[PATCH bpf-next 3/3] selftests/bpf: Mark tests that require unaligned memory access
Björn Töpel
bjorn.topel at gmail.com
Tue Nov 17 03:26:38 EST 2020
A lot of tests require unaligned memory access to work. Mark the tests
as such, so that they can be avoided on unsupported architectures such
as RISC-V.
Signed-off-by: Björn Töpel <bjorn.topel at gmail.com>
---
.../selftests/bpf/verifier/ctx_sk_lookup.c | 7 +++
.../bpf/verifier/direct_value_access.c | 3 ++
.../testing/selftests/bpf/verifier/map_ptr.c | 1 +
.../selftests/bpf/verifier/raw_tp_writable.c | 1 +
.../selftests/bpf/verifier/ref_tracking.c | 4 ++
.../testing/selftests/bpf/verifier/regalloc.c | 8 ++++
.../selftests/bpf/verifier/wide_access.c | 46 +++++++++++--------
7 files changed, 52 insertions(+), 18 deletions(-)
diff --git a/tools/testing/selftests/bpf/verifier/ctx_sk_lookup.c b/tools/testing/selftests/bpf/verifier/ctx_sk_lookup.c
index 2ad5f974451c..fb13ca2d5606 100644
--- a/tools/testing/selftests/bpf/verifier/ctx_sk_lookup.c
+++ b/tools/testing/selftests/bpf/verifier/ctx_sk_lookup.c
@@ -266,6 +266,7 @@
.result = REJECT,
.prog_type = BPF_PROG_TYPE_SK_LOOKUP,
.expected_attach_type = BPF_SK_LOOKUP,
+ .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
},
{
"invalid 8-byte read from bpf_sk_lookup remote_ip4 field",
@@ -292,6 +293,7 @@
.result = REJECT,
.prog_type = BPF_PROG_TYPE_SK_LOOKUP,
.expected_attach_type = BPF_SK_LOOKUP,
+ .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
},
{
"invalid 8-byte read from bpf_sk_lookup remote_port field",
@@ -305,6 +307,7 @@
.result = REJECT,
.prog_type = BPF_PROG_TYPE_SK_LOOKUP,
.expected_attach_type = BPF_SK_LOOKUP,
+ .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
},
{
"invalid 8-byte read from bpf_sk_lookup local_ip4 field",
@@ -331,6 +334,7 @@
.result = REJECT,
.prog_type = BPF_PROG_TYPE_SK_LOOKUP,
.expected_attach_type = BPF_SK_LOOKUP,
+ .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
},
{
"invalid 8-byte read from bpf_sk_lookup local_port field",
@@ -344,6 +348,7 @@
.result = REJECT,
.prog_type = BPF_PROG_TYPE_SK_LOOKUP,
.expected_attach_type = BPF_SK_LOOKUP,
+ .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
},
/* invalid 1,2,4-byte reads from 8-byte fields in bpf_sk_lookup */
{
@@ -410,6 +415,7 @@
.result = REJECT,
.prog_type = BPF_PROG_TYPE_SK_LOOKUP,
.expected_attach_type = BPF_SK_LOOKUP,
+ .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
},
{
"invalid 4-byte unaligned read from bpf_sk_lookup at even offset",
@@ -422,6 +428,7 @@
.result = REJECT,
.prog_type = BPF_PROG_TYPE_SK_LOOKUP,
.expected_attach_type = BPF_SK_LOOKUP,
+ .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
},
/* in-bound and out-of-bound writes to bpf_sk_lookup */
{
diff --git a/tools/testing/selftests/bpf/verifier/direct_value_access.c b/tools/testing/selftests/bpf/verifier/direct_value_access.c
index 988f46a1a4c7..c0648dc009b5 100644
--- a/tools/testing/selftests/bpf/verifier/direct_value_access.c
+++ b/tools/testing/selftests/bpf/verifier/direct_value_access.c
@@ -69,6 +69,7 @@
.fixup_map_array_48b = { 1 },
.result = REJECT,
.errstr = "R1 min value is outside of the allowed memory range",
+ .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
},
{
"direct map access, write test 7",
@@ -195,6 +196,7 @@
.fixup_map_array_48b = { 1, 3 },
.result = REJECT,
.errstr = "invalid access to map value, value_size=48 off=47 size=2",
+ .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
},
{
"direct map access, write test 17",
@@ -209,6 +211,7 @@
.fixup_map_array_48b = { 1, 3 },
.result = REJECT,
.errstr = "invalid access to map value, value_size=48 off=47 size=2",
+ .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
},
{
"direct map access, write test 18",
