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 8 SEC("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; \ 20 l0_%=: if r1 != 0 goto l1_%=; \ 21 *(u64*)(r6 + 0) = r1; \ 22 l1_%=: 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 34 char _license[] SEC("license") = "GPL"; 35