linux-kernel - Re: [PATCH 5/6] pgo: modules Fixup memory leak.

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Date:   Mon, 31 May 2021 11:20:24 -0700
From:   Nathan Chancellor <nathan@...nel.org>
To:     Jarmo Tiitto <jarmo.tiitto@...il.com>
Cc:     samitolvanen@...gle.com, wcw@...gle.com, ndesaulniers@...gle.com,
        linux-kernel@...r.kernel.org, clang-built-linux@...glegroups.com
Subject: Re: [PATCH 5/6] pgo: modules Fixup memory leak.

On Fri, May 28, 2021 at 11:11:07PM +0300, Jarmo Tiitto wrote:
> Signed-off-by: Jarmo Tiitto <jarmo.tiitto@...il.com>

Similar comment to 6/6, squash this into 3/6.

> ---
>  kernel/pgo/fs_mod.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/kernel/pgo/fs_mod.c b/kernel/pgo/fs_mod.c
> index 0808d44227f1..2d1ff99e7982 100644
> --- a/kernel/pgo/fs_mod.c
> +++ b/kernel/pgo/fs_mod.c
> @@ -261,6 +261,8 @@ static int prf_module_open(struct inode *inode, struct file *file)
>  
>  				if (!pinfo->buffer) {
>  					err = -ENOMEM;
> +					kfree(pinfo);
> +					module_put(mod);
>  					goto out;
>  				}
>  			}
> @@ -373,7 +375,7 @@ static int pgo_module_notifier(struct notifier_block *nb, unsigned long event,
>  			if (strcmp(data->mod->name, mod->name) == 0) {
>  
>  				mutex_lock(&prf_mod_lock);
> -				/* remofe from profiled modules */
> +				/* remove from profiled modules */
>  				list_del_rcu(&data->link);
>  				/* mark it stale */
>  				WRITE_ONCE(data->mod, NULL);
> -- 
> 2.31.1