syzbot

======================================================
WARNING: possible circular locking dependency detected
6.7.0-rc7-syzkaller-00016-gf5837722ffec #0 Not tainted
------------------------------------------------------
udevd/4511 is trying to acquire lock:
ffff88820ade2120 (&wnd->rw_lock/1){+.+.}-{3:3}, at: ntfs_mark_rec_free+0x3f/0x2b0 fs/ntfs3/fsntfs.c:742

but task is already holding lock:
ffffffff8da12c80 (fs_reclaim){+.+.}-{0:0}, at: __perform_reclaim mm/page_alloc.c:3766 [inline]
ffffffff8da12c80 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_direct_reclaim mm/page_alloc.c:3791 [inline]
ffffffff8da12c80 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_slowpath+0xd01/0x23a0 mm/page_alloc.c:4196

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #2 (fs_reclaim){+.+.}-{0:0}:
       lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754
       __fs_reclaim_acquire mm/page_alloc.c:3693 [inline]
       fs_reclaim_acquire+0x87/0x120 mm/page_alloc.c:3707
       might_alloc include/linux/sched/mm.h:303 [inline]
       slab_pre_alloc_hook mm/slab.h:710 [inline]
       slab_alloc_node mm/slub.c:3460 [inline]
       __kmem_cache_alloc_node+0x3e/0x300 mm/slub.c:3517
       __do_kmalloc_node mm/slab_common.c:1006 [inline]
       __kmalloc_node+0xa2/0x190 mm/slab_common.c:1014
       kmalloc_node include/linux/slab.h:620 [inline]
       kvmalloc_node+0x72/0x180 mm/util.c:617
       kvmalloc include/linux/slab.h:738 [inline]
       run_add_entry+0x9ea/0xe70 fs/ntfs3/run.c:389
       attr_allocate_clusters+0x3ab/0x990 fs/ntfs3/attrib.c:181
       attr_set_size+0x2049/0x4290 fs/ntfs3/attrib.c:572
       ntfs_set_size+0x161/0x1f0 fs/ntfs3/inode.c:840
       ntfs_extend+0x16d/0x4a0 fs/ntfs3/file.c:333
       ntfs_file_write_iter+0x308/0x6e0 fs/ntfs3/file.c:1077
       call_write_iter include/linux/fs.h:2020 [inline]
       new_sync_write fs/read_write.c:491 [inline]
       vfs_write+0x792/0xb20 fs/read_write.c:584
       ksys_write+0x1a0/0x2c0 fs/read_write.c:637
       do_syscall_x64 arch/x86/entry/common.c:52 [inline]
       do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83
       entry_SYSCALL_64_after_hwframe+0x63/0x6b

-> #1 (&ni->file.run_lock#2){++++}-{3:3}:
       lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754
       down_read+0xb1/0xa40 kernel/locking/rwsem.c:1526
       mi_read+0x181/0x5a0 fs/ntfs3/record.c:129
       mi_format_new+0x1ab/0x5d0 fs/ntfs3/record.c:420
       ni_add_subrecord+0xe2/0x430 fs/ntfs3/frecord.c:372
       ntfs_look_free_mft+0x878/0x10c0 fs/ntfs3/fsntfs.c:715
       ni_create_attr_list+0x9bd/0x1480 fs/ntfs3/frecord.c:876
       ni_ins_attr_ext+0x365/0xbe0 fs/ntfs3/frecord.c:974
       ni_insert_attr fs/ntfs3/frecord.c:1141 [inline]
       ni_insert_resident fs/ntfs3/frecord.c:1525 [inline]
       ni_add_name+0x809/0xe90 fs/ntfs3/frecord.c:3047
       ntfs_link_inode+0x130/0x170 fs/ntfs3/inode.c:1730
       ntfs_link+0x116/0x250 fs/ntfs3/namei.c:156
       vfs_link+0x4ed/0x680 fs/namei.c:4588
       do_linkat+0x356/0x750 fs/namei.c:4659
       __do_sys_link fs/namei.c:4693 [inline]
       __se_sys_link fs/namei.c:4691 [inline]
       __x64_sys_link+0x86/0x90 fs/namei.c:4691
       do_syscall_x64 arch/x86/entry/common.c:52 [inline]
       do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83
       entry_SYSCALL_64_after_hwframe+0x63/0x6b

