openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

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: e83b9f5544 ("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
This commit is contained in:
Slava Bacherikov 2020-04-02 23:41:39 +03:00 committed by Daniel Borkmann
parent 21f64e72e7
commit 7d32e69310
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
lib/Kconfig.debug
View File

@ -241,6 +241,8 @@ config DEBUG_INFO_DWARF4
config DEBUG_INFO_BTF config DEBUG_INFO_BTF
bool "Generate BTF typeinfo" bool "Generate BTF typeinfo"
depends on DEBUG_INFO depends on DEBUG_INFO
depends on !DEBUG_INFO_SPLIT && !DEBUG_INFO_REDUCED
depends on !GCC_PLUGIN_RANDSTRUCT || COMPILE_TEST
help help
Generate deduplicated BTF type information from DWARF debug info. Generate deduplicated BTF type information from DWARF debug info.
Turning this on expects presence of pahole tool, which will convert Turning this on expects presence of pahole tool, which will convert