| // SPDX-License-Identifier: GPL-2.0 |
| |
| #include <linux/bpf.h> |
| #include <bpf/bpf_helpers.h> |
| #include "bpf_misc.h" |
| |
| struct { |
| __uint(type, BPF_MAP_TYPE_ARRAY); |
| __uint(max_entries, 1); |
| __type(key, __u32); |
| __type(value, __u32); |
| } map_array SEC(".maps"); |
| |
| SEC("socket") |
| __description("invalid map type for tail call") |
| __failure __msg("expected prog array map for tail call") |
| __failure_unpriv |
| __naked void invalid_map_for_tail_call(void) |
| { |
| asm volatile (" \ |
| r2 = %[map_array] ll; \ |
| r3 = 0; \ |
| call %[bpf_tail_call]; \ |
| exit; \ |
| " : |
| : __imm(bpf_tail_call), |
| __imm_addr(map_array) |
| : __clobber_all); |
| } |
| |
| char _license[] SEC("license") = "GPL"; |
