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From: syzbot To: gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, linux-next@vger.kernel.org, sfr@canb.auug.org.au, syzkaller-bugs@googlegroups.com, tj@kernel.org Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 76db4c64526c Add linux-next specific files for 20240617 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=15e7ed0e980000 kernel config: https://syzkaller.appspot.com/x/.config?x=40a62461e8f6102 dashboard link: https://syzkaller.appspot.com/bug?extid=b2c37bfe1276a38db24f 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/c821f6b56371/disk-76db4c64.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/efb2d2cbe799/vmlinux-76db4c64.xz kernel image: https://storage.googleapis.com/syzbot-assets/7be14777af71/bzImage-76db4c64.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+b2c37bfe1276a38db24f@syzkaller.appspotmail.com cgroup: Unknown subsys name 'net' BUG: key ffff88801b2e00d8 has not been registered! ------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(1) WARNING: CPU: 0 PID: 5091 at kernel/locking/lockdep.c:4945 lockdep_init_map_type+0x4e3/0x910 kernel/locking/lockdep.c:4945 Modules linked in: CPU: 0 PID: 5091 Comm: syz-executor Not tainted 6.10.0-rc4-next-20240617-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 RIP: 0010:lockdep_init_map_type+0x4e3/0x910 kernel/locking/lockdep.c:4945 Code: 00 00 83 3d 0e ee 3f 0e 00 75 23 90 48 c7 c7 c0 bf ca 8b 48 c7 c6 60 c2 ca 8b e8 98 12 e6 ff 48 ba 00 00 00 00 00 fc ff df 90 <0f> 0b 90 90 90 e9 0d ff ff ff 48 c7 c7 00 c2 ca 8b 4c 89 fe e8 d4 RSP: 0018:ffffc9000392f560 EFLAGS: 00010246 RAX: fd5a9d02d6690300 RBX: ffff88802b44f2fa RCX: ffff888027300000 RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc9000392f630 R08: ffffffff81552402 R09: fffffbfff1c39afc R10: dffffc0000000000 R11: fffffbfff1c39afc R12: ffff88802b44f2d8 R13: 1ffff92000725eb0 R14: 0000000000000000 R15: ffff88801b2e00d8 FS: 000055557db2c480(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055f3fa310918 CR3: 000000001f034000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lockdep_init_map_waits include/linux/lockdep.h:135 [inline] lockdep_init_map_wait include/linux/lockdep.h:142 [inline] lockdep_init_map include/linux/lockdep.h:148 [inline] __kernfs_create_file+0x112/0x2e0 fs/kernfs/file.c:1046 cgroup_add_file kernel/cgroup/cgroup.c:4216 [inline] cgroup_addrm_files+0xab8/0xe50 kernel/cgroup/cgroup.c:4270 css_populate_dir+0x120/0x3b0 kernel/cgroup/cgroup.c:1761 cgroup_apply_control_enable+0x621/0xaf0 kernel/cgroup/cgroup.c:3240 cgroup_apply_control+0x97/0x800 kernel/cgroup/cgroup.c:3314 rebind_subsystems+0x10a0/0x1500 kernel/cgroup/cgroup.c:1882 cgroup_setup_root+0x3d3/0xb30 kernel/cgroup/cgroup.c:2132 cgroup1_root_to_use kernel/cgroup/cgroup-v1.c:1224 [inline] cgroup1_get_tree+0x582/0x8c0 kernel/cgroup/cgroup-v1.c:1244 vfs_get_tree+0x90/0x2a0 fs/super.c:1789 do_new_mount+0x2be/0xb40 fs/namespace.c:3379 do_mount fs/namespace.c:3719 [inline] __do_sys_mount fs/namespace.c:3925 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3902 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f7e4547e62a Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 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:00007ffcd9331ab8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007ffcd9331c70 RCX: 00007f7e4547e62a RDX: 00007f7e454e51a6 RSI: 00007f7e454daa7e RDI: 00007f7e454d99b9 RBP: 00007f7e454daa7e R08: 00007f7e454dac2a R09: 006f6972705f7465 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7e454d99b9 R13: 00007f7e454e51a6 R14: 00007ffcd9331c88 R15: 00007ffcd9331ac0 --- 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