From: "Daniel T. Lee" <danieltimlee@gmail.com>
To: Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Andrii Nakryiko <andrii@kernel.org>
Cc: Martin KaFai Lau <martin.lau@linux.dev>,
Song Liu <song@kernel.org>,
Yonghong Song <yonghong.song@linux.dev>,
John Fastabend <john.fastabend@gmail.com>,
KP Singh <kpsingh@kernel.org>,
Stanislav Fomichev <sdf@google.com>, Hao Luo <haoluo@google.com>,
Jiri Olsa <jolsa@kernel.org>, Jens Axboe <axboe@kernel.dk>,
Johannes Thumshirn <johannes.thumshirn@wdc.com>,
netdev@vger.kernel.org, bpf@vger.kernel.org
Subject: [bpf-next 1/9] samples/bpf: fix warning with ignored-attributes
Date: Fri, 18 Aug 2023 18:01:11 +0900 [thread overview]
Message-ID: <20230818090119.477441-2-danieltimlee@gmail.com> (raw)
In-Reply-To: <20230818090119.477441-1-danieltimlee@gmail.com>
Currently, compiling the bpf programs will result the warning with the
ignored attribute as follows. This commit fixes the warning by adding
cf-protection option.
In file included from ./arch/x86/include/asm/linkage.h:6:
./arch/x86/include/asm/ibt.h:77:8: warning: 'nocf_check' attribute ignored; use -fcf-protection to enable the attribute [-Wignored-attributes]
extern __noendbr u64 ibt_save(bool disable);
^
./arch/x86/include/asm/ibt.h:32:34: note: expanded from macro '__noendbr'
^
Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
---
samples/bpf/Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile
index 595b98d825ce..b32cb8a62335 100644
--- a/samples/bpf/Makefile
+++ b/samples/bpf/Makefile
@@ -440,7 +440,7 @@ $(obj)/%.o: $(src)/%.c
-Wno-gnu-variable-sized-type-not-at-end \
-Wno-address-of-packed-member -Wno-tautological-compare \
-Wno-unknown-warning-option $(CLANG_ARCH_ARGS) \
- -fno-asynchronous-unwind-tables \
+ -fno-asynchronous-unwind-tables -fcf-protection \
-I$(srctree)/samples/bpf/ -include asm_goto_workaround.h \
-O2 -emit-llvm -Xclang -disable-llvm-passes -c $< -o - | \
$(OPT) -O2 -mtriple=bpf-pc-linux | $(LLVM_DIS) | \
--
2.34.1
next prev parent reply other threads:[~2023-08-18 9:01 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-18 9:01 [bpf-next 0/9] samples/bpf: make BPF programs more libbpf aware Daniel T. Lee
2023-08-18 9:01 ` Daniel T. Lee [this message]
2023-08-18 9:01 ` [bpf-next 2/9] samples/bpf: convert to vmlinux.h with tracing programs Daniel T. Lee
2023-08-18 9:01 ` [bpf-next 3/9] samples/bpf: unify bpf program suffix to .bpf " Daniel T. Lee
2023-08-18 9:01 ` [bpf-next 4/9] samples/bpf: fix symbol mismatch by compiler optimization Daniel T. Lee
2023-08-18 9:01 ` [bpf-next 5/9] samples/bpf: make tracing programs to be more CO-RE centric Daniel T. Lee
2023-08-18 9:01 ` [bpf-next 6/9] samples/bpf: fix bio latency check with tracepoint Daniel T. Lee
2023-08-18 9:01 ` [bpf-next 7/9] samples/bpf: fix broken map lookup probe Daniel T. Lee
2023-08-18 9:01 ` [bpf-next 8/9] samples/bpf: refactor syscall tracing programs using BPF_KSYSCALL macro Daniel T. Lee
2023-08-18 9:01 ` [bpf-next 9/9] samples/bpf: simplify spintest with kprobe.multi Daniel T. Lee
2023-08-21 22:50 ` [bpf-next 0/9] samples/bpf: make BPF programs more libbpf aware patchwork-bot+netdevbpf
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