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AJvYcCVLXi0Ez2iJmxAKDqDrXoJkgOPEkYbJc71pBm+6sKVRBsX8yZsryOkilnFefbU1QeUhSa6nFQ69wg==@vger.kernel.org X-Gm-Message-State: AOJu0Yw6psYUN0l39mZRIJ4fl6h60wXU8qPxUJV3QFz47RjztgazO9w9 HCN0UmuYkX2zj66w6yneGITwC+oYsbDdjJQf2xhMU+qxT62xiQJllY/Ka7TWtj7bcK8Y6kXJxC7 PoHOXPR7R15KSZq/fE3nlM+xbLIXvfKF7neVPmtcpVypCcAcyZwUwi5XqkSA= X-Google-Smtp-Source: AGHT+IFQohCLUW9JVi6BCN8/njSlnTUl1RB9nqXey9XZZdZkOqOrsSglfemmEdZpzp1F1yCF8Ho8lPXmjcLO8SMiMpD1aLXZC5zs Precedence: bulk X-Mailing-List: io-uring@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:168e:b0:424:14a4:5064 with SMTP id e9e14a558f8ab-42e7ac437a1mr189297915ab.0.1759814609600; Mon, 06 Oct 2025 22:23:29 -0700 (PDT) Date: Mon, 06 Oct 2025 22:23:29 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <68e4a3d1.a00a0220.298cc0.0471.GAE@google.com> Subject: [syzbot] [nfs?] [io-uring?] WARNING in nfsd_file_cache_init From: syzbot To: Dai.Ngo@oracle.com, axboe@kernel.dk, chuck.lever@oracle.com, io-uring@vger.kernel.org, jlayton@kernel.org, linux-kernel@vger.kernel.org, linux-nfs@vger.kernel.org, neil@brown.name, okorniev@redhat.com, syzkaller-bugs@googlegroups.com, tom@talpey.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: d104e3d17f7b Merge tag 'cxl-for-6.18' of git://git.kernel... git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=116bb942580000 kernel config: https://syzkaller.appspot.com/x/.config?x=ccc18dddafa95b97 dashboard link: https://syzkaller.appspot.com/bug?extid=a6f4d69b9b23404bbabf compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1573b214580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12b515cd980000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/335d7c35cbbe/disk-d104e3d1.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/72dbd901415b/vmlinux-d104e3d1.xz kernel image: https://storage.googleapis.com/syzbot-assets/3ff1353d0870/bzImage-d104e3d1.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+a6f4d69b9b23404bbabf@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 1 PID: 6128 at kernel/locking/lockdep.c:6606 lockdep_unregister_key+0x2ca/0x310 kernel/locking/lockdep.c:6606 Modules linked in: CPU: 1 UID: 0 PID: 6128 Comm: syz.4.21 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 RIP: 0010:lockdep_unregister_key+0x2ca/0x310 kernel/locking/lockdep.c:6606 Code: 50 e4 0f 48 3b 44 24 10 0f 84 26 fe ff ff e8 bd cd 17 09 e8 e8 ce 17 09 41 f7 c7 00 02 00 00 74 bd fb 40 84 ed 75 bc eb cd 90 <0f> 0b 90 e9 19 ff ff ff 90 0f 0b 90 e9 2a ff ff ff 48 c7 c7 d0 ac RSP: 0018:ffffc90003e870d0 EFLAGS: 00010002 RAX: eb1525397f5bdf00 RBX: ffff88803c121148 RCX: 1ffff920007d0dfc RDX: 0000000000000000 RSI: ffffffff8acb1500 RDI: ffffffff8b1dd0e0 RBP: 00000000ffffffea R08: ffffffff8eb5aa37 R09: 1ffffffff1d6b546 R10: dffffc0000000000 R11: fffffbfff1d6b547 R12: 0000000000000000 R13: ffff88814d1b8900 R14: 0000000000000000 R15: 0000000000000203 FS: 00007f773f75e6c0(0000) GS:ffff88812712f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffdaea3af52 CR3: 000000003a5ca000 CR4: 00000000003526f0 Call Trace: __kmem_cache_release+0xe3/0x1e0 mm/slub.c:7696 do_kmem_cache_create+0x74e/0x790 mm/slub.c:8575 create_cache mm/slab_common.c:242 [inline] __kmem_cache_create_args+0x1ce/0x330 mm/slab_common.c:340 nfsd_file_cache_init+0x1d6/0x530 fs/nfsd/filecache.c:816 nfsd_startup_generic fs/nfsd/nfssvc.c:282 [inline] nfsd_startup_net fs/nfsd/nfssvc.c:377 [inline] nfsd_svc+0x393/0x900 fs/nfsd/nfssvc.c:786 nfsd_nl_threads_set_doit+0x84a/0x960 fs/nfsd/nfsctl.c:1639 genl_family_rcv_msg_doit+0x212/0x300 net/netlink/genetlink.c:1115 genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0x60e/0x790 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2552 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline] netlink_unicast+0x846/0xa10 net/netlink/af_netlink.c:1346 netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1896 sock_sendmsg_nosec net/socket.c:727 [inline] __sock_sendmsg+0x219/0x270 net/socket.c:742 ____sys_sendmsg+0x508/0x820 net/socket.c:2630 ___sys_sendmsg+0x21f/0x2a0 net/socket.c:2684 __sys_sendmsg net/socket.c:2716 [inline] __do_sys_sendmsg net/socket.c:2721 [inline] __se_sys_sendmsg net/socket.c:2719 [inline] __x64_sys_sendmsg+0x1a1/0x260 net/socket.c:2719 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f77400eeec9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f773f75e038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f7740345fa0 RCX: 00007f77400eeec9 RDX: 0000000000008004 RSI: 0000200000000180 RDI: 0000000000000006 RBP: 00007f7740171f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f7740346038 R14: 00007f7740345fa0 R15: 00007ffce616f8d8 --- 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