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From: Waiman Long <longman@redhat.com>
To: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: David Howells <dhowells@redhat.com>,
	Jarkko Sakkinen <jarkko.sakkinen@linux.intel.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 v7 2/2] KEYS: Avoid false positive ENOMEM error on key read
Date: Sat, 21 Mar 2020 20:46:33 -0400	[thread overview]
Message-ID: <03c0c59e-a84b-bd75-6b3f-7f6467d806e2@redhat.com> (raw)
In-Reply-To: <e3d7a227-8915-5c00-cd34-fe2db7fc7121@I-love.SAKURA.ne.jp>

On 3/21/20 8:31 PM, Tetsuo Handa wrote:
> On 2020/03/22 3:49, Waiman Long wrote:
>> +	do {
>> +		if (ret > key_data_len) {
>> +			if (unlikely(key_data))
>> +				__kvzfree(key_data, key_data_len);
>> +			key_data_len = ret;
>> +			continue;	/* Allocate buffer */
> Excuse me, but "continue;" inside "do { ... } while (0);" means "break;"
> because "while (0)" is evaluated before continuing the loop.

You are right. My mistake. Will send out a new one for patch 2.

-Longman



      reply	other threads:[~2020-03-22  0:46 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-21 18:49 [PATCH v7 0/2] KEYS: Read keys to internal buffer & then copy to userspace Waiman Long
2020-03-21 18:49 ` [PATCH v7 1/2] KEYS: Don't write out to userspace while holding key semaphore Waiman Long
2020-03-21 18:49 ` [PATCH v7 2/2] KEYS: Avoid false positive ENOMEM error on key read Waiman Long
2020-03-22  0:31   ` Tetsuo Handa
2020-03-22  0:46     ` Waiman Long [this message]

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