------------[ cut here ]------------
lockdep bfs error:-1
WARNING: CPU: 0 PID: 11506 at kernel/locking/lockdep.c:1714 print_bfs_bug+0x130/0x1e0 kernel/locking/lockdep.c:1714
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 11506 Comm: kworker/0:10 Not tainted 5.7.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events delayed_fput
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x188/0x20d lib/dump_stack.c:118
 panic+0x2e3/0x75c kernel/panic.c:221
 __warn.cold+0x2f/0x35 kernel/panic.c:582
 report_bug+0x27b/0x2f0 lib/bug.c:195
 fixup_bug arch/x86/kernel/traps.c:105 [inline]
 fixup_bug arch/x86/kernel/traps.c:100 [inline]
 do_error_trap+0x12b/0x220 arch/x86/kernel/traps.c:197
 do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:216
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027
RIP: 0010:print_bfs_bug+0x130/0x1e0 kernel/locking/lockdep.c:1714
Code: 3b 08 00 74 2c 48 c7 c7 80 0f 68 8c e8 f9 88 01 00 66 90 85 db 75 05 5b 5d 41 5c c3 89 ee 48 c7 c7 60 9e 2b 88 e8 a8 c9 eb ff <0f> 0b 5b 5d 41 5c c3 0f 0b e8 92 5f 82 06 85 c0 74 d7 48 c7 c0 d0
RSP: 0018:ffffc9000332f830 EFLAGS: 00010082
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff815d5ba7 RDI: fffff52000665ef8
RBP: 00000000ffffffff R08: ffff888033e1e540 R09: ffffed1015cc45f2
R10: ffff8880ae622f8b R11: ffffed1015cc45f1 R12: ffff888033e1e540
R13: ffff888033e1ee38 R14: ffffc9000332f8b0 R15: 000000000000011c
 check_path+0x36/0x40 kernel/locking/lockdep.c:1790
 check_noncircular+0x16d/0x3e0 kernel/locking/lockdep.c:1815
 check_prev_add kernel/locking/lockdep.c:2496 [inline]
 check_prevs_add kernel/locking/lockdep.c:2601 [inline]
 validate_chain kernel/locking/lockdep.c:3218 [inline]
 __lock_acquire+0x2a9a/0x48a0 kernel/locking/lockdep.c:4380
 lock_acquire+0x1f2/0x8f0 kernel/locking/lockdep.c:4959
 down_write+0x8d/0x150 kernel/locking/rwsem.c:1531
 inode_lock include/linux/fs.h:799 [inline]
 __sock_release+0x86/0x280 net/socket.c:604
 sock_close+0x18/0x20 net/socket.c:1278
 __fput+0x33e/0x880 fs/file_table.c:281
 delayed_fput+0x56/0x70 fs/file_table.c:309
 process_one_work+0x965/0x16a0 kernel/workqueue.c:2268
 worker_thread+0x96/0xe20 kernel/workqueue.c:2414
 kthread+0x388/0x470 kernel/kthread.c:268
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:351
Kernel Offset: disabled
Rebooting in 86400 seconds..