loop1: detected capacity change from 0 to 4096 ntfs3(loop1): ino=1a, mi_enum_attr ntfs3(loop1): Mark volume as dirty due to NTFS errors ====================================================== WARNING: possible circular locking dependency detected 6.16.0-rc7-syzkaller-g82af5ea7c611 #0 Not tainted ------------------------------------------------------ syz.1.213/7651 is trying to acquire lock: ffff0000d5404270 (&wnd->rw_lock){++++}-{4:4}, at: mark_as_free_ex+0x40/0x324 fs/ntfs3/fsntfs.c:2460 but task is already holding lock: ffff000102411060 (&ni->file.run_lock#2){++++}-{4:4}, at: ntfs_truncate fs/ntfs3/file.c:439 [inline] ffff000102411060 (&ni->file.run_lock#2){++++}-{4:4}, at: ntfs_setattr+0x3cc/0x910 fs/ntfs3/file.c:758 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+0x58/0x2f8 kernel/locking/rwsem.c:1524 run_unpack_ex+0x6cc/0x998 fs/ntfs3/run.c:1119 ntfs_read_mft fs/ntfs3/inode.c:401 [inline] ntfs_iget5+0x19f4/0x2a44 fs/ntfs3/inode.c:540 dir_search_u+0x250/0x2a4 fs/ntfs3/dir.c:264 ntfs_lookup+0x100/0x1f0 fs/ntfs3/namei.c:85 lookup_open fs/namei.c:3695 [inline] open_last_lookups fs/namei.c:3816 [inline] path_openat+0xcc0/0x2c40 fs/namei.c:4052 do_filp_open+0x18c/0x36c fs/namei.c:4082 do_sys_openat2+0x11c/0x1b4 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] __arm64_sys_openat+0x120/0x158 fs/open.c:1463 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x180 arch/arm64/kernel/entry-common.c:879 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 -> #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 kernel/locking/lockdep.c:3911 [inline] __lock_acquire+0x1774/0x30a4 kernel/locking/lockdep.c:5240 lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5871 down_write_nested+0x58/0xcc kernel/locking/rwsem.c:1693 mark_as_free_ex+0x40/0x324 fs/ntfs3/fsntfs.c:2460 run_deallocate_ex+0x150/0x2bc fs/ntfs3/attrib.c:122 attr_set_size+0xbb8/0x2368 fs/ntfs3/attrib.c:753 ntfs_truncate fs/ntfs3/file.c:440 [inline] ntfs_setattr+0x458/0x910 fs/ntfs3/file.c:758 notify_change+0x9a4/0xc50 fs/attr.c:552 do_truncate+0x198/0x210 fs/open.c:68 handle_truncate fs/namei.c:3517 [inline] do_open fs/namei.c:3900 [inline] path_openat+0x25a0/0x2c40 fs/namei.c:4055 do_filp_open+0x18c/0x36c fs/namei.c:4082 do_sys_openat2+0x11c/0x1b4 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] __arm64_sys_openat+0x120/0x158 fs/open.c:1463 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x180 arch/arm64/kernel/entry-common.c:879 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 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.1.213/7651: #0: ffff0000d5406428 (sb_writers#14){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:557 #1: ffff000102411248 (&sb->s_type->i_mutex_key#30){+.+.}-{4:4}, at: inode_lock_killable include/linux/fs.h:874 [inline] #1: ffff000102411248 (&sb->s_type->i_mutex_key#30){+.+.}-{4:4}, at: do_truncate+0x164/0x210 fs/open.c:63 #2: ffff000102410fb0 (&ni->ni_lock/5){+.+.}-{4:4}, at: ni_lock fs/ntfs3/ntfs_fs.h:1100 [inline] #2: ffff000102410fb0 (&ni->ni_lock/5){+.+.}-{4:4}, at: ntfs_truncate fs/ntfs3/file.c:437 [inline] #2: ffff000102410fb0 (&ni->ni_lock/5){+.+.}-{4:4}, at: ntfs_setattr+0x3c0/0x910 fs/ntfs3/file.c:758 #3: ffff000102411060 (&ni->file.run_lock#2){++++}-{4:4}, at: ntfs_truncate fs/ntfs3/file.c:439 [inline] #3: ffff000102411060 (&ni->file.run_lock#2){++++}-{4:4}, at: ntfs_setattr+0x3cc/0x910 fs/ntfs3/file.c:758 stack backtrace: CPU: 1 UID: 0 PID: 7651 Comm: syz.1.213 Not tainted 6.16.0-rc7-syzkaller-g82af5ea7c611 #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/18/2025 Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 print_circular_bug+0x324/0x32c kernel/locking/lockdep.c:2046 check_noncircular+0x154/0x174 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 kernel/locking/lockdep.c:3911 [inline] __lock_acquire+0x1774/0x30a4 kernel/locking/lockdep.c:5240 lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5871 down_write_nested+0x58/0xcc kernel/locking/rwsem.c:1693 mark_as_free_ex+0x40/0x324 fs/ntfs3/fsntfs.c:2460 run_deallocate_ex+0x150/0x2bc fs/ntfs3/attrib.c:122 attr_set_size+0xbb8/0x2368 fs/ntfs3/attrib.c:753 ntfs_truncate fs/ntfs3/file.c:440 [inline] ntfs_setattr+0x458/0x910 fs/ntfs3/file.c:758 notify_change+0x9a4/0xc50 fs/attr.c:552 do_truncate+0x198/0x210 fs/open.c:68 handle_truncate fs/namei.c:3517 [inline] do_open fs/namei.c:3900 [inline] path_openat+0x25a0/0x2c40 fs/namei.c:4055 do_filp_open+0x18c/0x36c fs/namei.c:4082 do_sys_openat2+0x11c/0x1b4 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] __arm64_sys_openat+0x120/0x158 fs/open.c:1463 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x180 arch/arm64/kernel/entry-common.c:879 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 ntfs3(loop1): mft corrupted