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| author | Ruowen Qin <ruowenq2@illinois.edu> | 2023-09-26 23:50:30 -0500 |
|---|---|---|
| committer | Andrii Nakryiko <andrii@kernel.org> | 2023-09-28 09:31:05 -0700 |
| commit | 9e09b75079e229b08f12a732712100fdb9af8cab (patch) | |
| tree | b12d556d10ab041bfa4b9e19f9befa31137a7dfd /samples | |
| parent | 0e73ef1d8c09a1f21ca2b19684819dbbcdce00f9 (diff) | |
| download | lwn-9e09b75079e229b08f12a732712100fdb9af8cab.tar.gz lwn-9e09b75079e229b08f12a732712100fdb9af8cab.zip | |
samples/bpf: Add -fsanitize=bounds to userspace programs
The sanitizer flag, which is supported by both clang and gcc, would make
it easier to debug array index out-of-bounds problems in these programs.
Make the Makfile smarter to detect ubsan support from the compiler and
add the '-fsanitize=bounds' accordingly.
Suggested-by: Mimi Zohar <zohar@linux.ibm.com>
Signed-off-by: Jinghao Jia <jinghao@linux.ibm.com>
Signed-off-by: Jinghao Jia <jinghao7@illinois.edu>
Signed-off-by: Ruowen Qin <ruowenq2@illinois.edu>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Tested-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/bpf/20230927045030.224548-2-ruowenq2@illinois.edu
Diffstat (limited to 'samples')
| -rw-r--r-- | samples/bpf/Makefile | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile index 6c707ebcebb9..90af76fa9dd8 100644 --- a/samples/bpf/Makefile +++ b/samples/bpf/Makefile @@ -169,6 +169,9 @@ endif TPROGS_CFLAGS += -Wall -O2 TPROGS_CFLAGS += -Wmissing-prototypes TPROGS_CFLAGS += -Wstrict-prototypes +TPROGS_CFLAGS += $(call try-run,\ + printf "int main() { return 0; }" |\ + $(CC) -Werror -fsanitize=bounds -x c - -o "$$TMP",-fsanitize=bounds,) TPROGS_CFLAGS += -I$(objtree)/usr/include TPROGS_CFLAGS += -I$(srctree)/tools/testing/selftests/bpf/ |