------------[ cut here ]------------
UBSAN: array-index-out-of-bounds in kernel/bpf/verifier.c:7182:12
index -1 is out of range for type 'u8[8]' (aka 'unsigned char[8]')
CPU: 1 PID: 6008 Comm: syz-executor.0 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
 ubsan_epilogue lib/ubsan.c:217 [inline]
 __ubsan_handle_out_of_bounds+0x121/0x150 lib/ubsan.c:415
 check_stack_range_initialized+0x1668/0x19a0 kernel/bpf/verifier.c:7182
 check_helper_mem_access+0x2eb/0xfa0 kernel/bpf/verifier.c:7286
 check_helper_call+0x263c/0x7220 kernel/bpf/verifier.c:10244
 do_check+0x9e49/0x10500 kernel/bpf/verifier.c:17793
 do_check_common+0x14bd/0x1dd0 kernel/bpf/verifier.c:20492
 do_check_main kernel/bpf/verifier.c:20583 [inline]
 bpf_check+0x136ab/0x19010 kernel/bpf/verifier.c:21253
 bpf_prog_load+0x1667/0x20f0 kernel/bpf/syscall.c:2895
 __sys_bpf+0x4ee/0x810 kernel/bpf/syscall.c:5631
 __do_sys_bpf kernel/bpf/syscall.c:5738 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5736 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5736
 do_syscall_64+0xfb/0x240
 entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7f992727dda9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 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 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f992805e0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f99273abf80 RCX: 00007f992727dda9
RDX: 0000000000000090 RSI: 00000000200000c0 RDI: 0000000000000005
RBP: 00007f99272ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f99273abf80 R15: 00007ffcfbe9bea8
 </TASK>
---[ end trace ]---