From: Cupertino Miranda Date: Mon, 19 Aug 2024 15:11:27 +0000 (+0100) Subject: selftests/bpf: Disable strict aliasing for verifier_nocsr.c X-Git-Tag: v6.12-rc1~112^2~85^2~1 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=2aa93695081d4bd62350b41d58684d802be4563f;p=thirdparty%2Fkernel%2Flinux.git selftests/bpf: Disable strict aliasing for verifier_nocsr.c verfifier_nocsr.c fails to compile in GCC. The reason behind it was initially explained in commit 27a90b14b93d3b2e1efd10764e456af7e2a42991. "A few BPF selftests perform type punning and they may break strict aliasing rules, which are exploited by both GCC and clang by default while optimizing. This can lead to broken compiled programs." Signed-off-by: Cupertino Miranda Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20240819151129.1366484-2-cupertino.miranda@oracle.com --- diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile index 4eceb491a8aeb..7bca9a2b8bc07 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -58,6 +58,7 @@ progs/test_pkt_md_access.c-CFLAGS := -fno-strict-aliasing progs/test_sk_lookup.c-CFLAGS := -fno-strict-aliasing progs/timer_crash.c-CFLAGS := -fno-strict-aliasing progs/test_global_func9.c-CFLAGS := -fno-strict-aliasing +progs/verifier_nocsr.c-CFLAGS := -fno-strict-aliasing ifneq ($(LLVM),) # Silence some warnings when compiled with clang