ntfs3: loop3: Different NTFS sector size (1024) and media sector size (512). ntfs3: loop3: Mark volume as dirty due to NTFS errors ntfs3: loop3: Failed to load $Extend (-22). ntfs3: loop3: Failed to initialize $Extend. ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz.3.9237/25833 is trying to acquire lock: ffff88802943a270 (&wnd->rw_lock){++++}-{3:3}, at: ntfs_look_for_free_space+0xdf/0x630 fs/ntfs3/fsntfs.c:362 but task is already holding lock: ffff88805bfba690 (&ni->file.run_lock#2){++++}-{3:3}, at: ntfs_extend_mft+0x145/0x470 fs/ntfs3/fsntfs.c:511 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&ni->file.run_lock#2){++++}-{3:3}: down_read+0x46/0x2e0 kernel/locking/rwsem.c:1520 run_unpack_ex+0x858/0xc40 fs/ntfs3/run.c:1138 ntfs_read_mft fs/ntfs3/inode.c:401 [inline] ntfs_iget5+0x2080/0x37f0 fs/ntfs3/inode.c:535 dir_search_u+0x1fe/0x2e0 fs/ntfs3/dir.c:264 ntfs_lookup+0x100/0x1d0 fs/ntfs3/namei.c:85 lookup_one_qstr_excl+0x112/0x250 fs/namei.c:1617 do_unlinkat+0x19d/0x590 fs/namei.c:4385 __do_sys_unlink fs/namei.c:4447 [inline] __se_sys_unlink fs/namei.c:4445 [inline] __x64_sys_unlink+0x49/0x50 fs/namei.c:4445 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #0 (&wnd->rw_lock){++++}-{3:3}: check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain kernel/locking/lockdep.c:3869 [inline] __lock_acquire+0x37ef/0x7d80 kernel/locking/lockdep.c:5137 lock_acquire+0x19e/0x420 kernel/locking/lockdep.c:5754 down_write_nested+0x9e/0x200 kernel/locking/rwsem.c:1689 ntfs_look_for_free_space+0xdf/0x630 fs/ntfs3/fsntfs.c:362 attr_allocate_clusters+0x1be/0x6b0 fs/ntfs3/attrib.c:159 attr_set_size+0x1406/0x2ad0 fs/ntfs3/attrib.c:577 ntfs_extend_mft+0x16a/0x470 fs/ntfs3/fsntfs.c:512 ntfs_look_free_mft+0x667/0xd90 fs/ntfs3/fsntfs.c:709 ni_create_attr_list+0x92b/0x13b0 fs/ntfs3/frecord.c:880 ni_ins_attr_ext+0x2e9/0xa20 fs/ntfs3/frecord.c:978 ni_insert_attr fs/ntfs3/frecord.c:1145 [inline] ni_insert_resident fs/ntfs3/frecord.c:1529 [inline] ni_add_name+0x6e0/0xc90 fs/ntfs3/frecord.c:3067 ntfs_link_inode+0x134/0x150 fs/ntfs3/inode.c:1771 ntfs_link+0x118/0x2a0 fs/ntfs3/namei.c:156 vfs_link+0x4c7/0x660 fs/namei.c:4605 do_linkat+0x295/0x5a0 fs/namei.c:4676 __do_sys_link fs/namei.c:4710 [inline] __se_sys_link fs/namei.c:4708 [inline] __x64_sys_link+0x86/0x90 fs/namei.c:4708 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ni->file.run_lock#2); lock(&wnd->rw_lock); lock(&ni->file.run_lock#2); lock(&wnd->rw_lock); *** DEADLOCK *** 7 locks held by syz.3.9237/25833: #0: ffff88802943c418 (sb_writers#16){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:412 #1: ffff88805bfbe390 (&type->i_mutex_dir_key#10/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:839 [inline] #1: ffff88805bfbe390 (&type->i_mutex_dir_key#10/1){+.