------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(class_idx > MAX_LOCKDEP_KEYS)
WARNING: CPU: 0 PID: 13557 at kernel/locking/lockdep.c:3764 __lock_acquire+0x17b5/0x5490 kernel/locking/lockdep.c:3764
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 13557 Comm: syz-executor.2 Not tainted 5.1.0+ #9
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 panic+0x2cb/0x65c kernel/panic.c:214
 __warn.cold+0x20/0x45 kernel/panic.c:566
 report_bug+0x263/0x2b0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:180 [inline]
 fixup_bug arch/x86/kernel/traps.c:175 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:273
 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:292
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:972
RIP: 0010:__lock_acquire+0x17b5/0x5490 kernel/locking/lockdep.c:3764
Code: d2 0f 85 c7 2c 00 00 44 8b 3d 47 46 09 08 45 85 ff 0f 85 57 f3 ff ff 48 c7 c6 c0 53 6b 87 48 c7 c7 a0 2a 6b 87 e8 f9 f0 eb ff <0f> 0b e9 40 f3 ff ff 0f 0b e9 83 f1 ff ff 8b 0d e7 52 ee 08 85 c9
RSP: 0018:ffff88809954f920 EFLAGS: 00010086
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff815afbe6 RDI: ffffed10132a9f16
RBP: ffff88809954fac8 R08: ffff8880987fe240 R09: fffffbfff1133055
R10: fffffbfff1133054 R11: ffffffff889982a3 R12: 00000000eada190a
R13: 0000000000000000 R14: 00000000000c190a R15: 0000000000000000
 lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:4302
 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline]
 _raw_spin_lock_irq+0x60/0x80 kernel/locking/spinlock.c:167
 spin_lock_irq include/linux/spinlock.h:363 [inline]
 flush_workqueue_prep_pwqs+0x1c5/0x590 kernel/workqueue.c:2728
 flush_workqueue+0x54b/0x14c0 kernel/workqueue.c:2799
 rxrpc_release_sock net/rxrpc/af_rxrpc.c:875 [inline]
 rxrpc_release+0x409/0x830 net/rxrpc/af_rxrpc.c:906
 __sock_release+0xd3/0x2b0 net/socket.c:607
 sock_close+0x1b/0x30 net/socket.c:1279
 __fput+0x302/0x890 fs/file_table.c:279
 ____fput+0x16/0x20 fs/file_table.c:312
 task_work_run+0x14a/0x1c0 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_usermode_loop+0x273/0x2c0 arch/x86/entry/common.c:168
 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:279 [inline]
 do_syscall_64+0x594/0x680 arch/x86/entry/common.c:304
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x412b61
Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 e4 1a 00 00 c3 48 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01
RSP: 002b:00007ffea2bb78a0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000412b61
RDX: 0000001b2cc20000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 0000000000000001 R08: 0000000064068001 R09: 0000000064068005
R10: 00007ffea2bb7980 R11: 0000000000000293 R12: 00000000007402d8
R13: 000000000033d675 R14: 000000000033d6a2 R15: 000000000073bf0c
Kernel Offset: disabled
Rebooting in 86400 seconds..