diff --git a/tools/testing/selftests/bpf/verifier/map_ptr.c b/tools/testing/selftests/bpf/verifier/map_ptr.c
index 637f9293bda8..b117bdd3806d 100644
--- a/tools/testing/selftests/bpf/verifier/map_ptr.c
+++ b/tools/testing/selftests/bpf/verifier/map_ptr.c
@@ -44,6 +44,7 @@
.errstr_unpriv = "bpf_array access is allowed only to CAP_PERFMON and CAP_SYS_ADMIN",
.result = REJECT,
.errstr = "cannot access ptr member ops with moff 0 in struct bpf_map with off 1 size 4",
+ .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
},
{
"bpf_map_ptr: read ops field accepted",
diff --git a/tools/testing/selftests/bpf/verifier/raw_tp_writable.c b/tools/testing/selftests/bpf/verifier/raw_tp_writable.c
index 95b5d70a1dc1..2978fb5a769d 100644
--- a/tools/testing/selftests/bpf/verifier/raw_tp_writable.c
+++ b/tools/testing/selftests/bpf/verifier/raw_tp_writable.c
@@ -31,4 +31,5 @@
.fixup_map_hash_8b = { 1, },
.prog_type = BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE,
.errstr = "R6 invalid variable buffer offset: off=0, var_off=(0x0; 0xffffffff)",
+ .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
},
diff --git a/tools/testing/selftests/bpf/verifier/ref_tracking.c b/tools/testing/selftests/bpf/verifier/ref_tracking.c
index 006b5bd99c08..3b6ee009c00b 100644
--- a/tools/testing/selftests/bpf/verifier/ref_tracking.c
+++ b/tools/testing/selftests/bpf/verifier/ref_tracking.c
@@ -675,6 +675,7 @@
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
.result = REJECT,
.errstr = "invalid mem access",
+ .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
},
{
"reference tracking: use ptr from bpf_sk_fullsock() after release",
@@ -698,6 +699,7 @@
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
.result = REJECT,
.errstr = "invalid mem access",
+ .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
},
{
"reference tracking: use ptr from bpf_sk_fullsock(tp) after release",
@@ -725,6 +727,7 @@
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
.result = REJECT,
.errstr = "invalid mem access",
+ .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
},
{
"reference tracking: use sk after bpf_sk_release(tp)",
@@ -747,6 +750,7 @@
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
.result = REJECT,
.errstr = "invalid mem access",
+ .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
},
{
"reference tracking: use ptr from bpf_get_listener_sock() after bpf_sk_release(sk)",
diff --git a/tools/testing/selftests/bpf/verifier/regalloc.c b/tools/testing/selftests/bpf/verifier/regalloc.c
index 4ad7e05de706..bb0dd89dd212 100644
--- a/tools/testing/selftests/bpf/verifier/regalloc.c
+++ b/tools/testing/selftests/bpf/verifier/regalloc.c
@@ -21,6 +21,7 @@
.fixup_map_hash_48b = { 4 },
.result = ACCEPT,
.prog_type = BPF_PROG_TYPE_TRACEPOINT,
+ .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
},
{
"regalloc negative",
@@ -71,6 +72,7 @@
.fixup_map_hash_48b = { 4 },
.result = ACCEPT,
.prog_type = BPF_PROG_TYPE_TRACEPOINT,
+ .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
},
{
"regalloc src_reg negative",
@@ -97,6 +99,7 @@
.result = REJECT,
.errstr = "invalid access to map value, value_size=48 off=44 size=8",
.prog_type = BPF_PROG_TYPE_TRACEPOINT,
+ .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
},
{
"regalloc and spill",
@@ -126,6 +129,7 @@
.fixup_map_hash_48b = { 4 },
.result = ACCEPT,
.prog_type = BPF_PROG_TYPE_TRACEPOINT,
+ .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
},
{
"regalloc and spill negative",
@@ -156,6 +160,7 @@
.result = REJECT,
.errstr = "invalid access to map value, value_size=48 off=48 size=8",
.prog_type = BPF_PROG_TYPE_TRACEPOINT,
+ .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
},
{
"regalloc three regs",
@@ -182,6 +187,7 @@
.fixup_map_hash_48b = { 4 },
.result = ACCEPT,
.prog_type = BPF_PROG_TYPE_TRACEPOINT,
