selftests/bpf: verifier/cgroup_skb.c converted to inline assembly

Test verifier/cgroup_skb.c automatically converted to use inline assembly.

Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20230325025524.144043-14-eddyz87@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

3 files changed, 229 insertions, 197 deletions

diff --git a/tools/testing/selftests/bpf/prog_tests/verifier.c b/tools/testing/selftests/bpf/prog_tests/verifier.c
index b138c9894abbfd..53e41af908216a 100644
--- a/tools/testing/selftests/bpf/prog_tests/verifier.c
+++ b/tools/testing/selftests/bpf/prog_tests/verifier.c
@@ -10,6 +10,7 @@
 #include "verifier_bounds_mix_sign_unsign.skel.h"
 #include "verifier_cfg.skel.h"
 #include "verifier_cgroup_inv_retcode.skel.h"
+#include "verifier_cgroup_skb.skel.h"
 
 __maybe_unused
 static void run_tests_aux(const char *skel_name, skel_elf_bytes_fn elf_bytes_factory)
@@ -42,3 +43,4 @@ void test_verifier_bounds_deduction(void)     { RUN(verifier_bounds_deduction);
 void test_verifier_bounds_mix_sign_unsign(void) { RUN(verifier_bounds_mix_sign_unsign); }
 void test_verifier_cfg(void)                  { RUN(verifier_cfg); }
 void test_verifier_cgroup_inv_retcode(void)   { RUN(verifier_cgroup_inv_retcode); }
+void test_verifier_cgroup_skb(void)           { RUN(verifier_cgroup_skb); }
diff --git a/tools/testing/selftests/bpf/progs/verifier_cgroup_skb.c b/tools/testing/selftests/bpf/progs/verifier_cgroup_skb.c
new file mode 100644
index 00000000000000..5ee3d349d6d017
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/verifier_cgroup_skb.c
@@ -0,0 +1,227 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Converted from tools/testing/selftests/bpf/verifier/cgroup_skb.c */
+
+#include <linux/bpf.h>
+#include <bpf/bpf_helpers.h>
+#include "bpf_misc.h"
+
+SEC("cgroup/skb")
+__description("direct packet read test#1 for CGROUP_SKB")
+__success __failure_unpriv
+__msg_unpriv("invalid bpf_context access off=76 size=4")
+__retval(0)
+__naked void test_1_for_cgroup_skb(void)
+{
+	asm volatile ("					\
+	r2 = *(u32*)(r1 + %[__sk_buff_data]);		\
+	r3 = *(u32*)(r1 + %[__sk_buff_data_end]);	\
+	r4 = *(u32*)(r1 + %[__sk_buff_len]);		\
+	r5 = *(u32*)(r1 + %[__sk_buff_pkt_type]);	\
+	r6 = *(u32*)(r1 + %[__sk_buff_mark]);		\
+	*(u32*)(r1 + %[__sk_buff_mark]) = r6;		\
+	r7 = *(u32*)(r1 + %[__sk_buff_queue_mapping]);	\
+	r8 = *(u32*)(r1 + %[__sk_buff_protocol]);	\
+	r9 = *(u32*)(r1 + %[__sk_buff_vlan_present]);	\
+	r0 = r2;					\
+	r0 += 8;					\
+	if r0 > r3 goto l0_%=;				\
+	r0 = *(u8*)(r2 + 0);				\
+l0_%=:	r0 = 0;						\
+	exit;						\
+"	:
+	: __imm_const(__sk_buff_data, offsetof(struct __sk_buff, data)),
+	  __imm_const(__sk_buff_data_end, offsetof(struct __sk_buff, data_end)),
+	  __imm_const(__sk_buff_len, offsetof(struct __sk_buff, len)),
+	  __imm_const(__sk_buff_mark, offsetof(struct __sk_buff, mark)),
