ntfs3(loop2): Different NTFS sector size (4096) and media sector size (512). ntfs3(loop2): ino=19, mi_enum_attr ntfs3(loop2): Mark volume as dirty due to NTFS errors ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz.2.6836/21812 is trying to acquire lock: ffff888033ca8270 (&wnd->rw_lock){++++}-{4:4}, at: ntfs_look_for_free_space+0xcc/0x720 fs/ntfs3/fsntfs.c:362 but task is already holding lock: ffff8880574acb20 (&ni->file.run_lock#2){++++}-{4:4}, at: ntfs_set_size+0x119/0x220 fs/ntfs3/inode.c:859 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&ni->file.run_lock#2){++++}-{4:4}: down_read+0x9b/0x480 kernel/locking/rwsem.c:1537 run_unpack_ex+0x671/0x740 fs/ntfs3/run.c:1119 ntfs_read_mft fs/ntfs3/inode.c:401 [inline] ntfs_iget5+0xd97/0x3ab0 fs/ntfs3/inode.c:540 dir_search_u+0x163/0x3a0 fs/ntfs3/dir.c:264 ntfs_lookup+0x1c5/0x2a0 fs/ntfs3/namei.c:85 lookup_open.isra.0+0x4da/0x1580 fs/namei.c:3686 open_last_lookups fs/namei.c:3807 [inline] path_openat+0x893/0x2cb0 fs/namei.c:4043 do_filp_open+0x20b/0x470 fs/namei.c:4073 do_sys_openat2+0x11b/0x1d0 fs/open.c:1435 do_sys_open fs/open.c:1450 [inline] __do_sys_openat fs/open.c:1466 [inline] __se_sys_openat fs/open.c:1461 [inline] __x64_sys_openat+0x174/0x210 fs/open.c:1461 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x4e0 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 kernel/locking/lockdep.c:3908 [inline] __lock_acquire+0x12a6/0x1ce0 kernel/locking/lockdep.c:5237 lock_acquire kernel/locking/lockdep.c:5868 [inline] lock_acquire+0x179/0x350 kernel/locking/lockdep.c:5825 down_write_nested+0x96/0x210 kernel/locking/rwsem.c:1706 ntfs_look_for_free_space+0xcc/0x720 fs/ntfs3/fsntfs.c:362 attr_allocate_clusters+0x3ff/0x6f0 fs/ntfs3/attrib.c:159 attr_set_size+0x15ae/0x2c50 fs/ntfs3/attrib.c:574 ntfs_set_size+0x13d/0x220 fs/ntfs3/inode.c:861 ntfs_extend+0x7c2/0xa20 fs/ntfs3/file.c:359 ntfs_setattr+0xa46/0xda0 fs/ntfs3/file.c:780 notify_change+0x6a9/0x1230 fs/attr.c:552 do_truncate+0x1d7/0x230 fs/open.c:68 vfs_truncate+0x5d6/0x6e0 fs/open.c:118 do_sys_truncate fs/open.c:141 [inline] __do_sys_truncate fs/open.c:153 [inline] __se_sys_truncate fs/open.c:151 [inline] __x64_sys_truncate+0x172/0x1e0 fs/open.c:151 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x4e0 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.2.6836/21812: #0: ffff88802ff5c428 (sb_writers#13){.+.+}-{0:0}, at: vfs_truncate+0x336/0x6e0 fs/open.c:96 #1: ffff8880574acd08 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: inode_lock_killable include/linux/fs.h:875 [inline] #1: ffff8880574acd08 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: do_truncate+0x146/0x230 fs/open.c:63 #2: ffff8880574aca70 (&ni->ni_lock#2/5){+.+.}-{4:4}, at: ni_lock fs/ntfs3/ntfs_fs.h:1113 [inline] #2: ffff8880574aca70 (&ni->ni_lock#2/5){+.+.}-{4:4}, at: ntfs_set_size+0x111/0x220 fs/ntfs3/inode.c:858 #3: ffff8880574acb20 (&ni->file.run_lock#2){++++}-{4:4}, at: ntfs_set_size+0x119/0x220 fs/ntfs3/inode.c:859 stack backtrace: CPU: 0 UID: 0 PID: 21812 Comm: syz.2.6836 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 print_circular_bug+0x275/0x350 kernel/locking/lockdep.c:2043 check_noncircular+0x14c/0x170 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 kernel/locking/lockdep.c:3908 [inline] __lock_acquire+0x12a6/0x1ce0 kernel/locking/lockdep.c:5237 lock_acquire kernel/locking/lockdep.c:5868 [inline] lock_acquire+0x179/0x350 kernel/locking/lockdep.c:5825 down_write_nested+0x96/0x210 kernel/locking/rwsem.c:1706 ntfs_look_for_free_space+0xcc/0x720 fs/ntfs3/fsntfs.c:362 attr_allocate_clusters+0x3ff/0x6f0 fs/ntfs3/attrib.c:159 attr_set_size+0x15ae/0x2c50 fs/ntfs3/attrib.c:574 ntfs_set_size+0x13d/0x220 fs/ntfs3/inode.c:861 ntfs_extend+0x7c2/0xa20 fs/ntfs3/file.c:359 ntfs_setattr+0xa46/0xda0 fs/ntfs3/file.c:780 notify_change+0x6a9/0x1230 fs/attr.c:552 do_truncate+0x1d7/0x230 fs/open.c:68 vfs_truncate+0x5d6/0x6e0 fs/open.c:118 do_sys_truncate fs/open.c:141 [inline] __do_sys_truncate fs/open.c:153 [inline] __se_sys_truncate fs/open.c:151 [inline] __x64_sys_truncate+0x172/0x1e0 fs/open.c:151 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x4e0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f721798eec9 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:00007f7218894038 EFLAGS: 00000246 ORIG_RAX: 000000000000004c RAX: ffffffffffffffda RBX: 00007f7217be5fa0 RCX: 00007f721798eec9 RDX: 0000000000000000 RSI: 0000000000040200 RDI: 0000200000000000 RBP: 00007f7217a11f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f7217be6038 R14: 00007f7217be5fa0 R15: 00007ffc7970ad58