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[2003:cb:c72f:c700:a76f:473d:d5cf:25a8]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-37d1695e5fbsm8103565f8f.73.2024.10.08.06.11.15 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 08 Oct 2024 06:11:15 -0700 (PDT) Message-ID: <5e42fd02-1470-4e4e-892b-edefd32fbc5a@redhat.com> Date: Tue, 8 Oct 2024 15:11:14 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [syzbot] [mm?] linux-next test error: kernel BUG in folio_add_new_anon_rmap To: syzbot , akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-next@vger.kernel.org, sfr@canb.auug.org.au, syzkaller-bugs@googlegroups.com References: <6704d667.050a0220.1e4d62.0082.GAE@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: <6704d667.050a0220.1e4d62.0082.GAE@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-Stat-Signature: y4di586ocxxojruspk66ja5t9z7psg9r X-Rspamd-Queue-Id: E015740013 X-Rspam-User: X-Rspamd-Server: rspam10 X-HE-Tag: 1728393079-417346 X-HE-Meta: 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 f13UbFMg yY7XhCOeXXfAJnCSspCtp0e5KXqx9zhkUUpK2CK4RF5EIfJAj7eIz4EYG+nfKsnpm/cGwfaTFVZqKvXkCYZJuScWAwIfqFecyj8emm2o+Nx97B8wJoteaFNMF2O/hXd/dK8HW5eJjtve3eqZWD4PgiCANxy4TvP0ZsDNXLTBQ8JMBfmT193epsKYgDU2kdiX9wjlxmPa8PA4cb7IgOAIf4OTcrEe0CaTNBGyYc3T8YkpIA1wHrWzdM6d6rPoOX0brRjGuwCssJGelaUYwwNtNjHrtZS0LMSILJ6RIUBMbukhtiKzJfSE0eEqpHZsohz+goIRdnCAqv+FBKOTNoWOyuuNYi7sG4dFnsUJsFmKduFLjwIHLjY5bDG6KNIlY608AHHyKKQaLUE2H/POPX1+4UT2CncVLFPzIeL8ag3KqnUMEAjw9IPgCs1SOZ+1TYui35eyD6OPtt36vnCpU0HPcqFpwvDLjt7gl4a1l02UxMV73R4LthO3j5MwaRaGXmaukUdt7QF67T/IsU9o5oh1ZnpFUyG42EyhypsT4seDlQpC0PTd3Ly0nqdLiNZpUI8VYY0812OgB3mzzQoMT059RmRj9iFMdAduvUofS7YNm87XU3UYFVy3PND1udtD2dUt9fXNl/dvRchQ5UsfMvyfzveDiS2vd4hyUfC4n788sOeD0Av+T9aySEsoeGBlTBhQBIFZ1rm+6ZNMcRFBtp4BoOD3Ab/zB5NRSsICY+e8zRarTpB7pHrGui29EOWRCDQPyklXyW8l7L3JcbPAvkESSrOjZA3dW/dbgHV0QXOhldBamMGshA0jiBkUiGdq2rhf9xIiWwewVhieK5lTy3uqKsbLKRH/2NyEqbdtNkTFPHVbygMCg/tQtO7+KQZK1xvMLLGSx6Uo5XOOCPQuW2J1PLzCzfvz7kXiHwvzv6oJulIZiIsjQAA8Ktf8okZbjhPoTx+by//TVzIeiV+1w75ELedsyWnAw sKu8lMh3 ltUqKfMk03o5NqNBBqqEJzpITlGyLWUdBVeX23QXDszXzCfGqEif0q1FwG4kvWLtYJvq8v2uTCbjVuSnY9PseLjeK7SfraCq+JWtcdugPuLcNAzwnsJpN7A32NAoYxwRkw1bq+CGdnMzCiY2b+0T9S0KSPTtcO7RsS88PuLR8krwn1ik5X+pSa8yFdRXU7KNgW8Wp5QDdvXi3qesCpwq1W8+tcuCylSGj9MtlFayiobN7QIAN7ZmN1LB6cnhDcj9f50w0kbCOQY= 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 08.10.24 08:51, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: 58ca61c1a866 Add linux-next specific files for 20241004 > git tree: linux-next > console output: https://syzkaller.appspot.com/x/log.txt?x=1265e7d0580000 > kernel config: https://syzkaller.appspot.com/x/.config?x=94f9caf16c0af42d > dashboard link: https://syzkaller.appspot.com/bug?extid=619c487ed60780dab217 > compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 > > Downloadable assets: > disk image: https://storage.googleapis.com/syzbot-assets/ff0999f3e964/disk-58ca61c1.