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authorSlava Bacherikov <slava@bacher09.org>2020-04-02 23:41:39 +0300
committerDaniel Borkmann <daniel@iogearbox.net>2020-04-03 00:27:36 +0200
commit7d32e69310d67e6b04af04f26193f79dfc2f05c7 (patch)
tree0373a81cc322aed49517e4a2873f80c06711c9db
parent21f64e72e7073199a6f8d7d8efe52cd814d7d665 (diff)
downloadlinux-7d32e69310d67e6b04af04f26193f79dfc2f05c7.tar.bz2
kbuild, btf: 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. Fixes: e83b9f55448a ("kbuild: add ability to generate BTF type info for vmlinux") Reported-by: Jann Horn <jannh@google.com> Reported-by: Liu Yiding <liuyd.fnst@cn.fujitsu.com> Signed-off-by: Slava Bacherikov <slava@bacher09.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Kees Cook <keescook@chromium.org> Acked-by: KP Singh <kpsingh@google.com> Acked-by: Andrii Nakryiko <andriin@fb.com> Link: https://lore.kernel.org/bpf/20200402204138.408021-1-slava@bacher09.org
-rw-r--r--lib/Kconfig.debug2
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index a85a6a423bf4..4cb4671b1d9e 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -241,6 +241,8 @@ config DEBUG_INFO_DWARF4
config DEBUG_INFO_BTF
bool "Generate BTF typeinfo"
depends on DEBUG_INFO
+ depends on !DEBUG_INFO_SPLIT && !DEBUG_INFO_REDUCED
+ depends on !GCC_PLUGIN_RANDSTRUCT || COMPILE_TEST
help
Generate deduplicated BTF type information from DWARF debug info.
Turning this on expects presence of pahole tool, which will convert