====================================================== WARNING: possible circular locking dependency detected 6.16.0-rc4-syzkaller-00319-g05df91921da6 #0 Not tainted ------------------------------------------------------ syz.5.132/7203 is trying to acquire lock: ffff888058a08100 (&ni->ni_lock#3/5){+.+.}-{4:4}, at: ni_lock fs/ntfs3/ntfs_fs.h:1100 [inline] ffff888058a08100 (&ni->ni_lock#3/5){+.+.}-{4:4}, at: ntfs_read_folio+0xba/0x200 fs/ntfs3/inode.c:726 but task is already holding lock: ffff888058a08538 (mapping.invalidate_lock#9){.+.+}-{4:4}, at: filemap_invalidate_lock_shared include/linux/fs.h:934 [inline] ffff888058a08538 (mapping.invalidate_lock#9){.+.+}-{4:4}, at: filemap_create_folio mm/filemap.c:2538 [inline] ffff888058a08538 (mapping.invalidate_lock#9){.+.+}-{4:4}, at: filemap_get_pages+0xc29/0x1ea0 mm/filemap.c:2608 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (mapping.invalidate_lock#9){.+.+}-{4:4}: lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5871 down_read+0x46/0x2e0 kernel/locking/rwsem.c:1524 filemap_invalidate_lock_shared include/linux/fs.h:934 [inline] filemap_fault+0x546/0x1200 mm/filemap.c:3400 __do_fault+0x138/0x390 mm/memory.c:5169 do_read_fault mm/memory.c:5590 [inline] do_fault mm/memory.c:5724 [inline] do_pte_missing mm/memory.c:4251 [inline] handle_pte_fault mm/memory.c:6069 [inline] __handle_mm_fault+0x37ed/0x5620 mm/memory.c:6212 handle_mm_fault+0x2d5/0x7f0 mm/memory.c:6381 do_user_addr_fault+0x764/0x1390 arch/x86/mm/fault.c:1387 handle_page_fault arch/x86/mm/fault.c:1476 [inline] exc_page_fault+0x76/0xf0 arch/x86/mm/fault.c:1532 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 rep_movs_alternative+0x30/0x90 arch/x86/lib/copy_user_64.S:53 copy_user_generic arch/x86/include/asm/uaccess_64.h:126 [inline] raw_copy_from_user arch/x86/include/asm/uaccess_64.h:141 [inline] _inline_copy_from_user include/linux/uaccess.h:178 [inline] _copy_from_user+0x7a/0xb0 lib/usercopy.c:18 copy_from_user include/linux/uaccess.h:212 [inline] ioctl_fiemap fs/ioctl.c:210 [inline] do_vfs_ioctl+0x960/0x1990 fs/ioctl.c:841 __do_sys_ioctl fs/ioctl.c:905 [inline] __se_sys_ioctl+0x82/0x170 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #1 (&mm->mmap_lock){++++}-{4:4}: lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5871 __might_fault+0xcc/0x130 mm/memory.c:6971 _inline_copy_to_user include/linux/uaccess.h:192 [inline] _copy_to_user+0x2c/0xb0 lib/usercopy.c:26 copy_to_user include/linux/uaccess.h:225 [inline] fiemap_fill_next_extent+0x1c0/0x390 fs/ioctl.c:145 ni_fiemap+0x89c/0xbf0 fs/ntfs3/frecord.c:2007 ntfs_fiemap+0xda/0x130 fs/ntfs3/file.c:1290 ioctl_fiemap fs/ioctl.c:220 [inline] do_vfs_ioctl+0x16d0/0x1990 fs/ioctl.c:841 __do_sys_ioctl fs/ioctl.c:905 [inline] __se_sys_ioctl+0x82/0x170 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #0 (&ni->ni_lock#3/5){+.+.