Can not set IPV6_FL_F_REFLECT if flowlabel_consistency sysctl is enable
WARNING: CPU: 0 PID: 16791 at kernel/events/core.c:1833 perf_group_attach+0x4c1/0x5a0 kernel/events/core.c:1833
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 16791 Comm: syz-executor5 Not tainted 4.18.0-rc7+ #171
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113
 panic+0x238/0x4e7 kernel/panic.c:184
 __warn.cold.8+0x163/0x1ba kernel/panic.c:536
 report_bug+0x252/0x2d0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 do_error_trap+0x1fc/0x4d0 arch/x86/kernel/traps.c:296
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:316
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:992
RIP: 0010:perf_group_attach+0x4c1/0x5a0 kernel/events/core.c:1833
Code: 8d 7c 24 10 48 89 f8 48 c1 e8 03 42 80 3c 30 00 75 51 4d 8b 64 24 10 49 83 ec 10 4c 39 e3 75 d2 e9 f8 fe ff ff e8 cf 85 e9 ff <0f> 0b e9 e0 fc ff ff e8 c3 62 27 00 e9 ea fb ff ff e8 b9 62 27 00 
RSP: 0018:ffff8801db007bb0 EFLAGS: 00010006
RAX: ffff880198602000 RBX: ffff8801d0942a80 RCX: ffffffff81928e36
RDX: 0000000000010000 RSI: ffffffff819291d1 RDI: ffff8801abb13798
RBP: ffff8801db007c48 R08: ffff880198602000 R09: ffff88021fff801b
R10: ffffed0043fff001 R11: 0000000000000000 R12: ffff8801abb13580
R13: 1ffff1003b600f78 R14: 0000000000000000 R15: ffffe8ffffc131c0
 add_event_to_ctx kernel/events/core.c:2390 [inline]
 __perf_install_in_context+0x593/0xb30 kernel/events/core.c:2531
 remote_function+0x12c/0x1a0 kernel/events/core.c:87
 flush_smp_call_function_queue+0x1a2/0x5d0 kernel/smp.c:243
 generic_smp_call_function_single_interrupt+0x13/0x2b kernel/smp.c:192
 smp_call_function_single_interrupt+0x112/0x660 arch/x86/kernel/smp.c:295
 call_function_single_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:885
 </IRQ>
RIP: 0010:lock_release+0xb5/0xa30 kernel/locking/lockdep.c:3936
Code: f2 f2 f2 c7 40 14 00 f2 f2 f2 65 48 8b 04 25 28 00 00 00 48 89 45 d0 31 c0 48 89 f8 48 c1 e8 03 0f b6 14 10 48 89 f8 83 e0 07 <83> c0 03 38 d0 7c 08 84 d2 0f 85 04 07 00 00 45 8b 87 34 08 00 00 
RSP: 0018:ffff8801934bfbb0 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff04
RAX: 0000000000000004 RBX: 1ffff10032697f7b RCX: ffffffff81cc756e
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff880198602834
RBP: ffff8801934bfce0 R08: ffff880198602000 R09: ffffed003918ca90
R10: ffffed003918ca90 R11: ffff8801c8c65483 R12: ffff8801934bfcb8
R13: ffff8801c8c65498 R14: ffff8801934bfdc8 R15: ffff880198602000
 __raw_spin_unlock include/linux/spinlock_api_smp.h:150 [inline]
 _raw_spin_unlock+0x1a/0x30 kernel/locking/spinlock.c:176
 spin_unlock include/linux/spinlock.h:350 [inline]
 __close_fd+0x23a/0x3a0 fs/file.c:634
 __do_sys_close fs/open.c:1197 [inline]
 __se_sys_close fs/open.c:1195 [inline]
 __x64_sys_close+0x72/0xf0 fs/open.c:1195
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4105c1
Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 34 19 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:00007fff67bb14f0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 00000000004105c1
RDX: 0000000000000000 RSI: 00000000007319d0 RDI: 0000000000000005
RBP: 0000000000000010 R08: ffffffffffffffff R09: ffffffffffffffff
R10: 00007fff67bb1420 R11: 0000000000000293 R12: 0000000000000000
R13: 000000000003d3d2 R14: 000000000000011e R15: badc0ffeebadface
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..