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| author | Alexei Starovoitov <ast@kernel.org> | 2021-09-27 17:59:37 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2021-09-29 23:27:19 +0300 |
| commit | 66fe33241726d1f872e55d95a35c063d58602ae1 (patch) | |
| tree | 6988bd302f461c4acc937386978214ac784a8b35 /tools/lib/bpf/gen_loader.c | |
| parent | e31eec77e4ab90dcec7d2da93415f839098dc287 (diff) | |
| download | linux-66fe33241726d1f872e55d95a35c063d58602ae1.tar.xz | |
libbpf: Make gen_loader data aligned.
Align gen_loader data to 8 byte boundary to make sure union bpf_attr,
bpf_insns and other structs are aligned.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20210927145941.1383001-9-memxor@gmail.com
Diffstat (limited to 'tools/lib/bpf/gen_loader.c')
| -rw-r--r-- | tools/lib/bpf/gen_loader.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/tools/lib/bpf/gen_loader.c b/tools/lib/bpf/gen_loader.c index 8df718a6b142..80087b13877f 100644 --- a/tools/lib/bpf/gen_loader.c +++ b/tools/lib/bpf/gen_loader.c @@ -5,6 +5,7 @@ #include <string.h> #include <errno.h> #include <linux/filter.h> +#include <sys/param.h> #include "btf.h" #include "bpf.h" #include "libbpf.h" @@ -135,13 +136,17 @@ void bpf_gen__init(struct bpf_gen *gen, int log_level) static int add_data(struct bpf_gen *gen, const void *data, __u32 size) { + __u32 size8 = roundup(size, 8); + __u64 zero = 0; void *prev; - if (realloc_data_buf(gen, size)) + if (realloc_data_buf(gen, size8)) return 0; prev = gen->data_cur; memcpy(gen->data_cur, data, size); gen->data_cur += size; + memcpy(gen->data_cur, &zero, size8 - size); + gen->data_cur += size8 - size; return prev - gen->data_start; } |