From: Gregory Bell Date: Mon, 12 May 2025 14:04:13 +0000 (-0400) Subject: selftests/bpf: test_verifier verbose log overflows X-Git-Tag: v6.16-rc1~131^2~31^2 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=af8a5125a04c128cbcc1daa21d9ba3e5d95a2fc4;p=linux-2.6-block.git selftests/bpf: test_verifier verbose log overflows Tests: - 458/p ld_dw: xor semi-random 64-bit imms, test 5 - 501/p scale: scale test 1 - 502/p scale: scale test 2 fail in verbose mode due to bpf_vlog[] overflowing. These tests generate large verifier logs that exceed the current buffer size, causing them to fail to load. Increase the size of the bpf_vlog[] buffer to accommodate larger logs and prevent false failures during test runs with verbose output. Signed-off-by: Gregory Bell Link: https://lore.kernel.org/r/e49267100f07f099a5877a3a5fc797b702bbaf0c.1747058195.git.grbell@redhat.com Signed-off-by: Alexei Starovoitov --- diff --git a/tools/testing/selftests/bpf/test_verifier.c b/tools/testing/selftests/bpf/test_verifier.c index 2d13e862b078..27db34ecf3f5 100644 --- a/tools/testing/selftests/bpf/test_verifier.c +++ b/tools/testing/selftests/bpf/test_verifier.c @@ -734,7 +734,7 @@ static __u32 btf_raw_types[] = { BTF_MEMBER_ENC(71, 13, 128), /* struct prog_test_member __kptr *ptr; */ }; -static char bpf_vlog[UINT_MAX >> 8]; +static char bpf_vlog[UINT_MAX >> 5]; static int load_btf_spec(__u32 *types, int types_len, const char *strings, int strings_len)