ntfs3(loop5): Mark volume as dirty due to NTFS errors ntfs3(loop5): Failed to initialize $Extend/$Reparse. ====================================================== WARNING: possible circular locking dependency detected 6.17.0-rc1-syzkaller-00004-g53e760d89498 #0 Tainted: G W ------------------------------------------------------ syz.5.838/12427 is trying to acquire lock: ffff888038d2e250 (&wnd->rw_lock){++++}-{4:4}, at: mark_as_free_ex+0x3e/0x390 fs/ntfs3/fsntfs.c:2464 but task is already holding lock: ffff88803de937d0 (&ni->file.run_lock#2){++++}-{4:4}, at: ntfs_truncate fs/ntfs3/file.c:455 [inline] ffff88803de937d0 (&ni->file.run_lock#2){++++}-{4:4}, at: ntfs_setattr+0x70e/0xbe0 fs/ntfs3/file.c:778 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:5868 down_read+0x97/0x1f0 kernel/locking/rwsem.c:1537 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 ntfs_dir_emit fs/ntfs3/dir.c:337 [inline] ntfs_read_hdr+0x7cf/0xc30 fs/ntfs3/dir.c:385 ntfs_readdir+0xa5f/0xdd0 fs/ntfs3/dir.c:496 iterate_dir+0x3a2/0x580 fs/readdir.c:108 __do_sys_getdents fs/readdir.c:326 [inline] __se_sys_getdents+0xe4/0x250 fs/readdir.c:312 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:3165 [inline] check_prevs_add kernel/locking/lockdep.c:3284 [inline] validate_chain+0xb9b/0x2140 kernel/locking/lockdep.c:3908 __lock_acquire+0xab9/0xd20 kernel/locking/lockdep.c:5237 lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868 down_write_nested+0x3e/0x60 kernel/locking/rwsem.c:1706 mark_as_free_ex+0x3e/0x390 fs/ntfs3/fsntfs.c:2464 run_deallocate_ex+0x187/0x2f0 fs/ntfs3/attrib.c:122 attr_set_size+0xeb9/0x2c70 fs/ntfs3/attrib.c:753 ntfs_truncate fs/ntfs3/file.c:456 [inline] ntfs_setattr+0x7d0/0xbe0 fs/ntfs3/file.c:778 notify_change+0xb31/0xe60 fs/attr.c:552 do_truncate+0x1a4/0x220 fs/open.c:68 handle_truncate fs/namei.c:3508 [inline] do_open fs/namei.c:3891 [inline] path_openat+0x3078/0x3840 fs/namei.c:4046 do_filp_open+0x1fa/0x410 fs/namei.c:4073 do_sys_openat2+0x121/0x1c0 fs/open.c:1435 do_sys_open fs/open.c:1450 [inline] __do_sys_creat fs/open.c:1528 [inline] __se_sys_creat fs/open.c:1522 [inline] __x64_sys_creat+0x8f/0xc0 fs/open.c:1522 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 *** 4 locks held by syz.5.838/12427: #0: ffff888038d2c488 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:557 #1: ffff88803de939e8 (&sb->s_type->i_mutex_key#21){+.+.}-{4:4}, at: inode_lock_killable include/linux/fs.h:874 [inline] #1: ffff88803de939e8 (&sb->s_type->i_mutex_key#21){+.+.}-{4:4}, at: do_truncate+0x171/0x220 fs/open.c:63 #2: ffff88803de93730 (&ni->ni_lock#2/5){+.+.}-{4:4}, at: ni_lock fs/ntfs3/ntfs_fs.h:1113 [inline] #2: ffff88803de93730 (&ni->ni_lock#2/5){+.+.}-{4:4}, at: ntfs_truncate fs/ntfs3/file.c:453 [inline] #2: ffff88803de93730 (&ni->ni_lock#2/5){+.+.}-{4:4}, at: ntfs_setattr+0x6fd/0xbe0 fs/ntfs3/file.c:778 #3: ffff88803de937d0 (&ni->file.run_lock#2){++++}-{4:4}, at: ntfs_truncate fs/ntfs3/file.c:455 [inline] #3: ffff88803de937d0 (&ni->file.run_lock#2){++++}-{4:4}, at: ntfs_setattr+0x70e/0xbe0 fs/ntfs3/file.c:778 stack backtrace: CPU: 1 UID: 0 PID: 12427 Comm: syz.5.838 Tainted: G W 6.17.0-rc1-syzkaller-00004-g53e760d89498 #0 PREEMPT_{RT,(full)} Tainted: [W]=WARN 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:2043 check_noncircular+0x134/0x160 kernel/locking/lockdep.c:2175 check_prev_add kernel/locking/lockdep.c:3165 [inline] check_prevs_add kernel/locking/lockdep.c:3284 [inline] validate_chain+0xb9b/0x2140 kernel/locking/lockdep.c:3908 __lock_acquire+0xab9/0xd20 kernel/locking/lockdep.c:5237 lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868 down_write_nested+0x3e/0x60 kernel/locking/rwsem.c:1706 mark_as_free_ex+0x3e/0x390 fs/ntfs3/fsntfs.c:2464 run_deallocate_ex+0x187/0x2f0 fs/ntfs3/attrib.c:122 attr_set_size+0xeb9/0x2c70 fs/ntfs3/attrib.c:753 ntfs_truncate fs/ntfs3/file.c:456 [inline] ntfs_setattr+0x7d0/0xbe0 fs/ntfs3/file.c:778 notify_change+0xb31/0xe60 fs/attr.c:552 do_truncate+0x1a4/0x220 fs/open.c:68 handle_truncate fs/namei.c:3508 [inline] do_open fs/namei.c:3891 [inline] path_openat+0x3078/0x3840 fs/namei.c:4046 do_filp_open+0x1fa/0x410 fs/namei.c:4073 do_sys_openat2+0x121/0x1c0 fs/open.c:1435 do_sys_open fs/open.c:1450 [inline] __do_sys_creat fs/open.c:1528 [inline] __se_sys_creat fs/open.c:1522 [inline] __x64_sys_creat+0x8f/0xc0 fs/open.c:1522 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: 0033:0x7fce939debe9 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:00007fce91c3e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007fce93c05fa0 RCX: 00007fce939debe9 RDX: 0000000000000000 RSI: c9028ba210c11f00 RDI: 00002000000000c0 RBP: 00007fce93a61e19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fce93c06038 R14: 00007fce93c05fa0 R15: 00007ffc58c2d628