124 as permitted sender) smtp.mailfrom=david@redhat.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1714992355; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=Smw+aIKqAuwmXdnJKsLLFfvPYwAHcz0uyiBSR6VFvXw=; b=AYpOVzML2oqcLuIdZ7xnEil9uCOkZUF9kuvi4KfMlwdfOzoKglVgztCzNqqk9Ctj8MW4di fvDI8ozxzIC3LpDBHnbC9fhXvoCfmWYLNuFj35065jiQtBGKLRqAObjq9kwSlQK7770zYl aiar3K911DmcVMSzq/5OW9NvUkm8BBM= ARC-Authentication-Results: i=1; imf23.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b=BkDqUeCN; dmarc=pass (policy=none) header.from=redhat.com; spf=pass (imf23.hostedemail.com: domain of david@redhat.com designates 170.10.129.124 as permitted sender) smtp.mailfrom=david@redhat.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1714992355; a=rsa-sha256; cv=none; b=HlUq/wt7KhJ7cfrmMNkMuGa8x6Anh9lIOlc4ScHV47r93ErKWbNo+HECaFWuPlfLT/7bW/ zYzWJRmM35+/BW4PyaPOYg4SOGDyY4hNYnVuAzpu6T8CbmObFM1/1sPGDZWPtWpCDVF57r 201ji+nA634pXvYLyuhI6PmAN8ct97Y= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1714992355; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:autocrypt:autocrypt; bh=Smw+aIKqAuwmXdnJKsLLFfvPYwAHcz0uyiBSR6VFvXw=; b=BkDqUeCNgE7z2+Ac+paQkaDixrrmWpTO5zxWOSdaYbSlxXoLe/pdnGqxqMHbL+V/iYcllu zFjaElLZ3Lg1db7W+iPgefpipYuq8T02qusP1nyAZt/OF8c4UPoJOhY5tOBG82Yu7dFH42 Nd5yzvbRCtInTV6LpG7aftVJhBuZ1Cs= Received: from mail-wr1-f70.google.com (mail-wr1-f70.google.com [209.85.221.70]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-683--P5mfqfiO2qglH_kyEhFlQ-1; Mon, 06 May 2024 06:45:53 -0400 X-MC-Unique: -P5mfqfiO2qglH_kyEhFlQ-1 Received: by mail-wr1-f70.google.com with SMTP id ffacd0b85a97d-34db1830d7cso777838f8f.1 for ; Mon, 06 May 2024 03:45:53 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1714992352; x=1715597152; h=content-transfer-encoding:in-reply-to:organization:autocrypt :content-language:from:references:cc:to:subject:user-agent :mime-version:date:message-id:x-gm-message-state:from:to:cc:subject :date:message-id:reply-to; bh=Smw+aIKqAuwmXdnJKsLLFfvPYwAHcz0uyiBSR6VFvXw=; b=bSXcXOIVSBuokhdLN1i7miqoPBu4U1QmFtU/2nk7e45e2e0Q2vMj5yxK71Dw9nEga0 NtGw4sO6hTn7clms4rAk7YmT2L6l7mUGIMjv57DoNmzp74IIOLFdNz04U3di/nnyTkjv 37G9fzcPT++/MmwY2K60cIV13wUa0QOQ7PlNu+7d/cvjnpDqgozGVp3fCFnBjp3Zvr2I BNBjfwF0VPusw/TfshYTbXGTBUbN6zCR5n3Y4Q4irc0dYIym3VG2nH3h0wBXmq1cFpq7 vJMqMGFXQDa582DgJNWRHDdoZ6/syQBZCRXVFN1ygmgAlJ+Fg47sleMXYrydB3z6sEnQ y4Aw== X-Forwarded-Encrypted: i=1; AJvYcCXI/NpFt0Df3v0+1VgUVcbZATkIWm6C/czHlZZT7H7kI0/HfGU62olvnWnI5Bgu8WzZA16YF0tYtkKPONwDoGO8RSY= X-Gm-Message-State: AOJu0Yzq2KnP09PbiYsVNTEsuKrMGBJL8Moyo7fZ19qqABS6i7ARdt6C 7K5sauCyuxVga2qU3mXCJwQZHCQA5k5GrMIL3iQougZqaxayG2FotkfDN2yXPIyi/4Il+a0yZzH IfryILktgi93yyjzjacDmR6/+9e3rmzNSoKyP/sLiQYq3osuR X-Received: by 