------------[ cut here ]------------ verifier backtracking bug (stack slot out of bounds) WARNING: CPU: 1 PID: 23257 at kernel/bpf/verifier.c:4266 __mark_chain_precision+0x2a84/0x4d60 kernel/bpf/verifier.c:4266 Modules linked in: CPU: 1 PID: 23257 Comm: syz-executor.1 Not tainted 6.7.0-rc4-next-20231207-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 RIP: 0010:__mark_chain_precision+0x2a84/0x4d60 kernel/bpf/verifier.c:4266 Code: ff 89 de e8 5e df ec ff 84 db 0f 85 2c e1 ff ff e8 21 e4 ec ff c6 05 a0 4c 88 0d 01 90 48 c7 c7 60 4b d4 8a e8 6d d5 b2 ff 90 <0f> 0b 90 90 e9 09 e1 ff ff e8 fe e3 ec ff 48 8d 7b 04 48 b8 00 00 RSP: 0018:ffffc90016d072e8 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffc9000e052000 RDX: 0000000000040000 RSI: ffffffff814e05e6 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88803e21a000 R13: 0000000000000000 R14: 0000000000000001 R15: dffffc0000000000 FS: 00007f1b701086c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000008b9a5000 CR4: 00000000003526f0 Call Trace: mark_chain_precision kernel/bpf/verifier.c:4314 [inline] check_cond_jmp_op+0xea0/0x72b0 kernel/bpf/verifier.c:14724 do_check kernel/bpf/verifier.c:17516 [inline] do_check_common+0x8cbc/0xe8e0 kernel/bpf/verifier.c:19955 do_check_main kernel/bpf/verifier.c:20046 [inline] bpf_check+0x511a/0xa600 kernel/bpf/verifier.c:20682 bpf_prog_load+0xf3c/0x2540 kernel/bpf/syscall.c:2808 __sys_bpf+0x9ad/0x4af0 kernel/bpf/syscall.c:5513 __do_sys_bpf kernel/bpf/syscall.c:5620 [inline] __se_sys_bpf kernel/bpf/syscall.c:5618 [inline] __x64_sys_bpf+0x78/0xc0 kernel/bpf/syscall.c:5618 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x62/0x6a RIP: 0033:0x7f1b6f47cba9 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:00007f1b701080c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f1b6f59c1f0 RCX: 00007f1b6f47cba9 RDX: 0000000000000048 RSI: 0000000020000200 RDI: 0000000000000005 RBP: 00007f1b6f4c847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f1b6f59c1f0 R15: 00007ffef0ef2178