-
Connor O'Brien authored
Enabling CONFIG_MODULE_ALLOW_BTF_MISMATCH is an indication that BTF mismatches are expected and module loading should proceed anyway. Logging with pr_warn() on every one of these "benign" mismatches creates unnecessary noise when many such modules are loaded. Instead, handle this case with a single log warning that BTF info may be unavailable. Mismatches also result in calls to __btf_verifier_log() via __btf_verifier_log_type() or btf_verifier_log_member(), adding several additional lines of logging per mismatched module. Add checks to these paths to skip logging for module BTF mismatches in the "allow mismatch" case. All existing logging behavior is preserved in the default CONFIG_MODULE_ALLOW_BTF_MISMATCH=n case. Signed-off-by:
Connor O'Brien <connoro@google.com> Acked-by:
Yonghong Song <yhs@fb.com> Link: https://lore.kernel.org/r/20230107025331.3240536-1-connoro@google.comSigned-off-by:
Martin KaFai Lau <martin.lau@kernel.org>
9cb61e50