Commit 957c30c0 authored by Alexei Starovoitov's avatar Alexei Starovoitov
Browse files

selftests/bpf: adjust verifier_log buffers 



The new liveness analysis in liveness.c adds verbose output at
BPF_LOG_LEVEL2, making the verifier log for good_prog exceed the 1024-byte
reference buffer. When the reference is truncated in fixed mode, the
rolling mode captures the actual tail of the full log, which doesn't match
the truncated reference.

The fix is to increase the buffer sizes in the test.

Signed-off-by: default avatarEduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20260410-patch-set-v4-12-5d4eecb343db@gmail.com


Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
parent b42eb55f

tools/testing/selftests/bpf/prog_tests/verifier_log.c

+3 −3
Original line number Diff line number Diff line
@@ -25,10 +25,10 @@ static bool check_prog_load(int prog_fd, bool expect_err, const char *tag) 


static struct {

	/* strategically placed before others to avoid accidental modification by kernel */

	char filler[1024];

	char buf[1024];

	char filler[16384];

	char buf[16384];

	/* strategically placed after buf[] to catch more accidental corruptions */

	char reference[1024];

	char reference[16384];

} logs;

static const struct bpf_insn *insns;

static size_t insn_cnt;