====================================================== WARNING: possible circular locking dependency detected 6.0.0-rc7-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.0/1989 is trying to acquire lock: ffff8880709072f0 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:811 [inline] ffff8880709072f0 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: filemap_fault+0x4c5/0x1290 mm/filemap.c:3112 but task is already holding lock: ffff88807c059d28 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:136 [inline] ffff88807c059d28 (&mm->mmap_lock#2){++++}-{3:3}, at: do_user_addr_fault arch/x86/mm/fault.c:1338 [inline] ffff88807c059d28 (&mm->mmap_lock#2){++++}-{3:3}, at: handle_page_fault arch/x86/mm/fault.c:1488 [inline] ffff88807c059d28 (&mm->mmap_lock#2){++++}-{3:3}, at: exc_page_fault+0x18e/0x880 arch/x86/mm/fault.c:1544 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (&mm->mmap_lock#2){++++}-{3:3}: lock_acquire+0x21a/0x5b0 kernel/locking/lockdep.c:5666 __might_fault+0xa6/0x100 mm/memory.c:5577 _copy_to_user+0x25/0xc0 lib/usercopy.c:28 copy_to_user include/linux/uaccess.h:160 [inline] fiemap_fill_next_extent+0x216/0x400 fs/ioctl.c:144 ni_fiemap+0x8d8/0xfb0 fs/ntfs3/frecord.c:2061 ntfs_fiemap+0x121/0x170 fs/ntfs3/file.c:1150 ioctl_fiemap fs/ioctl.c:219 [inline] do_vfs_ioctl+0x757/0x24a0 fs/ioctl.c:810 __do_sys_ioctl fs/ioctl.c:868 [inline] __se_sys_ioctl+0x4c/0xf0 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x42/0x90 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x64/0xce -> #1 (&ni->file.run_lock#3){++++}-{3:3}: lock_acquire+0x21a/0x5b0 kernel/locking/lockdep.c:5666 down_read+0x3d/0x50 kernel/locking/rwsem.c:1499 attr_data_get_block+0x2d0/0x2440 fs/ntfs3/attrib.c:901 ntfs_get_block_vbo+0x2c7/0xb60 fs/ntfs3/inode.c:569 do_mpage_readpage+0x713/0x17f0 fs/mpage.c:208 mpage_read_folio+0x103/0x1c0 fs/mpage.c:379 filemap_read_folio+0x63/0x340 mm/filemap.c:2394 filemap_fault+0xc3f/0x1290 mm/filemap.c:3205 __do_fault+0x112/0x390 mm/memory.c:4173 do_shared_fault mm/memory.c:4573 [inline] do_fault mm/memory.c:4651 [inline] handle_pte_fault mm/memory.c:4911 [inline] __handle_mm_fault mm/memory.c:5053 [inline] handle_mm_fault+0x1e7d/0x3b70 mm/memory.c:5151 do_user_addr_fault arch/x86/mm/fault.c:1397 [inline] handle_page_fault arch/x86/mm/fault.c:1488 [inline] exc_page_fault+0x671/0x880 arch/x86/mm/fault.c:1544 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 -> #0 (mapping.invalidate_lock#3){.+.+}-{3:3}: check_prev_add kernel/locking/lockdep.c:3095 [inline] check_prevs_add kernel/locking/lockdep.c:3214 [inline] validate_chain+0x16bc/0x5930 kernel/locking/lockdep.c:3829 __lock_acquire+0x12c9/0x1f30 kernel/locking/lockdep.c:5053 lock_acquire+0x21a/0x5b0 kernel/locking/lockdep.c:5666 down_read+0x3d/0x50 kernel/locking/rwsem.c:1499 filemap_invalidate_lock_shared include/linux/fs.h:811 [inline] filemap_fault+0x4c5/0x1290 mm/filemap.c:3112 __do_fault+0x112/0x390 