From: Slava Bacherikov <slava@bacher09.org>
To: andriin@fb.com
Cc: keescook@chromium.org, bpf@vger.kernel.org,
linux-kernel@vger.kernel.org, jannh@google.com,
alexei.starovoitov@gmail.com, daniel@iogearbox.net,
kernel-hardening@lists.openwall.com, liuyd.fnst@cn.fujitsu.com,
kpsingh@google.com, Slava Bacherikov <slava@bacher09.org>
Subject: [PATCH v5 bpf] kbuild: fix dependencies for DEBUG_INFO_BTF
Date: Thu, 2 Apr 2020 23:41:39 +0300 [thread overview]
Message-ID: <20200402204138.408021-1-slava@bacher09.org> (raw)
In-Reply-To: <202004021328.E6161480@keescook>
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@bacher09.org>
Reported-by: Jann Horn <jannh@google.com>
Reported-by: Liu Yiding <liuyd.fnst@cn.fujitsu.com>
Acked-by: KP Singh <kpsingh@google.com>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Fixes: e83b9f55448a ("kbuild: add ability to generate BTF type info for vmlinux")
---
lib/Kconfig.debug | 2 ++
1 file changed, 2 insertions(+)
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index f61d834e02fe..6118d99117da 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -223,6 +223,8 @@ 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
next prev parent reply other threads:[~2020-04-02 20:42 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-31 21:55 [PATCH v2 bpf] kbuild: fix dependencies for DEBUG_INFO_BTF Slava Bacherikov
2020-03-31 22:40 ` KP Singh
2020-04-01 0:03 ` Andrii Nakryiko
2020-04-01 7:34 ` Kees Cook
2020-04-01 14:20 ` [PATCH v3 " Slava Bacherikov
2020-04-01 14:37 ` Slava Bacherikov
2020-04-01 17:46 ` Andrii Nakryiko
2020-04-01 18:24 ` Slava Bacherikov
2020-04-01 15:49 ` Kees Cook
2020-04-02 15:33 ` [PATCH v4 " Slava Bacherikov
2020-04-02 15:40 ` Slava Bacherikov
2020-04-02 19:31 ` Andrii Nakryiko
2020-04-02 20:34 ` Kees Cook
2020-04-02 20:38 ` Slava Bacherikov
2020-04-02 20:41 ` Slava Bacherikov [this message]
2020-04-02 21:02 ` [PATCH v5 " Andrii Nakryiko
2020-04-02 22:49 ` Daniel Borkmann
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