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Sun, 08 Sep 2024 15:22:18 -0700 (PDT) Date: Sun, 08 Sep 2024 15:22:18 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000c6b91e0621a312f4@google.com> Subject: [syzbot] [mm?] BUG: corrupted list in add_to_unbuddied From: syzbot To: akpm@linux-foundation.org, linmiaohe@huawei.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, syzkaller-bugs@googlegroups.com, vitaly.wool@konsulko.com Content-Type: text/plain; charset="UTF-8" X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: C2ED6120007 X-Stat-Signature: xm91bewpzhisggqho5gm1qfez1n4zxum X-Rspam-User: X-HE-Tag: 1725834139-363485 X-HE-Meta: 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 RhWHo/q7 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 Hjj80XWs Z9YWNvvGUMNcWjCbhlpVaNCzekvV4BjXzMJm31pclakOCca2Pxa9wboZnhUBTQfMciCQdwsQXpCkxxAyfeMDCGt/u47876csiBz3O3y52+FHQZpytD+gKBbtYbOJE5wEASQ8w5W8YuJmIspH7G+uwFeN0dY9CC5Kwk7QjzQDVetB/KxE3wKcC2UVtjqg4vwSv7heUHzu6p7kpQWB6e0WcAT4X7Ysj66tib2PX61fyMxcL3z0HMXzB13ovMzSKuk821IfiaZ1wmm9QyHa9M/6Qv3mW3xmrV/HW0gQsVCxD7/jM+rpWiw7m/9SWHyQtDrCaP3ZZCf1gzCCRBuRftjIowfPRn22IpSeDGjLJNNbXMrvkr51HEip5c4DLSZOwG4Iw8XxahZU+Ft1/dsyk8Zdpers7lTvHTtM 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: Hello, syzbot found the following issue on: HEAD commit: 89f5e14d05b4 Merge tag 'timers_urgent_for_v6.11_rc7' of gi.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=164ed89f980000 kernel config: https://syzkaller.appspot.com/x/.config?x=58a85aa6925a8b78 dashboard link: https://syzkaller.appspot.com/bug?extid=30eac43568e2b3d65728 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7bc7510fe41f/non_bootable_disk-89f5e14d.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/dfc310daee41/vmlinux-89f5e14d.xz kernel image: https://storage.googleapis.com/syzbot-assets/a92f22c06568/bzImage-89f5e14d.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+30eac43568e2b3d65728@syzkaller.appspotmail.com list_add corruption. next->prev should be prev (ffffe8ffffc31c60), but was ffff888034ff6800. (next=ffff88801abf5000). ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:31! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 UID: 0 PID: 2862 Comm: kworker/u4:12 Not tainted 6.11.0-rc6-syzkaller-00363-g89f5e14d05b4 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Workqueue: zswap1 compact_page_work RIP: 0010:__list_add_valid_or_report+0xd6/0xf0 lib/list_debug.c:29 Code: e8 2f 73 fc 06 90 0f 0b 48 c7 c7 20 90 60 8c e8 20 73 fc 06 90 0f 0b 48 c7 c7 80 90 60 8c 4c 89 e6 4c 89 f1 e8 0b 73 fc 06 90 <0f> 0b 48 c7 c7 00 91 60 8c 4c 89 f6 4c 89 e1 e8 f6 72 fc 06 90 0f RSP: 0018:ffffc9000c3cfad0 EFLAGS: 00010246 RAX: 0000000000000075 RBX: ffff88801abf5008 RCX: 332bd7343f331c00 RDX: 0000000000000000 RSI: 0000000080000002 RDI: 0000000000000000 RBP: ffffe8ffffc31c60 R08: ffffffff817401bc R09: 1ffff92001879ef8 R10: dffffc0000000000 R11: fffff52001879ef9 R12: ffffe8ffffc31c60 R13: dffffc0000000000 R14: ffff88801abf5000 R15: ffff88801214c000 FS: 0000000000000000(0000) GS:ffff88801fe00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000560d7f0a4dd8 CR3: 000000004108a000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_add_valid include/linux/list.h:88 [inline] __list_add include/linux/list.h:150 [inline] list_add include/linux/list.h:169 [inline] add_to_unbuddied+0x2e4/0x4d0 mm/z3fold.c:550 do_compact_page+0x924/0xc50 mm/z3fold.c:772 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312 worker_thread+0x86d/0xd10 kernel/workqueue.c:3389 kthread+0x2f0/0x390 kernel/kthread.c:389 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:__list_add_valid_or_report+0xd6/0xf0 lib/list_debug.c:29 Code: e8 2f 73 fc 06 90 0f 0b 48 c7 c7 20 90 60 8c e8 20 73 fc 06 90 0f 0b 48 c7 c7 80 90 60 8c 4c 89 e6 4c 89 f1 e8 0b 73 fc 06 90 <0f> 0b 48 c7 c7 00 91 60 8c 4c 89 f6 4c 89 e1 e8 f6 72 fc 06 90 0f RSP: 0018:ffffc9000c3cfad0 EFLAGS: 00010246 RAX: 0000000000000075 RBX: ffff88801abf5008 RCX: 332bd7343f331c00 RDX: 0000000000000000 RSI: 0000000080000002 RDI: 0000000000000000 RBP: ffffe8ffffc31c60 R08: ffffffff817401bc R09: 1ffff92001879ef8 R10: dffffc0000000000 R11: fffff52001879ef9 R12: ffffe8ffffc31c60 R13: dffffc0000000000 R14: ffff88801abf5000 R15: ffff88801214c000 FS: 0000000000000000(0000) GS:ffff88801fe00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000560d7f0a4dd8 CR3: 000000004108a000 CR4: 0000000000350ef0 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