====================================================== WARNING: possible circular locking dependency detected 6.9.0-syzkaller-12220-g02c438bbfffe #0 Not tainted ------------------------------------------------------ kswapd0/111 is trying to acquire lock: ffff88802ee5e128 (&wnd->rw_lock/1){+.+.}-{3:3}, at: ntfs_mark_rec_free+0x2f4/0x400 fs/ntfs3/fsntfs.c:742 but task is already holding lock: ffffffff8dd3a860 (fs_reclaim){+.+.}-{0:0}, at: balance_pgdat+0x166/0x1970 mm/vmscan.c:6798 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (fs_reclaim){+.+.}-{0:0}: __fs_reclaim_acquire mm/page_alloc.c:3783 [inline] fs_reclaim_acquire+0x102/0x160 mm/page_alloc.c:3797 might_alloc include/linux/sched/mm.h:334 [inline] slab_pre_alloc_hook mm/slub.c:3890 [inline] slab_alloc_node mm/slub.c:3980 [inline] __do_kmalloc_node mm/slub.c:4120 [inline] __kmalloc_node_noprof+0xbb/0x450 mm/slub.c:4128 kmalloc_node_noprof include/linux/slab.h:681 [inline] kvmalloc_node_noprof+0x9d/0x1a0 mm/util.c:634 run_add_entry+0x7ba/0xb00 fs/ntfs3/run.c:389 attr_allocate_clusters+0x213/0x720 fs/ntfs3/attrib.c:181 attr_set_size+0x142e/0x2b90 fs/ntfs3/attrib.c:572 ntfs_set_size+0x13d/0x220 fs/ntfs3/inode.c:845 ntfs_extend+0x47f/0x570 fs/ntfs3/file.c:335 ntfs_file_write_iter+0x433/0x2050 fs/ntfs3/file.c:1115 do_iter_readv_writev+0x504/0x780 fs/read_write.c:741 vfs_writev+0x36f/0xde0 fs/read_write.c:971 do_pwritev+0x1b2/0x260 fs/read_write.c:1072 __do_compat_sys_pwritev2 fs/read_write.c:1218 [inline] __se_compat_sys_pwritev2 fs/read_write.c:1210 [inline] __ia32_compat_sys_pwritev2+0x121/0x1b0 fs/read_write.c:1210 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x73/0x120 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#2){++++}-{3:3}: down_read+0x9a/0x330 kernel/locking/rwsem.c:1526 mi_read+0x301/0x660 fs/ntfs3/record.c:129 mi_format_new+0x376/0x540 fs/ntfs3/record.c:420 ni_add_subrecord+0xd1/0x4f0 fs/ntfs3/frecord.c:372 ntfs_look_free_mft+0x209/0xdd0 fs/ntfs3/fsntfs.c:715 ni_create_attr_list+0x75b/0x1280 fs/ntfs3/frecord.c:876 ni_ins_attr_ext+0x236/0xae0 fs/ntfs3/frecord.c:974 ni_insert_attr+0x305/0x820 fs/ntfs3/frecord.c:1141 ni_insert_resident+0xd2/0x3a0 fs/ntfs3/frecord.c:1525 ni_add_name+0x48b/0x820 fs/ntfs3/frecord.c:3047 ni_rename+0xa1/0x1a0 fs/ntfs3/frecord.c:3087 ntfs_rename+0x96f/0xf20 fs/ntfs3/namei.c:334 vfs_rename+0xf84/0x20a0 fs/namei.c:4887 do_renameat2+0xc54/0xdc0 fs/namei.c:5044 __do_sys_rename fs/namei.c:5091 [inline] __se_sys_rename fs/namei.c:5089 [inline] __ia32_sys_rename+0x80/0xa0 fs/namei.c:5089 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x73/0x120 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 (&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 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 