+	  __imm_const(__sk_buff_pkt_type, offsetof(struct __sk_buff, pkt_type)),
+	  __imm_const(__sk_buff_protocol, offsetof(struct __sk_buff, protocol)),
+	  __imm_const(__sk_buff_queue_mapping, offsetof(struct __sk_buff, queue_mapping)),
+	  __imm_const(__sk_buff_vlan_present, offsetof(struct __sk_buff, vlan_present))
+	: __clobber_all);
+}
+
+SEC("cgroup/skb")
+__description("direct packet read test#2 for CGROUP_SKB")
+__success __success_unpriv __retval(0)
+__naked void test_2_for_cgroup_skb(void)
+{
+	asm volatile ("					\
+	r4 = *(u32*)(r1 + %[__sk_buff_vlan_tci]);	\
+	r5 = *(u32*)(r1 + %[__sk_buff_vlan_proto]);	\
+	r6 = *(u32*)(r1 + %[__sk_buff_priority]);	\
+	*(u32*)(r1 + %[__sk_buff_priority]) = r6;	\
+	r7 = *(u32*)(r1 + %[__sk_buff_ingress_ifindex]);\
+	r8 = *(u32*)(r1 + %[__sk_buff_tc_index]);	\
+	r9 = *(u32*)(r1 + %[__sk_buff_hash]);		\
+	r0 = 0;						\
+	exit;						\
+"	:
+	: __imm_const(__sk_buff_hash, offsetof(struct __sk_buff, hash)),
+	  __imm_const(__sk_buff_ingress_ifindex, offsetof(struct __sk_buff, ingress_ifindex)),
+	  __imm_const(__sk_buff_priority, offsetof(struct __sk_buff, priority)),
+	  __imm_const(__sk_buff_tc_index, offsetof(struct __sk_buff, tc_index)),
+	  __imm_const(__sk_buff_vlan_proto, offsetof(struct __sk_buff, vlan_proto)),
+	  __imm_const(__sk_buff_vlan_tci, offsetof(struct __sk_buff, vlan_tci))
+	: __clobber_all);
+}
+
+SEC("cgroup/skb")
+__description("direct packet read test#3 for CGROUP_SKB")
+__success __success_unpriv __retval(0)
+__naked void test_3_for_cgroup_skb(void)
+{
+	asm volatile ("					\
+	r4 = *(u32*)(r1 + %[__sk_buff_cb_0]);		\
+	r5 = *(u32*)(r1 + %[__sk_buff_cb_1]);		\
+	r6 = *(u32*)(r1 + %[__sk_buff_cb_2]);		\
+	r7 = *(u32*)(r1 + %[__sk_buff_cb_3]);		\
+	r8 = *(u32*)(r1 + %[__sk_buff_cb_4]);		\
+	r9 = *(u32*)(r1 + %[__sk_buff_napi_id]);	\
+	*(u32*)(r1 + %[__sk_buff_cb_0]) = r4;		\
+	*(u32*)(r1 + %[__sk_buff_cb_1]) = r5;		\
+	*(u32*)(r1 + %[__sk_buff_cb_2]) = r6;		\
+	*(u32*)(r1 + %[__sk_buff_cb_3]) = r7;		\
+	*(u32*)(r1 + %[__sk_buff_cb_4]) = r8;		\
+	r0 = 0;						\
+	exit;						\
+"	:
+	: __imm_const(__sk_buff_cb_0, offsetof(struct __sk_buff, cb[0])),
+	  __imm_const(__sk_buff_cb_1, offsetof(struct __sk_buff, cb[1])),
+	  __imm_const(__sk_buff_cb_2, offsetof(struct __sk_buff, cb[2])),
+	  __imm_const(__sk_buff_cb_3, offsetof(struct __sk_buff, cb[3])),
+	  __imm_const(__sk_buff_cb_4, offsetof(struct __sk_buff, cb[4])),
+	  __imm_const(__sk_buff_napi_id, offsetof(struct __sk_buff, napi_id))
+	: __clobber_all);
+}
+
+SEC("cgroup/skb")
+__description("direct packet read test#4 for CGROUP_SKB")
+__success __success_unpriv __retval(0)
+__naked void test_4_for_cgroup_skb(void)
+{
+	asm volatile ("					\
+	r2 = *(u32*)(r1 + %[__sk_buff_family]);		\
+	r3 = *(u32*)(r1 + %[__sk_buff_remote_ip4]);	\
+	r4 = *(u32*)(r1 + %[__sk_buff_local_ip4]);	\
+	r5 = *(u32*)(r1 + %[__sk_buff_remote_ip6_0]);	\
