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| author | Xu Kuohai <xukuohai@huawei.com> | 2026-06-05 17:02:41 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2026-06-06 01:55:43 +0300 |
| commit | 6fa2839893e3db43566e623f12805daeca64d9c4 (patch) | |
| tree | 7cd5e41ad8779b8d4b72ce8bc5e719e225cdc7ca | |
| parent | b403670b828a757e8122ea9be6607dae6fba1263 (diff) | |
| download | linux-6fa2839893e3db43566e623f12805daeca64d9c4.tar.xz | |
selftests/bpf: Restrict bpf_set_retval argument in sk_bypass_prot_mem
Test sk_bypass_prot_mem passes an unchecked value as argument to helper
bpf_set_retval(). The argument can be outside the valid range enforced
by the strict retval validation added in the next patch.
Restrict the argument to -EFAULT when it is outside the valid range, so
the test will not be rejected by the verifier when retval validation
is enforced.
Signed-off-by: Xu Kuohai <xukuohai@huawei.com>
Link: https://lore.kernel.org/r/20260605140243.664590-2-xukuohai@huaweicloud.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
| -rw-r--r-- | tools/testing/selftests/bpf/progs/sk_bypass_prot_mem.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/sk_bypass_prot_mem.c b/tools/testing/selftests/bpf/progs/sk_bypass_prot_mem.c index 09a00d11ffcc..bae5283fca6b 100644 --- a/tools/testing/selftests/bpf/progs/sk_bypass_prot_mem.c +++ b/tools/testing/selftests/bpf/progs/sk_bypass_prot_mem.c @@ -5,6 +5,7 @@ #include <bpf/bpf_helpers.h> #include <bpf/bpf_tracing.h> #include <errno.h> +#include "err.h" extern int tcp_memory_per_cpu_fw_alloc __ksym; extern int udp_memory_per_cpu_fw_alloc __ksym; @@ -97,6 +98,7 @@ int sock_create(struct bpf_sock *ctx) return 1; err: + set_if_not_errno_or_zero(err, -EFAULT); bpf_set_retval(err); return 0; } |