====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz.1.635/9551 is trying to acquire lock: ffff0000facc8858 (&ni->ni_lock/5){+.+.}-{4:4}, at: ni_lock fs/ntfs3/ntfs_fs.h:1113 [inline] ffff0000facc8858 (&ni->ni_lock/5){+.+.}-{4:4}, at: ntfs_fallocate+0x624/0xdd4 fs/ntfs3/file.c:616 but task is already holding lock: ffff0000facc8c90 (mapping.invalidate_lock#3){++++}-{4:4}, at: filemap_invalidate_lock include/linux/fs.h:925 [inline] ffff0000facc8c90 (mapping.invalidate_lock#3){++++}-{4:4}, at: ntfs_fallocate+0x324/0xdd4 fs/ntfs3/file.c:546 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (mapping.invalidate_lock#3){++++}-{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_shared_fault mm/memory.c:5637 [inline] do_fault mm/memory.c:5711 [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+0x19fc/0x4d34 mm/memory.c:6364 do_page_fault+0x410/0x13cc arch/arm64/mm/fault.c:653 do_translation_fault+0xc4/0x114 arch/arm64/mm/fault.c:789 do_mem_abort+0x70/0x194 arch/arm64/mm/fault.c:929 el0_da+0x64/0x230 arch/arm64/kernel/entry-common.c:562 el0t_64_sync_handler+0x90/0x12c arch/arm64/kernel/entry-common.c:766 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 -> #2 (vm_lock){++++}-{0:0}: __vma_enter_locked+0x184/0x354 mm/mmap_lock.c:63 __vma_start_write+0x34/0x158 mm/mmap_lock.c:87 vma_start_write include/linux/mmap_lock.h:297 [inline] vma_expand+0x1c0/0x8f8 mm/vma.c:1131 relocate_vma_down+0x234/0x400 mm/vma_exec.c:58 setup_arg_pages+0x4b4/0x920 fs/exec.c:690 load_elf_binary+0x8f4/0x1de4 fs/binfmt_elf.c:1013 search_binary_handler fs/exec.c:1670 [inline] exec_binprm fs/exec.c:1702 [inline] bprm_execve+0x788/0x1104 fs/exec.c:1754 kernel_execve+0x70c/0x7f4 fs/exec.c:1920 run_init_process+0x1bc/0x1ec init/main.c:1390 try_to_run_init_process+0x20/0x7c init/main.c:1397 kernel_init+0xa8/0x1dc init/main.c:1525 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844 -> #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+0x6bc/0x9ec fs/ntfs3/frecord.c:1985 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/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_fallocate+0x624/0xdd4 fs/ntfs3/file.c:616 vfs_fallocate+0x52c/0x668 fs/open.c:342 ksys_fallocate fs/open.c:366 [inline] __do_sys_fallocate fs/open.c:371 [inline] __se_sys_fallocate fs/open.c:369 [inline] __arm64_sys_fallocate+0xbc/0x10c fs/open.c:369 __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/5 --> vm_lock --> mapping.invalidate_lock#3 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(mapping.invalidate_lock#3); lock(vm_lock); lock(mapping.invalidate_lock#3); lock(&ni->ni_lock/5); *** DEADLOCK *** 3 locks held by syz.1.635/9551: #0: ffff0000f934e428 (sb_writers#15){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:3108 [inline] #0: ffff0000f934e428 (sb_writers#15){.+.+}-{0:0}, at: vfs_fallocate+0x4d0/0x668 fs/open.c:341 #1: ffff0000facc8af0 (&sb->s_type->i_mutex_key#37){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:870 [inline] #1: ffff0000facc8af0 (&sb->s_type->i_mutex_key#37){+.+.}-{4:4}, at: ntfs_fallocate+0x270/0xdd4 fs/ntfs3/file.c:532 #2: ffff0000facc8c90 (mapping.invalidate_lock#3){++++}-{4:4}, at: filemap_invalidate_lock include/linux/fs.h:925 [inline] #2: ffff0000facc8c90 (mapping.invalidate_lock#3){++++}-{4:4}, at: ntfs_fallocate+0x324/0xdd4 fs/ntfs3/file.c:546 stack backtrace: CPU: 0 UID: 0 PID: 9551 Comm: syz.1.635 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_fallocate+0x624/0xdd4 fs/ntfs3/file.c:616 vfs_fallocate+0x52c/0x668 fs/open.c:342 ksys_fallocate fs/open.c:366 [inline] __do_sys_fallocate fs/open.c:371 [inline] __se_sys_fallocate fs/open.c:369 [inline] __arm64_sys_fallocate+0xbc/0x10c fs/open.c:369 __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