====================================================== WARNING: possible circular locking dependency detected 6.15.0-rc7-syzkaller-gd7fa1af5b33e #0 Not tainted ------------------------------------------------------ syz.4.687/9613 is trying to acquire lock: ffff0000f487b8a0 (mapping.invalidate_lock#4){++++}-{4:4}, at: filemap_invalidate_lock_shared include/linux/fs.h:922 [inline] ffff0000f487b8a0 (mapping.invalidate_lock#4){++++}-{4:4}, at: filemap_fault+0x564/0x1278 mm/filemap.c:3391 but task is already holding lock: ffff0000c8f0fbc8 (vm_lock){++++}-{0:0}, at: do_page_fault+0x3c4/0x1554 arch/arm64/mm/fault.c:619 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (vm_lock){++++}-{0:0}: __vma_enter_locked+0x184/0x354 mm/memory.c:6473 __vma_start_write+0x34/0x158 mm/memory.c:6497 vma_start_write include/linux/mm.h:829 [inline] vma_expand+0x1b8/0x8f0 mm/vma.c:1086 relocate_vma_down+0x234/0x400 mm/mmap.c:1767 setup_arg_pages+0x4b4/0x920 fs/exec.c:800 load_elf_binary+0x8e4/0x1e9c fs/binfmt_elf.c:1020 search_binary_handler fs/exec.c:1778 [inline] exec_binprm fs/exec.c:1810 [inline] bprm_execve+0x77c/0x10dc fs/exec.c:1862 kernel_execve+0x70c/0x7f4 fs/exec.c:2028 run_init_process+0x1bc/0x1ec init/main.c:1378 try_to_run_init_process+0x20/0x7c init/main.c:1385 kernel_init+0xa8/0x1dc init/main.c:1513 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:847 -> #2 (&mm->mmap_lock){++++}-{4:4}: __might_fault+0xc4/0x124 mm/memory.c:7151 _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+0xe4/0x140 fs/ntfs3/file.c:1380 ioctl_fiemap fs/ioctl.c:220 [inline] do_vfs_ioctl+0x1624/0x2218 fs/ioctl.c:840 __do_sys_ioctl fs/ioctl.c:904 [inline] __se_sys_ioctl fs/ioctl.c:892 [inline] __arm64_sys_ioctl+0xe4/0x1c4 fs/ioctl.c:892 __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 -> #1 (&ni->ni_lock#3/5){+.+.}-{4:4}: __mutex_lock_common+0x1d0/0x2190 kernel/locking/mutex.c:601 __mutex_lock kernel/locking/mutex.c:746 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:798 ni_lock fs/ntfs3/ntfs_fs.h:1105 [inline] ntfs_fallocate+0x624/0xdd4 fs/ntfs3/file.c:685 vfs_fallocate+0x5cc/0x73c fs/open.c:338 ksys_fallocate fs/open.c:362 [inline] __do_sys_fallocate fs/open.c:367 [inline] __se_sys_fallocate fs/open.c:365 [inline] __arm64_sys_fallocate+0xbc/0x10c fs/open.c:365 __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 (mapping.invalidate_lock#4){++++}-{4:4}: check_prev_add kernel/locking/lockdep.c:3166 [inline] check_prevs_add kernel/locking/lockdep.c:3285 [inline] validate_chain kernel/locking/lockdep.c:3909 [inline] __lock_acquire+0x1728/0x3058 kernel/locking/lockdep.c:5235 lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5866 down_read+0x58/0x2f8 kernel/locking/rwsem.c:1524 filemap_invalidate_lock_shared include/linux/fs.h:922 [inline] filemap_fault+0x564/0x1278 mm/filemap.c:3391 __do_fault+0xf8/0x498 mm/memory.c:5098 do_shared_fault mm/memory.c:5582 [inline] do_fault mm/memory.c:5656 [inline] do_pte_missing mm/memory.c:4160 [inline] handle_pte_fault mm/memory.c:5997 [inline] __handle_mm_fault mm/memory.c:6140 [inline] handle_mm_fault+0x1a08/0x4d18 mm/memory.c:6309 do_page_fault+0x428/0x1554 arch/arm64/mm/fault.c:647 do_translation_fault+0xc4/0x114 arch/arm64/mm/fault.c:783 do_mem_abort+0x70/0x194 arch/arm64/mm/fault.c:919 el0_da+0x64/0x160 arch/arm64/kernel/entry-common.c:627 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:789 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 other info that might help us debug this: Chain exists of: mapping.invalidate_lock#4 --> &mm->mmap_lock --> vm_lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- rlock(vm_lock); lock(&mm->mmap_lock); lock(vm_lock); rlock(mapping.invalidate_lock#4); *** DEADLOCK *** 1 lock held by syz.4.687/9613: #0: ffff0000c8f0fbc8 (vm_lock){++++}-{0:0}, at: do_page_fault+0x3c4/0x1554 arch/arm64/mm/fault.c:619 stack backtrace: CPU: 0 UID: 0 PID: 9613 Comm: syz.4.687 Not tainted 6.15.0-rc7-syzkaller-gd7fa1af5b33e #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:466 (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:2079 check_noncircular+0x154/0x174 kernel/locking/lockdep.c:2211 check_prev_add kernel/locking/lockdep.c:3166 [inline] check_prevs_add kernel/locking/lockdep.c:3285 [inline] validate_chain kernel/locking/lockdep.c:3909 [inline] __lock_acquire+0x1728/0x3058 kernel/locking/lockdep.c:5235 lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5866 down_read+0x58/0x2f8 kernel/locking/rwsem.c:1524 filemap_invalidate_lock_shared include/linux/fs.h:922 [inline] filemap_fault+0x564/0x1278 mm/filemap.c:3391 __do_fault+0xf8/0x498 mm/memory.c:5098 do_shared_fault mm/memory.c:5582 [inline] do_fault mm/memory.c:5656 [inline] do_pte_missing mm/memory.c:4160 [inline] handle_pte_fault mm/memory.c:5997 [inline] __handle_mm_fault mm/memory.c:6140 [inline] handle_mm_fault+0x1a08/0x4d18 mm/memory.c:6309 do_page_fault+0x428/0x1554 arch/arm64/mm/fault.c:647 do_translation_fault+0xc4/0x114 arch/arm64/mm/fault.c:783 do_mem_abort+0x70/0x194 arch/arm64/mm/fault.c:919 el0_da+0x64/0x160 arch/arm64/kernel/entry-common.c:627 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:789 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600