loop5: detected capacity change from 0 to 4096 ntfs3: loop5: Different NTFS sector size (4096) and media sector size (512). ntfs3: loop5: Mark volume as dirty due to NTFS errors ntfs3: loop5: Failed to initialize $Extend/$Reparse. ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz.5.7694/25741 is trying to acquire lock: ffff88807d98e270 (&wnd->rw_lock){++++}-{3:3}, at: ntfs_look_for_free_space+0xdf/0x630 fs/ntfs3/fsntfs.c:362 but task is already holding lock: ffff88805edab550 (&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 ntfs_dir_emit fs/ntfs3/dir.c:338 [inline] ntfs_read_hdr+0x77c/0xbd0 fs/ntfs3/dir.c:386 ntfs_readdir+0x8c9/0xe00 fs/ntfs3/dir.c:496 iterate_dir+0x1bd/0x590 fs/readdir.c:106 __do_sys_getdents64 fs/readdir.c:405 [inline] __se_sys_getdents64+0xf6/0x270 fs/readdir.c:390 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+0x303/0x850 fs/ntfs3/frecord.c:1145 ni_insert_resident+0x7d/0x380 fs/ntfs3/frecord.c:1529 ntfs_set_ea+0xb06/0x1300 fs/ntfs3/xattr.c:448 ntfs_setxattr+0x600/0x910 fs/ntfs3/xattr.c:948 __vfs_setxattr+0x437/0x470 fs/xattr.c:201 __vfs_setxattr_noperm+0x12a/0x5e0 fs/xattr.c:235 vfs_setxattr+0x16b/0x2f0 fs/xattr.c:322 do_setxattr fs/xattr.c:630 [inline] path_setxattr+0x33a/0x590 fs/xattr.c:659 __do_sys_setxattr fs/xattr.c:677 [inline] __se_sys_setxattr fs/xattr.c:673 [inline] __x64_sys_setxattr+0xbb/0xd0 fs/xattr.c:673 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 *** 5 locks held by syz.5.7694/25741: #0: ffff88807d98c418 (sb_writers#22){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:412 #1: ffff888077767250 (&sb->s_type->i_mutex_key#27){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] #1: ffff888077767250 (&sb->s_type->i_mutex_key#27){+.+.}-{3:3}, at: vfs_setxattr+0x144/0x2f0 fs/xattr.c:321 #2: ffff888077766fa0 (&ni->ni_lock/5){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1123 [inline] #2: ffff888077766fa0 (&ni->ni_lock/5){+.+.}-{3:3}, at: ntfs_set_ea+0x13a/0x1300 fs/ntfs3/xattr.c:335 #3: ffff88807d98e128 (&wnd->rw_lock/1){+.+.}-{3:3}, at: ntfs_look_free_mft+0x171/0xd90 fs/ntfs3/fsntfs.c:571 #4: ffff88805edab550 (&ni->file.run_lock#2){++++}-{3:3}, at: ntfs_extend_mft+0x145/0x470 fs/ntfs3/fsntfs.c:511 stack backtrace: CPU: 0 PID: 25741 Comm: syz.5.7694 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 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+0x303/0x850 fs/ntfs3/frecord.c:1145 ni_insert_resident+0x7d/0x380 fs/ntfs3/frecord.c:1529 ntfs_set_ea+0xb06/0x1300 fs/ntfs3/xattr.c:448 ntfs_setxattr+0x600/0x910 fs/ntfs3/xattr.c:948 __vfs_setxattr+0x437/0x470 fs/xattr.c:201 __vfs_setxattr_noperm+0x12a/0x5e0 fs/xattr.c:235 vfs_setxattr+0x16b/0x2f0 fs/xattr.c:322 do_setxattr fs/xattr.c:630 [inline] path_setxattr+0x33a/0x590 fs/xattr.c:659 __do_sys_setxattr fs/xattr.c:677 [inline] __se_sys_setxattr fs/xattr.c:673 [inline] __x64_sys_setxattr+0xbb/0xd0 fs/xattr.c:673 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: 0033:0x7f85c0d9e0d9 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:00007f85beff6028 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc RAX: ffffffffffffffda RBX: 00007f85c1025fa0 RCX: 00007f85c0d9e0d9 RDX: 0000200000001400 RSI: 00002000000001c0 RDI: 0000200000000380 RBP: 00007f85c0e35024 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000835 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f85c1026038 R14: 00007f85c1025fa0 R15: 00007ffdb23eb928 ntfs3: loop5: ino=1e, "file1" failed to parse mft record ntfs3: loop5: ino=1e, "file1" attr_set_size