------------[ cut here ]------------
WARNING: CPU: 1 PID: 29539 at kernel/events/core.c:2045 perf_group_attach+0x396/0x450 kernel/events/core.c:2045
Modules linked in:
CPU: 1 PID: 29539 Comm: syz-executor.4 Not tainted 5.10.109 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
RIP: 0010:perf_group_attach+0x396/0x450 kernel/events/core.c:2045
Code: 48 c1 e8 03 42 80 3c 20 00 75 5f 48 8b 5b 10 48 83 eb 10 48 39 dd 75 d4 5b 5d 41 5c 41 5d 41 5e e9 8f e5 f2 ff e8 8a e5 f2 ff <0f> 0b e9 b1 fd ff ff 48 c7 c7 bc 50 47 85 e8 67 3e 1e 00 e9 b9 fc
RSP: 0018:ffff88806cf09ef0 EFLAGS: 00010046
RAX: 0000000080010003 RBX: ffff8880511de000 RCX: ffffffff814cc6bf
RDX: ffff888050f04bc0 RSI: ffffffff814cc986 RDI: ffff8880511de218
RBP: ffff888009033000 R08: 0000000000000001 R09: 0000000000000003
R10: 0000000000000000 R11: 0000000000000001 R12: ffff88804f82e800
R13: 0000000000000000 R14: 0000000000000000 R15: ffff88806cf3f748
FS:  0000555556a0a400(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1a7777d718 CR3: 00000000549b6000 CR4: 0000000000350ee0
Call Trace:
 <IRQ>
 add_event_to_ctx kernel/events/core.c:2688 [inline]
 __perf_install_in_context+0x246/0x2d0 kernel/events/core.c:2839
 remote_function kernel/events/core.c:88 [inline]
 remote_function+0x11d/0x1a0 kernel/events/core.c:68
 flush_smp_call_function_queue+0x1b4/0x5d0 kernel/smp.c:395
 __sysvec_call_function_single+0x92/0x370 arch/x86/kernel/smp.c:248
 asm_call_irq_on_stack+0x12/0x20
 </IRQ>
 __run_sysvec_on_irqstack arch/x86/include/asm/irq_stack.h:37 [inline]
 run_sysvec_on_irqstack_cond arch/x86/include/asm/irq_stack.h:89 [inline]
 sysvec_call_function_single+0x7f/0xa0 arch/x86/kernel/smp.c:243
 asm_sysvec_call_function_single+0x12/0x20 arch/x86/include/asm/idtentry.h:643
RIP: 0010:csd_lock_wait kernel/smp.c:228 [inline]
RIP: 0010:smp_call_function_single+0x312/0x3e0 kernel/smp.c:516
Code: 10 8b 7c 24 1c 48 8d 74 24 40 48 89 44 24 50 48 8b 44 24 08 48 89 44 24 58 e8 fa f9 ff ff 41 89 c4 eb 07 e8 10 97 0a 00 f3 90 <8b> 5c 24 48 31 ff 83 e3 01 89 de e8 6e 90 0a 00 85 db 75 e5 e8 f5
RSP: 0018:ffff888053d47aa0 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff81351812
RDX: ffff888050f04bc0 RSI: ffffffff81351800 RDI: 0000000000000005
RBP: ffff888053d47b78 R08: 0000000000000001 R09: ffffffff8655571f
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000200 R14: 1ffff1100a7a8f58 R15: ffff888053d47c90
 task_function_call+0xd9/0x160 kernel/events/core.c:116
 event_function_call+0x206/0x420 kernel/events/core.c:284
 perf_remove_from_context+0x9b/0x1c0 kernel/events/core.c:2440
 perf_event_release_kernel+0x3ef/0xc20 kernel/events/core.c:5074
 perf_release+0x33/0x40 kernel/events/core.c:5170
 __fput+0x285/0x980 fs/file_table.c:281
 task_work_run+0xe2/0x1a0 kernel/task_work.c:151
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:164 [inline]
 exit_to_user_mode_prepare+0x155/0x160 kernel/entry/common.c:191
 syscall_exit_to_user_mode+0x38/0x230 kernel/entry/common.c:266
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f1a7a1db72b
Code: 0f 05 48 3d 00 f0 ff ff 77 45 c3 0f 1f 40 00 48 83 ec 18 89 7c 24 0c e8 63 fc ff ff 8b 7c 24 0c 41 89 c0 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 0c e8 a1 fc ff ff 8b 44
RSP: 002b:00007ffe40d20a80 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007f1a7a1db72b
RDX: 00007f1a7a343f90 RSI: 0000000000000080 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: 00007f1a7a343f98
R10: 00007ffe40d20b70 R11: 0000000000000293 R12: 0000000000206b77
R13: 00000000000003e8 R14: 00007f1a7a33bf60 R15: 0000000000206b54
irq event stamp: 2820
hardirqs last  enabled at (2819): [<ffffffff810ffbdd>] __send_ipi_mask+0x2fd/0x3c0 arch/x86/kernel/kvm.c:555
hardirqs last disabled at (2820): [<ffffffff83dd224b>] sysvec_call_function_single+0xb/0xa0 arch/x86/kernel/smp.c:243
softirqs last  enabled at (2672): [<ffffffff83e00f92>] asm_call_irq_on_stack+0x12/0x20
softirqs last disabled at (2479): [<ffffffff83e00f92>] asm_call_irq_on_stack+0x12/0x20
---[ end trace e35cc8b28b2cad44 ]---

======================================================
----------------
Code disassembly (best guess):
   0:	10 8b 7c 24 1c 48    	adc    %cl,0x481c247c(%rbx)
   6:	8d 74 24 40          	lea    0x40(%rsp),%esi
   a:	48 89 44 24 50       	mov    %rax,0x50(%rsp)
   f:	48 8b 44 24 08       	mov    0x8(%rsp),%rax
  14:	48 89 44 24 58       	mov    %rax,0x58(%rsp)
  19:	e8 fa f9 ff ff       	callq  0xfffffa18
  1e:	41 89 c4             	mov    %eax,%r12d
  21:	eb 07                	jmp    0x2a
  23:	e8 10 97 0a 00       	callq  0xa9738
  28:	f3 90                	pause
* 2a:	8b 5c 24 48          	mov    0x48(%rsp),%ebx <-- trapping instruction
  2e:	31 ff                	xor    %edi,%edi
  30:	83 e3 01             	and    $0x1,%ebx
  33:	89 de                	mov    %ebx,%esi
  35:	e8 6e 90 0a 00       	callq  0xa90a8
  3a:	85 db                	test   %ebx,%ebx
  3c:	75 e5                	jne    0x23
  3e:	e8                   	.byte 0xe8
  3f:	f5                   	cmc