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From: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
To: Waiman Long <longman@redhat.com>
Cc: David Howells <dhowells@redhat.com>,
	James Morris <jmorris@namei.org>,
	"Serge E. Hallyn" <serge@hallyn.com>,
	Mimi Zohar <zohar@linux.ibm.com>,
	"David S. Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>,
	keyrings@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-security-module@vger.kernel.org,
	linux-integrity@vger.kernel.org, netdev@vger.kernel.org,
	linux-afs@lists.infradead.org, Sumit Garg <sumit.garg@linaro.org>,
	Jerry Snitselaar <jsnitsel@redhat.com>,
	Roberto Sassu <roberto.sassu@huawei.com>,
	Eric Biggers <ebiggers@google.com>,
	Chris von Recklinghausen <crecklin@redhat.com>
Subject: Re: [PATCH v6 2/2] KEYS: Avoid false positive ENOMEM error on key read
Date: Sat, 21 Mar 2020 00:21:13 +0200	[thread overview]
Message-ID: <20200320222113.GB5284@linux.intel.com> (raw)
In-Reply-To: <20200320221918.GA5284@linux.intel.com>

On Sat, Mar 21, 2020 at 12:19:27AM +0200, Jarkko Sakkinen wrote:
> Would move this label before condition instead of jumping inside the
> nested block since it will always evaluate correctly.
> 
> To this version haven't really gotten why you don't use a legit loop
> construct but instead jump from one random nested location to another
> random nested location? This construct will be somewhat nasty to
> maintain. The construct is weird enough that you should have rather
> good explanation in the long description why such a mess.

What I'm saying that if I fix a bug, the first version of the fix
would probably look something like this is right now. They I think
how to write it right. We don't want fixes that just happen to work.
Right now I'm worried to take this in since I'm not confident that
I haven't some possible corner case, or might still have gotten
something just plain wrong.

/Jarkko

  reply	other threads:[~2020-03-20 22:21 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-20 19:19 [PATCH v6 0/2] KEYS: Read keys to internal buffer & then copy to userspace Waiman Long
2020-03-20 19:19 ` [PATCH v6 1/2] KEYS: Don't write out to userspace while holding key semaphore Waiman Long
2020-03-20 19:19 ` [PATCH v6 2/2] KEYS: Avoid false positive ENOMEM error on key read Waiman Long
2020-03-20 22:19   ` Jarkko Sakkinen
2020-03-20 22:21     ` Jarkko Sakkinen [this message]
2020-03-21  1:51     ` Waiman Long

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