====================================================== WARNING: possible circular locking dependency detected 5.15.182-syzkaller #0 Not tainted ------------------------------------------------------ syz.0.401/5641 is trying to acquire lock: ffff0000de73ddc0 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:842 [inline] ffff0000de73ddc0 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: filemap_fault+0x4b0/0xeac mm/filemap.c:3081 but task is already holding lock: ffff0000c83df418 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:136 [inline] ffff0000c83df418 (&mm->mmap_lock){++++}-{3:3}, at: do_page_fault+0x364/0xad4 arch/arm64/mm/fault.c:586 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&mm->mmap_lock){++++}-{3:3}: __might_fault+0xc8/0x128 mm/memory.c:5357 _copy_to_user include/linux/uaccess.h:174 [inline] copy_to_user include/linux/uaccess.h:200 [inline] fiemap_fill_next_extent+0x15c/0x3e0 fs/ioctl.c:144 ni_fiemap+0x5d8/0x9d0 fs/ntfs3/frecord.c:1998 ntfs_fiemap+0xe4/0x140 fs/ntfs3/file.c:1233 ioctl_fiemap fs/ioctl.c:219 [inline] do_vfs_ioctl+0x18d8/0x2370 fs/ioctl.c:814 __do_sys_ioctl fs/ioctl.c:872 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __arm64_sys_ioctl+0xe4/0x1c8 fs/ioctl.c:860 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 -> #2 (&ni->file.run_lock){++++}-{3:3}: down_write+0xbc/0x12c kernel/locking/rwsem.c:1551 ntfs_set_size+0x130/0x200 fs/ntfs3/inode.c:844 ntfs_extend+0x130/0x444 fs/ntfs3/file.c:431 ntfs3_setattr+0x248/0x924 fs/ntfs3/file.c:771 notify_change+0xa08/0xcd8 fs/attr.c:505 do_truncate+0x178/0x1f0 fs/open.c:65 vfs_truncate+0x23c/0x2b0 fs/open.c:111 do_sys_truncate+0xe8/0x1b0 fs/open.c:134 __do_sys_truncate fs/open.c:146 [inline] __se_sys_truncate fs/open.c:144 [inline] __arm64_sys_truncate+0x5c/0x70 fs/open.c:144 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 -> #1 (&ni->ni_lock/5){+.+.}-{3:3}: __mutex_lock_common+0x194/0x1edc kernel/locking/mutex.c:596 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0xac/0x11c kernel/locking/mutex.c:743 ni_lock fs/ntfs3/ntfs_fs.h:1100 [inline] ntfs_readpage+0x140/0x1c0 fs/ntfs3/inode.c:725 filemap_read_page+0x150/0x454 mm/filemap.c:2386 filemap_update_page mm/filemap.c:2464 [inline] filemap_get_pages mm/filemap.c:2574 [inline] filemap_read+0xd84/0x1720 mm/filemap.c:2634 generic_file_read_iter+0xe8/0x518 mm/filemap.c:2794 ntfs_file_read_iter+0x184/0x1e0 fs/ntfs3/file.c:830 call_read_iter include/linux/fs.h:2166 [inline] generic_file_splice_read+0x310/0x4cc fs/splice.c:311 do_splice_to fs/splice.c:796 [inline] splice_file_to_pipe+0x324/0x4f4 fs/splice.c:1018 do_sendfile+0x3fc/0xc88 fs/read_write.c:1256 __do_sys_sendfile64 fs/read_write.c:1317 [inline] __se_sys_sendfile64 fs/read_write.c:1303 [inline] __arm64_sys_sendfile64+0x130/0x3b0 fs/read_write.c:1303 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 -> #0 (mapping.invalidate_lock#3){.+.