+ .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
},
{
"regalloc after call",
@@ -210,6 +216,7 @@
.fixup_map_hash_48b = { 4 },
.result = ACCEPT,
.prog_type = BPF_PROG_TYPE_TRACEPOINT,
+ .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
},
{
"regalloc in callee",
@@ -240,6 +247,7 @@
.fixup_map_hash_48b = { 4 },
.result = ACCEPT,
.prog_type = BPF_PROG_TYPE_TRACEPOINT,
+ .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
},
{
"regalloc, spill, JEQ",
diff --git a/tools/testing/selftests/bpf/verifier/wide_access.c b/tools/testing/selftests/bpf/verifier/wide_access.c
index ccade9312d21..55af248efa93 100644
--- a/tools/testing/selftests/bpf/verifier/wide_access.c
+++ b/tools/testing/selftests/bpf/verifier/wide_access.c
@@ -1,4 +1,4 @@
-#define BPF_SOCK_ADDR_STORE(field, off, res, err) \
+#define BPF_SOCK_ADDR_STORE(field, off, res, err, flgs) \
{ \
"wide store to bpf_sock_addr." #field "[" #off "]", \
.insns = { \
@@ -11,31 +11,36 @@
.prog_type = BPF_PROG_TYPE_CGROUP_SOCK_ADDR, \
.expected_attach_type = BPF_CGROUP_UDP6_SENDMSG, \
.errstr = err, \
+ .flags = flgs, \
}
/* user_ip6[0] is u64 aligned */
BPF_SOCK_ADDR_STORE(user_ip6, 0, ACCEPT,
- NULL),
+ NULL, 0),
BPF_SOCK_ADDR_STORE(user_ip6, 1, REJECT,
- "invalid bpf_context access off=12 size=8"),
+ "invalid bpf_context access off=12 size=8",
+ F_NEEDS_EFFICIENT_UNALIGNED_ACCESS),
BPF_SOCK_ADDR_STORE(user_ip6, 2, ACCEPT,
- NULL),
+ NULL, 0),
BPF_SOCK_ADDR_STORE(user_ip6, 3, REJECT,
- "invalid bpf_context access off=20 size=8"),
+ "invalid bpf_context access off=20 size=8",
+ F_NEEDS_EFFICIENT_UNALIGNED_ACCESS),
/* msg_src_ip6[0] is _not_ u64 aligned */
BPF_SOCK_ADDR_STORE(msg_src_ip6, 0, REJECT,
- "invalid bpf_context access off=44 size=8"),
+ "invalid bpf_context access off=44 size=8",
+ F_NEEDS_EFFICIENT_UNALIGNED_ACCESS),
BPF_SOCK_ADDR_STORE(msg_src_ip6, 1, ACCEPT,
- NULL),
+ NULL, 0),
BPF_SOCK_ADDR_STORE(msg_src_ip6, 2, REJECT,
- "invalid bpf_context access off=52 size=8"),
+ "invalid bpf_context access off=52 size=8",
+ F_NEEDS_EFFICIENT_UNALIGNED_ACCESS),
BPF_SOCK_ADDR_STORE(msg_src_ip6, 3, REJECT,
- "invalid bpf_context access off=56 size=8"),
+ "invalid bpf_context access off=56 size=8", 0),
#undef BPF_SOCK_ADDR_STORE
-#define BPF_SOCK_ADDR_LOAD(field, off, res, err) \
+#define BPF_SOCK_ADDR_LOAD(field, off, res, err, flgs) \
{ \
"wide load from bpf_sock_addr." #field "[" #off "]", \
.insns = { \
@@ -48,26 +53,31 @@ BPF_SOCK_ADDR_STORE(msg_src_ip6, 3, REJECT,
.prog_type = BPF_PROG_TYPE_CGROUP_SOCK_ADDR, \
.expected_attach_type = BPF_CGROUP_UDP6_SENDMSG, \
.errstr = err, \
+ .flags = flgs, \
}
/* user_ip6[0] is u64 aligned */
BPF_SOCK_ADDR_LOAD(user_ip6, 0, ACCEPT,
- NULL),
+ NULL, 0),
BPF_SOCK_ADDR_LOAD(user_ip6, 1, REJECT,
- "invalid bpf_context access off=12 size=8"),
+ "invalid bpf_context access off=12 size=8",
+ F_NEEDS_EFFICIENT_UNALIGNED_ACCESS),
BPF_SOCK_ADDR_LOAD(user_ip6, 2, ACCEPT,
- NULL),
+ NULL, 0),
BPF_SOCK_ADDR_LOAD(user_ip6, 3, REJECT,
- "invalid bpf_context access off=20 size=8"),
+ "invalid bpf_context access off=20 size=8",
+ F_NEEDS_EFFICIENT_UNALIGNED_ACCESS),
/* msg_src_ip6[0] is _not_ u64 aligned */
BPF_SOCK_ADDR_LOAD(msg_src_ip6, 0, REJECT,
- "invalid bpf_context access off=44 size=8"),
+ "invalid bpf_context access off=44 size=8",
+ F_NEEDS_EFFICIENT_UNALIGNED_ACCESS),
BPF_SOCK_ADDR_LOAD(msg_src_ip6, 1, ACCEPT,
- NULL),
+ NULL, 0),
BPF_SOCK_ADDR_LOAD(msg_src_ip6, 2, REJECT,
- "invalid bpf_context access off=52 size=8"),
+ "invalid bpf_context access off=52 size=8",
+ F_NEEDS_EFFICIENT_UNALIGNED_ACCESS),
BPF_SOCK_ADDR_LOAD(msg_src_ip6, 3, REJECT,
- "invalid bpf_context access off=56 size=8"),
+ "invalid bpf_context access off=56 size=8", 0),
#undef BPF_SOCK_ADDR_LOAD
--
2.27.0
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