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Date: Wed, 1 Apr 2020 00:55:37 +0300
From: Slava Bacherikov <slava@...her09.org>
To: andriin@...com
Cc: keescook@...omium.org,
bpf@...r.kernel.org,
linux-kernel@...r.kernel.org,
jannh@...gle.com,
alexei.starovoitov@...il.com,
daniel@...earbox.net,
kernel-hardening@...ts.openwall.com,
Slava Bacherikov <slava@...her09.org>,
Liu Yiding <liuyd.fnst@...fujitsu.com>
Subject: [PATCH v2 bpf] kbuild: fix dependencies for DEBUG_INFO_BTF
Currently turning on DEBUG_INFO_SPLIT when DEBUG_INFO_BTF is also
enabled will produce invalid btf file, since gen_btf function in
link-vmlinux.sh script doesn't handle *.dwo files.
Enabling DEBUG_INFO_REDUCED will also produce invalid btf file, and
using GCC_PLUGIN_RANDSTRUCT with BTF makes no sense.
Signed-off-by: Slava Bacherikov <slava@...her09.org>
Reported-by: Jann Horn <jannh@...gle.com>
Reported-by: Liu Yiding <liuyd.fnst@...fujitsu.com>
Fixes: e83b9f55448a ("kbuild: add ability to generate BTF type info for vmlinux")
---
lib/Kconfig.debug | 1 +
1 file changed, 1 insertion(+)
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index f61d834e02fe..9ae288e2a6c0 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -223,6 +223,7 @@ config DEBUG_INFO_DWARF4
config DEBUG_INFO_BTF
bool "Generate BTF typeinfo"
depends on DEBUG_INFO
+ depends on !DEBUG_INFO_SPLIT && !DEBUG_INFO_REDUCED && !GCC_PLUGIN_RANDSTRUCT
help
Generate deduplicated BTF type information from DWARF debug info.
Turning this on expects presence of pahole tool, which will convert
--
2.24.1
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