====================================================== WARNING: possible circular locking dependency detected 6.3.0-rc6-syzkaller-00168-g95abc817ab3a #0 Not tainted ------------------------------------------------------ syz-executor.3/22576 is trying to acquire lock: ffff8880342c34a0 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1124 [inline] ffff8880342c34a0 (&ni->ni_lock/4){+.+.}-{3:3}, at: ntfs_fallocate+0xa03/0x1190 fs/ntfs3/file.c:568 but task is already holding lock: ffff8880342c38e0 (mapping.invalidate_lock#13){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:803 [inline] ffff8880342c38e0 (mapping.invalidate_lock#13){++++}-{3:3}, at: ntfs_fallocate+0x3c8/0x1190 fs/ntfs3/file.c:488 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (mapping.invalidate_lock#13){++++}-{3:3}: lock_acquire+0x1e1/0x520 kernel/locking/lockdep.c:5669 down_read+0x3d/0x50 kernel/locking/rwsem.c:1520 filemap_invalidate_lock_shared include/linux/fs.h:813 [inline] filemap_fault+0x644/0x1800 mm/filemap.c:3274 __do_fault+0x136/0x500 mm/memory.c:4155 do_read_fault mm/memory.c:4506 [inline] do_fault mm/memory.c:4635 [inline] handle_pte_fault mm/memory.c:4923 [inline] __handle_mm_fault mm/memory.c:5065 [inline] handle_mm_fault+0x3357/0x51c0 mm/memory.c:5211 faultin_page mm/gup.c:925 [inline] __get_user_pages+0x512/0x1180 mm/gup.c:1147 populate_vma_page_range+0x2c7/0x3b0 mm/gup.c:1543 __mm_populate+0x279/0x450 mm/gup.c:1652 mm_populate include/linux/mm.h:3026 [inline] vm_mmap_pgoff+0x22f/0x2e0 mm/util.c:547 ksys_mmap_pgoff+0x4f9/0x6d0 mm/mmap.c:1410 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 (&mm->mmap_lock){++++}-{3:3}: lock_acquire+0x1e1/0x520 kernel/locking/lockdep.c:5669 __might_fault+0xba/0x120 mm/memory.c:5639 _copy_to_user+0x2a/0x130 lib/usercopy.c:36 copy_to_user include/linux/uaccess.h:169 [inline] fiemap_fill_next_extent+0x235/0x410 fs/ioctl.c:144 ni_fiemap+0x100b/0x1230 fs/ntfs3/frecord.c:1944 ntfs_fiemap+0x132/0x180 fs/ntfs3/file.c:1150 ioctl_fiemap fs/ioctl.c:219 [inline] do_vfs_ioctl+0x19ba/0x2b10 fs/ioctl.c:810 __do_sys_ioctl fs/ioctl.c:868 [inline] __se_sys_ioctl+0x81/0x160 fs/ioctl.c:856 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 -> #0 (&ni->ni_lock/4){+.+.}-{3:3}: check_prev_add kernel/locking/lockdep.c:3098 [inline] check_prevs_add kernel/locking/lockdep.c:3217 [inline] validate_chain+0x166b/0x58e0 kernel/locking/lockdep.c:3832 __lock_acquire+0x125b/0x1f80 kernel/locking/lockdep.c:5056 lock_acquire+0x1e1/0x520 kernel/locking/lockdep.c:5669 __mutex_lock_common+0x1d8/0x2530 kernel/locking/mutex.c:603 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x1b/0x20 kernel/locking/mutex.c:799 ni_lock fs/ntfs3/ntfs_fs.h:1124 [inline] ntfs_fallocate+0xa03/0x1190 fs/ntfs3/file.c:568 vfs_fallocate+0x54b/0x6b0 fs/open.c:324 ksys_fallocate fs/open.c:347 [inline] __do_sys_fallocate fs/open.c:355 [inline] __se_sys_fallocate fs/open.c:353 [inline] __x64_sys_fallocate+0xbd/0x100 fs/open.c:353 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 other info that might help us debug this: Chain exists of: &ni->ni_lock/4 --> &mm->mmap_lock --> mapping.invalidate_lock#13 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(mapping.invalidate_lock#13); lock(&mm->mmap_lock); lock(mapping.invalidate_lock#13); lock(&ni->ni_lock/4); *** DEADLOCK *** 3 locks held by syz-executor.3/22576: #0: ffff88802c0f8460 (sb_writers#17){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2505 [inline] #0: ffff88802c0f8460 (sb_writers#17){.+.+}-{0:0}, at: vfs_fallocate+0x4be/0x6b0 fs/open.c:323 #1: ffff8880342c3740 (&sb->s_type->i_mutex_key#27){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] #1: ffff8880342c3740 (&sb->s_type->i_mutex_key#27){+.+.}-{3:3}, at: ntfs_fallocate+0x2fb/0x1190 fs/ntfs3/file.c:474 #2: ffff8880342c38e0 (mapping.invalidate_lock#13){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:803 [inline] #2: ffff8880342c38e0 (mapping.invalidate_lock#13){++++}-{3:3}, at: ntfs_fallocate+0x3c8/0x1190 fs/ntfs3/file.c:488 stack backtrace: CPU: 0 PID: 22576 Comm: syz-executor.3 Not tainted 6.3.0-rc6-syzkaller-00168-g95abc817ab3a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 check_noncircular+0x2fe/0x3b0 kernel/locking/lockdep.c:2178 check_prev_add kernel/locking/lockdep.c:3098 [inline] check_prevs_add kernel/locking/lockdep.c:3217 [inline] validate_chain+0x166b/0x58e0 kernel/locking/lockdep.c:3832 __lock_acquire+0x125b/0x1f80 kernel/locking/lockdep.c:5056 lock_acquire+0x1e1/0x520 kernel/locking/lockdep.c:5669 __mutex_lock_common+0x1d8/0x2530 kernel/locking/mutex.c:603 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x1b/0x20 kernel/locking/mutex.c:799 ni_lock fs/ntfs3/ntfs_fs.h:1124 [inline] ntfs_fallocate+0xa03/0x1190 fs/ntfs3/file.c:568 vfs_fallocate+0x54b/0x6b0 fs/open.c:324 ksys_fallocate fs/open.c:347 [inline] __do_sys_fallocate fs/open.c:355 [inline] __se_sys_fallocate fs/open.c:353 [inline] __x64_sys_fallocate+0xbd/0x100 fs/open.c:353 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 RIP: 0033:0x7f361188c169 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f3612616168 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007f36119abf80 RCX: 00007f361188c169 RDX: 0000000000000000 RSI: 0000000000000020 RDI: 0000000000000005 RBP: 00007f36118e7ca1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000010000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd084e4bcf R14: 00007f3612616300 R15: 0000000000022000 ntfs3: loop3: ino=18, "bus" attr_insert_range