IPVS: ftp: loaded support on port[0] = 21
BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 1 PID: 6514 Comm: syz-executor.5 Not tainted 5.8.0-rc5-syzkaller #0
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+0x18f/0x20d lib/dump_stack.c:118
 add_chain_cache kernel/locking/lockdep.c:3063 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3162 [inline]
 validate_chain kernel/locking/lockdep.c:3183 [inline]
 __lock_acquire.cold+0x11/0x3f8 kernel/locking/lockdep.c:4380
 lock_acquire+0x1f1/0xad0 kernel/locking/lockdep.c:4959
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x8c/0xc0 kernel/locking/spinlock.c:159
 debug_object_activate+0x12e/0x3e0 lib/debugobjects.c:636
 debug_hrtimer_activate kernel/time/hrtimer.c:416 [inline]
 debug_activate kernel/time/hrtimer.c:476 [inline]
 enqueue_hrtimer+0x27/0x3f0 kernel/time/hrtimer.c:965
 __hrtimer_start_range_ns kernel/time/hrtimer.c:1103 [inline]
 hrtimer_start_range_ns+0x569/0x830 kernel/time/hrtimer.c:1133
 perf_swevent_start_hrtimer kernel/events/core.c:10145 [inline]
 cpu_clock_event_start kernel/events/core.c:10215 [inline]
 cpu_clock_event_add+0xbd/0xe0 kernel/events/core.c:10227
 event_sched_in+0x448/0xe10 kernel/events/core.c:2516
 group_sched_in kernel/events/core.c:2552 [inline]
 merge_sched_in+0x863/0x12f0 kernel/events/core.c:3632
 visit_groups_merge.constprop.0.isra.0+0x521/0x1080 kernel/events/core.c:3605
 ctx_flexible_sched_in kernel/events/core.c:3672 [inline]
 ctx_sched_in+0x2da/0x780 kernel/events/core.c:3717
 perf_event_sched_in+0x69/0xa0 kernel/events/core.c:2661
 perf_event_context_sched_in kernel/events/core.c:3757 [inline]
 __perf_event_task_sched_in+0x6a1/0x990 kernel/events/core.c:3796
 perf_event_task_sched_in include/linux/perf_event.h:1199 [inline]
 finish_task_switch+0x437/0x750 kernel/sched/core.c:3290
 context_switch kernel/sched/core.c:3456 [inline]
 __schedule+0x8e9/0x1eb0 kernel/sched/core.c:4178
 preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:4334
 preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:40
 __mutex_lock_common kernel/locking/mutex.c:1095 [inline]
 __mutex_lock+0xccb/0x10d0 kernel/locking/mutex.c:1103
 ebt_register_table+0x5b6/0xd90 net/bridge/netfilter/ebtables.c:1197
 ops_init+0xaf/0x470 net/core/net_namespace.c:151
 setup_net+0x2d8/0x850 net/core/net_namespace.c:341
 copy_net_ns+0x2cf/0x5e0 net/core/net_namespace.c:482
 create_new_namespaces+0x3f6/0xb10 kernel/nsproxy.c:110
 copy_namespaces+0x385/0x470 kernel/nsproxy.c:179
 copy_process+0x2b0b/0x6d90 kernel/fork.c:2101
 _do_fork+0x12c/0xa70 kernel/fork.c:2443
 __do_sys_clone+0xef/0x150 kernel/fork.c:2599
 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:384
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45c1d9
Code: Bad RIP value.
RSP: 002b:00007f311b881c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000001f00 RCX: 000000000045c1d9
RDX: 9999999999999999 RSI: 0000000000000000 RDI: 00000000e1004d7c
RBP: 000000000078bf50 R08: ffffffffffffffff R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000078bf0c
R13: 00007ffe52eef25f R14: 00007f311b8829c0 R15: 000000000078bf0c