====================================================== WARNING: possible circular locking dependency detected 6.9.0-rc7-syzkaller-00012-gdccb07f2914c #0 Not tainted ------------------------------------------------------ syz-executor.0/17661 is trying to acquire lock: ffff888050b5e840 (&ni->ni_lock#2/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1123 [inline] ffff888050b5e840 (&ni->ni_lock#2/4){+.+.}-{3:3}, at: ntfs_fallocate+0x7da/0x1120 fs/ntfs3/file.c:501 but task is already holding lock: ffff888050b5ec80 (mapping.invalidate_lock#5){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:840 [inline] ffff888050b5ec80 (mapping.invalidate_lock#5){++++}-{3:3}, at: ntfs_fallocate+0x6fb/0x1120 fs/ntfs3/file.c:486 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #4 (mapping.invalidate_lock#5){++++}-{3:3}: down_read+0x9a/0x330 kernel/locking/rwsem.c:1526 filemap_invalidate_lock_shared include/linux/fs.h:850 [inline] filemap_fault+0x275/0x38c0 mm/filemap.c:3277 __do_fault+0x10a/0x490 mm/memory.c:4531 do_read_fault mm/memory.c:4894 [inline] do_fault mm/memory.c:5024 [inline] do_pte_missing mm/memory.c:3880 [inline] handle_pte_fault mm/memory.c:5300 [inline] __handle_mm_fault+0x371d/0x4a80 mm/memory.c:5441 handle_mm_fault+0x476/0xa00 mm/memory.c:5606 do_user_addr_fault+0x426/0x1030 arch/x86/mm/fault.c:1331 handle_page_fault arch/x86/mm/fault.c:1474 [inline] exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1532 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 -> #3 (&vma->vm_lock->lock){++++}-{3:3}: down_write+0x3a/0x50 kernel/locking/rwsem.c:1579 vma_start_write include/linux/mm.h:730 [inline] vma_link+0x2c8/0x4c0 mm/mmap.c:416 insert_vm_struct+0x1e3/0x460 mm/mmap.c:3339 __bprm_mm_init fs/exec.c:282 [inline] bprm_mm_init fs/exec.c:384 [inline] alloc_bprm+0x58d/0xc50 fs/exec.c:1580 kernel_execve+0xb0/0x4e0 fs/exec.c:2004 try_to_run_init_process init/main.c:1373 [inline] kernel_init+0x145/0x2b0 init/main.c:1500 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 -> #2 (&mm->mmap_lock){++++}-{3:3}: __might_fault mm/memory.c:6220 [inline] __might_fault+0x11b/0x190 mm/memory.c:6213 _copy_to_user+0x2b/0xc0 lib/usercopy.c:36 copy_to_user include/linux/uaccess.h:191 [inline] fiemap_fill_next_extent+0x205/0x350 fs/ioctl.c:145 ni_fiemap+0x444/0xc10 fs/ntfs3/frecord.c:2065 ntfs_fiemap+0xc9/0x120 fs/ntfs3/file.c:1206 ioctl_fiemap fs/ioctl.c:220 [inline] do_vfs_ioctl+0x404/0x1a90 fs/ioctl.c:838 __do_compat_sys_ioctl+0x149/0x330 fs/ioctl.c:998 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x75/0x120 arch/x86/entry/common.c:386 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411 entry_SYSENTER_compat_after_hwframe+0x84/0x8e -> #1 (&ni->file.run_lock#3){++++}-{3:3}: down_write+0x3a/0x50 kernel/locking/rwsem.c:1579 ntfs_set_size+0x119/0x220 fs/ntfs3/inode.c:843 ntfs_extend+0x401/0x570 fs/ntfs3/file.c:335 ntfs_file_write_iter+0x433/0x2050 fs/ntfs3/file.c:1115 call_write_iter include/linux/fs.h:2110 [inline] new_sync_write fs/read_write.c:497 [inline] vfs_write+0x6db/0x1100 fs/read_write.c:590 ksys_write+0x12f/0x260 fs/read_write.c:643 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x75/0x120 arch/x86/entry/common.c:386 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411 entry_SYSENTER_compat_after_hwframe+0x84/0x8e -> #0 (&ni->ni_lock#2/4){+.+.