2002:a05:6000:884:b0:34a:6fac:6dab with SMTP id cs4-20020a056000088400b0034a6fac6dabmr126336wrb.12.1714992352649; Mon, 06 May 2024 03:45:52 -0700 (PDT) X-Google-Smtp-Source: AGHT+IF/wP90L++ysYMTCofZF2NoKDRlR9FQ7Yhm5u9LqJZpNjDvf5uiMx/IUcV+YmnJwIojeHnxtQ== X-Received: by 2002:a05:6000:884:b0:34a:6fac:6dab with SMTP id cs4-20020a056000088400b0034a6fac6dabmr126323wrb.12.1714992352230; Mon, 06 May 2024 03:45:52 -0700 (PDT) Received: from ?IPV6:2003:cb:c74b:bf00:182c:d606:87cf:6fea? (p200300cbc74bbf00182cd60687cf6fea.dip0.t-ipconnect.de. [2003:cb:c74b:bf00:182c:d606:87cf:6fea]) by smtp.gmail.com with ESMTPSA id v18-20020a05600c445200b0041bf21a62bcsm19397921wmn.1.2024.05.06.03.45.51 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 06 May 2024 03:45:51 -0700 (PDT) Message-ID: <46bec8a9-e71b-4395-9b35-537f11c32fad@redhat.com> Date: Mon, 6 May 2024 12:45:50 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: get_pageblock_bitmap() sometimes returns a NULL pointer which needs to be properly handled To: Markus Gothe , Baolin Wang , "linux-mm@kvack.org" Cc: "akpm@linux-foundation.org" , Zi Yan References: <96439935-ce2a-4714-be5d-cdeb8ea0eb41@redhat.com> From: David Hildenbrand Autocrypt: addr=david@redhat.com; keydata= xsFNBFXLn5EBEAC+zYvAFJxCBY9Tr1xZgcESmxVNI/0ffzE/ZQOiHJl6mGkmA1R7/uUpiCjJ dBrn+lhhOYjjNefFQou6478faXE6o2AhmebqT4KiQoUQFV4R7y1KMEKoSyy8hQaK1umALTdL QZLQMzNE74ap+GDK0wnacPQFpcG1AE9RMq3aeErY5tujekBS32jfC/7AnH7I0v1v1TbbK3Gp XNeiN4QroO+5qaSr0ID2sz5jtBLRb15RMre27E1ImpaIv2Jw8NJgW0k/D1RyKCwaTsgRdwuK Kx/Y91XuSBdz0uOyU/S8kM1+ag0wvsGlpBVxRR/xw/E8M7TEwuCZQArqqTCmkG6HGcXFT0V9 PXFNNgV5jXMQRwU0O/ztJIQqsE5LsUomE//bLwzj9IVsaQpKDqW6TAPjcdBDPLHvriq7kGjt WhVhdl0qEYB8lkBEU7V2Yb+SYhmhpDrti9Fq1EsmhiHSkxJcGREoMK/63r9WLZYI3+4W2rAc UucZa4OT27U5ZISjNg3Ev0rxU5UH2/pT4wJCfxwocmqaRr6UYmrtZmND89X0KigoFD/XSeVv jwBRNjPAubK9/k5NoRrYqztM9W6sJqrH8+UWZ1Idd/DdmogJh0gNC0+N42Za9yBRURfIdKSb B3JfpUqcWwE7vUaYrHG1nw54pLUoPG6sAA7Mehl3nd4pZUALHwARAQABzSREYXZpZCBIaWxk ZW5icmFuZCA8ZGF2aWRAcmVkaGF0LmNvbT7CwZgEEwEIAEICGwMGCwkIBwMCBhUIAgkKCwQW AgMBAh4BAheAAhkBFiEEG9nKrXNcTDpGDfzKTd4Q9wD/g1oFAl8Ox4kFCRKpKXgACgkQTd4Q 9wD/g1oHcA//a6Tj7SBNjFNM1iNhWUo1lxAja0lpSodSnB2g4FCZ4R61SBR4l/psBL73xktp rDHrx4aSpwkRP6Epu6mLvhlfjmkRG4OynJ5HG1gfv7RJJfnUdUM1z5kdS8JBrOhMJS2c/gPf wv1TGRq2XdMPnfY2o0CxRqpcLkx4vBODvJGl2mQyJF/gPepdDfcT8/PY9BJ7FL6Hrq1gnAo4 3Iv9qV0JiT2wmZciNyYQhmA1V6dyTRiQ4YAc31zOo2IM+xisPzeSHgw3ONY/XhYvfZ9r7W1l pNQdc2G+o4Di9NPFHQQhDw3YTRR1opJaTlRDzxYxzU6ZnUUBghxt9cwUWTpfCktkMZiPSDGd KgQBjnweV2jw9UOTxjb4LXqDjmSNkjDdQUOU69jGMUXgihvo4zhYcMX8F5gWdRtMR7DzW/YE BgVcyxNkMIXoY1aYj6npHYiNQesQlqjU6azjbH70/SXKM5tNRplgW8TNprMDuntdvV9wNkFs 9TyM02V5aWxFfI42+aivc4KEw69SE9KXwC7FSf5wXzuTot97N9Phj/Z3+jx443jo2NR34XgF 