loop6: detected capacity change from 0 to 4096 ntfs3(loop6): Different NTFS sector size (1024) and media sector size (512). ====================================================== WARNING: possible circular locking dependency detected 6.16.0-rc3-syzkaller-00044-g7595b66ae9de #0 Not tainted ------------------------------------------------------ syz.6.199/7508 is trying to acquire lock: ffff8880317b4270 (&wnd->rw_lock){++++}-{4:4}, at: ntfs_look_for_free_space+0xd3/0x600 fs/ntfs3/fsntfs.c:362 but task is already holding lock: ffff88805525d9d0 (&ni->file.run_lock#2){++++}-{4:4}, at: ntfs_extend_mft+0x13d/0x450 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){++++}-{4:4}: 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_open fs/namei.c:3695 [inline] open_last_lookups fs/namei.c:3816 [inline] path_openat+0x1101/0x3830 fs/namei.c:4052 do_filp_open+0x1fa/0x410 fs/namei.c:4082 do_sys_openat2+0x121/0x1c0 fs/open.c:1437 do_sys_open fs/open.c:1452 [inline] __do_sys_openat fs/open.c:1468 [inline] __se_sys_openat fs/open.c:1463 [inline] __x64_sys_openat+0x138/0x170 fs/open.c:1463 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 (&wnd->rw_lock){++++}-{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_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+0x4e/0x140 fs/ntfs3/frecord.c:3027 ntfs_rename+0x7bb/0xc60 fs/ntfs3/namei.c:317 vfs_rename+0xb99/0xec0 fs/namei.c:5137 do_renameat2+0x878/0xc50 fs/namei.c:5286 __do_sys_rename fs/namei.c:5333 [inline] __se_sys_rename fs/namei.c:5331 [inline] __x64_sys_rename+0x82/0x90 fs/namei.c:5331 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(&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.6.199/7508: #0: ffff88802d976428 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:557 #1: ffff88805525c5b0 (&type->i_mutex_dir_key#8/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:914 [inline] #1: ffff88805525c5b0 (&type->i_mutex_dir_key#8/1){+.+.}-{4:4}, at: lock_rename fs/namei.c:3281 [inline] #1: ffff88805525c5b0 (&type->i_mutex_dir_key#8/1){+.+.}-{4:4}, at: do_renameat2+0x3dd/0xc50 fs/namei.c:5232 #2: ffff88805525e310 (&sb->s_type->i_mutex_key#20/4){+.+.}-{4:4}, at: vfs_rename+0x69a/0xec0 fs/namei.c:5108 #3: ffff88805525c318 (&ni->ni_lock#2/6){+.+.}-{4:4}, at: ni_lock_dir fs/ntfs3/ntfs_fs.h:1105 [inline] #3: ffff88805525c318 (&ni->ni_lock#2/6){+.+.}-{4:4}, at: ntfs_rename+0x74d/0xc60 fs/ntfs3/namei.c:311 #4: ffff88805525e078 (&ni->ni_lock/5){+.+.}-{4:4}, at: ni_lock fs/ntfs3/ntfs_fs.h:1100 [inline] #4: ffff88805525e078 (&ni->ni_lock/5){+.+.}-{4:4}, at: ntfs_rename+0x766/0xc60 fs/ntfs3/namei.c:312 #5: ffff8880317b4128 (&wnd->rw_lock/1){+.+.}-{4:4}, at: ntfs_look_free_mft+0x163/0xd50 fs/ntfs3/fsntfs.c:571 #6: ffff88805525d9d0 (&ni->file.run_lock#2){++++}-{4:4}, at: ntfs_extend_mft+0x13d/0x450 fs/ntfs3/fsntfs.c:511 stack backtrace: CPU: 0 UID: 0 PID: 7508 Comm: syz.6.199 Not tainted 6.16.0-rc3-syzkaller-00044-g7595b66ae9de #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 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_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+0x4e/0x140 fs/ntfs3/frecord.c:3027 ntfs_rename+0x7bb/0xc60 fs/ntfs3/namei.c:317 vfs_rename+0xb99/0xec0 fs/namei.c:5137 do_renameat2+0x878/0xc50 fs/namei.c:5286 __do_sys_rename fs/namei.c:5333 [inline] __se_sys_rename fs/namei.c:5331 [inline] __x64_sys_rename+0x82/0x90 fs/namei.c:5331 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: 0033:0x7f46a258e929 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:00007f46a3425038 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 RAX: ffffffffffffffda RBX: 00007f46a27b5fa0 RCX: 00007f46a258e929 RDX: 0000000000000000 RSI: 0000200000000400 RDI: 0000200000006200 RBP: 00007f46a2610b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f46a27b5fa0 R15: 00007ffdc342ba08 ntfs3(loop6): ino=0, attr_set_size ntfs3(loop6): Mark volume as dirty due to NTFS errors