+.}-{3:3}, at: filename_create+0x20f/0x450 fs/namei.c:3890 #2: ffff88805bfbb750 (&sb->s_type->i_mutex_key#24){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] #2: ffff88805bfbb750 (&sb->s_type->i_mutex_key#24){+.+.}-{3:3}, at: vfs_link+0x394/0x660 fs/namei.c:4596 #3: ffff88805bfbe0e0 (&ni->ni_lock#2/6){+.+.}-{3:3}, at: ni_lock_dir fs/ntfs3/ntfs_fs.h:1125 [inline] #3: ffff88805bfbe0e0 (&ni->ni_lock#2/6){+.+.}-{3:3}, at: ntfs_link+0xdb/0x2a0 fs/ntfs3/namei.c:149 #4: ffff88805bfbb4a0 (&ni->ni_lock#2/5){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1120 [inline] #4: ffff88805bfbb4a0 (&ni->ni_lock#2/5){+.+.}-{3:3}, at: ntfs_link+0xf6/0x2a0 fs/ntfs3/namei.c:151 #5: ffff88802943a128 (&wnd->rw_lock/1){+.+.}-{3:3}, at: ntfs_look_free_mft+0x171/0xd90 fs/ntfs3/fsntfs.c:571 #6: ffff88805bfba690 (&ni->file.run_lock#2){++++}-{3:3}, at: ntfs_extend_mft+0x145/0x470 fs/ntfs3/fsntfs.c:511 stack backtrace: CPU: 0 PID: 25833 Comm: syz.3.9237 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 Call Trace: dump_stack_lvl+0x18c/0x250 lib/dump_stack.c:106 check_noncircular+0x2fc/0x400 kernel/locking/lockdep.c:2187 check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain kernel/locking/lockdep.c:3869 [inline] __lock_acquire+0x37ef/0x7d80 kernel/locking/lockdep.c:5137 lock_acquire+0x19e/0x420 kernel/locking/lockdep.c:5754 down_write_nested+0x9e/0x200 kernel/locking/rwsem.c:1689 ntfs_look_for_free_space+0xdf/0x630 fs/ntfs3/fsntfs.c:362 attr_allocate_clusters+0x1be/0x6b0 fs/ntfs3/attrib.c:159 attr_set_size+0x1406/0x2ad0 fs/ntfs3/attrib.c:577 ntfs_extend_mft+0x16a/0x470 fs/ntfs3/fsntfs.c:512 ntfs_look_free_mft+0x667/0xd90 fs/ntfs3/fsntfs.c:709 ni_create_attr_list+0x92b/0x13b0 fs/ntfs3/frecord.c:880 ni_ins_attr_ext+0x2e9/0xa20 fs/ntfs3/frecord.c:978 ni_insert_attr fs/ntfs3/frecord.c:1145 [inline] ni_insert_resident fs/ntfs3/frecord.c:1529 [inline] ni_add_name+0x6e0/0xc90 fs/ntfs3/frecord.c:3067 ntfs_link_inode+0x134/0x150 fs/ntfs3/inode.c:1771 ntfs_link+0x118/0x2a0 fs/ntfs3/namei.c:156 vfs_link+0x4c7/0x660 fs/namei.c:4605 do_linkat+0x295/0x5a0 fs/namei.c:4676 __do_sys_link fs/namei.c:4710 [inline] __se_sys_link fs/namei.c:4708 [inline] __x64_sys_link+0x86/0x90 fs/namei.c:4708 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f0abe19de59 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f0abf149028 EFLAGS: 00000246 ORIG_RAX: 0000000000000056 RAX: ffffffffffffffda RBX: 00007f0abe425fa0 RCX: 00007f0abe19de59 RDX: 0000000000000000 RSI: 0000200000000840 RDI: 0000200000000940 RBP: 00007f0abe233e6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f0abe426038 R14: 00007f0abe425fa0 R15: 00007ffc6d69d948 ntfs3: loop3: ino=0, attr_set_size