diff options
| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2021-07-01 14:20:58 -0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-07-14 17:00:29 +0200 |
| commit | 09c44aacefa497d9183c118a0b799beaf0a89ca7 (patch) | |
| tree | dce24d47c7a0de908d733cef838c9b5fa76a0cee | |
| parent | 6d41a4b78cfa5694adbab2c93e287f8efb370bbb (diff) | |
perf llvm: Return -ENOMEM when asprintf() fails
[ Upstream commit c435c166dcf526ac827bc964d82cc0d5e7a1fd0b ]
Zhihao sent a patch but it made llvm__compile_bpf() return what
asprintf() returns on error, which is just -1, but since this function
returns -errno, fix it by returning -ENOMEM for this case instead.
Fixes: cb76371441d098 ("perf llvm: Allow passing options to llc ...")
Fixes: 5eab5a7ee032ac ("perf llvm: Display eBPF compiling command ...")
Reported-by: Hulk Robot <hulkci@huawei.com>
Reported-by: Zhihao Cheng <chengzhihao1@huawei.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Andrii Nakryiko <andrii@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Yu Kuai <yukuai3@huawei.com>
Cc: clang-built-linux@googlegroups.com
Link: http://lore.kernel.org/lkml/20210609115945.2193194-1-chengzhihao1@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | tools/perf/util/llvm-utils.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/perf/util/llvm-utils.c b/tools/perf/util/llvm-utils.c index dbdffb6673feb..0bf6b4d4c90a7 100644 --- a/tools/perf/util/llvm-utils.c +++ b/tools/perf/util/llvm-utils.c @@ -504,6 +504,7 @@ int llvm__compile_bpf(const char *path, void **p_obj_buf, goto errout; } + err = -ENOMEM; if (asprintf(&pipe_template, "%s -emit-llvm | %s -march=bpf %s -filetype=obj -o -", template, llc_path, opts) < 0) { pr_err("ERROR:\tnot enough memory to setup command line\n"); @@ -524,6 +525,7 @@ int llvm__compile_bpf(const char *path, void **p_obj_buf, pr_debug("llvm compiling command template: %s\n", template); + err = -ENOMEM; if (asprintf(&command_echo, "echo -n \"%s\"", template) < 0) goto errout; |