linux-kernel - Re: Regression in 32-bit-compat TIOCGPTPEER ioctl due to 311fc65c9fb9c966bca8e6f3ff8132ce57344ab9

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Message-ID: <20190117114610.GB2430@kroah.com>
Date:   Thu, 17 Jan 2019 12:46:10 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Robert O'Callahan <robert@...llahan.org>
Cc:     "Eric W. Biederman" <ebiederm@...ssion.com>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: Regression in 32-bit-compat TIOCGPTPEER ioctl due to
 311fc65c9fb9c966bca8e6f3ff8132ce57344ab9

On Wed, Jan 16, 2019 at 08:36:49AM +1300, Robert O'Callahan wrote:
> On Tue, Jan 15, 2019 at 8:25 PM Eric W. Biederman <ebiederm@...ssion.com> wrote:
> > Can you confirm this fixes it for you?
> 
> Sorry --- I made a mistake. It looks like this is already fixed on
> master, by commit e21120383f2dce32312f63ffca145ff8a87d41f5 (though I
> don't think Al Viro knew he was fixing this bug). So, nothing to do
> here.

As you found a regression from 4.13 - 4.19, shouldn't we backport some
fix to the 4.14 and 4.19 kernels for this?

thanks,

greg k-h