====================================================== WARNING: possible circular locking dependency detected 6.10.0-rc7-syzkaller-gc912bf709078 #0 Not tainted ------------------------------------------------------ syz.2.241/8123 is trying to acquire lock: ffff0000e00a1988 (&mm->mmap_lock){++++}-{3:3}, at: __might_fault+0x9c/0x124 mm/memory.c:6233 but task is already holding lock: ffff0000eec68910 (&ni->file.run_lock){.+.+}-{3:3}, at: ni_fiemap+0x2c4/0xe10 fs/ntfs3/frecord.c:1961 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #4 (&ni->file.run_lock){.+.+}-{3:3}: down_read+0x58/0x2fc kernel/locking/rwsem.c:1526 ni_fiemap+0x2c4/0xe10 fs/ntfs3/frecord.c:1961 ntfs_fiemap+0x110/0x168 fs/ntfs3/file.c:1215 ioctl_fiemap fs/ioctl.c:220 [inline] do_vfs_ioctl+0x172c/0x2404 fs/ioctl.c:841 __do_sys_ioctl fs/ioctl.c:905 [inline] __se_sys_ioctl fs/ioctl.c:893 [inline] __arm64_sys_ioctl+0xe4/0x1c8 fs/ioctl.c:893 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:131 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:150 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 -> #3 (&ni->ni_lock/4){+.+.}-{3:3}: __mutex_lock_common+0x190/0x21a0 kernel/locking/mutex.c:608 __mutex_lock kernel/locking/mutex.c:752 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:804 ni_lock fs/ntfs3/ntfs_fs.h:1123 [inline] attr_data_get_block+0x34c/0x23ac fs/ntfs3/attrib.c:914 ntfs_get_block_vbo+0x340/0xc24 fs/ntfs3/inode.c:599 ntfs_get_block+0x84/0xc4 fs/ntfs3/inode.c:694 do_mpage_readpage+0x584/0x1750 fs/mpage.c:232 mpage_read_folio+0xec/0x1b4 fs/mpage.c:399 ntfs_read_folio+0x180/0x1c0 fs/ntfs3/inode.c:737 filemap_read_folio+0x14c/0x39c mm/filemap.c:2355 filemap_fault+0xb34/0x10a0 mm/filemap.c:3405 __do_fault+0x11c/0x374 mm/memory.c:4556 do_shared_fault mm/memory.c:4981 [inline] do_fault mm/memory.c:5055 [inline] do_pte_missing mm/memory.c:3897 [inline] handle_pte_fault+0x112c/0x5714 mm/memory.c:5381 __handle_mm_fault mm/memory.c:5524 [inline] handle_mm_fault+0xe84/0x15cc mm/memory.c:5689 do_page_fault+0x38c/0xb1c arch/arm64/mm/fault.c:578 do_translation_fault+0xc4/0x114 arch/arm64/mm/fault.c:690 do_mem_abort+0x74/0x200 arch/arm64/mm/fault.c:826 el0_da+0x60/0x178 arch/arm64/kernel/entry-common.c:580 el0t_64_sync_handler+0xcc/0xfc arch/arm64/kernel/entry-common.c:733 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 -> #2 (mapping.invalidate_lock#3){.+.+}-{3:3}: down_read+0x58/0x2fc kernel/locking/rwsem.c:1526 filemap_invalidate_lock_shared include/linux/fs.h:846 [inline] filemap_fault+0x528/0x10a0 mm/filemap.c:3301 __do_fault+0x11c/0x374 mm/memory.c:4556 do_shared_fault mm/memory.c:4981 [inline] do_fault mm/memory.c:5055 [inline] do_pte_missing mm/memory.c:3897 [inline] handle_pte_fault+0x112c/0x5714 mm/memory.c:5381 __handle_mm_fault mm/memory.c:5524 [inline] handle_mm_fault+0xe84/0x15cc mm/memory.c:5689 do_page_fault+0x38c/0xb1c arch/arm64/mm/fault.c:578 do_translation_fault+0xc4/0x114 arch/arm64/mm/fault.c:690 do_mem_abort+0x74/0x200 arch/arm64/mm/fault.c:826 el0_da+0x60/0x178 arch/arm64/kernel/entry-common.c:580 el0t_64_sync_handler+0xcc/0xfc arch/arm64/kernel/entry-common.c:733 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 -> #1 (&vma->vm_lock->lock){++++}-{3:3}: down_write+0x50/0xc0 kernel/locking/rwsem.c:1579 vma_start_write include/linux/mm.h:736 [inline] vma_link+0x238/0x484 mm/mmap.c:416 insert_vm_struct+0x284/0x378 mm/mmap.c:3413 __bprm_mm_init fs/exec.c:291 [inline] bprm_mm_init fs/exec.c:395 [inline] alloc_bprm+0x4e8/0x940 fs/exec.c:1599 kernel_execve+0xa4/0x7e8 fs/exec.c:2023 run_init_process+0x1bc/0x1ec init/main.c:1388 try_to_run_init_process init/main.c:1395 [inline] kernel_init+0xdc/0x2a0 init/main.c:1523 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860 -> #0 (&mm->mmap_lock){++++}-{3:3}: check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain kernel/locking/lockdep.c:3869 [inline] __lock_acquire+0x3384/0x763c kernel/locking/lockdep.c:5137 lock_acquire+0x240/0x728 kernel/locking/lockdep.c:5754 __might_fault+0xc4/0x124 mm/memory.c:6234 _copy_to_user include/linux/uaccess.h:165 [inline] copy_to_user include/linux/uaccess.h:191 [inline] fiemap_fill_next_extent+0x1b0/0x390 fs/ioctl.c:145 ni_fiemap+0x744/0xe10 fs/ntfs3/frecord.c:2044 ntfs_fiemap+0x110/0x168 fs/ntfs3/file.c:1215 ioctl_fiemap fs/ioctl.c:220 [inline] do_vfs_ioctl+0x172c/0x2404 fs/ioctl.c:841 __do_sys_ioctl fs/ioctl.c:905 [inline] __se_sys_ioctl fs/ioctl.c:893 [inline] __arm64_sys_ioctl+0xe4/0x1c8 fs/ioctl.c:893 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:131 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:150 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 other info that might help us debug this: Chain exists of: &mm->mmap_lock --> &ni->ni_lock/4 --> &ni->file.run_lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- rlock(&ni->file.run_lock); lock(&ni->ni_lock/4); lock(&ni->file.run_lock); rlock(&mm->mmap_lock); *** DEADLOCK *** 2 locks held by syz.2.241/8123: #0: ffff0000eec68860 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1123 [inline] #0: ffff0000eec68860 (&ni->ni_lock/4){+.+.}-{3:3}, at: ntfs_fiemap+0xec/0x168 fs/ntfs3/file.c:1213 #1: ffff0000eec68910 (&ni->file.run_lock){.+.+}-{3:3}, at: ni_fiemap+0x2c4/0xe10 fs/ntfs3/frecord.c:1961 stack backtrace: CPU: 1 PID: 8123 Comm: syz.2.241 Not tainted 6.10.0-rc7-syzkaller-gc912bf709078 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 Call trace: dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:317 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:324 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:114 dump_stack+0x1c/0x28 lib/dump_stack.c:123 print_circular_bug+0x150/0x1b8 kernel/locking/lockdep.c:2060 check_noncircular+0x310/0x404 kernel/locking/lockdep.c:2187 check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain kernel/locking/lockdep.c:3869 [inline] __lock_acquire+0x3384/0x763c kernel/locking/lockdep.c:5137 lock_acquire+0x240/0x728 kernel/locking/lockdep.c:5754 __might_fault+0xc4/0x124 mm/memory.c:6234 _copy_to_user include/linux/uaccess.h:165 [inline] copy_to_user include/linux/uaccess.h:191 [inline] fiemap_fill_next_extent+0x1b0/0x390 fs/ioctl.c:145 ni_fiemap+0x744/0xe10 fs/ntfs3/frecord.c:2044 ntfs_fiemap+0x110/0x168 fs/ntfs3/file.c:1215 ioctl_fiemap fs/ioctl.c:220 [inline] do_vfs_ioctl+0x172c/0x2404 fs/ioctl.c:841 __do_sys_ioctl fs/ioctl.c:905 [inline] __se_sys_ioctl fs/ioctl.c:893 [inline] __arm64_sys_ioctl+0xe4/0x1c8 fs/ioctl.c:893 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:131 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:150 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598