====================================================== 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: __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