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sync with bpf-next

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Sync with the following bug fix:
  commit a8a1f7d09cfc7e18874786c7634c9e71384fcd4e (HEAD -> bpf-next2, bpf-next/master)
  Author: Stanislav Fomichev <sdf@google.com>
  Date:   Mon Feb 4 16:20:55 2019 -0800

    libbpf: fix libbpf_print

    With the recent print rework we now have the following problem:
    pr_{warning,info,debug} expand to __pr which calls libbpf_print.
    libbpf_print does va_start and calls __libbpf_pr with va_list argument.
    In __base_pr we again do va_start. Because the next argument is a
    va_list, we don't get correct pointer to the argument (and print noting
    in my case, I don't know why it doesn't crash tbh).

    ......

    Signed-off-by: Stanislav Fomichev <sdf@google.com>

Signed-off-by: Yonghong Song <yhs@fb.com>
This commit is contained in:
Yonghong Song
2019-02-04 19:42:31 -08:00
parent 30388a7afd
commit b19c6dcf62
2 changed files with 5 additions and 12 deletions
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3
src/libbpf.h
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@@ -54,8 +54,7 @@ enum libbpf_print_level {
};
typedef int (*libbpf_print_fn_t)(enum libbpf_print_level level,
const char *, ...)
__attribute__((format(printf, 2, 3)));
const char *, va_list ap);
LIBBPF_API void libbpf_set_print(libbpf_print_fn_t fn);