------------[ cut here ]------------
WARNING: CPU: 0 PID: 14761 at kernel/events/core.c:1655 perf_group_attach kernel/events/core.c:1655 [inline]
WARNING: CPU: 0 PID: 14761 at kernel/events/core.c:1655 add_event_to_ctx+0x8f3/0xc30 kernel/events/core.c:2229
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 14761 Comm: syz-executor.2 Not tainted 4.9.203-syzkaller #0
 ffff8801db607d48 ffffffff81b55f6b 0000000000000000 ffffffff82a3b700
 00000000ffffffff 0000000000000000 0000000000000009 ffff8801db607e28
 ffffffff813ff061 0000000041b58ab3 ffffffff82e31763 ffffffff813fee81
Call Trace:
 <IRQ> [ 1678.575481]  [<00000000e636c55b>] __dump_stack lib/dump_stack.c:15 [inline]
 <IRQ> [ 1678.575481]  [<00000000e636c55b>] dump_stack+0xcb/0x130 lib/dump_stack.c:56
 [<000000008da2afcd>] panic+0x1e0/0x3c4 kernel/panic.c:181
 [<000000001f53f457>] __warn.cold+0x2f/0x2f kernel/panic.c:547
 [<00000000815daed7>] warn_slowpath_null+0x2d/0x40 kernel/panic.c:590
 [<000000008b7243b6>] perf_group_attach kernel/events/core.c:1655 [inline]
 [<000000008b7243b6>] add_event_to_ctx+0x8f3/0xc30 kernel/events/core.c:2229
 [<00000000ac0a2b7e>] __perf_install_in_context+0x282/0x330 kernel/events/core.c:2320
 [<00000000ebafd4c7>] remote_function kernel/events/core.c:83 [inline]
 [<00000000ebafd4c7>] remote_function+0x11e/0x1a0 kernel/events/core.c:63
 [<00000000dae4d3e4>] flush_smp_call_function_queue+0xa7/0x360 kernel/smp.c:231
 [<00000000839e1ae5>] generic_smp_call_function_single_interrupt+0x13/0x30 kernel/smp.c:180
 [<00000000aa3af406>] __smp_call_function_interrupt arch/x86/kernel/smp.c:305 [inline]
 [<00000000aa3af406>] smp_call_function_interrupt+0x62/0x90 arch/x86/kernel/smp.c:312
 [<000000007526f7b3>] call_function_single_interrupt+0xa5/0xb0 arch/x86/entry/entry_64.S:674
 <EOI> [ 1678.694170]  [<0000000094013821>] ? arch_local_irq_enable arch/x86/include/asm/paravirt.h:778 [inline]
 <EOI> [ 1678.694170]  [<0000000094013821>] ? do_syscall_64+0x51/0x5c0 arch/x86/entry/common.c:276
 [<00000000723c2d74>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Kernel Offset: disabled
Rebooting in 86400 seconds..