loop2: detected capacity change from 0 to 4096 ntfs3: loop2: Different NTFS sector size (4096) and media sector size (512). ntfs3: loop2: Failed to initialize $Extend/$Reparse. ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz.2.1104/9421 is trying to acquire lock: ffff88805ac31f30 (&ni->file.run_lock#2){++++}-{3:3}, at: run_unpack_ex+0x7e6/0xba0 fs/ntfs3/run.c:1117 but task is already holding lock: ffff888028ba0270 (&wnd->rw_lock){++++}-{3:3}, at: run_unpack_ex+0x702/0xba0 fs/ntfs3/run.c:1098 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&wnd->rw_lock){++++}-{3:3}: down_write_nested+0x9e/0x1f0 kernel/locking/rwsem.c:1689 ntfs_look_for_free_space+0xd4/0x600 fs/ntfs3/fsntfs.c:362 attr_allocate_clusters+0x1c2/0x6d0 fs/ntfs3/attrib.c:159 attr_set_size+0x14a0/0x2c60 fs/ntfs3/attrib.c:575 ntfs_set_size+0x164/0x200 fs/ntfs3/inode.c:849 ntfs_extend+0x157/0x4d0 fs/ntfs3/file.c:335 ntfs3_setattr+0x2ad/0xb60 fs/ntfs3/file.c:708 notify_change+0xb0d/0xe10 fs/attr.c:499 do_truncate+0x19b/0x220 fs/open.c:66 vfs_truncate+0x266/0x300 fs/open.c:112 do_sys_truncate+0xe0/0x1a0 fs/open.c:135 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #0 (&ni->file.run_lock#2){++++}-{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+0x2ddb/0x7c80 kernel/locking/lockdep.c:5137 lock_acquire+0x197/0x410 kernel/locking/lockdep.c:5754 down_read+0x46/0x2e0 kernel/locking/rwsem.c:1520 run_unpack_ex+0x7e6/0xba0 fs/ntfs3/run.c:1117 ntfs_read_mft fs/ntfs3/inode.c:401 [inline] ntfs_iget5+0x22e3/0x3750 fs/ntfs3/inode.c:533 dir_search_u+0x1e0/0x2b0 fs/ntfs3/dir.c:264 ntfs_atomic_open+0x23b/0x520 fs/ntfs3/namei.c:408 atomic_open fs/namei.c:3351 [inline] lookup_open fs/namei.c:3459 [inline] open_last_lookups fs/namei.c:3556 [inline] path_openat+0xf27/0x3190 fs/namei.c:3786 do_filp_open+0x1c5/0x3d0 fs/namei.c:3816 do_sys_openat2+0x12c/0x1c0 fs/open.c:1419 do_sys_open fs/open.c:1434 [inline] __do_sys_open fs/open.c:1442 [inline] __se_sys_open fs/open.c:1438 [inline] __x64_sys_open+0x11f/0x140 fs/open.c:1438 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 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.2.1104/9421: #0: ffff888028ba2418 (sb_writers#22){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:403 #1: ffff88805ac33750 (&type->i_mutex_dir_key#17){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:814 [inline] #1: ffff88805ac33750 (&type->i_mutex_dir_key#17){++++}-{3:3}, at: open_last_lookups fs/namei.c:3555 [inline] #1: ffff88805ac33750 (&type->i_mutex_dir_key#17){++++}-{3:3}, at: path_openat+0x7b7/0x3190 fs/namei.c:3786 #2: ffff88805ac334a0 (&ni->ni_lock#2/6){+.+.}-{3:3}, at: ni_lock_dir fs/ntfs3/ntfs_fs.h:1124 [inline] #2: ffff88805ac334a0 (&ni->ni_lock#2/6){+.+.}-{3:3}, at: ntfs_atomic_open+0x1ec/0x520 fs/ntfs3/namei.c:400 #3: ffff888028ba0270 (&wnd->rw_lock){++++}-{3:3}, at: run_unpack_ex+0x702/0xba0 fs/ntfs3/run.c:1098 stack backtrace: CPU: 1 PID: 9421 Comm: syz.2.1104 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 Call Trace: dump_stack_lvl+0x16c/0x230 lib/dump_stack.c:106 check_noncircular+0x2bd/0x3c0 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+0x2ddb/0x7c80 kernel/locking/lockdep.c:5137 lock_acquire+0x197/0x410 kernel/locking/lockdep.c:5754 down_read+0x46/0x2e0 kernel/locking/rwsem.c:1520 run_unpack_ex+0x7e6/0xba0 fs/ntfs3/run.c:1117 ntfs_read_mft fs/ntfs3/inode.c:401 [inline] ntfs_iget5+0x22e3/0x3750 fs/ntfs3/inode.c:533 dir_search_u+0x1e0/0x2b0 fs/ntfs3/dir.c:264 ntfs_atomic_open+0x23b/0x520 fs/ntfs3/namei.c:408 atomic_open fs/namei.c:3351 [inline] lookup_open fs/namei.c:3459 [inline] open_last_lookups fs/namei.c:3556 [inline] path_openat+0xf27/0x3190 fs/namei.c:3786 do_filp_open+0x1c5/0x3d0 fs/namei.c:3816 do_sys_openat2+0x12c/0x1c0 fs/open.c:1419 do_sys_open fs/open.c:1434 [inline] __do_sys_open fs/open.c:1442 [inline] __se_sys_open fs/open.c:1438 [inline] __x64_sys_open+0x11f/0x140 fs/open.c:1438 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f12d4d8ebe9 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:00007f12d5b13038 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007f12d4fb5fa0 RCX: 00007f12d4d8ebe9 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00002000000001c0 RBP: 00007f12d4e11e19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f12d4fb6038 R14: 00007f12d4fb5fa0 R15: 00007ffdcdefe648