+	r5 = *(u32*)(r1 + %[__sk_buff_remote_ip6_1]);	\
+	r5 = *(u32*)(r1 + %[__sk_buff_remote_ip6_2]);	\
+	r5 = *(u32*)(r1 + %[__sk_buff_remote_ip6_3]);	\
+	r6 = *(u32*)(r1 + %[__sk_buff_local_ip6_0]);	\
+	r6 = *(u32*)(r1 + %[__sk_buff_local_ip6_1]);	\
+	r6 = *(u32*)(r1 + %[__sk_buff_local_ip6_2]);	\
+	r6 = *(u32*)(r1 + %[__sk_buff_local_ip6_3]);	\
+	r7 = *(u32*)(r1 + %[__sk_buff_remote_port]);	\
+	r8 = *(u32*)(r1 + %[__sk_buff_local_port]);	\
+	r0 = 0;						\
+	exit;						\
+"	:
+	: __imm_const(__sk_buff_family, offsetof(struct __sk_buff, family)),
+	  __imm_const(__sk_buff_local_ip4, offsetof(struct __sk_buff, local_ip4)),
+	  __imm_const(__sk_buff_local_ip6_0, offsetof(struct __sk_buff, local_ip6[0])),
+	  __imm_const(__sk_buff_local_ip6_1, offsetof(struct __sk_buff, local_ip6[1])),
+	  __imm_const(__sk_buff_local_ip6_2, offsetof(struct __sk_buff, local_ip6[2])),
+	  __imm_const(__sk_buff_local_ip6_3, offsetof(struct __sk_buff, local_ip6[3])),
+	  __imm_const(__sk_buff_local_port, offsetof(struct __sk_buff, local_port)),
+	  __imm_const(__sk_buff_remote_ip4, offsetof(struct __sk_buff, remote_ip4)),
+	  __imm_const(__sk_buff_remote_ip6_0, offsetof(struct __sk_buff, remote_ip6[0])),
+	  __imm_const(__sk_buff_remote_ip6_1, offsetof(struct __sk_buff, remote_ip6[1])),
+	  __imm_const(__sk_buff_remote_ip6_2, offsetof(struct __sk_buff, remote_ip6[2])),
+	  __imm_const(__sk_buff_remote_ip6_3, offsetof(struct __sk_buff, remote_ip6[3])),
+	  __imm_const(__sk_buff_remote_port, offsetof(struct __sk_buff, remote_port))
+	: __clobber_all);
+}
+
+SEC("cgroup/skb")
+__description("invalid access of tc_classid for CGROUP_SKB")
+__failure __msg("invalid bpf_context access")
+__failure_unpriv
+__naked void tc_classid_for_cgroup_skb(void)
+{
+	asm volatile ("					\
+	r0 = *(u32*)(r1 + %[__sk_buff_tc_classid]);	\
+	r0 = 0;						\
+	exit;						\
+"	:
+	: __imm_const(__sk_buff_tc_classid, offsetof(struct __sk_buff, tc_classid))
+	: __clobber_all);
+}
+
+SEC("cgroup/skb")
+__description("invalid access of data_meta for CGROUP_SKB")
+__failure __msg("invalid bpf_context access")
+__failure_unpriv
+__naked void data_meta_for_cgroup_skb(void)
+{
+	asm volatile ("					\
+	r0 = *(u32*)(r1 + %[__sk_buff_data_meta]);	\
+	r0 = 0;						\
+	exit;						\
+"	:
+	: __imm_const(__sk_buff_data_meta, offsetof(struct __sk_buff, data_meta))
+	: __clobber_all);
+}
+
+SEC("cgroup/skb")
+__description("invalid access of flow_keys for CGROUP_SKB")
+__failure __msg("invalid bpf_context access")
+__failure_unpriv
+__naked void flow_keys_for_cgroup_skb(void)
+{
+	asm volatile ("					\
+	r0 = *(u32*)(r1 + %[__sk_buff_flow_keys]);	\
+	r0 = 0;						\
+	exit;						\
+"	:
+	: __imm_const(__sk_buff_flow_keys, offsetof(struct __sk_buff, flow_keys))
+	: __clobber_all);
+}
+
+SEC("cgroup/skb")
+__description("invalid write access to napi_id for CGROUP_SKB")
