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| author |   Chenyuan Mi <cymi20@fudan.edu.cn> | 2023-06-14 08:01:18 -0700 |
|---|---|---|
| committer |   Namhyung Kim <namhyung@kernel.org> | 2023-06-20 16:55:35 -0700 |
| commit | 53fc25b7f557089aff101235152ae4bff15c428a (patch) | |
| tree | 864cba4e08d999ce2895599c9238ef0bdf05f9db /tools/lib/subcmd | |
| parent | perf parse-events: Remove unneeded semicolon (diff) | |
| download | wireguard-linux-53fc25b7f557089aff101235152ae4bff15c428a.tar.xz wireguard-linux-53fc25b7f557089aff101235152ae4bff15c428a.zip | |
perf subcmd: Fix missing check for return value of malloc() in add_cmdname()
The malloc() function may return NULL when it fails,
which may cause null pointer deference in add_cmdname(),
add Null check for return value of malloc().
Found by our static analysis tool.
Signed-off-by: Chenyuan Mi <cymi20@fudan.edu.cn>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: linux-kernel@vger.kernel.org
Link: https://lore.kernel.org/r/20230614150118.115208-1-cymi20@fudan.edu.cn
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Diffstat (limited to 'tools/lib/subcmd')
| -rw-r--r-- | tools/lib/subcmd/help.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/lib/subcmd/help.c b/tools/lib/subcmd/help.c index a66fb1a1a312..67a8d6b740ea 100644 --- a/tools/lib/subcmd/help.c +++ b/tools/lib/subcmd/help.c @@ -16,6 +16,8 @@ void add_cmdname(struct cmdnames *cmds, const char *name, size_t len) { struct cmdname *ent = malloc(sizeof(*ent) + len + 1); + if (!ent) + return; ent->len = len; memcpy(ent->name, name, len); |