loop3: detected capacity change from 0 to 4096 ntfs3(loop3): Mark volume as dirty due to NTFS errors ====================================================== WARNING: possible circular locking dependency detected 6.16.0-rc2-syzkaller-g9aa9b43d689e #0 Not tainted ------------------------------------------------------ syz.3.182/7541 is trying to acquire lock: ffff0000d1d94270 (&wnd->rw_lock){++++}-{4:4}, at: mark_as_free_ex+0x40/0x324 fs/ntfs3/fsntfs.c:2460 but task is already holding lock: ffff000107524b20 (&ni->file.run_lock#2){++++}-{4:4}, at: ntfs_truncate fs/ntfs3/file.c:439 [inline] ffff000107524b20 (&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_one_qstr_excl_raw+0x10c/0x25c fs/namei.c:1689 lookup_one_qstr_excl fs/namei.c:1711 [inline] do_unlinkat+0x1a0/0x4dc fs/namei.c:4638 __do_sys_unlinkat fs/namei.c:4691 [inline] __se_sys_unlinkat fs/namei.c:4684 [inline] __arm64_sys_unlinkat+0xdc/0xf8 fs/namei.c:4684 __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+0x58/0x17c arch/arm64/kernel/entry-common.c:767 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 -> #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 vfs_truncate+0x398/0x444 fs/open.c:118 do_sys_truncate+0xe4/0x1a8 fs/open.c:141 __do_sys_truncate fs/open.c:153 [inline] __se_sys_truncate fs/open.c:151 [inline] __arm64_sys_truncate+0x5c/0x74 fs/open.c:151 __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+0x58/0x17c arch/arm64/kernel/entry-common.c:767 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 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.3.182/7541: #0: ffff0000d1d92428 (sb_writers#11){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:557 #1: ffff000107524d08 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: inode_lock_killable include/linux/fs.h:872 [inline] #1: ffff000107524d08 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: do_truncate+0x164/0x210 fs/open.c:63 #2: ffff000107524a70 (&ni->ni_lock/5){+.+.}-{4:4}, at: ni_lock fs/ntfs3/ntfs_fs.h:1100 [inline] #2: ffff000107524a70 (&ni->ni_lock/5){+.+.}-{4:4}, at: ntfs_truncate fs/ntfs3/file.c:437 [inline] #2: ffff000107524a70 (&ni->ni_lock/5){+.+.}-{4:4}, at: ntfs_setattr+0x3c0/0x910 fs/ntfs3/file.c:758 #3: ffff000107524b20 (&ni->file.run_lock#2){++++}-{4:4}, at: ntfs_truncate fs/ntfs3/file.c:439 [inline] #3: ffff000107524b20 (&ni->file.run_lock#2){++++}-{4:4}, at: ntfs_setattr+0x3cc/0x910 fs/ntfs3/file.c:758 stack backtrace: CPU: 1 UID: 0 PID: 7541 Comm: syz.3.182 Not tainted 6.16.0-rc2-syzkaller-g9aa9b43d689e #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:501 (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 vfs_truncate+0x398/0x444 fs/open.c:118 do_sys_truncate+0xe4/0x1a8 fs/open.c:141 __do_sys_truncate fs/open.c:153 [inline] __se_sys_truncate fs/open.c:151 [inline] __arm64_sys_truncate+0x5c/0x74 fs/open.c:151 __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+0x58/0x17c arch/arm64/kernel/entry-common.c:767 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600