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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /tools/testing/selftests/bpf/verifier/wide_access.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/testing/selftests/bpf/verifier/wide_access.c')
-rw-r--r--tools/testing/selftests/bpf/verifier/wide_access.c83
1 files changed, 83 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/verifier/wide_access.c b/tools/testing/selftests/bpf/verifier/wide_access.c
new file mode 100644
index 000000000..55af248ef
--- /dev/null
+++ b/tools/testing/selftests/bpf/verifier/wide_access.c
@@ -0,0 +1,83 @@
+#define BPF_SOCK_ADDR_STORE(field, off, res, err, flgs) \
+{ \
+ "wide store to bpf_sock_addr." #field "[" #off "]", \
+ .insns = { \
+ BPF_MOV64_IMM(BPF_REG_0, 1), \
+ BPF_STX_MEM(BPF_DW, BPF_REG_1, BPF_REG_0, \
+ offsetof(struct bpf_sock_addr, field[off])), \
+ BPF_EXIT_INSN(), \
+ }, \
+ .result = res, \
+ .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, 0),
+BPF_SOCK_ADDR_STORE(user_ip6, 1, REJECT,
+ "invalid bpf_context access off=12 size=8",
+ F_NEEDS_EFFICIENT_UNALIGNED_ACCESS),
+BPF_SOCK_ADDR_STORE(user_ip6, 2, ACCEPT,
+ NULL, 0),
+BPF_SOCK_ADDR_STORE(user_ip6, 3, REJECT,
+ "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",
+ F_NEEDS_EFFICIENT_UNALIGNED_ACCESS),
+BPF_SOCK_ADDR_STORE(msg_src_ip6, 1, ACCEPT,
+ NULL, 0),
+BPF_SOCK_ADDR_STORE(msg_src_ip6, 2, REJECT,
+ "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", 0),
+
+#undef BPF_SOCK_ADDR_STORE
+
+#define BPF_SOCK_ADDR_LOAD(field, off, res, err, flgs) \
+{ \
+ "wide load from bpf_sock_addr." #field "[" #off "]", \
+ .insns = { \
+ BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, \
+ offsetof(struct bpf_sock_addr, field[off])), \
+ BPF_MOV64_IMM(BPF_REG_0, 1), \
+ BPF_EXIT_INSN(), \
+ }, \
+ .result = res, \
+ .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, 0),
+BPF_SOCK_ADDR_LOAD(user_ip6, 1, REJECT,
+ "invalid bpf_context access off=12 size=8",
+ F_NEEDS_EFFICIENT_UNALIGNED_ACCESS),
+BPF_SOCK_ADDR_LOAD(user_ip6, 2, ACCEPT,
+ NULL, 0),
+BPF_SOCK_ADDR_LOAD(user_ip6, 3, REJECT,
+ "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",
+ F_NEEDS_EFFICIENT_UNALIGNED_ACCESS),
+BPF_SOCK_ADDR_LOAD(msg_src_ip6, 1, ACCEPT,
+ NULL, 0),
+BPF_SOCK_ADDR_LOAD(msg_src_ip6, 2, REJECT,
+ "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", 0),
+
+#undef BPF_SOCK_ADDR_LOAD