+__failure __msg("invalid bpf_context access")
+__failure_unpriv
+__naked void napi_id_for_cgroup_skb(void)
+{
+	asm volatile ("					\
+	r9 = *(u32*)(r1 + %[__sk_buff_napi_id]);	\
+	*(u32*)(r1 + %[__sk_buff_napi_id]) = r9;	\
+	r0 = 0;						\
+	exit;						\
+"	:
+	: __imm_const(__sk_buff_napi_id, offsetof(struct __sk_buff, napi_id))
+	: __clobber_all);
+}
+
+SEC("cgroup/skb")
+__description("write tstamp from CGROUP_SKB")
+__success __failure_unpriv
+__msg_unpriv("invalid bpf_context access off=152 size=8")
+__retval(0)
+__naked void write_tstamp_from_cgroup_skb(void)
+{
+	asm volatile ("					\
+	r0 = 0;						\
+	*(u64*)(r1 + %[__sk_buff_tstamp]) = r0;		\
+	r0 = 0;						\
+	exit;						\
+"	:
+	: __imm_const(__sk_buff_tstamp, offsetof(struct __sk_buff, tstamp))
+	: __clobber_all);
+}
+
+SEC("cgroup/skb")
+__description("read tstamp from CGROUP_SKB")
+__success __success_unpriv __retval(0)
+__naked void read_tstamp_from_cgroup_skb(void)
+{
+	asm volatile ("					\
+	r0 = *(u64*)(r1 + %[__sk_buff_tstamp]);		\
+	r0 = 0;						\
+	exit;						\
+"	:
+	: __imm_const(__sk_buff_tstamp, offsetof(struct __sk_buff, tstamp))
+	: __clobber_all);
+}
+
+char _license[] SEC("license") = "GPL";
diff --git a/tools/testing/selftests/bpf/verifier/cgroup_skb.c b/tools/testing/selftests/bpf/verifier/cgroup_skb.c
deleted file mode 100644
index 52e4c03b076ba5..00000000000000
--- a/tools/testing/selftests/bpf/verifier/cgroup_skb.c
+++ /dev/null
@@ -1,197 +0,0 @@
-{
-	"direct packet read test#1 for CGROUP_SKB",
-	.insns = {
-	BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
-		    offsetof(struct __sk_buff, data)),
-	BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
-		    offsetof(struct __sk_buff, data_end)),
-	BPF_LDX_MEM(BPF_W, BPF_REG_4, BPF_REG_1,
-		    offsetof(struct __sk_buff, len)),
-	BPF_LDX_MEM(BPF_W, BPF_REG_5, BPF_REG_1,
-		    offsetof(struct __sk_buff, pkt_type)),
-	BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
-		    offsetof(struct __sk_buff, mark)),
-	BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_6,
-		    offsetof(struct __sk_buff, mark)),
-	BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
-		    offsetof(struct __sk_buff, queue_mapping)),
-	BPF_LDX_MEM(BPF_W, BPF_REG_8, BPF_REG_1,
-		    offsetof(struct __sk_buff, protocol)),
-	BPF_LDX_MEM(BPF_W, BPF_REG_9, BPF_REG_1,
-		    offsetof(struct __sk_buff, vlan_present)),
-	BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
-	BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8),
-	BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 1),
-	BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_2, 0),
-	BPF_MOV64_IMM(BPF_REG_0, 0),
-	BPF_EXIT_INSN(),
-	},
-	.result = ACCEPT,
-	.result_unpriv = REJECT,
-	.errstr_unpriv = "invalid bpf_context access off=76 size=4",
-	.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
-},
-{
-	"direct packet read test#2 for CGROUP_SKB",
