diff options
| author | YueHaibing <yuehaibing@huawei.com> | 2018-05-11 19:21:42 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-07-08 15:30:52 +0200 |
| commit | ae14c044587eceb1775c03e0be9e4e547d262aa2 (patch) | |
| tree | dd481a876cda8b5a1339557f1e3795e58c986087 | |
| parent | be5af6bec31a5c22f61de1be848c3fd0e6e3a2f8 (diff) | |
perf bpf: Fix NULL return handling in bpf__prepare_load()
[ Upstream commit ab4e32ff5aa797eaea551dbb67946e2fcb56cc7e ]
bpf_object__open()/bpf_object__open_buffer can return error pointer or
NULL, check the return values with IS_ERR_OR_NULL() in bpf__prepare_load
and bpf__prepare_load_buffer
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: netdev@vger.kernel.org
Link: https://lkml.kernel.org/n/tip-psf4xwc09n62al2cb9s33v9h@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | tools/perf/util/bpf-loader.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/tools/perf/util/bpf-loader.c b/tools/perf/util/bpf-loader.c index 72c107fcbc5a..c02d2cfd3aea 100644 --- a/tools/perf/util/bpf-loader.c +++ b/tools/perf/util/bpf-loader.c @@ -66,7 +66,7 @@ bpf__prepare_load_buffer(void *obj_buf, size_t obj_buf_sz, const char *name) } obj = bpf_object__open_buffer(obj_buf, obj_buf_sz, name); - if (IS_ERR(obj)) { + if (IS_ERR_OR_NULL(obj)) { pr_debug("bpf: failed to load buffer\n"); return ERR_PTR(-EINVAL); } @@ -102,14 +102,14 @@ struct bpf_object *bpf__prepare_load(const char *filename, bool source) pr_debug("bpf: successfull builtin compilation\n"); obj = bpf_object__open_buffer(obj_buf, obj_buf_sz, filename); - if (!IS_ERR(obj) && llvm_param.dump_obj) + if (!IS_ERR_OR_NULL(obj) && llvm_param.dump_obj) llvm__dump_obj(filename, obj_buf, obj_buf_sz); free(obj_buf); } else obj = bpf_object__open(filename); - if (IS_ERR(obj)) { + if (IS_ERR_OR_NULL(obj)) { pr_debug("bpf: failed to load %s\n", filename); return obj; } |