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/d0d9a5bad786/vmlinux-58ca61c1.xz > kernel image: https://storage.googleapis.com/syzbot-assets/3b53cdc9ba34/bzImage-58ca61c1.xz > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+619c487ed60780dab217@syzkaller.appspotmail.com > > cfg80211: Loading compiled-in X.509 certificates for regulatory database > Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7' > Loaded X.509 cert 'wens: 61c038651aabdcf94bd0ac7ff06c7248db18c600' > clk: Disabling unused clocks > ALSA device list: > #0: Dummy 1 > #1: Loopback 1 > #2: Virtual MIDI Card 1 > md: Waiting for all devices to be available before autodetect > md: If you don't use raid, use raid=noautodetect > md: Autodetecting RAID arrays. > md: autorun ... > md: ... autorun DONE. > EXT4-fs (sda1): mounted filesystem b4773fba-1738-4da0-8a90-0fe043d0a496 ro with ordered data mode. Quota mode: none. > VFS: Mounted root (ext4 filesystem) readonly on device 8:1. > devtmpfs: mounted > Freeing unused kernel image (initmem) memory: 26720K > Write protecting the kernel read-only data: 219136k > Freeing unused kernel image (rodata/data gap) memory: 1108K > x86/mm: Checked W+X mappings: passed, no W+X pages found. > x86/mm: Checking user space page tables > x86/mm: Checked W+X mappings: passed, no W+X pages found. > Failed to set sysctl parameter 'max_rcu_stall_to_panic=1': parameter not found > Run /sbin/init as init process > page: refcount:1 mapcount:1 mapping:0000000000000000 index:0x7fffffffe pfn:0x13fe93 > memcg:ffff888140adc000 > anon flags: 0x17ff00000020008(uptodate|swapbacked|node=0|zone=2|lastcpupid=0x7ff) > raw: 017ff00000020008 0000000000000000 dead000000000122 ffff888030587001 > raw: 00000007fffffffe 0000000000000000 0000000100000000 ffff888140adc000 > page dumped because: VM_BUG_ON_PAGE(PageAnonNotKsm(page)) > page_owner tracks the page as allocated > page last allocated via order 0, migratetype Movable, gfp_mask 0x140dca(GFP_HIGHUSER_MOVABLE|__GFP_COMP|__GFP_ZERO), pid 1, tgid 1 (swapper/0), ts 14891998308, free_ts 0 > set_page_owner include/linux/page_owner.h:32 [inline] > post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1537 > prep_new_page mm/page_alloc.c:1545 [inline] > get_page_from_freelist+0x3129/0x3270 mm/page_alloc.c:3493 > __alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4769 > alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2265 > folio_alloc_mpol_noprof mm/mempolicy.c:2283 [inline] > vma_alloc_folio_noprof+0x12e/0x230 mm/mempolicy.c:2314 > folio_prealloc+0x31/0x170 > alloc_anon_folio mm/memory.c:4738 [inline] > do_anonymous_page mm/memory.c:4795 [inline] > do_pte_missing mm/memory.c:3971 [inline] > handle_pte_fault+0x2518/0x6830 mm/memory.c:5778 > __handle_mm_fault mm/memory.c:5921 [inline] > handle_mm_fault+0x1106/0x1bb0 mm/memory.c:6089 > faultin_page mm/gup.c:1187 [inline] > __get_user_pages+0x1b16/0x48d0 mm/gup.c:1485 > __get_user_pages_locked mm/gup.c:1751 [inline] > get_user_pages_remote+0x31e/0xb60 mm/gup.c:2618 > get_arg_page+0x266/0x580 fs/exec.c:225 > copy_string_kernel+0x148/0x1f0 fs/exec.c:684 > kernel_execve+0x5e2/0xa50 fs/exec.c:1999 > try_to_run_init_process init/main.c:1394 [inline] > kernel_init+0xed/0x2b0 init/main.c:1522 > ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 > ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 > page_owner free stack trace missing > ------------[ cut here ]------------ > kernel BUG at include/linux/page-flags.h:1134! > Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI > CPU: 1 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.12.0-rc1-next-20241004-syzkaller #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 > RIP: 0010:SetPageAnonExclusive include/linux/page-flags.h:1134 [inline] > RIP: 