ntfs3: loop2: Different NTFS' sector size (1024) and media sector size (512)
======================================================
WARNING: possible circular locking dependency detected
6.1.137-syzkaller #0 Not tainted
------------------------------------------------------
syz.2.316/5695 is trying to acquire lock:
ffff0000f3e55dc0 (mapping.invalidate_lock#10){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:813 [inline]
ffff0000f3e55dc0 (mapping.invalidate_lock#10){++++}-{3:3}, at: filemap_fault+0x33c/0xe8c mm/filemap.c:3220

but task is already holding lock:
ffff0000d6519f48 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:136 [inline]
ffff0000d6519f48 (&mm->mmap_lock){++++}-{3:3}, at: get_mmap_lock_carefully mm/memory.c:5322 [inline]
ffff0000d6519f48 (&mm->mmap_lock){++++}-{3:3}, at: lock_mm_and_find_vma+0x38/0x2e8 mm/memory.c:5384

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #2 (&mm->mmap_lock){++++}-{3:3}:
       __might_fault+0xc4/0x124 mm/memory.c:5852
       _copy_to_user include/linux/uaccess.h:143 [inline]
       copy_to_user include/linux/uaccess.h:169 [inline]
       ni_fiemap+0x3fc/0x1030 fs/ntfs3/frecord.c:2140
       ntfs_fiemap+0xe4/0x140 fs/ntfs3/file.c:1170
       ioctl_fiemap fs/ioctl.c:219 [inline]
       do_vfs_ioctl+0x1694/0x206c fs/ioctl.c:810
       __do_sys_ioctl fs/ioctl.c:868 [inline]
       __se_sys_ioctl fs/ioctl.c:856 [inline]
       __arm64_sys_ioctl+0xe4/0x1c8 fs/ioctl.c:856
       __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
       invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
       el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
       do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
       el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637
       el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
       el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585

-> #1 (&ni->ni_lock/5){+.+.}-{3:3}:
       __mutex_lock_common+0x190/0x1f38 kernel/locking/mutex.c:603
       __mutex_lock kernel/locking/mutex.c:747 [inline]
       mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799
       ni_lock fs/ntfs3/ntfs_fs.h:1102 [inline]
       ntfs_fallocate+0x608/0xce4 fs/ntfs3/file.c:567
       vfs_fallocate+0x4a4/0x5f4 fs/open.c:323
       ksys_fallocate fs/open.c:346 [inline]
       __do_sys_fallocate fs/open.c:354 [inline]
       __se_sys_fallocate fs/open.c:352 [inline]
       __arm64_sys_fallocate+0xc0/0x110 fs/open.c:352
       __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
       invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
       el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
       do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
       el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637
       el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
       el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585

-> #0 (mapping.invalidate_lock#10){++++}-{3:3}:
       check_prev_add kernel/locking/lockdep.c:3090 [inline]
       check_prevs_add kernel/locking/lockdep.c:3209 [inline]
       validate_chain kernel/locking/lockdep.c:3825 [inline]
       __lock_acquire+0x293c/0x6544 kernel/locking/lockdep.c:5049
       lock_acquire+0x20c/0x644 kernel/locking/lockdep.c:5662
       down_read+0x64/0x304 kernel/locking/rwsem.c:1520
       filemap_invalidate_lock_shared include/linux/fs.h:813 [inline]
       filemap_fault+0x33c/0xe8c mm/filemap.c:3220
       __do_fault+0x11c/0x3d8 mm/memory.c:4280
       do_read_fault mm/memory.c:4631 [inline]
       do_fault mm/memory.c:4760 [inline]
       handle_pte_fault mm/memory.c:5031 [inline]
       __handle_mm_fault mm/memory.c:5173 [inline]
       handle_mm_fault+0x1ac0/0x2fd4 mm/memory.c:5294
       __do_page_fault arch/arm64/mm/fault.c:499 [inline]
       do_page_fault+0x310/0x99c arch/arm64/mm/fault.c:583
       do_translation_fault+0x94/0xc8 arch/arm64/mm/fault.c:667
       do_mem_abort+0x70/0x194 arch/arm64/mm/fault.c:803
       el1_abort+0x3c/0x5c arch/arm64/kernel/entry-common.c:367
       el1h_64_sync_handler+0x80/0xcc arch/arm64/kernel/entry-common.c:427
       el1h_64_sync+0x64/0x68 arch/arm64/kernel/entry.S:580
       fault_in_readable+0x2c8/0x3e0 mm/gup.c:1915
       fault_in_iov_iter_readable+0x190/0x2c4 lib/iov_iter.c:370
       generic_perform_write+0x17c/0x4b0 mm/filemap.c:3836
       __generic_file_write_iter+0x168/0x37c mm/filemap.c:3974
       ntfs_file_write_iter+0x4d4/0x584 fs/ntfs3/file.c:1081
       do_iter_readv_writev fs/read_write.c:-1 [inline]
       do_iter_write+0x530/0x91c fs/read_write.c:861
       vfs_writev fs/read_write.c:934 [inline]
       do_pwritev+0x1c8/0x2fc fs/read_write.c:1031
       __do_sys_pwritev2 fs/read_write.c:1090 [inline]
       __se_sys_pwritev2 fs/read_write.c:1081 [inline]
       __arm64_sys_pwritev2+0xd4/0x108 fs/read_write.c:1081
       __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
       invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
       el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
       do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
       el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637
       el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
       el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585

other info that might help us debug this:

