netdev - Re: [PATCH iproute2 v2 1/2] lib/fs: fix memory leak in get_task

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Message-ID: <527dab8b-6eba-da17-8cef-2614042c9688@kernel.org>
Date:   Mon, 7 Mar 2022 10:58:37 -0700
From:   David Ahern <dsahern@...nel.org>
To:     Andrea Claudi <aclaudi@...hat.com>, netdev@...r.kernel.org
Cc:     stephen@...workplumber.org, markzhang@...dia.com, leonro@...dia.com
Subject: Re: [PATCH iproute2 v2 1/2] lib/fs: fix memory leak in
 get_task_name()

On 3/2/22 5:28 AM, Andrea Claudi wrote:
> diff --git a/include/utils.h b/include/utils.h
> index b6c468e9..81294488 100644
> --- a/include/utils.h
> +++ b/include/utils.h
> @@ -307,7 +307,7 @@ char *find_cgroup2_mount(bool do_mount);
>  __u64 get_cgroup2_id(const char *path);
>  char *get_cgroup2_path(__u64 id, bool full);
>  int get_command_name(const char *pid, char *comm, size_t len);
> -char *get_task_name(pid_t pid);
> +int get_task_name(pid_t pid, char *name);
>  

changing to an API with an assumed length is not better than the current
situation. Why not just fixup the callers as needed to free the allocation?