BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 1 PID: 1635 Comm: syz-executor.4 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
 __raw_read_unlock include/linux/rwlock_api_smp.h:227 [inline]
 _raw_read_unlock+0x36/0x40 kernel/locking/spinlock.c:255
 syscall_unregfunc+0x183/0x1e0 kernel/tracepoint.c:589
 tracepoint_remove_func kernel/tracepoint.c:282 [inline]
 tracepoint_probe_unregister+0x4c5/0x6b0 kernel/tracepoint.c:355
 trace_event_reg+0x181/0x350 kernel/trace/trace_events.c:308
 perf_trace_event_unreg.isra.0+0xaa/0x200 kernel/trace/trace_event_perf.c:162
 perf_trace_destroy+0xb5/0xf0 kernel/trace/trace_event_perf.c:243
 _free_event+0x2ee/0x11e0 kernel/events/core.c:4795
 put_event kernel/events/core.c:4889 [inline]
 perf_event_release_kernel+0xa24/0xe00 kernel/events/core.c:5004
 perf_release+0x33/0x40 kernel/events/core.c:5014
 __fput+0x33c/0x880 fs/file_table.c:281
 task_work_run+0xdd/0x190 kernel/task_work.c:135
 exit_task_work include/linux/task_work.h:25 [inline]
 do_exit+0xb72/0x2a40 kernel/exit.c:805
 do_group_exit+0x125/0x310 kernel/exit.c:903
 get_signal+0x40b/0x1ee0 kernel/signal.c:2743
 do_signal+0x82/0x2520 arch/x86/kernel/signal.c:810
 exit_to_usermode_loop arch/x86/entry/common.c:235 [inline]
 __prepare_exit_to_usermode+0x156/0x1f0 arch/x86/entry/common.c:269
 __do_fast_syscall_32 arch/x86/entry/common.c:475 [inline]
 do_fast_syscall_32+0x7f/0x120 arch/x86/entry/common.c:503
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
RIP: 0023:0xf7f47569
Code: Bad RIP value.
RSP: 002b:00000000f5d4212c EFLAGS: 00000246 ORIG_RAX: 00000000000000f0
RAX: 0000000000000001 RBX: 000000000819af6c RCX: 0000000000000081
RDX: 00000000000f4240 RSI: 000000000819af60 RDI: 000000000819af6c
RBP: 00000000f5d42228 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000