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-rw-r--r--tools/testing/selftests/bpf/prog_tests/tcp_hdr_options.c26
-rw-r--r--tools/testing/selftests/bpf/progs/test_misc_tcp_hdr_options.c2
-rw-r--r--tools/testing/selftests/bpf/verifier/regalloc.c26
3 files changed, 28 insertions, 26 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/tcp_hdr_options.c b/tools/testing/selftests/bpf/prog_tests/tcp_hdr_options.c
index c86e67214a9e..c85174cdcb77 100644
--- a/tools/testing/selftests/bpf/prog_tests/tcp_hdr_options.c
+++ b/tools/testing/selftests/bpf/prog_tests/tcp_hdr_options.c
@@ -15,7 +15,7 @@
#include "test_tcp_hdr_options.skel.h"
#include "test_misc_tcp_hdr_options.skel.h"
-#define LO_ADDR6 "::eB9F"
+#define LO_ADDR6 "::1"
#define CG_NAME "/tcpbpf-hdr-opt-test"
struct bpf_test_option exp_passive_estab_in;
@@ -40,27 +40,6 @@ struct sk_fds {
int active_lport;
};
-static int add_lo_addr(void)
-{
- char ip_addr_cmd[256];
- int cmdlen;
-
- cmdlen = snprintf(ip_addr_cmd, sizeof(ip_addr_cmd),
- "ip -6 addr add %s/128 dev lo scope host",
- LO_ADDR6);
-
- if (CHECK(cmdlen >= sizeof(ip_addr_cmd), "compile ip cmd",
- "failed to add host addr %s to lo. ip cmdlen is too long\n",
- LO_ADDR6))
- return -1;
-
- if (CHECK(system(ip_addr_cmd), "run ip cmd",
- "failed to add host addr %s to lo\n", LO_ADDR6))
- return -1;
-
- return 0;
-}
-
static int create_netns(void)
{
if (CHECK(unshare(CLONE_NEWNET), "create netns",
@@ -72,9 +51,6 @@ static int create_netns(void)
"failed to bring lo link up\n"))
return -1;
- if (add_lo_addr())
- return -1;
-
return 0;
}
diff --git a/tools/testing/selftests/bpf/progs/test_misc_tcp_hdr_options.c b/tools/testing/selftests/bpf/progs/test_misc_tcp_hdr_options.c
index 72ec0178f653..6077a025092c 100644
--- a/tools/testing/selftests/bpf/progs/test_misc_tcp_hdr_options.c
+++ b/tools/testing/selftests/bpf/progs/test_misc_tcp_hdr_options.c
@@ -16,7 +16,7 @@
#define BPF_PROG_TEST_TCP_HDR_OPTIONS
#include "test_tcp_hdr_options.h"
-__u16 last_addr16_n = __bpf_htons(0xeB9F);
+__u16 last_addr16_n = __bpf_htons(1);
__u16 active_lport_n = 0;
__u16 active_lport_h = 0;
__u16 passive_lport_n = 0;
diff --git a/tools/testing/selftests/bpf/verifier/regalloc.c b/tools/testing/selftests/bpf/verifier/regalloc.c
index ac71b824f97a..4ad7e05de706 100644
--- a/tools/testing/selftests/bpf/verifier/regalloc.c
+++ b/tools/testing/selftests/bpf/verifier/regalloc.c
@@ -241,3 +241,29 @@
.result = ACCEPT,
.prog_type = BPF_PROG_TYPE_TRACEPOINT,
},
+{
+ "regalloc, spill, JEQ",
+ .insns = {
+ BPF_MOV64_REG(BPF_REG_6, BPF_REG_1),
+ BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
+ BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
+ BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
+ BPF_LD_MAP_FD(BPF_REG_1, 0),
+ BPF_EMIT_CALL(BPF_FUNC_map_lookup_elem),
+ BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_0, -8), /* spill r0 */
+ BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 0),
+ /* The verifier will walk the rest twice with r0 == 0 and r0 == map_value */
+ BPF_EMIT_CALL(BPF_FUNC_get_prandom_u32),
+ BPF_MOV64_REG(BPF_REG_2, BPF_REG_0),
+ BPF_JMP_IMM(BPF_JEQ, BPF_REG_2, 20, 0),
+ /* The verifier will walk the rest two more times with r0 == 20 and r0 == unknown */
+ BPF_LDX_MEM(BPF_DW, BPF_REG_3, BPF_REG_10, -8), /* fill r3 with map_value */
+ BPF_JMP_IMM(BPF_JEQ, BPF_REG_3, 0, 1), /* skip ldx if map_value == NULL */
+ /* Buggy verifier will think that r3 == 20 here */
+ BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_3, 0), /* read from map_value */
+ BPF_EXIT_INSN(),
+ },
+ .fixup_map_hash_48b = { 4 },
+ .result = ACCEPT,
+ .prog_type = BPF_PROG_TYPE_TRACEPOINT,
+},