linux-kernel - Re: [PATCH-net-next] ptp: fix corrupted list in ptp

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Message-ID: <ZT65J4mvFe1yx5_3@hoboy.vegasvil.org>
Date:   Sun, 29 Oct 2023 12:57:27 -0700
From:   Richard Cochran <richardcochran@...il.com>
To:     Edward Adam Davis <eadavis@...com>
Cc:     davem@...emloft.net, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, reibax@...il.com,
        syzbot+df3f3ef31f60781fa911@...kaller.appspotmail.com,
        syzkaller-bugs@...glegroups.com
Subject: Re: [PATCH-net-next] ptp: fix corrupted list in ptp_open

On Sun, Oct 29, 2023 at 10:09:42AM +0800, Edward Adam Davis wrote:

> @@ -585,7 +596,6 @@ ssize_t ptp_read(struct posix_clock_context *pccontext, uint rdflags,
>  free_event:
>  	kfree(event);
>  exit:
> -	if (result < 0)
> -		ptp_release(pccontext);
> +	mutex_unlock(&ptp->tsevq_mux);
>  	return result;
>  }

This is the only hunk that makes sense.  Keep this, but remove the
rest, just like in your previous patches.

Thanks,
Richard