From: Alexei Starovoitov <ast@kernel.org>
Date: Thu, 28 Nov 2019 01:46:56 +0000 (-0800)
Subject: libbpf: Fix sym->st_value print on 32-bit arches
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=7c3977d1e80401b1a25efded698b05d60ee26e31;p=openwrt%2Fstaging%2Fblogic.git

libbpf: Fix sym->st_value print on 32-bit arches

The st_value field is a 64-bit value and causing this error on 32-bit arches:

In file included from libbpf.c:52:
libbpf.c: In function 'bpf_program__record_reloc':
libbpf_internal.h:59:22: error: format '%lu' expects argument of type 'long unsigned int', but argument 3 has type 'Elf64_Addr' {aka 'const long long unsigned int'} [-Werror=format=]

Fix it with (__u64) cast.

Fixes: 1f8e2bcb2cd5 ("libbpf: Refactor relocation handling")
Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
---

diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index bae692831e14..3f09772192f1 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -1817,7 +1817,7 @@ static int bpf_program__record_reloc(struct bpf_program *prog,
 			return -LIBBPF_ERRNO__RELOC;
 		}
 		if (sym->st_value % 8) {
-			pr_warn("bad call relo offset: %lu\n", sym->st_value);
+			pr_warn("bad call relo offset: %llu\n", (__u64)sym->st_value);
 			return -LIBBPF_ERRNO__RELOC;
 		}
 		reloc_desc->type = RELO_CALL;