+}-{3:3}: check_prev_add kernel/locking/lockdep.c:3053 [inline] check_prevs_add kernel/locking/lockdep.c:3172 [inline] validate_chain kernel/locking/lockdep.c:3788 [inline] __lock_acquire+0x2928/0x651c kernel/locking/lockdep.c:5012 lock_acquire+0x1f4/0x620 kernel/locking/lockdep.c:5623 down_read+0xc0/0x390 kernel/locking/rwsem.c:1498 filemap_invalidate_lock_shared include/linux/fs.h:842 [inline] filemap_fault+0x4b0/0xeac mm/filemap.c:3081 __do_fault+0x120/0x5d0 mm/memory.c:3928 do_shared_fault mm/memory.c:4318 [inline] do_fault mm/memory.c:4396 [inline] handle_pte_fault mm/memory.c:4650 [inline] __handle_mm_fault mm/memory.c:4785 [inline] handle_mm_fault+0x15b8/0x2950 mm/memory.c:4883 __do_page_fault arch/arm64/mm/fault.c:505 [inline] do_page_fault+0x694/0xad4 arch/arm64/mm/fault.c:605 do_translation_fault+0xe0/0x130 arch/arm64/mm/fault.c:686 do_mem_abort+0x6c/0x1ac arch/arm64/mm/fault.c:819 el0_da+0x90/0x1fc arch/arm64/kernel/entry-common.c:494 el0t_64_sync_handler+0xd8/0xe4 arch/arm64/kernel/entry-common.c:629 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 other info that might help us debug this: Chain exists of: mapping.invalidate_lock#3 --> &ni->file.run_lock --> &mm->mmap_lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&mm->mmap_lock); lock(&ni->file.run_lock); lock(&mm->mmap_lock); lock(mapping.invalidate_lock#3); *** DEADLOCK *** 1 lock held by syz.0.401/5641: #0: ffff0000c83df418 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:136 [inline] #0: ffff0000c83df418 (&mm->mmap_lock){++++}-{3:3}, at: do_page_fault+0x364/0xad4 arch/arm64/mm/fault.c:586 stack backtrace: CPU: 0 PID: 5641 Comm: syz.0.401 Not tainted 5.15.182-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack+0x30/0x40 lib/dump_stack.c:88 dump_stack_lvl+0xf8/0x160 lib/dump_stack.c:106 dump_stack+0x1c/0x5c lib/dump_stack.c:113 print_circular_bug+0x148/0x1b0 kernel/locking/lockdep.c:2011 check_noncircular+0x240/0x2d4 kernel/locking/lockdep.c:2133 check_prev_add kernel/locking/lockdep.c:3053 [inline] check_prevs_add kernel/locking/lockdep.c:3172 [inline] validate_chain kernel/locking/lockdep.c:3788 [inline] __lock_acquire+0x2928/0x651c kernel/locking/lockdep.c:5012 lock_acquire+0x1f4/0x620 kernel/locking/lockdep.c:5623 down_read+0xc0/0x390 kernel/locking/rwsem.c:1498 filemap_invalidate_lock_shared include/linux/fs.h:842 [inline] filemap_fault+0x4b0/0xeac mm/filemap.c:3081 __do_fault+0x120/0x5d0 mm/memory.c:3928 do_shared_fault mm/memory.c:4318 [inline] do_fault mm/memory.c:4396 [inline] handle_pte_fault mm/memory.c:4650 [inline] __handle_mm_fault mm/memory.c:4785 [inline] handle_mm_fault+0x15b8/0x2950 mm/memory.c:4883 __do_page_fault arch/arm64/mm/fault.c:505 [inline] do_page_fault+0x694/0xad4 arch/arm64/mm/fault.c:605 do_translation_fault+0xe0/0x130 arch/arm64/mm/fault.c:686 do_mem_abort+0x6c/0x1ac arch/arm64/mm/fault.c:819 el0_da+0x90/0x1fc arch/arm64/kernel/entry-common.c:494 el0t_64_sync_handler+0xd8/0xe4 arch/arm64/kernel/entry-common.c:629 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584