-	.insns = {
-	BPF_LDX_MEM(BPF_W, BPF_REG_4, BPF_REG_1,
-		    offsetof(struct __sk_buff, vlan_tci)),
-	BPF_LDX_MEM(BPF_W, BPF_REG_5, BPF_REG_1,
-		    offsetof(struct __sk_buff, vlan_proto)),
-	BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
-		    offsetof(struct __sk_buff, priority)),
-	BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_6,
-		    offsetof(struct __sk_buff, priority)),
-	BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
-		    offsetof(struct __sk_buff, ingress_ifindex)),
-	BPF_LDX_MEM(BPF_W, BPF_REG_8, BPF_REG_1,
-		    offsetof(struct __sk_buff, tc_index)),
-	BPF_LDX_MEM(BPF_W, BPF_REG_9, BPF_REG_1,
-		    offsetof(struct __sk_buff, hash)),
-	BPF_MOV64_IMM(BPF_REG_0, 0),
-	BPF_EXIT_INSN(),
-	},
-	.result = ACCEPT,
-	.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
-},
-{
-	"direct packet read test#3 for CGROUP_SKB",
-	.insns = {
-	BPF_LDX_MEM(BPF_W, BPF_REG_4, BPF_REG_1,
-		    offsetof(struct __sk_buff, cb[0])),
-	BPF_LDX_MEM(BPF_W, BPF_REG_5, BPF_REG_1,
-		    offsetof(struct __sk_buff, cb[1])),
-	BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
-		    offsetof(struct __sk_buff, cb[2])),
-	BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
-		    offsetof(struct __sk_buff, cb[3])),
-	BPF_LDX_MEM(BPF_W, BPF_REG_8, BPF_REG_1,
-		    offsetof(struct __sk_buff, cb[4])),
-	BPF_LDX_MEM(BPF_W, BPF_REG_9, BPF_REG_1,
-		    offsetof(struct __sk_buff, napi_id)),
-	BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_4,
-		    offsetof(struct __sk_buff, cb[0])),
-	BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_5,
-		    offsetof(struct __sk_buff, cb[1])),
-	BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_6,
-		    offsetof(struct __sk_buff, cb[2])),
-	BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_7,
-		    offsetof(struct __sk_buff, cb[3])),
-	BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_8,
-		    offsetof(struct __sk_buff, cb[4])),
-	BPF_MOV64_IMM(BPF_REG_0, 0),
-	BPF_EXIT_INSN(),
-	},
-	.result = ACCEPT,
-	.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
-},
-{
-	"direct packet read test#4 for CGROUP_SKB",
-	.insns = {
-	BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
-		    offsetof(struct __sk_buff, family)),
-	BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
-		    offsetof(struct __sk_buff, remote_ip4)),
-	BPF_LDX_MEM(BPF_W, BPF_REG_4, BPF_REG_1,
-		    offsetof(struct __sk_buff, local_ip4)),
-	BPF_LDX_MEM(BPF_W, BPF_REG_5, BPF_REG_1,
-		    offsetof(struct __sk_buff, remote_ip6[0])),
-	BPF_LDX_MEM(BPF_W, BPF_REG_5, BPF_REG_1,
-		    offsetof(struct __sk_buff, remote_ip6[1])),
-	BPF_LDX_MEM(BPF_W, BPF_REG_5, BPF_REG_1,
-		    offsetof(struct __sk_buff, remote_ip6[2])),
-	BPF_LDX_MEM(BPF_W, BPF_REG_5, BPF_REG_1,
-		    offsetof(struct __sk_buff, remote_ip6[3])),
-	BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