down_write_nested+0x3d/0x50 kernel/locking/rwsem.c:1695 ntfs_mark_rec_free+0x2f4/0x400 fs/ntfs3/fsntfs.c:742 ni_delete_all+0x6ad/0x880 fs/ntfs3/frecord.c:1637 ni_clear+0x519/0x6a0 fs/ntfs3/frecord.c:106 evict+0x2ed/0x6c0 fs/inode.c:667 iput_final fs/inode.c:1741 [inline] iput.part.0+0x5a8/0x7f0 fs/inode.c:1767 iput+0x5c/0x80 fs/inode.c:1757 dentry_unlink_inode+0x295/0x480 fs/dcache.c:400 __dentry_kill+0x1d0/0x600 fs/dcache.c:603 shrink_kill fs/dcache.c:1048 [inline] shrink_dentry_list+0x140/0x5d0 fs/dcache.c:1075 prune_dcache_sb+0xeb/0x150 fs/dcache.c:1156 super_cache_scan+0x32a/0x550 fs/super.c:221 do_shrink_slab+0x44f/0x11c0 mm/shrinker.c:435 shrink_slab_memcg mm/shrinker.c:548 [inline] shrink_slab+0xa87/0x1310 mm/shrinker.c:626 shrink_one+0x493/0x7c0 mm/vmscan.c:4790 shrink_many mm/vmscan.c:4851 [inline] lru_gen_shrink_node+0x89f/0x1750 mm/vmscan.c:4951 shrink_node mm/vmscan.c:5910 [inline] kswapd_shrink_node mm/vmscan.c:6720 [inline] balance_pgdat+0x1105/0x1970 mm/vmscan.c:6911 kswapd+0x5ea/0xbf0 mm/vmscan.c:7180 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 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 *** 2 locks held by kswapd0/111: #0: ffffffff8dd3a860 (fs_reclaim){+.+.}-{0:0}, at: balance_pgdat+0x166/0x1970 mm/vmscan.c:6798 #1: ffff8880217380e0 (&type->s_umount_key#57){++++}-{3:3}, at: super_trylock_shared fs/super.c:562 [inline] #1: ffff8880217380e0 (&type->s_umount_key#57){++++}-{3:3}, at: super_cache_scan+0x96/0x550 fs/super.c:196 stack backtrace: CPU: 2 PID: 111 Comm: kswapd0 Not tainted 6.9.0-syzkaller-12220-g02c438bbfffe #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 down_write_nested+0x3d/0x50 kernel/locking/rwsem.c:1695 ntfs_mark_rec_free+0x2f4/0x400 fs/ntfs3/fsntfs.c:742 ni_delete_all+0x6ad/0x880 fs/ntfs3/frecord.c:1637 ni_clear+0x519/0x6a0 fs/ntfs3/frecord.c:106 evict+0x2ed/0x6c0 fs/inode.c:667 iput_final fs/inode.c:1741 [inline] iput.part.0+0x5a8/0x7f0 fs/inode.c:1767 iput+0x5c/0x80 fs/inode.c:1757 dentry_unlink_inode+0x295/0x480 fs/dcache.c:400 __dentry_kill+0x1d0/0x600 fs/dcache.c:603 shrink_kill fs/dcache.c:1048 [inline] shrink_dentry_list+0x140/0x5d0 fs/dcache.c:1075 prune_dcache_sb+0xeb/0x150 fs/dcache.c:1156 super_cache_scan+0x32a/0x550 fs/super.c:221 do_shrink_slab+0x44f/0x11c0 mm/shrinker.c:435 shrink_slab_memcg mm/shrinker.c:548 [inline] shrink_slab+0xa87/0x1310 mm/shrinker.c:626 shrink_one+0x493/0x7c0 mm/vmscan.c:4790 shrink_many mm/vmscan.c:4851 [inline] lru_gen_shrink_node+0x89f/0x1750 mm/vmscan.c:4951 shrink_node mm/vmscan.c:5910 [inline] kswapd_shrink_node mm/vmscan.c:6720 [inline] balance_pgdat+0x1105/0x1970 mm/vmscan.c:6911 kswapd+0x5ea/0xbf0 mm/vmscan.c:7180 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244