------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(class_idx > MAX_LOCKDEP_KEYS) WARNING: CPU: 0 PID: 30558 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: 30558 Comm: syz-executor.0 Not tainted 5.1.0+ #5 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:179 [inline] fixup_bug arch/x86/kernel/traps.c:174 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:272 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:291 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 67 16 09 08 45 85 ff 0f 85 57 f3 ff ff 48 c7 c6 80 4d 6b 87 48 c7 c7 60 24 6b 87 e8 f9 f0 eb ff <0f> 0b e9 40 f3 ff ff 0f 0b e9 83 f1 ff ff 8b 0d e7 12 ee 08 85 c9 RSP: 0018:ffff88806be7f920 EFLAGS: 00010086 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff815afbe6 RDI: ffffed100d7cff16 RBP: ffff88806be7fac8 R08: ffff888099ab4580 R09: fffffbfff1132f75 R10: fffffbfff1132f74 R11: ffffffff88997ba3 R12: 000000002f3730ad R13: 0000000000000000 R14: 00000000000c10ad 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:167 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:276 [inline] do_syscall_64+0x57e/0x670 arch/x86/entry/common.c:301 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:00007ffed6900830 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000412b61 RDX: 0000001b31320000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 0000000000000001 R08: 00000000673b1060 R09: 00000000673b1064 R10: 00007ffed6900910 R11: 0000000000000293 R12: 0000000000740188 R13: 00000000001a54b9 R14: 00000000001a54e6 R15: 000000000073bf0c Kernel Offset: disabled Rebooting in 86400 seconds..