====================================================== WARNING: possible circular locking dependency detected 6.6.0-rc5-syzkaller-00338-gfbe1bf1e5ff1 #0 Not tainted ------------------------------------------------------ syz-executor.1/27206 is trying to acquire lock: ffff88803490ec80 (mapping.invalidate_lock#10){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:857 [inline] ffff88803490ec80 (mapping.invalidate_lock#10){++++}-{3:3}, at: page_cache_ra_unbounded+0xf1/0x7c0 mm/readahead.c:225 but task is already holding lock: ffff888076e7e0a0 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:165 [inline] ffff888076e7e0a0 (&mm->mmap_lock){++++}-{3:3}, at: get_mmap_lock_carefully mm/memory.c:5311 [inline] ffff888076e7e0a0 (&mm->mmap_lock){++++}-{3:3}, at: lock_mm_and_find_vma+0x32/0x2d0 mm/memory.c:5371 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (&mm->mmap_lock){++++}-{3:3}: __might_fault+0xc1/0x120 mm/memory.c:5896 _copy_to_user+0x2a/0xa0 lib/usercopy.c:36 copy_to_user include/linux/uaccess.h:191 [inline] fiemap_fill_next_extent+0x235/0x410 fs/ioctl.c:145 ni_fiemap+0xa5e/0x1230 fs/ntfs3/frecord.c:2065 ntfs_fiemap+0x132/0x180 fs/ntfs3/file.c:1163 ioctl_fiemap fs/ioctl.c:220 [inline] do_vfs_ioctl+0x19ea/0x2b40 fs/ioctl.c:811 __do_sys_ioctl fs/ioctl.c:869 [inline] __se_sys_ioctl+0x81/0x170 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> #1 (&ni->file.run_lock#3){++++}-{3:3}: down_read+0xb1/0xa40 kernel/locking/rwsem.c:1520 attr_data_get_block+0x2e7/0x2da0 fs/ntfs3/attrib.c:902 ntfs_get_block_vbo+0x36a/0xd00 fs/ntfs3/inode.c:587 do_mpage_readpage+0x90c/0x1f80 fs/mpage.c:234 mpage_read_folio+0x108/0x1d0 fs/mpage.c:400 filemap_read_folio+0x19c/0x770 mm/filemap.c:2382 filemap_fault+0xebe/0x1710 mm/filemap.c:3376 __do_fault+0x133/0x4e0 mm/memory.c:4204 do_shared_fault mm/memory.c:4635 [inline] do_fault mm/memory.c:4709 [inline] do_pte_missing mm/memory.c:3669 [inline] handle_pte_fault mm/memory.c:4978 [inline] __handle_mm_fault mm/memory.c:5119 [inline] handle_mm_fault+0x21d9/0x62b0 mm/memory.c:5284 do_user_addr_fault arch/x86/mm/fault.c:1413 [inline] handle_page_fault arch/x86/mm/fault.c:1505 [inline] exc_page_fault+0x2ac/0x860 arch/x86/mm/fault.c:1561 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 -> #0 (mapping.invalidate_lock#10){++++}-{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:3868 [inline] __lock_acquire+0x39ff/0x7f70 kernel/locking/lockdep.c:5136 lock_acquire+0x1e3/0x520 kernel/locking/lockdep.c:5753 down_read+0xb1/0xa40 kernel/locking/rwsem.c:1520 filemap_invalidate_lock_shared include/linux/fs.h:857 [inline] page_cache_ra_unbounded+0xf1/0x7c0 mm/readahead.c:225 do_sync_mmap_readahead+0x444/0x850 filemap_fault+0x7d3/0x1710 mm/filemap.c:3291 __do_fault+0x133/0x4e0 mm/memory.c:4204 do_shared_fault mm/memory.c:4635 [inline] do_fault mm/memory.c:4709 [inline] do_pte_missing mm/memory.c:3669 [inline] handle_pte_fault mm/memory.c:4978 [inline] __handle_mm_fault mm/memory.c:5119 [inline] handle_mm_fault+0x21d9/0x62b0 mm/memory.c:5284 do_user_addr_fault arch/x86/mm/fault.c:1413 [inline] handle_page_fault arch/x86/mm/fault.c:1505 [inline] exc_page_fault+0x2ac/0x860 arch/x86/mm/fault.c:1561 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#10 --> &ni->file.run_lock#3 --> &mm->mmap_lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- rlock(&mm->mmap_lock); lock(&ni->file.run_lock#3); lock(&mm->mmap_lock); rlock(mapping.invalidate_lock#10); *** DEADLOCK *** 1 lock held by syz-executor.1/27206: #0: ffff888076e7e0a0 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:165 [inline] #0: ffff888076e7e0a0 (&mm->mmap_lock){++++}-{3:3}, at: get_mmap_lock_carefully mm/memory.c:5311 [inline] #0: ffff888076e7e0a0 (&mm->mmap_lock){++++}-{3:3}, at: lock_mm_and_find_vma+0x32/0x2d0 mm/memory.c:5371 stack backtrace: CPU: 1 PID: 27206 Comm: syz-executor.1 Not tainted 6.6.0-rc5-syzkaller-00338-gfbe1bf1e5ff1 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 check_noncircular+0x375/0x4a0 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:3868 [inline] __lock_acquire+0x39ff/0x7f70 kernel/locking/lockdep.c:5136 lock_acquire+0x1e3/0x520 kernel/locking/lockdep.c:5753 down_read+0xb1/0xa40 kernel/locking/rwsem.c:1520 filemap_invalidate_lock_shared include/linux/fs.h:857 [inline] page_cache_ra_unbounded+0xf1/0x7c0 mm/readahead.c:225 do_sync_mmap_readahead+0x444/0x850 filemap_fault+0x7d3/0x1710 mm/filemap.c:3291 __do_fault+0x133/0x4e0 mm/memory.c:4204 do_shared_fault mm/memory.c:4635 [inline] do_fault mm/memory.c:4709 [inline] do_pte_missing mm/memory.c:3669 [inline] handle_pte_fault mm/memory.c:4978 [inline] __handle_mm_fault mm/memory.c:5119 [inline] handle_mm_fault+0x21d9/0x62b0 mm/memory.c:5284 do_user_addr_fault arch/x86/mm/fault.c:1413 [inline] handle_page_fault arch/x86/mm/fault.c:1505 [inline] exc_page_fault+0x2ac/0x860 arch/x86/mm/fault.c:1561 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 RIP: 0033:0x7f4e4c25db6b 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:00007ffd4ad66438 EFLAGS: 00010202 RAX: 0000000020000140 RBX: 00007ffd4ad66548 RCX: 0000000000737562 RDX: 0000000000000006 RSI: 0000000075622f2e RDI: 0000000020000140 RBP: 0000000000000032 R08: 00007f4e4c200000 R09: 00007ffd4ada80b0 R10: 00007ffd4ada8080 R11: 0000000000025d80 R12: 00007f4e4be20190 R13: fffffffffffffffe R14: 00007f4e4be00000 R15: 00007f4e4be20198