mm/memory.c:4173 do_shared_fault mm/memory.c:4573 [inline] do_fault mm/memory.c:4651 [inline] handle_pte_fault mm/memory.c:4911 [inline] __handle_mm_fault mm/memory.c:5053 [inline] handle_mm_fault+0x1e7d/0x3b70 mm/memory.c:5151 do_user_addr_fault arch/x86/mm/fault.c:1397 [inline] handle_page_fault arch/x86/mm/fault.c:1488 [inline] exc_page_fault+0x671/0x880 arch/x86/mm/fault.c:1544 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 other info that might help us debug this: Chain exists of: mapping.invalidate_lock#3 --> &ni->file.run_lock#3 --> &mm->mmap_lock#2 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&mm->mmap_lock#2); lock(&ni->file.run_lock#3); lock(&mm->mmap_lock#2); lock(mapping.invalidate_lock#3); *** DEADLOCK *** 1 lock held by syz-executor.0/1989: #0: ffff88807c059d28 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:136 [inline] #0: ffff88807c059d28 (&mm->mmap_lock#2){++++}-{3:3}, at: do_user_addr_fault arch/x86/mm/fault.c:1338 [inline] #0: ffff88807c059d28 (&mm->mmap_lock#2){++++}-{3:3}, at: handle_page_fault arch/x86/mm/fault.c:1488 [inline] #0: ffff88807c059d28 (&mm->mmap_lock#2){++++}-{3:3}, at: exc_page_fault+0x18e/0x880 arch/x86/mm/fault.c:1544 stack backtrace: CPU: 1 PID: 1989 Comm: syz-executor.0 Not tainted 6.0.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x167/0x217 lib/dump_stack.c:106 check_noncircular+0x2ef/0x3a0 kernel/locking/lockdep.c:2175 check_prev_add kernel/locking/lockdep.c:3095 [inline] check_prevs_add kernel/locking/lockdep.c:3214 [inline] validate_chain+0x16bc/0x5930 kernel/locking/lockdep.c:3829 __lock_acquire+0x12c9/0x1f30 kernel/locking/lockdep.c:5053 lock_acquire+0x21a/0x5b0 kernel/locking/lockdep.c:5666 down_read+0x3d/0x50 kernel/locking/rwsem.c:1499 filemap_invalidate_lock_shared include/linux/fs.h:811 [inline] filemap_fault+0x4c5/0x1290 mm/filemap.c:3112 __do_fault+0x112/0x390 mm/memory.c:4173 do_shared_fault mm/memory.c:4573 [inline] do_fault mm/memory.c:4651 [inline] handle_pte_fault mm/memory.c:4911 [inline] __handle_mm_fault mm/memory.c:5053 [inline] handle_mm_fault+0x1e7d/0x3b70 mm/memory.c:5151 do_user_addr_fault arch/x86/mm/fault.c:1397 [inline] handle_page_fault arch/x86/mm/fault.c:1488 [inline] exc_page_fault+0x671/0x880 arch/x86/mm/fault.c:1544 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 RIP: 0033:0x7f656705dd6b Code: fa 10 73 2d 83 fa 08 73 46 83 fa 04 73 16 83 fa 01 7c 10 8a 0e 74 0a 0f b7 74 16 fe 66 89 74 17 fe 88 0f c3 8b 4c 16 fc 8b 36 <89> 4c 17 fc 89 37 c3 c5 fa 6f 06 c5 fa 6f 4c 16 f0 c5 fa 7f 07 c5 RSP: 002b:00007ffc00315618 EFLAGS: 00010202 RAX: 000000002001f740 RBX: 00007ffc00315728 RCX: 0000000000337366 RDX: 0000000000000006 RSI: 000000007366746e RDI: 000000002001f740 RBP: 0000000000000032 R08: 00007f6567000000 R09: 00007f656719bf8c R10: 00007ffc00315750 R11: 0000000000000246 R12: 00007f6566c200f8 R13: fffffffffffffffe R14: 00007f6566c00000 R15: 00007f6566c20100