------------[ cut here ]------------
WARNING: CPU: 0 PID: 4471 at kernel/events/core.c:1690 perf_group_attach kernel/events/core.c:1690 [inline]
WARNING: CPU: 0 PID: 4471 at kernel/events/core.c:1690 add_event_to_ctx+0x84a/0xa70 kernel/events/core.c:2291
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 4471 Comm: syz-executor.4 Not tainted 4.14.142+ #0
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0xca/0x134 lib/dump_stack.c:53
 panic+0x1ea/0x3d3 kernel/panic.c:182
 __warn.cold+0x2f/0x3a kernel/panic.c:546
 report_bug+0x20a/0x248 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x1bf/0x2d0 arch/x86/kernel/traps.c:295
 invalid_op+0x18/0x40 arch/x86/entry/entry_64.S:963
RIP: 0010:perf_group_attach kernel/events/core.c:1690 [inline]
RIP: 0010:add_event_to_ctx+0x84a/0xa70 kernel/events/core.c:2291
RSP: 0000:ffff8881dba07bf0 EFLAGS: 00010006
RAX: ffff8881cd4ede00 RBX: ffff8881a8b7ee80 RCX: 1ffff1103535d111
RDX: 0000000000010100 RSI: 00000000ffffffff RDI: ffff8881a8b7f088
RBP: ffff8881c42caa80 R08: ffff88821fffd01c R09: ffff88821fffd008
R10: ffff88821fffd017 R11: ffff88821fffd010 R12: ffff8881dba31fc0
R13: ffff8881c42cab0c R14: ffff8881dba2e8f0 R15: ffff8881a9ae8880
 __perf_install_in_context+0x241/0x2f0 kernel/events/core.c:2438
 remote_function kernel/events/core.c:87 [inline]
 remote_function+0x110/0x190 kernel/events/core.c:67
 flush_smp_call_function_queue+0xae/0x320 kernel/smp.c:243
 smp_call_function_single_interrupt+0xc7/0x530 arch/x86/kernel/smp.c:296
 call_function_single_interrupt+0x8c/0xa0 arch/x86/entry/entry_64.S:814
RIP: 0010:__read_once_size include/linux/compiler.h:183 [inline]
RIP: 0010:compound_head include/linux/page-flags.h:148 [inline]
RIP: 0010:PageSwapBacked include/linux/page-flags.h:291 [inline]
RIP: 0010:PageSwapCache include/linux/page-flags.h:336 [inline]
RIP: 0010:free_swap_cache mm/swap_state.c:293 [inline]
RIP: 0010:free_page_and_swap_cache+0x29/0x240 mm/swap_state.c:305
RSP: 0000:ffff8881dba07dd0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff04
RAX: dffffc0000000000 RBX: 0000000000000014 RCX: 0000000000000000
RDX: 1ffffd4000d45014 RSI: ffff8881cd4ee630 RDI: ffffea0006a28080
RBP: ffffea0006a28080 R08: 1ffff110341fe800 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000013
R13: ffffed10348ed402 R14: ffffea0006a280a0 R15: ffff8881a476a010
 __tlb_remove_table arch/x86/include/asm/tlb.h:30 [inline]
 tlb_remove_table_rcu+0x78/0xc0 mm/memory.c:375
 __rcu_reclaim kernel/rcu/rcu.h:195 [inline]
 rcu_do_batch kernel/rcu/tree.c:2699 [inline]
 invoke_rcu_callbacks kernel/rcu/tree.c:2962 [inline]
 __rcu_process_callbacks kernel/rcu/tree.c:2929 [inline]
 rcu_process_callbacks+0x59f/0xf60 kernel/rcu/tree.c:2946
 __do_softirq+0x234/0x9ec kernel/softirq.c:288
 invoke_softirq kernel/softirq.c:368 [inline]
 irq_exit+0x114/0x150 kernel/softirq.c:409
 exiting_irq arch/x86/include/asm/apic.h:648 [inline]
 smp_apic_timer_interrupt+0x1a7/0x650 arch/x86/kernel/apic/apic.c:1102
 apic_timer_interrupt+0x8c/0xa0 arch/x86/entry/entry_64.S:792
 </IRQ>
RIP: 0033:0x41387a
RSP: 002b:00007ffc8100ad58 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: 0000000000000000 RBX: 000000000028e5fb RCX: 000000000041387a
RDX: 0000000040000001 RSI: 00007ffc8100ad90 RDI: ffffffffffffffff
RBP: 000000000000180c R08: 0000000000000001 R09: 00000000011dc940
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003
R13: 00007ffc8100ad90 R14: 000000000028e5c6 R15: 00007ffc8100ada0
Kernel Offset: 0x7400000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
Rebooting in 86400 seconds..