====================================================== WARNING: possible circular locking dependency detected 6.14.0-syzkaller-01103-g2df0c02dab82 #0 Not tainted ------------------------------------------------------ syz.3.174/7776 is trying to acquire lock: ffff88805c9f6f28 (&ni->ni_lock#3/5){+.+.}-{4:4}, at: ni_lock fs/ntfs3/ntfs_fs.h:1111 [inline] ffff88805c9f6f28 (&ni->ni_lock#3/5){+.+.}-{4:4}, at: ntfs_fallocate+0x97a/0x1310 fs/ntfs3/file.c:684 but task is already holding lock: ffff88805c9f7360 (mapping.invalidate_lock#5){++++}-{4:4}, at: filemap_invalidate_lock include/linux/fs.h:912 [inline] ffff88805c9f7360 (mapping.invalidate_lock#5){++++}-{4:4}, at: ntfs_fallocate+0x3e9/0x1310 fs/ntfs3/file.c:596 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (mapping.invalidate_lock#5){++++}-{4:4}: lock_acquire+0x116/0x2f0 kernel/locking/lockdep.c:5866 down_read+0xb3/0xae0 kernel/locking/rwsem.c:1524 filemap_invalidate_lock_shared include/linux/fs.h:922 [inline] filemap_fault+0x617/0x14a0 mm/filemap.c:3390 __do_fault+0x135/0x390 mm/memory.c:4989 do_read_fault mm/memory.c:5409 [inline] do_fault mm/memory.c:5543 [inline] do_pte_missing mm/memory.c:4059 [inline] handle_pte_fault mm/memory.c:5888 [inline] __handle_mm_fault+0x40c8/0x6ef0 mm/memory.c:6031 handle_mm_fault+0x2c1/0x7e0 mm/memory.c:6200 do_user_addr_fault arch/x86/mm/fault.c:1337 [inline] handle_page_fault arch/x86/mm/fault.c:1480 [inline] exc_page_fault+0x45b/0x8b0 arch/x86/mm/fault.c:1538 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 -> #2 (&vma->vm_lock->lock){++++}-{4:4}: lock_acquire+0x116/0x2f0 kernel/locking/lockdep.c:5866 down_write+0x9c/0x220 kernel/locking/rwsem.c:1577 vma_start_write include/linux/mm.h:770 [inline] vma_link+0x297/0x510 mm/vma.c:1696 insert_vm_struct+0x2fb/0x410 mm/mmap.c:1356 __bprm_mm_init fs/exec.c:281 [inline] bprm_mm_init fs/exec.c:385 [inline] alloc_bprm+0x7f9/0xbe0 fs/exec.c:1573 kernel_execve+0x99/0xa50 fs/exec.c:1989 try_to_run_init_process init/main.c:1385 [inline] kernel_init+0xed/0x2b0 init/main.c:1513 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 -> #1 (&mm->mmap_lock){++++}-{4:4}: lock_acquire+0x116/0x2f0 kernel/locking/lockdep.c:5866 __might_fault+0xc6/0x120 mm/memory.c:6838 _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+0x237/0x420 fs/ioctl.c:145 ni_fiemap+0x1009/0x12a0 fs/ntfs3/frecord.c:1953 ntfs_fiemap+0x134/0x180 fs/ntfs3/file.c:1360 ioctl_fiemap fs/ioctl.c:220 [inline] do_vfs_ioctl+0x1975/0x2750 fs/ioctl.c:840 __do_sys_ioctl fs/ioctl.c:904 [inline] __se_sys_ioctl+0x80/0x160 fs/ioctl.c:892 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 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:3166 [inline] check_prevs_add kernel/locking/lockdep.c:3285 [inline] validate_chain+0xa69/0x24e0 kernel/locking/lockdep.c:3909 __lock_acquire+0xad5/0xd80 kernel/locking/lockdep.c:5235 lock_acquire+0x116/0x2f0 kernel/locking/lockdep.c:5866 __mutex_lock_common kernel/locking/mutex.c:587 [inline] __mutex_lock+0x1bf/0x1000 kernel/locking/mutex.c:732 ni_lock fs/ntfs3/ntfs_fs.h:1111 [inline] ntfs_fallocate+0x97a/0x1310 fs/ntfs3/file.c:684 vfs_fallocate+0x627/0x7a0 fs/open.c:338 ksys_fallocate fs/open.c:362 [inline] __do_sys_fallocate fs/open.c:367 [inline] __se_sys_fallocate fs/open.c:365 [inline] __x64_sys_fallocate+0xbc/0x110 fs/open.c:365 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 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 --> &vma->vm_lock->lock --> mapping.invalidate_lock#5 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(mapping.invalidate_lock#5); lock(&vma->vm_lock->lock); lock(mapping.invalidate_lock#5); lock(&ni->ni_lock#3/5); *** DEADLOCK *** 3 locks held by syz.3.174/7776: #0: ffff88805327a420 (sb_writers#20){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:3033 [inline] #0: ffff88805327a420 (sb_writers#20){.+.+}-{0:0}, at: vfs_fallocate+0x5a1/0x7a0 fs/open.c:337 #1: ffff88805c9f71c0 (&sb->s_type->i_mutex_key#26){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline] #1: ffff88805c9f71c0 (&sb->s_type->i_mutex_key#26){+.+.}-{4:4}, at: ntfs_fallocate+0x303/0x1310 fs/ntfs3/file.c:582 #2: ffff88805c9f7360 (mapping.invalidate_lock#5){++++}-{4:4}, at: filemap_invalidate_lock include/linux/fs.h:912 [inline] #2: ffff88805c9f7360 (mapping.invalidate_lock#5){++++}-{4:4}, at: ntfs_fallocate+0x3e9/0x1310 fs/ntfs3/file.c:596 stack backtrace: CPU: 0 UID: 0 PID: 7776 Comm: syz.3.174 Not tainted 6.14.0-syzkaller-01103-g2df0c02dab82 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 print_circular_bug+0x2e1/0x300 kernel/locking/lockdep.c:2079 check_noncircular+0x142/0x160 kernel/locking/lockdep.c:2211 check_prev_add kernel/locking/lockdep.c:3166 [inline] check_prevs_add kernel/locking/lockdep.c:3285 [inline] validate_chain+0xa69/0x24e0 kernel/locking/lockdep.c:3909 __lock_acquire+0xad5/0xd80 kernel/locking/lockdep.c:5235 lock_acquire+0x116/0x2f0 kernel/locking/lockdep.c:5866 __mutex_lock_common kernel/locking/mutex.c:587 [inline] __mutex_lock+0x1bf/0x1000 kernel/locking/mutex.c:732 ni_lock fs/ntfs3/ntfs_fs.h:1111 [inline] ntfs_fallocate+0x97a/0x1310 fs/ntfs3/file.c:684 vfs_fallocate+0x627/0x7a0 fs/open.c:338 ksys_fallocate fs/open.c:362 [inline] __do_sys_fallocate fs/open.c:367 [inline] __se_sys_fallocate fs/open.c:365 [inline] __x64_sys_fallocate+0xbc/0x110 fs/open.c:365 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fbcc0f8d169 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:00007fbcbedf6038 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007fbcc11a6080 RCX: 00007fbcc0f8d169 RDX: 0000000000004000 RSI: 0000000000000020 RDI: 0000000000000004 RBP: 00007fbcc100e2a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000008000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007fbcc11a6080 R15: 00007ffe5812e948