====================================================== WARNING: possible circular locking dependency detected 5.15.185-syzkaller #0 Not tainted ------------------------------------------------------ syz.3.175/4796 is trying to acquire lock: ffff0000c7e58118 (&mm->mmap_lock){++++}-{3:3}, at: __might_fault+0xa0/0x128 mm/memory.c:5356 but task is already holding lock: ffff0000ea259f30 (&ni->file.run_lock){++++}-{3:3}, at: ni_fiemap+0x248/0x9d0 fs/ntfs3/frecord.c:1915 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (&ni->file.run_lock){++++}-{3:3}: down_read+0xc0/0x390 kernel/locking/rwsem.c:1498 attr_data_get_block+0xfc/0x12b4 fs/ntfs3/attrib.c:831 ntfs_get_block_vbo+0x290/0xa94 fs/ntfs3/inode.c:591 ntfs_get_block+0x84/0xc4 fs/ntfs3/inode.c:690 do_mpage_readpage+0x7b0/0x1ab4 fs/mpage.c:231 mpage_readahead+0x2f8/0x774 fs/mpage.c:389 ntfs_readahead+0x1a8/0x1f8 fs/ntfs3/inode.c:762 read_pages+0x138/0x424 mm/readahead.c:130 page_cache_ra_unbounded+0x4fc/0x5dc mm/readahead.c:239 do_page_cache_ra+0xfc/0x114 mm/readahead.c:269 do_sync_mmap_readahead+0x468/0x61c mm/filemap.c:2996 filemap_fault+0x520/0xeac mm/filemap.c:3089 __do_fault+0x120/0x5d0 mm/memory.c:3928 do_read_fault mm/memory.c:4264 [inline] do_fault mm/memory.c:4392 [inline] handle_pte_fault mm/memory.c:4650 [inline] __handle_mm_fault mm/memory.c:4785 [inline] handle_mm_fault+0x1b4c/0x2950 mm/memory.c:4883 faultin_page mm/gup.c:976 [inline] __get_user_pages+0x3f4/0x9a4 mm/gup.c:1197 populate_vma_page_range+0x1f4/0x284 mm/gup.c:1529 __mm_populate+0x238/0x36c mm/gup.c:1638 mm_populate include/linux/mm.h:2632 [inline] vm_mmap_pgoff+0x1cc/0x284 mm/util.c:556 ksys_mmap_pgoff+0x410/0x620 mm/mmap.c:1623 __do_sys_mmap arch/arm64/kernel/sys.c:28 [inline] __se_sys_mmap arch/arm64/kernel/sys.c:21 [inline] __arm64_sys_mmap+0xf8/0x110 arch/arm64/kernel/sys.c:21 __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 (mapping.invalidate_lock#6){.+.+}-{3:3}: 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_read_fault mm/memory.c:4264 [inline] do_fault mm/memory.c:4392 [inline] handle_pte_fault mm/memory.c:4650 [inline] __handle_mm_fault mm/memory.c:4785 [inline] handle_mm_fault+0x1b4c/0x2950 mm/memory.c:4883 faultin_page mm/gup.c:976 [inline] __get_user_pages+0x3f4/0x9a4 mm/gup.c:1197 __get_user_pages_locked mm/gup.c:1382 [inline] get_user_pages_unlocked+0x1c0/0x668 mm/gup.c:2222 __gup_longterm_unlocked mm/gup.c:2823 [inline] internal_get_user_pages_fast+0x183c/0x1c18 mm/gup.c:2911 get_user_pages_fast+0x60/0x94 mm/gup.c:3003 iov_iter_get_pages+0x1d4/0x4fc lib/iov_iter.c:1544 dio_refill_pages fs/direct-io.c:173 [inline] dio_get_page fs/direct-io.c:217 [inline] do_direct_IO fs/direct-io.c:938 [inline] do_blockdev_direct_IO fs/direct-io.c:1276 [inline] __blockdev_direct_IO+0xc5c/0x26e0 fs/direct-io.c:1368 blockdev_direct_IO include/linux/fs.h:3344 [inline] ntfs_direct_IO+0x174/0x324 fs/ntfs3/inode.c:798 generic_file_direct_write+0x30c/0x608 mm/filemap.c:3687 __generic_file_write_iter+0x28c/0x454 mm/filemap.c:3869 ntfs_file_write_iter+0x408/0x49c fs/ntfs3/file.c:1144 call_write_iter include/linux/fs.h:2172 [inline] new_sync_write fs/read_write.c:507 [inline] vfs_write+0x7c8/0xa2c fs/read_write.c:594 ksys_write+0x120/0x210 fs/read_write.c:647 __do_sys_write fs/read_write.c:659 [inline] __se_sys_write fs/read_write.c:656 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:656 __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 (&mm->mmap_lock){++++}-{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 __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 other info that might help us debug this: Chain exists of: &mm->mmap_lock --> mapping.invalidate_lock#6 --> &ni->file.run_lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ni->file.run_lock); lock(mapping.invalidate_lock#6); lock(&ni->file.run_lock); lock(&mm->mmap_lock); *** DEADLOCK *** 2 locks held by syz.3.175/4796: #0: ffff0000ea259e80 (&ni->ni_lock/5){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1100 [inline] #0: ffff0000ea259e80 (&ni->ni_lock/5){+.+.}-{3:3}, at: ntfs_fiemap+0xd0/0x140 fs/ntfs3/file.c:1231 #1: ffff0000ea259f30 (&ni->file.run_lock){++++}-{3:3}, at: ni_fiemap+0x248/0x9d0 fs/ntfs3/frecord.c:1915 stack backtrace: CPU: 0 PID: 4796 Comm: syz.3.175 Not tainted 5.15.185-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 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 __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