WARNING: CPU: 0 PID: 7268 at kernel/tracepoint.c:256 tracepoint_add_func kernel/tracepoint.c:256 [inline]
WARNING: CPU: 0 PID: 7268 at kernel/tracepoint.c:256 tracepoint_probe_register_prio+0x217/0x7a0 kernel/tracepoint.c:328
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 7268 Comm: syz-executor.2 Not tainted 4.19.51 #23
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
kobject: 'loop4' (0000000066652ad7): kobject_uevent_env
 panic+0x263/0x507 kernel/panic.c:185
kobject: 'loop4' (0000000066652ad7): fill_kobj_path: path = '/devices/virtual/block/loop4'
 __warn.cold+0x20/0x4a kernel/panic.c:540
 report_bug+0x263/0x2b0 lib/bug.c:186
overlayfs: filesystem on './file0' not supported as upperdir
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 fixup_bug arch/x86/kernel/traps.c:173 [inline]
 do_error_trap+0x204/0x360 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:1013
RIP: 0010:tracepoint_add_func kernel/tracepoint.c:256 [inline]
RIP: 0010:tracepoint_probe_register_prio+0x217/0x7a0 kernel/tracepoint.c:328
Code: 48 89 f8 48 c1 e8 03 80 3c 08 00 0f 85 c9 04 00 00 48 8b 45 b8 49 3b 45 08 0f 85 21 ff ff ff 41 bd ef ff ff ff e8 a9 b6 fe ff <0f> 0b e8 a2 b6 fe ff 48 c7 c7 a0 56 7d 88 e8 e6 0a 82 05 44 89 e8
RSP: 0018:ffff88805745fa88 EFLAGS: 00010212
RAX: 0000000000040000 RBX: ffffffff89365ba0 RCX: ffffc9000a2b1000
RDX: 0000000000001321 RSI: ffffffff816c5047 RDI: ffff8880a82cf2b0
RBP: ffff88805745fae0 R08: ffff88808a84c200 R09: fffffbfff10faad5
R10: ffff88805745fa78 R11: ffffffff887d56a7 R12: ffff8880a82cf290
R13: 00000000ffffffef R14: 00000000ffffffff R15: ffffffff8148b430
 tracepoint_probe_register+0x2b/0x40 kernel/tracepoint.c:348
 trace_event_reg+0x299/0x350 kernel/trace/trace_events.c:306
 perf_trace_event_reg kernel/trace/trace_event_perf.c:124 [inline]
 perf_trace_event_init+0x4f3/0x980 kernel/trace/trace_event_perf.c:199
 perf_trace_init+0x189/0x250 kernel/trace/trace_event_perf.c:223
 perf_tp_event_init+0xa6/0x120 kernel/events/core.c:8395
 perf_try_init_event+0x131/0x2f0 kernel/events/core.c:9792
 perf_init_event kernel/events/core.c:9830 [inline]
 perf_event_alloc.part.0+0xfcb/0x2e30 kernel/events/core.c:10097
 perf_event_alloc kernel/events/core.c:10453 [inline]
 __do_sys_perf_event_open+0x842/0x2730 kernel/events/core.c:10554
 __se_sys_perf_event_open kernel/events/core.c:10443 [inline]
 __x64_sys_perf_event_open+0xbe/0x150 kernel/events/core.c:10443
 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4592c9
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:00007fafa93fac78 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00000000004592c9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000002025c000
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 00007fafa93fb6d4
R13: 00000000004c5f2a R14: 00000000004da8c8 R15: 00000000ffffffff
Kernel Offset: disabled
Rebooting in 86400 seconds..