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[2003:cb:c707:2400:68a3:92e0:906f:b69d]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-37ecf118b67sm1674741f8f.99.2024.10.18.04.20.39 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 18 Oct 2024 04:20:40 -0700 (PDT) Message-ID: <0a1dcac5-9897-4667-9b35-04ccf7506437@redhat.com> Date: Fri, 18 Oct 2024 13:20:39 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: WARNING in get_pat_info To: lee bruce , dave.hansen@linux.intel.com, linux-kernel@vger.kernel.org, luto@kernel.org, peterz@infradead.org Cc: bp@alien8.de, hpa@zytor.com, mingo@redhat.com, Thomas Gleixner , x86@kernel.org, wang1315768607@163.com, syzkaller@googlegroups.com References: From: David Hildenbrand Content-Language: en-US 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: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 16.08.24 11:44, lee bruce wrote: > Hello, I found a bug titled "WARNING in get_pat_info" with modified > syzkaller in the lasted upstream and lasted mm branches. > > If you fix this issue, please add the following tag to the commit: > Reported-by: xingwei lee > Reported-by: yuxin wang > > TITLE: WARNING in get_pat_info > ------------[ cut here ]------------ > WARNING: CPU: 2 PID: 12458 at arch/x86/mm/pat/memtype.c:1002 > get_pat_info+0x4b6/0x5c0 arch/x86/mm/pat/memtype.c:1002 > arch/x86/mm/pat/memtype.c:1002 > Modules linked in: > CPU: 2 PID: 12458 Comm: syz-executor.0 Not tainted 6.10.0 #1 > Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS > 1.16.2-debian-1.16.2-1 04/01/2014 > RIP: 0010:get_pat_info+0x4b6/0x5c0 arch/x86/mm/pat/memtype.c:1002 > arch/x86/mm/pat/memtype.c:1002 > Code: 00 00 00 48 89 de e8 79 28 54 00 48 83 fb 20 75 11 48 83 7c 24 > 18 00 74 6e 31 ff e8 74 23 54 00 eb 0b 31 ff e8 6b 23 54 00 90 <0f> 0b > 90 bb ea ff ff ff 48 c7 44 24 40 0e 36 e0 45 4b c7 44 25 00 > RSP: 0018:ffffc9000f3ff2a0 EFLAGS: 00010246 > RAX: ffffffff81453f35 RBX: 0000000000000000 RCX: ffffc90013051000 > RDX: ffffffff81453f35 RSI: 0000000000000000 RDI: 0000000000000000 > RBP: ffffc9000f3ff3b0 R08: 000000000001fcbe R09: 000000000001fcbf > R10: dffffc0000000000 R11: fffffbfff1fdc6f6 R12: 1ffff92001e7fe5c > R13: dffffc0000000000 R14: 1ffff92001e7fe64 R15: 1ffff92001e7fe68 > FS: 00007fb3403356c0(0000) GS:ffff888063500000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 00007f74b7104000 CR3: 000000001c1ce000 CR4: 0000000000752ef0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > PKRU: 55555554 > Call Trace: > > untrack_pfn+0x338/0x660 arch/x86/mm/pat/memtype.c:1104 > arch/x86/mm/pat/memtype.c:1104 > unmap_single_vma+0x20c/0x2c0 mm/memory.c:1819 mm/memory.c:1819 > unmap_vmas+0x3d7/0x600 mm/memory.c:1885 mm/memory.c:1885 > exit_mmap+0x279/0xce0 mm/mmap.c:3341 mm/mmap.c:3341 > __mmput+0x120/0x3a0 kernel/fork.c:1343 kernel/fork.c:1343 > mmput kernel/fork.c:1365 [inline] > dup_mm kernel/fork.c:1687 [inline] > mmput kernel/fork.c:1365 [inline] kernel/fork.c:1720 > dup_mm kernel/fork.c:1687 [inline] kernel/fork.c:1720 > copy_mm+0x1a5b/0x1fe0 kernel/fork.c:1720 kernel/fork.c:1720 > copy_process+0x1cc7/0x3f70 kernel/fork.c:2373 kernel/fork.c:2373 > kernel_clone+0x236/0x910 kernel/fork.c:2780 kernel/fork.c:2780 > __do_sys_clone kernel/fork.c:2923 [inline] > __se_sys_clone kernel/fork.c:2907 [inline] > __do_sys_clone kernel/fork.c:2923 [inline] kernel/fork.c:2907 > __se_sys_clone kernel/fork.c:2907 [inline] kernel/fork.c:2907 > __x64_sys_clone+0x25d/0x2b0 kernel/fork.c:2907 kernel/fork.c:2907 > do_syscall_x64 arch/x86/entry/common.c:52 [inline] > do_syscall_x64 arch/x86/entry/common.c:52 [inline] arch/x86/entry/common.c:83 > do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 arch/x86/entry/common.c:83 > entry_SYSCALL_64_after_hwframe+0x77/0x7f > RIP: 0033:0x7fb33f67dde9 > Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 > 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d > 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 > RSP: 002b:00007fb340335078 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 > RAX: ffffffffffffffda RBX: 00007fb33f7abf80 RCX: 00007fb33f67dde9 > RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 > RBP: 00007fb340335120 R08: 0000000000000000 R09: 0000000000000000 > R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 > R13: 000000000000000b R14: 00007fb33f7abf80 R15: 00007ffd35a9fb48 > > > > I use the same kernel as syzbot instance > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=122bfdb8980000 > kernel config: https://syzkaller.appspot.com/text?tag=KernelConfig&x=8e5f5ae13ab96e5e > compiler: clang version 15.0.6 > > =* repro.c =* Simply compiling repro.c and running it does not seem to reproduce this for me. Can you please share the detailed steps to get this reproduced? -- Cheers, David / dhildenb