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| author |   Yuntao Wang <ytcoode@gmail.com> | 2022-04-05 22:57:11 +0800 |
|---|---|---|
| committer |   Andrii Nakryiko <andrii@kernel.org> | 2022-04-05 16:49:32 -0700 |
| commit | 2d0df01974ce2b59b6f7d5bd3ea58d74f12ddf85 (patch) | |
| tree | 1bd0c799be678e7e8abaf2e378e42560ea1f05cc /tools/testing/selftests/bpf/trace_helpers.c | |
| parent | bpf, arm64: Sign return address for JITed code (diff) | |
| download | linux-dev-2d0df01974ce2b59b6f7d5bd3ea58d74f12ddf85.tar.xz linux-dev-2d0df01974ce2b59b6f7d5bd3ea58d74f12ddf85.zip | |
selftests/bpf: Fix file descriptor leak in load_kallsyms()
Currently, if sym_cnt > 0, it just returns and does not close file, fix it.
Signed-off-by: Yuntao Wang <ytcoode@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20220405145711.49543-1-ytcoode@gmail.com
Diffstat (limited to 'tools/testing/selftests/bpf/trace_helpers.c')
| -rw-r--r-- | tools/testing/selftests/bpf/trace_helpers.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/tools/testing/selftests/bpf/trace_helpers.c b/tools/testing/selftests/bpf/trace_helpers.c index 3d6217e3aff7..9c4be2cdb21a 100644 --- a/tools/testing/selftests/bpf/trace_helpers.c +++ b/tools/testing/selftests/bpf/trace_helpers.c @@ -25,15 +25,12 @@ static int ksym_cmp(const void *p1, const void *p2) int load_kallsyms(void) { - FILE *f = fopen("/proc/kallsyms", "r"); + FILE *f; char func[256], buf[256]; char symbol; void *addr; int i = 0; - if (!f) - return -ENOENT; - /* * This is called/used from multiplace places, * load symbols just once. @@ -41,6 +38,10 @@ int load_kallsyms(void) if (sym_cnt) return 0; + f = fopen("/proc/kallsyms", "r"); + if (!f) + return -ENOENT; + while (fgets(buf, sizeof(buf), f)) { if (sscanf(buf, "%p %c %s", &addr, &symbol, func) != 3) break; |