-		    offsetof(struct __sk_buff, local_ip6[0])),
-	BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
-		    offsetof(struct __sk_buff, local_ip6[1])),
-	BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
-		    offsetof(struct __sk_buff, local_ip6[2])),
-	BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
-		    offsetof(struct __sk_buff, local_ip6[3])),
-	BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
-		    offsetof(struct __sk_buff, remote_port)),
-	BPF_LDX_MEM(BPF_W, BPF_REG_8, BPF_REG_1,
-		    offsetof(struct __sk_buff, local_port)),
-	BPF_MOV64_IMM(BPF_REG_0, 0),
-	BPF_EXIT_INSN(),
-	},
-	.result = ACCEPT,
-	.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
-},
-{
-	"invalid access of tc_classid for CGROUP_SKB",
-	.insns = {
-	BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
-		    offsetof(struct __sk_buff, tc_classid)),
-	BPF_MOV64_IMM(BPF_REG_0, 0),
-	BPF_EXIT_INSN(),
-	},
-	.result = REJECT,
-	.errstr = "invalid bpf_context access",
-	.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
-},
-{
-	"invalid access of data_meta for CGROUP_SKB",
-	.insns = {
-	BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
-		    offsetof(struct __sk_buff, data_meta)),
-	BPF_MOV64_IMM(BPF_REG_0, 0),
-	BPF_EXIT_INSN(),
-	},
-	.result = REJECT,
-	.errstr = "invalid bpf_context access",
-	.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
-},
-{
-	"invalid access of flow_keys for CGROUP_SKB",
-	.insns = {
-	BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
-		    offsetof(struct __sk_buff, flow_keys)),
-	BPF_MOV64_IMM(BPF_REG_0, 0),
-	BPF_EXIT_INSN(),
-	},
-	.result = REJECT,
-	.errstr = "invalid bpf_context access",
-	.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
-},
-{
-	"invalid write access to napi_id for CGROUP_SKB",
-	.insns = {
-	BPF_LDX_MEM(BPF_W, BPF_REG_9, BPF_REG_1,
-		    offsetof(struct __sk_buff, napi_id)),
-	BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_9,
-		    offsetof(struct __sk_buff, napi_id)),
-	BPF_MOV64_IMM(BPF_REG_0, 0),
-	BPF_EXIT_INSN(),
-	},
-	.result = REJECT,
-	.errstr = "invalid bpf_context access",
-	.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
-},
-{
-	"write tstamp from CGROUP_SKB",
-	.insns = {
-	BPF_MOV64_IMM(BPF_REG_0, 0),
-	BPF_STX_MEM(BPF_DW, BPF_REG_1, BPF_REG_0,
-		    offsetof(struct __sk_buff, tstamp)),
-	BPF_MOV64_IMM(BPF_REG_0, 0),
-	BPF_EXIT_INSN(),
-	},
-	.result = ACCEPT,
-	.result_unpriv = REJECT,
-	.errstr_unpriv = "invalid bpf_context access off=152 size=8",
-	.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
-},
-{
-	"read tstamp from CGROUP_SKB",
-	.insns = {
-	BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1,
-		    offsetof(struct __sk_buff, tstamp)),
-	BPF_MOV64_IMM(BPF_REG_0, 0),
-	BPF_EXIT_INSN(),
-	},
-	.result = ACCEPT,
-	.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
-},