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[2003:cb:c714:1600:f3b:67cc:3b88:620e]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-434b0dbf9f5sm21443275e9.16.2024.11.28.04.57.55 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 28 Nov 2024 04:57:56 -0800 (PST) Message-ID: <57f0859b-4c30-4c72-9796-e8e6f836e509@redhat.com> Date: Thu, 28 Nov 2024 13:57:55 +0100 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: [syzbot] [mm?] kernel BUG in const_folio_flags (2) To: syzbot , akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, syzkaller-bugs@googlegroups.com References: <674184c9.050a0220.1cc393.0001.GAE@google.com> From: David Hildenbrand Content-Language: en-US Autocrypt: addr=david@redhat.com; keydata= xsFNBFXLn5EBEAC+zYvAFJxCBY9Tr1xZgcESmxVNI/0ffzE/ZQOiHJl6mGkmA1R7/uUpiCjJ dBrn+lhhOYjjNefFQou6478faXE6o2AhmebqT4KiQoUQFV4R7y1KMEKoSyy8hQaK1umALTdL 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jPrnvUsUUsjRoRNJjKKA/REq+sAnhkNPPZ/NNMjaZ5b8Tovi8C0tmxiCHaQYqj7G2rgnT0kt WNyWQQ== Organization: Red Hat In-Reply-To: <674184c9.050a0220.1cc393.0001.GAE@google.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 23.11.24 08:31, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: 9fb2cfa4635a Merge tag 'pull-ufs' of git://git.kernel.org/.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=10042930580000 > kernel config: https://syzkaller.appspot.com/x/.config?x=c4515f1b6a4e50b7 > dashboard link: https://syzkaller.appspot.com/bug?extid=9f9a7f73fb079b2387a6 > 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=105ff2e8580000 > > Downloadable assets: > disk image: https://storage.googleapis.com/syzbot-assets/7c0c61a15f60/disk-9fb2cfa4.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/3363d84eeb74/vmlinux-9fb2cfa4.xz > kernel image: https://storage.googleapis.com/syzbot-assets/2b1a270af550/bzImage-9fb2cfa4.xz > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+9f9a7f73fb079b2387a6@syzkaller.appspotmail.com > > madvise_pageout_page_range mm/madvise.c:609 [inline] > madvise_pageout+0x326/0x820 mm/madvise.c:636 > madvise_vma_behavior+0x58c/0x19e0 mm/madvise.c:1045 > madvise_walk_vmas+0x1cf/0x2c0 mm/madvise.c:1274 > do_madvise+0x29d/0x700 mm/madvise.c:1461 > __do_sys_madvise mm/madvise.c:1477 [inline] > __se_sys_madvise mm/madvise.c:1475 [inline] > __x64_sys_madvise+0xa9/0x110 mm/madvise.c:1475 > do_syscall_x64 arch/x86/entry/common.c:52 [inline] > do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 > ------------[ cut here ]------------ > kernel BUG at include/linux/page-flags.h:309! > Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI > CPU: 0 UID: 0 PID: 7269 Comm: syz.1.183 Not tainted 6.12.0-syzkaller-00233-g9fb2cfa4635a #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 > RIP: 0010:const_folio_flags.constprop.0+0x12e/0x150 include/linux/page-flags.h:309 > Code: 86 cb ff e8 f4 86 cb ff 48 8d 45 ff 48 39 c3 0f 84 38 ff ff ff e8 e2 86 cb ff 48 c7 c6 00 19 58 8b 48 89 df e8 e3 4b 11 00 90 <0f> 0b e8 6b 0d 2d 00 e9 f1 fe ff ff e8 61 0d 2d 00 eb a3 48 89 df > RSP: 0018:ffffc9000c55ee30 EFLAGS: 00010293 > RAX: 0000000000000000 RBX: ffffea0000496f80 RCX: ffffc9000c55ecd8 > RDX: ffff88805f401e00 RSI: ffffffff81c1362d RDI: ffff88805f402244 > RBP: 0000000000000001 R08: 0000000000000000 R09: fffffbfff203a591 > R10: ffffffff901d2c8f R11: 0000000000000001 R12: 00000000000014df > R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920018abdf4 > FS: 00007f08b31bc6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 000000c0025ff000 CR3: 00000000341ce000 CR4: 00000000003526f0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > Call Trace: > > folio_test_locked include/linux/page-flags.h:509 [inline] > next_uptodate_folio+0xac/0x4b0 mm/filemap.c:3505 > filemap_map_pages+0x1c6/0x16a0 mm/filemap.c:3647 > do_fault_around mm/memory.c:5255 [inline] > do_read_fault mm/memory.c:5288 [inline] > do_fault mm/memory.c:5431 [inline] > do_pte_missing+0xdae/0x3e70 mm/memory.c:3965 > handle_pte_fault mm/memory.c:5766 [inline] > __handle_mm_fault+0x100a/0x2a10 mm/memory.c:5909 > handle_mm_fault+0x3fa/0xaa0 mm/memory.c:6077 > faultin_page mm/gup.c:1187 [inline] > __get_user_pages+0x8d9/0x3b50 mm/gup.c:1485 > __get_user_pages_locked mm/gup.c:1751 [inline] > get_dump_page+0xfb/0x220 mm/gup.c:2269 > dump_user_range+0x135/0x8c0 fs/coredump.c:943 > elf_core_dump+0x2766/0x3840 fs/binfmt_elf.c:2121 > do_coredump+0x2c42/0x4160 fs/coredump.c:758 > get_signal+0x237c/0x26d0 kernel/signal.c:2903 > arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337 > exit_to_user_mode_loop kernel/entry/common.c:111 [inline] > exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] > irqentry_exit_to_user_mode+0x13f/0x280 kernel/entry/common.c:231 > asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 > RIP: 0033:0x1000 > Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > RSP: 002b:000000000000010c EFLAGS: 00010246 > RAX: 0000000000000000 RBX: 00007f08b41363b8 RCX: 00007f08b3f7e759 > RDX: ffffffffff600000 RSI: 0000000000000104 RDI: 8000000000000000 > RBP: 00007f08b3ff175e R08: 0000000100000000 R09: 0000000000000000 > R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 > R13: 0000000000000000 R14: 00007f08b41363b8 R15: 00007fff7656a008 > > Modules linked in: > ---[ end trace 0000000000000000 ]--- > RIP: 0010:const_folio_flags.constprop.0+0x12e/0x150 include/linux/page-flags.h:309 > Code: 86 cb ff e8 f4 86 cb ff 48 8d 45 ff 48 39 c3 0f 84 38 ff ff ff e8 e2 86 cb ff 48 c7 c6 00 19 58 8b 48 89 df e8 e3 4b 11 00 90 <0f> 0b e8 6b 0d 2d 00 e9 f1 fe ff ff e8 61 0d 2d 00 eb a3 48 89 df > RSP: 0018:ffffc9000c55ee30 EFLAGS: 00010293 > RAX: 0000000000000000 RBX: ffffea0000496f80 RCX: ffffc9000c55ecd8 > RDX: ffff88805f401e00 RSI: ffffffff81c1362d RDI: ffff88805f402244 > RBP: 0000000000000001 R08: 0000000000000000 R09: fffffbfff203a591 > R10: ffffffff901d2c8f R11: 0000000000000001 R12: 00000000000014df > R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920018abdf4 > FS: 00007f08b31bc6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 00007fff76568ff8 CR3: 00000000341ce000 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 syzbot to run the reproducer, reply with: > #syz test: git://repo/address.git branch-or-commit-hash > If you attach or paste a git patch, syzbot will apply it before testing. > > 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 test https://github.com/davidhildenbrand/linux.git filemap_test_locked -- Cheers, David / dhildenb