0010:folio_add_new_anon_rmap+0x14d3/0x1fe0 mm/rmap.c:1442 > Code: ff 0f 00 00 0f 84 9e 02 00 00 e8 28 91 a9 ff e9 fa ec ff ff e8 1e 91 a9 ff 48 8b 3c 24 48 c7 c6 e0 ff 15 8c e8 3e 13 f5 ff 90 <0f> 0b e8 06 91 a9 ff 48 89 ef 48 c7 c6 a0 00 16 8c e8 27 13 f5 ff > RSP: 0000:ffffc90000067348 EFLAGS: 00010246 > RAX: 3219d577e7cba600 RBX: 0000000000000001 RCX: ffffc90000066f03 > RDX: 0000000000000003 RSI: ffffffff8c0adc40 RDI: ffffffff8c610f60 > RBP: 0000000000000000 R08: ffffffff901d2caf R09: 1ffffffff203a595 > R10: dffffc0000000000 R11: fffffbfff203a596 R12: 00000007fffffffe > R13: 1ffff1100614ca00 R14: ffff888030587001 R15: ffff888030a65078 > FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 0000000000000000 CR3: 000000000e734000 CR4: 00000000003526f0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > Call Trace: > > do_anonymous_page mm/memory.c:4841 [inline] > do_pte_missing mm/memory.c:3971 [inline] > handle_pte_fault+0x4aec/0x6830 mm/memory.c:5778 > __handle_mm_fault mm/memory.c:5921 [inline] > handle_mm_fault+0x1106/0x1bb0 mm/memory.c:6089 > faultin_page mm/gup.c:1187 [inline] > __get_user_pages+0x1b16/0x48d0 mm/gup.c:1485 > __get_user_pages_locked mm/gup.c:1751 [inline] > get_user_pages_remote+0x31e/0xb60 mm/gup.c:2618 > get_arg_page+0x266/0x580 fs/exec.c:225 > copy_string_kernel+0x148/0x1f0 fs/exec.c:684 > kernel_execve+0x5e2/0xa50 fs/exec.c:1999 > try_to_run_init_process init/main.c:1394 [inline] > kernel_init+0xed/0x2b0 init/main.c:1522 > ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 > ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 > > Modules linked in: > ---[ end trace 0000000000000000 ]--- > RIP: 0010:SetPageAnonExclusive include/linux/page-flags.h:1134 [inline] > RIP: 0010:folio_add_new_anon_rmap+0x14d3/0x1fe0 mm/rmap.c:1442 > Code: ff 0f 00 00 0f 84 9e 02 00 00 e8 28 91 a9 ff e9 fa ec ff ff e8 1e 91 a9 ff 48 8b 3c 24 48 c7 c6 e0 ff 15 8c e8 3e 13 f5 ff 90 <0f> 0b e8 06 91 a9 ff 48 89 ef 48 c7 c6 a0 00 16 8c e8 27 13 f5 ff > RSP: 0000:ffffc90000067348 EFLAGS: 00010246 > RAX: 3219d577e7cba600 RBX: 0000000000000001 RCX: ffffc90000066f03 > RDX: 0000000000000003 RSI: ffffffff8c0adc40 RDI: ffffffff8c610f60 > RBP: 0000000000000000 R08: ffffffff901d2caf R09: 1ffffffff203a595 > R10: dffffc0000000000 R11: fffffbfff203a596 R12: 00000007fffffffe > R13: 1ffff1100614ca00 R14: ffff888030587001 R15: ffff888030a65078 > FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 0000000000000000 CR3: 000000000e734000 CR4: 00000000003526f0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > > > --- > This report is generated by a bot. It may contain errors. > See https://goo.gl/tpsmEJ for more information about syzbot. > syzbot engineers can be reached at syzkaller@googlegroups.com. > > syzbot will keep track of this issue. See: > https://goo.gl/tpsmEJ#status for how to communicate with syzbot. > > If the report is already addressed, let syzbot know by replying with: > #syz fix: exact-commit-title > > If you want to overwrite report's subsystems, reply with: > #syz set subsystems: new-subsystem > (See the list of subsystem names on the web dashboard) > > If the report is a duplicate of another one, reply with: > #syz dup: exact-subject-of-another-report > > If you want to undo deduplication, reply with: > #syz undup > #syz fix: mm-add-pageanonnotksm-fix -- Cheers, David / dhildenb