}-{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+0x2478/0x3b30 kernel/locking/lockdep.c:5137 lock_acquire kernel/locking/lockdep.c:5754 [inline] lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5719 __mutex_lock_common kernel/locking/mutex.c:608 [inline] __mutex_lock+0x175/0x9c0 kernel/locking/mutex.c:752 ni_lock fs/ntfs3/ntfs_fs.h:1123 [inline] ntfs_fallocate+0x7da/0x1120 fs/ntfs3/file.c:501 vfs_fallocate+0x4b8/0xf70 fs/open.c:330 ioctl_preallocate+0x1a8/0x220 fs/ioctl.c:291 file_ioctl fs/ioctl.c:334 [inline] do_vfs_ioctl+0x16bd/0x1a90 fs/ioctl.c:883 __do_compat_sys_ioctl+0x149/0x330 fs/ioctl.c:998 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x75/0x120 arch/x86/entry/common.c:386 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411 entry_SYSENTER_compat_after_hwframe+0x84/0x8e other info that might help us debug this: Chain exists of: &ni->ni_lock#2/4 --> &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#2/4); *** DEADLOCK *** 3 locks held by syz-executor.0/17661: #0: ffff888048824420 (sb_writers#22){.+.+}-{0:0}, at: ioctl_preallocate+0x1a8/0x220 fs/ioctl.c:291 #1: ffff888050b5eae0 (&sb->s_type->i_mutex_key#27){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:795 [inline] #1: ffff888050b5eae0 (&sb->s_type->i_mutex_key#27){+.+.}-{3:3}, at: ntfs_fallocate+0x2ac/0x1120 fs/ntfs3/file.c:472 #2: ffff888050b5ec80 (mapping.invalidate_lock#5){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:840 [inline] #2: ffff888050b5ec80 (mapping.invalidate_lock#5){++++}-{3:3}, at: ntfs_fallocate+0x6fb/0x1120 fs/ntfs3/file.c:486 stack backtrace: CPU: 2 PID: 17661 Comm: syz-executor.0 Not tainted 6.9.0-rc7-syzkaller-00012-gdccb07f2914c #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114 check_noncircular+0x31a/0x400 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+0x2478/0x3b30 kernel/locking/lockdep.c:5137 lock_acquire kernel/locking/lockdep.c:5754 [inline] lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5719 __mutex_lock_common kernel/locking/mutex.c:608 [inline] __mutex_lock+0x175/0x9c0 kernel/locking/mutex.c:752 ni_lock fs/ntfs3/ntfs_fs.h:1123 [inline] ntfs_fallocate+0x7da/0x1120 fs/ntfs3/file.c:501 vfs_fallocate+0x4b8/0xf70 fs/open.c:330 ioctl_preallocate+0x1a8/0x220 fs/ioctl.c:291 file_ioctl fs/ioctl.c:334 [inline] do_vfs_ioctl+0x16bd/0x1a90 fs/ioctl.c:883 __do_compat_sys_ioctl+0x149/0x330 fs/ioctl.c:998 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x75/0x120 arch/x86/entry/common.c:386 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf7258579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f5e4a5ac EFLAGS: 00000292 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000040305829 RDX: 0000000020000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 10 06 adc %al,(%rsi) 2: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 6: 10 07 adc %al,(%rdi) 8: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi c: 10 08 adc %cl,(%rax) e: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1e: 00 51 52 add %dl,0x52(%rcx) 21: 55 push %rbp 22: 89 e5 mov %esp,%ebp 24: 0f 34 sysenter 26: cd 80 int $0x80 * 28: 5d pop %rbp <-- trapping instruction 29: 5a pop %rdx 2a: 59 pop %rcx 2b: c3 ret 2c: 90 nop 2d: 90 nop 2e: 90 nop 2f: 90 nop 30: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 37: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi