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 C3C9FC3DA6E for ; Wed, 3 Jan 2024 12:13:44 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 3D4448D0067; Wed, 3 Jan 2024 07:13:44 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 3845F8D0061; Wed, 3 Jan 2024 07:13:44 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 225D88D0067; Wed, 3 Jan 2024 07:13:44 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id 120738D0061 for ; Wed, 3 Jan 2024 07:13:44 -0500 (EST) Received: from smtpin01.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay03.hostedemail.com (Postfix) with ESMTP id D98CBA0839 for ; Wed, 3 Jan 2024 12:13:43 +0000 (UTC) X-FDA: 81637890726.01.26B04E4 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by imf20.hostedemail.com (Postfix) with ESMTP id C63851C0010 for ; Wed, 3 Jan 2024 12:13:40 +0000 (UTC) Authentication-Results: imf20.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b=C0IEQlQk; dmarc=pass (policy=none) header.from=redhat.com; spf=pass (imf20.hostedemail.com: domain of david@redhat.com designates 170.10.133.124 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=1704284020; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to: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=0J0K7xuef0kqeIZ96WnnWuSpiDfZnFX1Ah8cWG+NTJo=; b=dMk4eRXmoQ+cRmlfD2yhwhMemuceAuYcSCArZ2BaZOpaDGYUQEwwWRHmunCGedcRgdRhM7 gviXlmLTaXxTLFM3Xjwza6Gw0R6/q2VnDzE3OW2OMvXGZxq5HgvPnRfd2bneUAB7RE3no8 uGYk6jlbuxo0xzLA+lCKE4BiY0GHWcQ= ARC-Authentication-Results: i=1; imf20.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b=C0IEQlQk; dmarc=pass (policy=none) header.from=redhat.com; spf=pass (imf20.hostedemail.com: domain of david@redhat.com designates 170.10.133.124 as permitted sender) smtp.mailfrom=david@redhat.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1704284020; a=rsa-sha256; cv=none; b=DDNihfRSTIELS5iw7e3+9AKhbn2WZWe0G8sRGC3SHAryL6w7NeQ91cLaVmImdiyDwZ2X/D aV2PTtg2MGi0UPz4cIu5x/PE726bSqlfLJ3wTOCv8Svx0hqar75YWlkytHD6KLwybd+FE6 9l8hnwVG1h1ptzXA9ol10IvF9tHLZWg= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1704284020; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to: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=0J0K7xuef0kqeIZ96WnnWuSpiDfZnFX1Ah8cWG+NTJo=; b=C0IEQlQkJowgSfD0g78zRK3zm3GjLjgJTDxLOhvvmGyeMBAN6TWDr4oWYqYrKBRqRcA8F4 /W1BIPEDr7WSux+fUiGEAS903lMdrV8Lp7FJqjJfOTo+rBl+x2cRnqlRwi5g13BNzvY6LV 1ntBmEifOXMzhDUlKZ2Maz+njWqIDnM= Received: from mail-lf1-f70.google.com (mail-lf1-f70.google.com [209.85.167.70]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-52-dJ5M9bjhM2iLLVCUou-XSA-1; Wed, 03 Jan 2024 07:13:38 -0500 X-MC-Unique: dJ5M9bjhM2iLLVCUou-XSA-1 Received: by mail-lf1-f70.google.com with SMTP id 2adb3069b0e04-50e7d1cf532so6010167e87.2 for ; Wed, 03 Jan 2024 04:13:38 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1704284017; x=1704888817; h=content-transfer-encoding:in-reply-to:organization:autocrypt:from :content-language:references:to:subject:user-agent:mime-version:date :message-id:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=0J0K7xuef0kqeIZ96WnnWuSpiDfZnFX1Ah8cWG+NTJo=; b=aiVhBZs3EzEqQZsTCdt6yIpdxTgiHR9WgFnmU+NZX1HrQi+NGF+hljcCaXL11CbLgV J2/nQ43dqPXZ3dA+HS5hKvttQM/X6B+IkrDC4TM2wAOB69SIAoD4GQ5xcKl3LR1GcReD qlpWp9RtW2sqDMX9l7n5gE8fTd9INMegsxMiLbhKfTd35ElZiHnATlPv13k3sw58F3Y8 ymlan4+Ag70OCFgwYEcbeHfmqTGNH8pq+8krAMBg8ZWZfQd5SjspXSmOUuhyDuDhCmCS 7oeRV0SBrfdAUQsECsGoFrG0ietTc038w3iCPRe3KH2j0OKlMsuNIbmLlY6Wxf5pPKKF rFOQ== X-Gm-Message-State: AOJu0YzPG7beRKL8SKxgbwoXMHK/GqkbICxDKlM/WTCF998/kQlNH6bK rbROD9WX29JzeSbUUFBcekrPatlPb3DOylqjourzrrq8cUaR+DCmWueguKsy/BdRcPCopYubLGd 3QWurmsOHidtqFRNRj3o= X-Received: by 2002:a05:6512:3b28:b0:50e:7f88:d34e with SMTP id f40-20020a0565123b2800b0050e7f88d34emr7459094lfv.33.1704284016918; Wed, 03 Jan 2024 04:13:36 -0800 (PST) X-Google-Smtp-Source: AGHT+IEdkYLxCPAgy63gMYrJkyCZinBjCqRvlXb6tE29e4dJHblYv2sHiQv9RFu2GCiHUv2Tzmd+hQ== X-Received: by 2002:a05:6512:3b28:b0:50e:7f88:d34e with SMTP id f40-20020a0565123b2800b0050e7f88d34emr7459086lfv.33.1704284016509; Wed, 03 Jan 2024 04:13:36 -0800 (PST) Received: from ?IPV6:2003:cb:c706:1600:effa:3605:c339:3ba0? (p200300cbc7061600effa3605c3393ba0.dip0.t-ipconnect.de. [2003:cb:c706:1600:effa:3605:c339:3ba0]) by smtp.gmail.com with ESMTPSA id v10-20020a05600c470a00b0040d839e7bb3sm2147504wmo.19.2024.01.03.04.13.35 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 03 Jan 2024 04:13:35 -0800 (PST) Message-ID: Date: Wed, 3 Jan 2024 13:13:34 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [syzbot] [mm?] WARNING in __folio_rmap_sanity_checks To: syzbot , akpm@linux-foundation.org, fengwei.yin@intel.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, ryan.roberts@arm.com, syzkaller-bugs@googlegroups.com, Matthew Wilcox References: <000000000000014174060e09316e@google.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: <000000000000014174060e09316e@google.com> X-Mimecast-Spam-Score: 1 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: C63851C0010 X-Rspam-User: X-Rspamd-Server: rspam02 X-Stat-Signature: a3w381bgbjf9je4jbweprtt1j4isdot8 X-HE-Tag: 1704284020-628374 X-HE-Meta: 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 WpM5DBhG YZFjBXIKMhj0s5cYAq3JI35fNpw2nVyT/gFIgNmPSjqElq/RcNjxfJ+F19JKYrnz2hps68WRQUbESYTmRTylkgk/5OL+GcPzn9XzREea3Cynd9rn1775sGzfXE2ofBV1t4+lvSM71XYqkHRIbFGMj/Ps9yQ3F8nvhifVdahpCn6nB9sjUzC2/M8OCOTqfD1zs8euzl0BLS0n2z7DoeOU9sfuYteWLmT5FOgI7ip+owlsqqz0fe4u7gGvjH2qyLRMEQXawMc2XBlfbEN88b4M0pJUqz9EvaulWc6MgbSpDS8re+m2j0LL7YB9pNgHaK3H3QoENPnoq3hc9ladKscYNsEOEkilRDxpxcjbhjySgOgIIGM8IeYU15kPjGFXOW7FkBIUDhD3MIdaaMJx6wX2l+jQ9pKr0gkDcFw6Ix4WK58dbQy3eiKaib7/VkNmfAMwpwVcILOs81KN08893bE91FtSrAQ== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, 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 03.01.24 12:48, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: ab0b3e6ef50d Add linux-next specific files for 20240102 > git tree: linux-next > console+strace: https://syzkaller.appspot.com/x/log.txt?x=17be3e09e80000 > kernel config: https://syzkaller.appspot.com/x/.config?x=a14a6350374945f9 > dashboard link: https://syzkaller.appspot.com/bug?extid=50ef73537bbc393a25bb > compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14e2256ee80000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17b57db5e80000 > > Downloadable assets: > disk image: https://storage.googleapis.com/syzbot-assets/4e6376fe5764/disk-ab0b3e6e.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/7cb9ecbaf001/vmlinux-ab0b3e6e.xz > kernel image: https://storage.googleapis.com/syzbot-assets/2c1a9a6d424f/bzImage-ab0b3e6e.xz > > The issue was bisected to: > > commit 68f0320824fa59c5429cbc811e6c46e7a30ea32c > Author: David Hildenbrand > Date: Wed Dec 20 22:44:31 2023 +0000 > > mm/rmap: convert folio_add_file_rmap_range() into folio_add_file_rmap_[pte|ptes|pmd]() > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=10b9e1b1e80000 > final oops: https://syzkaller.appspot.com/x/report.txt?x=12b9e1b1e80000 > console output: https://syzkaller.appspot.com/x/log.txt?x=14b9e1b1e80000 > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+50ef73537bbc393a25bb@syzkaller.appspotmail.com > Fixes: 68f0320824fa ("mm/rmap: convert folio_add_file_rmap_range() into folio_add_file_rmap_[pte|ptes|pmd]()") > > kasan_quarantine_reduce+0x18e/0x1d0 mm/kasan/quarantine.c:283 > __kasan_slab_alloc+0x65/0x90 mm/kasan/common.c:324 > kasan_slab_alloc include/linux/kasan.h:201 [inline] > slab_post_alloc_hook mm/slub.c:3813 [inline] > slab_alloc_node mm/slub.c:3860 [inline] > kmem_cache_alloc+0x136/0x320 mm/slub.c:3867 > vm_area_alloc+0x1f/0x220 kernel/fork.c:465 > mmap_region+0x3ae/0x2a90 mm/mmap.c:2804 > do_mmap+0x890/0xef0 mm/mmap.c:1379 > vm_mmap_pgoff+0x1a7/0x3c0 mm/util.c:573 > ksys_mmap_pgoff+0x421/0x5a0 mm/mmap.c:1425 > __do_sys_mmap arch/x86/kernel/sys_x86_64.c:93 [inline] > __se_sys_mmap arch/x86/kernel/sys_x86_64.c:86 [inline] > __x64_sys_mmap+0x125/0x190 arch/x86/kernel/sys_x86_64.c:86 > do_syscall_x64 arch/x86/entry/common.c:52 [inline] > do_syscall_64+0xd0/0x250 arch/x86/entry/common.c:83 > entry_SYSCALL_64_after_hwframe+0x62/0x6a > ------------[ cut here ]------------ > WARNING: CPU: 1 PID: 5059 at include/linux/rmap.h:202 __folio_rmap_sanity_checks+0x4d5/0x630 include/linux/rmap.h:202 > Modules linked in: > CPU: 1 PID: 5059 Comm: syz-executor115 Not tainted 6.7.0-rc8-next-20240102-syzkaller #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 > RIP: 0010:__folio_rmap_sanity_checks+0x4d5/0x630 include/linux/rmap.h:202 > Code: 41 83 e4 01 44 89 e6 e8 79 bc b7 ff 45 84 e4 0f 85 08 fc ff ff e8 3b c1 b7 ff 48 c7 c6 e0 b5 d9 8a 48 89 df e8 5c 12 f7 ff 90 <0f> 0b 90 e9 eb fb ff ff e8 1e c1 b7 ff be 01 00 00 00 48 89 df e8 > RSP: 0018:ffffc900038df978 EFLAGS: 00010293 > RAX: 0000000000000000 RBX: ffffea00008cde00 RCX: ffffffff81687419 > RDX: ffff88807becbb80 RSI: ffffffff81d06104 RDI: 0000000000000000 > RBP: ffffea00008cde00 R08: 0000000000000000 R09: fffffbfff1e75f6a > R10: ffffffff8f3afb57 R11: 0000000000000001 R12: 0000000000000000 > R13: 0000000000000001 R14: 0000000000000000 R15: dffffc0000000000 > FS: 0000555556508380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 00000000200000c0 CR3: 0000000079000000 CR4: 00000000003506f0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > Call Trace: > > __folio_add_rmap mm/rmap.c:1167 [inline] > __folio_add_file_rmap mm/rmap.c:1452 [inline] > folio_add_file_rmap_ptes+0x8e/0x2c0 mm/rmap.c:1478 > insert_page_into_pte_locked.isra.0+0x34d/0x960 mm/memory.c:1874 > insert_page mm/memory.c:1900 [inline] > vm_insert_page+0x62c/0x8c0 mm/memory.c:2053 > packet_mmap+0x314/0x570 net/packet/af_packet.c:4594 > call_mmap include/linux/fs.h:2090 [inline] > mmap_region+0x745/0x2a90 mm/mmap.c:2819 > do_mmap+0x890/0xef0 mm/mmap.c:1379 > vm_mmap_pgoff+0x1a7/0x3c0 mm/util.c:573 > ksys_mmap_pgoff+0x421/0x5a0 mm/mmap.c:1425 > __do_sys_mmap arch/x86/kernel/sys_x86_64.c:93 [inline] > __se_sys_mmap arch/x86/kernel/sys_x86_64.c:86 [inline] > __x64_sys_mmap+0x125/0x190 arch/x86/kernel/sys_x86_64.c:86 > do_syscall_x64 arch/x86/entry/common.c:52 [inline] > do_syscall_64+0xd0/0x250 arch/x86/entry/common.c:83 > entry_SYSCALL_64_after_hwframe+0x62/0x6a If I am not wrong, that triggers: VM_WARN_ON_FOLIO(folio_test_large(folio) && !folio_test_large_rmappable(folio), folio); So we are trying to rmap a large folio that did not go through folio_prep_large_rmappable(). net/packet/af_packet.c calls vm_insert_page() on some pages/folios stoed in the "struct packet_ring_buffer". No idea where that comes from, but I suspect it's simply some compound allocation. Likely, rmap handling is completely bogus for these folios? -- Cheers, David / dhildenb