ntfs3(loop5): Failed to initialize $Extend/$ObjId. ntfs3(loop5): ino=1e, "file1" attr_set_size ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz.5.410/8243 is trying to acquire lock: ffff0000f85cca70 (&ni->ni_lock#2/5){+.+.}-{4:4}, at: ni_lock fs/ntfs3/ntfs_fs.h:1113 [inline] ffff0000f85cca70 (&ni->ni_lock#2/5){+.+.}-{4:4}, at: ntfs_read_folio+0xa8/0x1c0 fs/ntfs3/inode.c:726 but task is already holding lock: ffff0000f85ccea8 (mapping.invalidate_lock#10){++++}-{4:4}, at: filemap_invalidate_lock_shared include/linux/fs.h:935 [inline] ffff0000f85ccea8 (mapping.invalidate_lock#10){++++}-{4:4}, at: filemap_create_folio mm/filemap.c:2539 [inline] ffff0000f85ccea8 (mapping.invalidate_lock#10){++++}-{4:4}, at: filemap_get_pages+0xad8/0x19c8 mm/filemap.c:2609 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (mapping.invalidate_lock#10){++++}-{4:4}: down_read+0x58/0x2f8 kernel/locking/rwsem.c:1537 filemap_invalidate_lock_shared include/linux/fs.h:935 [inline] filemap_fault+0x3fc/0x1280 mm/filemap.c:3433 __do_fault+0x1fc/0x4cc mm/memory.c:5152 do_read_fault mm/memory.c:5573 [inline] do_fault mm/memory.c:5707 [inline] do_pte_missing mm/memory.c:4234 [inline] handle_pte_fault mm/memory.c:6052 [inline] __handle_mm_fault mm/memory.c:6195 [inline] handle_mm_fault+0x2c90/0x4d34 mm/memory.c:6364 do_page_fault+0x57c/0x13cc arch/arm64/mm/fault.c:696 do_translation_fault+0xc4/0x114 arch/arm64/mm/fault.c:789 do_mem_abort+0x70/0x194 arch/arm64/mm/fault.c:929 el1_abort+0x40/0x64 arch/arm64/kernel/entry-common.c:325 el1h_64_sync_handler+0x50/0xfc arch/arm64/kernel/entry-common.c:459 el1h_64_sync+0x6c/0x70 arch/arm64/kernel/entry.S:591 __arch_copy_from_user+0xb8/0x23c arch/arm64/lib/copy_template.S:104 copy_from_user include/linux/uaccess.h:210 [inline] __do_sys_setrlimit kernel/sys.c:1780 [inline] __se_sys_setrlimit kernel/sys.c:1776 [inline] __arm64_sys_setrlimit+0xc4/0x144 kernel/sys.c:1776 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 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+0x5c/0x254 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:763 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 -> #1 (&mm->mmap_lock){++++}-{4:4}: __might_fault+0xc4/0x124 mm/memory.c:6958 _inline_copy_to_user include/linux/uaccess.h:192 [inline] copy_to_user include/linux/uaccess.h:223 [inline] fiemap_fill_next_extent+0x17c/0x3f0 fs/ioctl.c:145 ni_fiemap+0x764/0x9ec fs/ntfs3/frecord.c:2007 ntfs_fiemap+0x10c/0x188 fs/ntfs3/file.c:1326 ioctl_fiemap fs/ioctl.c:220 [inline] do_vfs_ioctl+0x1140/0x1834 fs/ioctl.c:532 __do_sys_ioctl fs/ioctl.c:596 [inline] __se_sys_ioctl fs/ioctl.c:584 [inline] __arm64_sys_ioctl+0xe4/0x1c4 fs/ioctl.c:584 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 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+0x5c/0x254 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:763 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 -> #0 (&ni->ni_lock#2/5){+.+.}-{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+0x1774/0x30a4 kernel/locking/lockdep.c:5237 lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5868 __mutex_lock_common+0x1d0/0x2678 kernel/locking/mutex.c:598 __mutex_lock kernel/locking/mutex.c:760 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:812 ni_lock fs/ntfs3/ntfs_fs.h:1113 [inline] ntfs_read_folio+0xa8/0x1c0 fs/ntfs3/inode.c:726 filemap_read_folio+0xec/0x2f8 mm/filemap.c:2413 filemap_create_folio mm/filemap.c:2548 [inline] filemap_get_pages+0xbc4/0x19c8 mm/filemap.c:2609 filemap_splice_read+0x454/0xad8 mm/filemap.c:2991 ntfs_file_splice_read+0x158/0x1e0 fs/ntfs3/file.c:883 do_splice_read fs/splice.c:982 [inline] splice_direct_to_actor+0x364/0x994 fs/splice.c:1086 do_splice_direct_actor fs/splice.c:1204 [inline] do_splice_direct+0x130/0x210 fs/splice.c:1230 vfs_copy_file_range+0x90c/0x1058 fs/read_write.c:1627 __do_sys_copy_file_range fs/read_write.c:1677 [inline] __se_sys_copy_file_range fs/read_write.c:1644 [inline] __arm64_sys_copy_file_range+0x308/0x5d4 fs/read_write.c:1644 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 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+0x5c/0x254 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:763 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 other info that might help us debug this: Chain exists of: &ni->ni_lock#2/5 --> &mm->mmap_lock --> mapping.invalidate_lock#10 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- rlock(mapping.invalidate_lock#10); lock(&mm->mmap_lock); lock(mapping.invalidate_lock#10); lock(&ni->ni_lock#2/5); *** DEADLOCK *** 1 lock held by syz.5.410/8243: #0: ffff0000f85ccea8 (mapping.invalidate_lock#10){++++}-{4:4}, at: filemap_invalidate_lock_shared include/linux/fs.h:935 [inline] #0: ffff0000f85ccea8 (mapping.invalidate_lock#10){++++}-{4:4}, at: filemap_create_folio mm/filemap.c:2539 [inline] #0: ffff0000f85ccea8 (mapping.invalidate_lock#10){++++}-{4:4}, at: filemap_get_pages+0xad8/0x19c8 mm/filemap.c:2609 stack backtrace: CPU: 1 UID: 0 PID: 8243 Comm: syz.5.410 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 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:2043 check_noncircular+0x154/0x174 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+0x1774/0x30a4 kernel/locking/lockdep.c:5237 lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5868 __mutex_lock_common+0x1d0/0x2678 kernel/locking/mutex.c:598 __mutex_lock kernel/locking/mutex.c:760 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:812 ni_lock fs/ntfs3/ntfs_fs.h:1113 [inline] ntfs_read_folio+0xa8/0x1c0 fs/ntfs3/inode.c:726 filemap_read_folio+0xec/0x2f8 mm/filemap.c:2413 filemap_create_folio mm/filemap.c:2548 [inline] filemap_get_pages+0xbc4/0x19c8 mm/filemap.c:2609 filemap_splice_read+0x454/0xad8 mm/filemap.c:2991 ntfs_file_splice_read+0x158/0x1e0 fs/ntfs3/file.c:883 do_splice_read fs/splice.c:982 [inline] splice_direct_to_actor+0x364/0x994 fs/splice.c:1086 do_splice_direct_actor fs/splice.c:1204 [inline] do_splice_direct+0x130/0x210 fs/splice.c:1230 vfs_copy_file_range+0x90c/0x1058 fs/read_write.c:1627 __do_sys_copy_file_range fs/read_write.c:1677 [inline] __se_sys_copy_file_range fs/read_write.c:1644 [inline] __arm64_sys_copy_file_range+0x308/0x5d4 fs/read_write.c:1644 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 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+0x5c/0x254 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:763 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596