}-{4:4}: check_prev_add kernel/locking/lockdep.c:3168 [inline] check_prevs_add kernel/locking/lockdep.c:3287 [inline] validate_chain+0xb9b/0x2140 kernel/locking/lockdep.c:3911 __lock_acquire+0xab9/0xd20 kernel/locking/lockdep.c:5240 lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5871 __mutex_lock_common kernel/locking/mutex.c:602 [inline] __mutex_lock+0x182/0xe80 kernel/locking/mutex.c:747 ni_lock fs/ntfs3/ntfs_fs.h:1100 [inline] ntfs_read_folio+0xba/0x200 fs/ntfs3/inode.c:726 filemap_read_folio+0x114/0x380 mm/filemap.c:2412 filemap_create_folio mm/filemap.c:2547 [inline] filemap_get_pages+0xd4e/0x1ea0 mm/filemap.c:2608 filemap_splice_read+0x4fc/0xbc0 mm/filemap.c:2990 do_splice_read fs/splice.c:979 [inline] splice_direct_to_actor+0x4a9/0xcc0 fs/splice.c:1083 do_splice_direct_actor fs/splice.c:1201 [inline] do_splice_direct+0x181/0x270 fs/splice.c:1227 vfs_copy_file_range+0xabc/0x1310 fs/read_write.c:1627 __do_sys_copy_file_range fs/read_write.c:1677 [inline] __se_sys_copy_file_range+0x2fb/0x470 fs/read_write.c:1644 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f other info that might help us debug this: Chain exists of: &ni->ni_lock#3/5 --> &mm->mmap_lock --> mapping.invalidate_lock#9 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- rlock(mapping.invalidate_lock#9); lock(&mm->mmap_lock); lock(mapping.invalidate_lock#9); lock(&ni->ni_lock#3/5); *** DEADLOCK *** 1 lock held by syz.5.132/7203: #0: ffff888058a08538 (mapping.invalidate_lock#9){.+.+}-{4:4}, at: filemap_invalidate_lock_shared include/linux/fs.h:934 [inline] #0: ffff888058a08538 (mapping.invalidate_lock#9){.+.+}-{4:4}, at: filemap_create_folio mm/filemap.c:2538 [inline] #0: ffff888058a08538 (mapping.invalidate_lock#9){.+.+}-{4:4}, at: filemap_get_pages+0xc29/0x1ea0 mm/filemap.c:2608 stack backtrace: CPU: 1 UID: 0 PID: 7203 Comm: syz.5.132 Not tainted 6.16.0-rc4-syzkaller-00319-g05df91921da6 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 print_circular_bug+0x2ee/0x310 kernel/locking/lockdep.c:2046 check_noncircular+0x134/0x160 kernel/locking/lockdep.c:2178 check_prev_add kernel/locking/lockdep.c:3168 [inline] check_prevs_add kernel/locking/lockdep.c:3287 [inline] validate_chain+0xb9b/0x2140 kernel/locking/lockdep.c:3911 __lock_acquire+0xab9/0xd20 kernel/locking/lockdep.c:5240 lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5871 __mutex_lock_common kernel/locking/mutex.c:602 [inline] __mutex_lock+0x182/0xe80 kernel/locking/mutex.c:747 ni_lock fs/ntfs3/ntfs_fs.h:1100 [inline] ntfs_read_folio+0xba/0x200 fs/ntfs3/inode.c:726 filemap_read_folio+0x114/0x380 mm/filemap.c:2412 filemap_create_folio mm/filemap.c:2547 [inline] filemap_get_pages+0xd4e/0x1ea0 mm/filemap.c:2608 filemap_splice_read+0x4fc/0xbc0 mm/filemap.c:2990 do_splice_read fs/splice.c:979 [inline] splice_direct_to_actor+0x4a9/0xcc0 fs/splice.c:1083 do_splice_direct_actor fs/splice.c:1201 [inline] do_splice_direct+0x181/0x270 fs/splice.c:1227 vfs_copy_file_range+0xabc/0x1310 fs/read_write.c:1627 __do_sys_copy_file_range fs/read_write.c:1677 [inline] __se_sys_copy_file_range+0x2fb/0x470 fs/read_write.c:1644 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f548cb8e929 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f548d94e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000146 RAX: ffffffffffffffda RBX: 00007f548cdb5fa0 RCX: 00007f548cb8e929 RDX: 0000000000000004 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 00007f548cc10b39 R08: ffffffffa003e459 R09: 0700000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f548cdb5fa0 R15: 00007ffc3b1aec68