1// SPDX-License-Identifier: GPL-2.0 2/* Converted from tools/testing/selftests/bpf/verifier/unpriv.c */ 3 4#include "vmlinux.h" 5#include <bpf/bpf_helpers.h> 6#include "bpf_misc.h" 7 8SEC("perf_event") 9__description("unpriv: spill/fill of different pointers ldx") 10__failure __msg("same insn cannot be used with different pointers") 11__naked void fill_of_different_pointers_ldx(void) 12{ 13 asm volatile (" \ 14 r6 = r10; \ 15 r6 += -8; \ 16 if r1 == 0 goto l0_%=; \ 17 r2 = r10; \ 18 r2 += %[__imm_0]; \ 19 *(u64*)(r6 + 0) = r2; \ 20l0_%=: if r1 != 0 goto l1_%=; \ 21 *(u64*)(r6 + 0) = r1; \ 22l1_%=: r1 = *(u64*)(r6 + 0); \ 23 r1 = *(u64*)(r1 + %[sample_period]); \ 24 r0 = 0; \ 25 exit; \ 26" : 27 : __imm_const(__imm_0, 28 -(__s32) offsetof(struct bpf_perf_event_data, sample_period) - 8), 29 __imm_const(sample_period, 30 offsetof(struct bpf_perf_event_data, sample_period)) 31 : __clobber_all); 32} 33 34char _license[] SEC("license") = "GPL"; 35