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Open Menu /tools/testing/selftests/bpf/verifier/perf_event_sample_period.c 
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{
	"check bpf_perf_event_data->sample_period byte load permitted",
	.insns = {
	BPF_MOV64_IMM(BPF_REG_0, 0),
#if __BYTE_ORDER == __LITTLE_ENDIAN
	BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1,
		    offsetof(struct bpf_perf_event_data, sample_period)),
#else
	BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1,
		    offsetof(struct bpf_perf_event_data, sample_period) + 7),
#endif
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.prog_type = BPF_PROG_TYPE_PERF_EVENT,
},
{
	"check bpf_perf_event_data->sample_period half load permitted",
	.insns = {
	BPF_MOV64_IMM(BPF_REG_0, 0),
#if __BYTE_ORDER == __LITTLE_ENDIAN
	BPF_LDX_MEM(BPF_H, BPF_REG_0, BPF_REG_1,
		    offsetof(struct bpf_perf_event_data, sample_period)),
#else
	BPF_LDX_MEM(BPF_H, BPF_REG_0, BPF_REG_1,
		    offsetof(struct bpf_perf_event_data, sample_period) + 6),
#endif
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.prog_type = BPF_PROG_TYPE_PERF_EVENT,
},
{
	"check bpf_perf_event_data->sample_period word load permitted",
	.insns = {
	BPF_MOV64_IMM(BPF_REG_0, 0),
#if __BYTE_ORDER == __LITTLE_ENDIAN
	BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
		    offsetof(struct bpf_perf_event_data, sample_period)),
#else
	BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
		    offsetof(struct bpf_perf_event_data, sample_period) + 4),
#endif
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.prog_type = BPF_PROG_TYPE_PERF_EVENT,
},
{
	"check bpf_perf_event_data->sample_period dword load permitted",
	.insns = {
	BPF_MOV64_IMM(BPF_REG_0, 0),
	BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1,
		    offsetof(struct bpf_perf_event_data, sample_period)),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.prog_type = BPF_PROG_TYPE_PERF_EVENT,
},