89cct7wJMjOF7bBefo0fPPZQuIma0Zym71cP61OP/i11ahNye6HGKfxGCOcs5wW9kRQEk8P9 M/k2wt3mt/fCQnuP/mWutNPt95w9wSsUyATLmtNrwccz63XOwU0EVcufkQEQAOfX3n0g0fZz Bgm/S2zF/kxQKCEKP8ID+Vz8sy2GpDvveBq4H2Y34XWsT1zLJdvqPI4af4ZSMxuerWjXbVWb T6d4odQIG0fKx4F8NccDqbgHeZRNajXeeJ3R7gAzvWvQNLz4piHrO/B4tf8svmRBL0ZB5P5A 2uhdwLU3NZuK22zpNn4is87BPWF8HhY0L5fafgDMOqnf4guJVJPYNPhUFzXUbPqOKOkL8ojk CXxkOFHAbjstSK5Ca3fKquY3rdX3DNo+EL7FvAiw1mUtS+5GeYE+RMnDCsVFm/C7kY8c2d0G NWkB9pJM5+mnIoFNxy7YBcldYATVeOHoY4LyaUWNnAvFYWp08dHWfZo9WCiJMuTfgtH9tc75 7QanMVdPt6fDK8UUXIBLQ2TWr/sQKE9xtFuEmoQGlE1l6bGaDnnMLcYu+Asp3kDT0w4zYGsx 5r6XQVRH4+5N6eHZiaeYtFOujp5n+pjBaQK7wUUjDilPQ5QMzIuCL4YjVoylWiBNknvQWBXS lQCWmavOT9sttGQXdPCC5ynI+1ymZC1ORZKANLnRAb0NH/UCzcsstw2TAkFnMEbo9Zu9w7Kv AxBQXWeXhJI9XQssfrf4Gusdqx8nPEpfOqCtbbwJMATbHyqLt7/oz/5deGuwxgb65pWIzufa N7eop7uh+6bezi+rugUI+w6DABEBAAHCwXwEGAEIACYCGwwWIQQb2cqtc1xMOkYN/MpN3hD3 AP+DWgUCXw7HsgUJEqkpoQAKCRBN3hD3AP+DWrrpD/4qS3dyVRxDcDHIlmguXjC1Q5tZTwNB boaBTPHSy/Nksu0eY7x6HfQJ3xajVH32Ms6t1trDQmPx2iP5+7iDsb7OKAb5eOS8h+BEBDeq 3ecsQDv0fFJOA9ag5O3LLNk+3x3q7e0uo06XMaY7UHS341ozXUUI7wC7iKfoUTv03iO9El5f XpNMx/YrIMduZ2+nd9Di7o5+KIwlb2mAB9sTNHdMrXesX8eBL6T9b+MZJk+mZuPxKNVfEQMQ a5SxUEADIPQTPNvBewdeI80yeOCrN+Zzwy/Mrx9EPeu59Y5vSJOx/z6OUImD/GhX7Xvkt3kq Er5KTrJz3++B6SH9pum9PuoE/k+nntJkNMmQpR4MCBaV/J9gIOPGodDKnjdng+mXliF3Ptu6 3oxc2RCyGzTlxyMwuc2U5Q7KtUNTdDe8T0uE+9b8BLMVQDDfJjqY0VVqSUwImzTDLX9S4g/8 kC4HRcclk8hpyhY2jKGluZO0awwTIMgVEzmTyBphDg/Gx7dZU1Xf8HFuE+UZ5UDHDTnwgv7E th6RC9+WrhDNspZ9fJjKWRbveQgUFCpe1sa77LAw+XFrKmBHXp9ZVIe90RMe2tRL06BGiRZr jPrnvUsUUsjRoRNJjKKA/REq+sAnhkNPPZ/NNMjaZ5b8Tovi8C0tmxiCHaQYqj7G2rgnT0kt WNyWQQ== Organization: Red Hat In-Reply-To: X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: AF65914001B X-Stat-Signature: fttad9hk7bsmxcuwdtfqub5hrt9jxj8d X-HE-Tag: 1714992355-626775 X-HE-Meta: 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 v31shCGZ X2NgvTv+V9stRefR6TPN5wwcOsggnMv15XYzSo7ZocHhi+H+aQGyP9JZQOuL8jBprcGcis2DfDa69XyAKHZFOgRIR7CIghdXpgpxDqie5R0vFwhrA2CiOYoB2ZySQf7H2LbIyI8WjjUwh4W0drjWfp3GN2xnCv/JO9VVdkk9UAGsQkKxv/X5mS6MW9Ekxs0B3nAEN4r+Ykii4R9eE9rRDPYMkAcOCqSkafJRNgHjwJjcjMSq5RLvo5y3Tb1REac70Jdihw5NhelGzSp4SanWWb/faicZRgpOx9B3CQnsYziUsdNm4li0Vysn3mz5jHXjpgsKJEezltsO/6XcFzZfKiAEDnI8pDtvjo4NW5f9MNrC1uBPXSiJ5m6oXYau+eMZHTrWYQBzdmhWWHmDJth9VJHfsGAAof90T3B9L X-Bogosity: Ham, tests=bogofilter, spamicity=0.025677, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 06.05.24 12:01, Markus Gothe wrote: > Hi David, Hi! > it is from a vendor SDK for an emedded system using Linux 5.4.55. The current stable version of 5.4 is 5.4.275 ... can you reproduce on more recent (unmodified upstream/stable) kernel as well? If not, I'm afraid we cannot really help and you should contact the vendor! -- Cheers, David / dhildenb