ntfs3(loop5): ino=19, mi_enum_attr ntfs3(loop5): Mark volume as dirty due to NTFS errors ntfs3(loop5): Failed to initialize $Extend/$Reparse. ntfs3(loop5): ino=1b, mi_enum_attr ====================================================== WARNING: possible circular locking dependency detected 6.16.0-syzkaller-02094-g86aa72182095 #0 Not tainted ------------------------------------------------------ syz.5.2667/18958 is trying to acquire lock: ffff88805483d278 (&ni->file.run_lock#2){++++}-{4:4}, at: run_unpack_ex+0x7e5/0xba0 fs/ntfs3/run.c:1119 but task is already holding lock: ffff888032228270 (&wnd->rw_lock){++++}-{4:4}, at: run_unpack_ex+0x701/0xba0 fs/ntfs3/run.c:1100 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&wnd->rw_lock){++++}-{4:4}: lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5871 down_write_nested+0x9d/0x200 kernel/locking/rwsem.c:1693 ntfs_look_for_free_space+0xd3/0x600 fs/ntfs3/fsntfs.c:362 attr_allocate_clusters+0x1c1/0x6d0 fs/ntfs3/attrib.c:159 attr_set_size+0x14a4/0x2c70 fs/ntfs3/attrib.c:574 ntfs_extend_mft+0x162/0x450 fs/ntfs3/fsntfs.c:512 ntfs_look_free_mft+0x5f8/0xd50 fs/ntfs3/fsntfs.c:709 ni_create_attr_list+0x8ff/0x13d0 fs/ntfs3/frecord.c:826 ni_ins_attr_ext+0x43e/0xb50 fs/ntfs3/frecord.c:924 ni_insert_attr fs/ntfs3/frecord.c:1091 [inline] ni_insert_resident fs/ntfs3/frecord.c:1475 [inline] ni_add_name+0x6df/0xc90 fs/ntfs3/frecord.c:2987 ni_rename+0x4a/0x100 fs/ntfs3/frecord.c:3026 ntfs_rename+0x735/0xbf0 fs/ntfs3/namei.c:332 vfs_rename+0xbda/0xf00 fs/namei.c:5129 do_renameat2+0x6ce/0xa80 fs/namei.c:5278 __do_sys_rename fs/namei.c:5325 [inline] __se_sys_rename fs/namei.c:5323 [inline] __x64_sys_rename+0x82/0x90 fs/namei.c:5323 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 -> #0 (&ni->file.run_lock#2){++++}-{4:4}: check_prev_add kernel/locking/lockdep.c:3168 [inline] check_prevs_add kernel/locking/lockdep.c:3287 [inline] validate_chain+0xb9b/0x2140 kernel/locking/lockdep.c:3911 __lock_acquire+0xab9/0xd20 kernel/locking/lockdep.c:5240 lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5871 down_read+0x46/0x2e0 kernel/locking/rwsem.c:1524 run_unpack_ex+0x7e5/0xba0 fs/ntfs3/run.c:1119 ntfs_read_mft fs/ntfs3/inode.c:401 [inline] ntfs_iget5+0x232b/0x37c0 fs/ntfs3/inode.c:540 dir_search_u+0x1df/0x2c0 fs/ntfs3/dir.c:264 ntfs_lookup+0xfb/0x1f0 fs/ntfs3/namei.c:85 lookup_one_qstr_excl+0x131/0x360 fs/namei.c:1697 do_unlinkat+0x1df/0x560 fs/namei.c:4638 __do_sys_unlink fs/namei.c:4696 [inline] __se_sys_unlink fs/namei.c:4694 [inline] __x64_sys_unlink+0x47/0x50 fs/namei.c:4694 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 other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&wnd->rw_lock); lock(&ni->file.run_lock#2); lock(&wnd->rw_lock); rlock(&ni->file.run_lock#2); *** DEADLOCK *** 4 locks held by syz.5.2667/18958: #0: ffff88802f2d0428 (sb_writers#15){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:557 #1: ffff88805483ea68 (&type->i_mutex_dir_key#10/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:914 [inline] #1: ffff88805483ea68 (&type->i_mutex_dir_key#10/1){+.+.}-{4:4}, at: do_unlinkat+0x1c7/0x560 fs/namei.c:4637 #2: ffff88805483e7d0 (&ni->ni_lock/6){+.+.}-{4:4}, at: ni_lock_dir fs/ntfs3/ntfs_fs.h:1118 [inline] #2: ffff88805483e7d0 (&ni->ni_lock/6){+.+.}-{4:4}, at: ntfs_lookup+0xee/0x1f0 fs/ntfs3/namei.c:84 #3: ffff888032228270 (&wnd->rw_lock){++++}-{4:4}, at: run_unpack_ex+0x701/0xba0 fs/ntfs3/run.c:1100 stack backtrace: CPU: 1 UID: 0 PID: 18958 Comm: syz.5.2667 Not tainted 6.16.0-syzkaller-02094-g86aa72182095 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 print_circular_bug+0x2ee/0x310 kernel/locking/lockdep.c:2046 check_noncircular+0x134/0x160 kernel/locking/lockdep.c:2178 check_prev_add kernel/locking/lockdep.c:3168 [inline] check_prevs_add kernel/locking/lockdep.c:3287 [inline] validate_chain+0xb9b/0x2140 kernel/locking/lockdep.c:3911 __lock_acquire+0xab9/0xd20 kernel/locking/lockdep.c:5240 lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5871 down_read+0x46/0x2e0 kernel/locking/rwsem.c:1524 run_unpack_ex+0x7e5/0xba0 fs/ntfs3/run.c:1119 ntfs_read_mft fs/ntfs3/inode.c:401 [inline] ntfs_iget5+0x232b/0x37c0 fs/ntfs3/inode.c:540 dir_search_u+0x1df/0x2c0 fs/ntfs3/dir.c:264 ntfs_lookup+0xfb/0x1f0 fs/ntfs3/namei.c:85 lookup_one_qstr_excl+0x131/0x360 fs/namei.c:1697 do_unlinkat+0x1df/0x560 fs/namei.c:4638 __do_sys_unlink fs/namei.c:4696 [inline] __se_sys_unlink fs/namei.c:4694 [inline] __x64_sys_unlink+0x47/0x50 fs/namei.c:4694 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: 0033:0x7fd13138e9a9 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:00007fd1321eb038 EFLAGS: 00000246 ORIG_RAX: 0000000000000057 RAX: ffffffffffffffda RBX: 00007fd1315b5fa0 RCX: 00007fd13138e9a9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000000 RBP: 00007fd131410d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fd1315b5fa0 R15: 00007ffe767ff7f8