Chain exists of:
  mapping.invalidate_lock#10 --> &ni->ni_lock/5 --> &mm->mmap_lock

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&mm->mmap_lock);
                               lock(&ni->ni_lock/5);
                               lock(&mm->mmap_lock);
  lock(mapping.invalidate_lock#10);

 *** DEADLOCK ***

3 locks held by syz.2.316/5695:
 #0: ffff0000d4348460 (sb_writers#22){.+.+}-{0:0}, at: vfs_writev fs/read_write.c:933 [inline]
 #0: ffff0000d4348460 (sb_writers#22){.+.+}-{0:0}, at: do_pwritev+0x1b4/0x2fc fs/read_write.c:1031
 #1: ffff0000f3e55c20 (&sb->s_type->i_mutex_key#31){+.+.}-{3:3}, at: inode_trylock include/linux/fs.h:778 [inline]
 #1: ffff0000f3e55c20 (&sb->s_type->i_mutex_key#31){+.+.}-{3:3}, at: ntfs_file_write_iter+0x190/0x584 fs/ntfs3/file.c:1060
 #2: ffff0000d6519f48 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:136 [inline]
 #2: ffff0000d6519f48 (&mm->mmap_lock){++++}-{3:3}, at: get_mmap_lock_carefully mm/memory.c:5322 [inline]
 #2: ffff0000d6519f48 (&mm->mmap_lock){++++}-{3:3}, at: lock_mm_and_find_vma+0x38/0x2e8 mm/memory.c:5384

stack backtrace:
CPU: 0 PID: 5695 Comm: syz.2.316 Not tainted 6.1.137-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call trace:
 dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __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:2048
 check_noncircular+0x240/0x2d4 kernel/locking/lockdep.c:2170
 check_prev_add kernel/locking/lockdep.c:3090 [inline]
 check_prevs_add kernel/locking/lockdep.c:3209 [inline]
 validate_chain kernel/locking/lockdep.c:3825 [inline]
 __lock_acquire+0x293c/0x6544 kernel/locking/lockdep.c:5049
 lock_acquire+0x20c/0x644 kernel/locking/lockdep.c:5662
 down_read+0x64/0x304 kernel/locking/rwsem.c:1520
 filemap_invalidate_lock_shared include/linux/fs.h:813 [inline]
 filemap_fault+0x33c/0xe8c mm/filemap.c:3220
 __do_fault+0x11c/0x3d8 mm/memory.c:4280
 do_read_fault mm/memory.c:4631 [inline]
 do_fault mm/memory.c:4760 [inline]
 handle_pte_fault mm/memory.c:5031 [inline]
 __handle_mm_fault mm/memory.c:5173 [inline]
 handle_mm_fault+0x1ac0/0x2fd4 mm/memory.c:5294
 __do_page_fault arch/arm64/mm/fault.c:499 [inline]
 do_page_fault+0x310/0x99c arch/arm64/mm/fault.c:583
 do_translation_fault+0x94/0xc8 arch/arm64/mm/fault.c:667
 do_mem_abort+0x70/0x194 arch/arm64/mm/fault.c:803
 el1_abort+0x3c/0x5c arch/arm64/kernel/entry-common.c:367
 el1h_64_sync_handler+0x80/0xcc arch/arm64/kernel/entry-common.c:427
 el1h_64_sync+0x64/0x68 arch/arm64/kernel/entry.S:580
 fault_in_readable+0x2c8/0x3e0 mm/gup.c:1915
 fault_in_iov_iter_readable+0x190/0x2c4 lib/iov_iter.c:370
 generic_perform_write+0x17c/0x4b0 mm/filemap.c:3836
 __generic_file_write_iter+0x168/0x37c mm/filemap.c:3974
 ntfs_file_write_iter+0x4d4/0x584 fs/ntfs3/file.c:1081
 do_iter_readv_writev fs/read_write.c:-1 [inline]
 do_iter_write+0x530/0x91c fs/read_write.c:861
 vfs_writev fs/read_write.c:934 [inline]
 do_pwritev+0x1c8/0x2fc fs/read_write.c:1031
 __do_sys_pwritev2 fs/read_write.c:1090 [inline]
 __se_sys_pwritev2 fs/read_write.c:1081 [inline]
 __arm64_sys_pwritev2+0xd4/0x108 fs/read_write.c:1081
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585