-> #0 (&wnd->rw_lock/1){+.+.}-{3:3}:
       check_prev_add kernel/locking/lockdep.c:3134 [inline]
       check_prevs_add kernel/locking/lockdep.c:3253 [inline]
       validate_chain+0x1909/0x5ab0 kernel/locking/lockdep.c:3869
       __lock_acquire+0x1345/0x1fd0 kernel/locking/lockdep.c:5137
       lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754
       down_write_nested+0x3d/0x50 kernel/locking/rwsem.c:1695
       ntfs_mark_rec_free+0x3f/0x2b0 fs/ntfs3/fsntfs.c:742
       ni_delete_all+0x8ad/0x980 fs/ntfs3/frecord.c:1637
       ni_clear+0x36e/0x3f0 fs/ntfs3/frecord.c:106
       evict+0x2a4/0x630 fs/inode.c:666
       __dentry_kill+0x436/0x660 fs/dcache.c:607
       shrink_dentry_list+0x3dd/0x700 fs/dcache.c:1201
       prune_dcache_sb+0x10f/0x170 fs/dcache.c:1282
       super_cache_scan+0x345/0x4a0 fs/super.c:228
       do_shrink_slab+0x6ed/0x1130 mm/shrinker.c:435
       shrink_slab_memcg mm/shrinker.c:548 [inline]
       shrink_slab+0x883/0x14c0 mm/shrinker.c:626
       shrink_node_memcgs mm/vmscan.c:5844 [inline]
       shrink_node+0x11d6/0x28c0 mm/vmscan.c:5877
       shrink_zones mm/vmscan.c:6116 [inline]
       do_try_to_free_pages+0x717/0x19e0 mm/vmscan.c:6178
       try_to_free_pages+0x9df/0x1000 mm/vmscan.c:6413
       __perform_reclaim mm/page_alloc.c:3769 [inline]
       __alloc_pages_direct_reclaim mm/page_alloc.c:3791 [inline]
       __alloc_pages_slowpath+0xdaa/0x23a0 mm/page_alloc.c:4196
       __alloc_pages+0x413/0x680 mm/page_alloc.c:4581
       alloc_pages_mpol+0x3de/0x640 mm/mempolicy.c:2133
       alloc_pages mm/mempolicy.c:2204 [inline]
       folio_alloc+0x12a/0x330 mm/mempolicy.c:2211
       filemap_alloc_folio+0xde/0x500 mm/filemap.c:974
       __filemap_get_folio+0x431/0xbb0 mm/filemap.c:1918
       filemap_fault+0xb10/0x1670 mm/filemap.c:3252
       __do_fault+0x133/0x4e0 mm/memory.c:4266
       do_read_fault mm/memory.c:4629 [inline]
       do_fault mm/memory.c:4763 [inline]
       do_pte_missing mm/memory.c:3731 [inline]
       handle_pte_fault mm/memory.c:5039 [inline]
       __handle_mm_fault mm/memory.c:5180 [inline]
       handle_mm_fault+0x4c9b/0x6680 mm/memory.c:5345
       do_user_addr_fault arch/x86/mm/fault.c:1364 [inline]
       handle_page_fault arch/x86/mm/fault.c:1505 [inline]
       exc_page_fault+0x456/0x870 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:
  &wnd->rw_lock/1 --> &ni->file.run_lock#2 --> fs_reclaim

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(fs_reclaim);
                               lock(&ni->file.run_lock#2);
                               lock(fs_reclaim);
  lock(&wnd->rw_lock/1);

