linux-kernel - Re: memory leak in posix_clock

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Message-ID: <87frwtm7ws.ffs@tglx>
Date: Thu, 14 Mar 2024 11:20:35 +0100
From: Thomas Gleixner <tglx@...utronix.de>
To: Z qiang <qiang.zhang1211@...il.com>, 柳菁峰
 <liujingfeng@...nxin.com>
Cc: "richardcochran@...il.com" <richardcochran@...il.com>,
 "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
 "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
 "syzkaller@...glegroups.com" <syzkaller@...glegroups.com>,
 "secalert@...hat.com" <secalert@...hat.com>
Subject: Re: memory leak in posix_clock_open

On Mon, Mar 11 2024 at 17:46, Z qiang wrote:
>
> diff --git a/kernel/time/posix-clock.c b/kernel/time/posix-clock.c
> index 9de66bbbb3d1..71d9d8c394fa 100644
> --- a/kernel/time/posix-clock.c
> +++ b/kernel/time/posix-clock.c
> @@ -137,6 +137,8 @@ static int posix_clock_open(struct inode *inode,
> struct file *fp)
>
>         if (!err) {
>                 get_device(clk->dev);
> +       } else {
> +               kfree(pccontext);
>         }
>  out:
>         up_read(&clk->rwsem);

Looks about right. Can you please send a proper patch?