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