bisecting fixing commit since aec3002d07fd2564cd32e56f126fa6db14a168bb
building syzkaller on 907bf74686129436f81aa40336ee89f7cc01b0b4
testing commit aec3002d07fd2564cd32e56f126fa6db14a168bb with gcc (GCC) 8.1.0
kernel signature: 4c166c9c58ee73f5a9461c6faf377280877f0e3a1021bf4148fa40b13f116312
all runs: crashed: WARNING in perf_group_attach
testing current HEAD 2d16cf4817bc6944a2adb5bf4db607c8258e87da
testing commit 2d16cf4817bc6944a2adb5bf4db607c8258e87da with gcc (GCC) 8.1.0
kernel signature: 38ce1fa2c37110c11ba89be27e16ff658c7dd6f46b28120c79723bb964c3312c
all runs: crashed: WARNING in perf_group_attach
revisions tested: 2, total time: 24m15.152754901s (build: 17m22.186981637s, test: 6m25.801521266s)
the crash still happens on HEAD
commit msg: Linux 4.19.125
crash: WARNING in perf_group_attach
8021q: adding VLAN 0 to HW filter on device batadv0
IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready
8021q: adding VLAN 0 to HW filter on device batadv0
WARNING: CPU: 0 PID: 7908 at kernel/events/core.c:1834 perf_group_attach+0x3b1/0x470 kernel/events/core.c:1826
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 7908 Comm: syz-executor.3 Not tainted 4.19.125-syzkaller #0
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+0x123/0x177 lib/dump_stack.c:118
 panic+0x1cd/0x375 kernel/panic.c:186
 __warn.cold.8+0x1b/0x3e kernel/panic.c:541
 report_bug+0x1a4/0x200 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 do_error_trap+0x200/0x350 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:1038
RIP: 0010:perf_group_attach+0x3b1/0x470 kernel/events/core.c:1834
Code: ec 10 4c 39 e3 75 d7 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 4e 7b 1d 00 e9 c8 fc ff ff e8 44 7b 1d 00 e9 fe fc ff ff <0f> 0b e9 75 fd ff ff e8 53 7b 1d 00 eb c1 e8 4c 7b 1d 00 e9 6d fc
RSP: 0018:ffff8880aea07ec0 EFLAGS: 00010002
RAX: dffffc0000000000 RBX: ffff8880a12d6340 RCX: 1ffff1101425ad92
RDX: 1ffff1101425adbb RSI: ffff8880aea313e0 RDI: ffff8880a12d6dd8
RBP: ffff8880aea07ef0 R08: ffffed1015d4627a R09: ffffed1015d46279
R10: ffffed1015d46279 R11: ffff8880aea313cb R12: ffff8880a12d6bc0
R13: ffffe8ffffc141d0 R14: 0000000000000000 R15: ffff8880aea313c8
 add_event_to_ctx kernel/events/core.c:2392 [inline]
 __perf_install_in_context+0x3f6/0x860 kernel/events/core.c:2533
 remote_function+0xff/0x180 kernel/events/core.c:87
 flush_smp_call_function_queue+0x10e/0x3d0 kernel/smp.c:243
 generic_smp_call_function_single_interrupt+0xe/0x11 kernel/smp.c:192
 smp_call_function_single_interrupt+0xa0/0x440 arch/x86/kernel/smp.c:304
 call_function_single_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:916
 </IRQ>
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x56/0x80 kernel/locking/spinlock.c:192
Code: 12 88 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 32 48 83 3d 0b 68 91 01 00 74 1f fb 66 0f 1f 44 00 00 <bf> 01 00 00 00 e8 20 11 c2 fa 65 8b 05 29 4f 81 79 85 c0 74 05 5b
RSP: 0018:ffff888072dcfeb0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff04
RAX: dffffc0000000000 RBX: ffff88809c38b3c8 RCX: 0000000000000000
RDX: 1ffffffff10240d3 RSI: 0000000000000001 RDI: ffffffff88120698
RBP: ffff888072dcfeb8 R08: ffffed101387167a R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff88808be488e4 R14: 0000000000000000 R15: ffff88809c38b3c8
 spin_unlock_irq include/linux/spinlock.h:379 [inline]
 do_group_exit+0x26e/0x2f0 kernel/exit.c:980
 __do_sys_exit_group kernel/exit.c:994 [inline]
 __se_sys_exit_group kernel/exit.c:992 [inline]
 __x64_sys_exit_group+0x39/0x40 kernel/exit.c:992
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459519
Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fffa7ca6148 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 000000000000001e RCX: 0000000000459519
RDX: 0000000000413201 RSI: fffffffffffffff7 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffffffffffff R09: 00007fffa7ca61a0
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000001
R13: 00007fffa7ca61a0 R14: 0000000000000000 R15: 00007fffa7ca61b0
Kernel Offset: disabled
Rebooting in 86400 seconds..