 *** DEADLOCK ***

3 locks held by udevd/4511:
 #0: ffff88801e7b0fa0 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:857 [inline]
 #0: ffff88801e7b0fa0 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_fault+0xac7/0x1670 mm/filemap.c:3249
 #1: ffffffff8da12c80 (fs_reclaim){+.+.}-{0:0}, at: __perform_reclaim mm/page_alloc.c:3766 [inline]
 #1: ffffffff8da12c80 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_direct_reclaim mm/page_alloc.c:3791 [inline]
 #1: ffffffff8da12c80 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_slowpath+0xd01/0x23a0 mm/page_alloc.c:4196
 #2: ffff88820ade00e0 (&type->s_umount_key#62){++++}-{3:3}, at: super_trylock_shared fs/super.c:610 [inline]
 #2: ffff88820ade00e0 (&type->s_umount_key#62){++++}-{3:3}, at: super_cache_scan+0x94/0x4a0 fs/super.c:203

stack backtrace:
CPU: 0 PID: 4511 Comm: udevd Not tainted 6.7.0-rc7-syzkaller-00016-gf5837722ffec #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
 check_noncircular+0x366/0x490 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+0x1909/0x5ab0 kernel/locking/lockdep.c:3869
 __lock_acquire+0x1345/0x1fd0 kernel/locking/lockdep.c:5137
 lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754
 down_write_nested+0x3d/0x50 kernel/locking/rwsem.c:1695
 ntfs_mark_rec_free+0x3f/0x2b0 fs/ntfs3/fsntfs.c:742
 ni_delete_all+0x8ad/0x980 fs/ntfs3/frecord.c:1637
 ni_clear+0x36e/0x3f0 fs/ntfs3/frecord.c:106
 evict+0x2a4/0x630 fs/inode.c:666
 __dentry_kill+0x436/0x660 fs/dcache.c:607
 shrink_dentry_list+0x3dd/0x700 fs/dcache.c:1201
 prune_dcache_sb+0x10f/0x170 fs/dcache.c:1282
 super_cache_scan+0x345/0x4a0 fs/super.c:228
 do_shrink_slab+0x6ed/0x1130 mm/shrinker.c:435
 shrink_slab_memcg mm/shrinker.c:548 [inline]
 shrink_slab+0x883/0x14c0 mm/shrinker.c:626
 shrink_node_memcgs mm/vmscan.c:5844 [inline]
 shrink_node+0x11d6/0x28c0 mm/vmscan.c:5877
 shrink_zones mm/vmscan.c:6116 [inline]
 do_try_to_free_pages+0x717/0x19e0 mm/vmscan.c:6178
 try_to_free_pages+0x9df/0x1000 mm/vmscan.c:6413
 __perform_reclaim mm/page_alloc.c:3769 [inline]
 __alloc_pages_direct_reclaim mm/page_alloc.c:3791 [inline]
 __alloc_pages_slowpath+0xdaa/0x23a0 mm/page_alloc.c:4196
 __alloc_pages+0x413/0x680 mm/page_alloc.c:4581
 alloc_pages_mpol+0x3de/0x640 mm/mempolicy.c:2133
 alloc_pages mm/mempolicy.c:2204 [inline]
 folio_alloc+0x12a/0x330 mm/mempolicy.c:2211
 filemap_alloc_folio+0xde/0x500 mm/filemap.c:974
 __filemap_get_folio+0x431/0xbb0 mm/filemap.c:1918
 filemap_fault+0xb10/0x1670 mm/filemap.c:3252
 __do_fault+0x133/0x4e0 mm/memory.c:4266
 do_read_fault mm/memory.c:4629 [inline]
 do_fault mm/memory.c:4763 [inline]
 do_pte_missing mm/memory.c:3731 [inline]
 handle_pte_fault mm/memory.c:5039 [inline]
 __handle_mm_fault mm/memory.c:5180 [inline]
 handle_mm_fault+0x4c9b/0x6680 mm/memory.c:5345
 do_user_addr_fault arch/x86/mm/fault.c:1364 [inline]
 handle_page_fault arch/x86/mm/fault.c:1505 [inline]
 exc_page_fault+0x456/0x870 arch/x86/mm/fault.c:1561
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x55c9f70729ba
Code: Unable to access opcode bytes at 0x55c9f7072990.
RSP: 002b:00007fff3fde5b20 EFLAGS: 00010207
RAX: 0000000000000000 RBX: 000055c9f70926c8 RCX: 00007f60c29165f4
RDX: 00007fff3fde5b28 RSI: 000055c9f7082897 RDI: 00000000ffffff9c
RBP: 000055c9f901bfb8 R08: 0000000000000000 R09: 00007fff3fdeb0b0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 0005f9c4c6fe15c0 R15: 000055c9f7086dca
 </TASK>