linux-kernel - Re: [PATCH] KEYS: encrypted: Add check for strsep

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Message-Id: <CYS7WMFLXNE1.35OBTKTONKNX3@suppilovahvero>
Date: Tue, 30 Jan 2024 19:30:16 +0200
From: "Jarkko Sakkinen" <jarkko@...nel.org>
To: "Jarkko Sakkinen" <jarkko@...nel.org>, "Verma, Vishal L"
 <vishal.l.verma@...el.com>, "zohar@...ux.ibm.com" <zohar@...ux.ibm.com>,
 "paul@...l-moore.com" <paul@...l-moore.com>, "dhowells@...hat.com"
 <dhowells@...hat.com>, "yaelt@...gle.com" <yaelt@...gle.com>,
 "serge@...lyn.com" <serge@...lyn.com>, "nichen@...as.ac.cn"
 <nichen@...as.ac.cn>, "sumit.garg@...aro.org" <sumit.garg@...aro.org>,
 "jmorris@...ei.org" <jmorris@...ei.org>
Cc: "Jiang, Dave" <dave.jiang@...el.com>, "linux-integrity@...r.kernel.org"
 <linux-integrity@...r.kernel.org>, "linux-cxl@...r.kernel.org"
 <linux-cxl@...r.kernel.org>, "linux-kernel@...r.kernel.org"
 <linux-kernel@...r.kernel.org>, "Williams, Dan J"
 <dan.j.williams@...el.com>, "keyrings@...r.kernel.org"
 <keyrings@...r.kernel.org>, "linux-security-module@...r.kernel.org"
 <linux-security-module@...r.kernel.org>, "nvdimm@...ts.linux.dev"
 <nvdimm@...ts.linux.dev>
Subject: Re: [PATCH] KEYS: encrypted: Add check for strsep

On Tue Jan 30, 2024 at 7:22 PM EET, Jarkko Sakkinen wrote:
> On Wed Jan 24, 2024 at 11:10 PM EET, Verma, Vishal L wrote:
> > On Wed, 2024-01-24 at 15:40 -0500, Mimi Zohar wrote:
> > > On Wed, 2024-01-24 at 20:10 +0000, Verma, Vishal L wrote:
> > > > > 
> > > > Ah, thanks for confirming! Would you like me to send a revert patch or
> > > > will you do it?
> > > 
> > > Revert "KEYS: encrypted: Add check for strsep"
> > >     
> > > This reverts commit b4af096b5df5dd131ab796c79cedc7069d8f4882.
> > >     
> > > New encrypted keys are created either from kernel-generated random
> > > numbers or user-provided decrypted data.  Revert the change requiring
> > > user-provided decrypted data.
> > > 
> > > 
> > > Can I add your Reported-by?
> >
> > Yes that works, Thank you.
>
> This went totally wrong IMHO.
>
> Priority should be to locate and fix the bug not revert useful stuff
> when a bug is found that has limited scope.

By guidelines here the commit is also a bug fix and reverting
such commit means seeding a bug to the mainline. Also the klog
message alone is a bug fix here. So also by book it really has
to come back as it was already commit because we cannot
knowingly mount bugs to the mainline, right?

BR, Jarkko