------------[ cut here ]------------ verifier bug: expected array map for tail call(1) WARNING: CPU: 1 PID: 6420 at kernel/bpf/verifier.c:11084 record_func_key+0x2d6/0x490 kernel/bpf/verifier.c:11084 Modules linked in: CPU: 1 UID: 0 PID: 6420 Comm: syz.1.171 Not tainted 6.16.0-rc3-syzkaller-gcce3fee729ee #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:record_func_key+0x2d6/0x490 kernel/bpf/verifier.c:11084 Code: 09 cc e8 cd 64 e3 ff 80 3d 78 15 ae 0d 01 74 ba e8 bf 64 e3 ff c6 05 6a 15 ae 0d 01 90 48 c7 c7 e0 e3 91 8b e8 bb 07 a7 ff 90 <0f> 0b 90 90 eb 9f e8 9f 64 e3 ff eb 05 e8 98 64 e3 ff 48 8b 5c 24 RSP: 0018:ffffc90019666c70 EFLAGS: 00010246 RAX: 2803a63a63b09300 RBX: dffffc0000000000 RCX: 0000000000080000 RDX: ffffc90004e02000 RSI: 000000000000866a RDI: 000000000000866b RBP: 0000000000000019 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffffbfff1bfaa04 R12: ffff88807ebc2800 R13: ffff888056d4b000 R14: ffff8880789d8000 R15: 1ffff1100f13b006 FS: 00007f8dd97f66c0(0000) GS:ffff888125d4d000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffdfa50000 CR3: 0000000075d94000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: check_helper_call+0x2fb8/0x6b60 kernel/bpf/verifier.c:11395 do_check_insn kernel/bpf/verifier.c:19850 [inline] do_check+0x95ec/0xe080 kernel/bpf/verifier.c:20017 do_check_common+0x188f/0x23f0 kernel/bpf/verifier.c:23180 do_check_main kernel/bpf/verifier.c:23263 [inline] bpf_check+0x10252/0x1a5d0 kernel/bpf/verifier.c:24619 bpf_prog_load+0x1318/0x1930 kernel/bpf/syscall.c:2972 __sys_bpf+0x5f1/0x860 kernel/bpf/syscall.c:5978 __do_sys_bpf kernel/bpf/syscall.c:6085 [inline] __se_sys_bpf kernel/bpf/syscall.c:6083 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:6083 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f8ddb98e929 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f8dd97f6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f8ddbbb5fa0 RCX: 00007f8ddb98e929 RDX: 0000000000000094 RSI: 0000200000000400 RDI: 0000000000000005 RBP: 00007f8ddba10b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f8ddbbb5fa0 R15: 00007ffeddcc7a68