Linux-Crypto Archive on lore.kernel.org
 help / color / Atom feed
From: Yang Shen <shenyang39@huawei.com>
To: <herbert@gondor.apana.org.au>, <davem@davemloft.net>
Cc: <linux-crypto@vger.kernel.org>, <xuzaibo@huawei.com>,
	<wangzhou1@hisilicon.com>
Subject: [PATCH 1/9] crypto: hisilicon/qm - fix wrong release after using strsep
Date: Mon, 29 Jun 2020 19:09:00 +0800
Message-ID: <1593428948-64634-2-git-send-email-shenyang39@huawei.com> (raw)
In-Reply-To: <1593428948-64634-1-git-send-email-shenyang39@huawei.com>

From: Sihang Chen <chensihang1@hisilicon.com>

Save the string address before pass to strsep, release it at end.
Because strsep will update the string address to point after the
token.

Fixes: c31dc9fe165d("crypto: hisilicon/qm - add DebugFS for xQC and...")
Signed-off-by: Sihang Chen <chensihang1@huawei.com>
Signed-off-by: Shukun Tan <tanshukun1@huawei.com>
---
 drivers/crypto/hisilicon/qm.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/crypto/hisilicon/qm.c b/drivers/crypto/hisilicon/qm.c
index 9bb263c..ad0adcc 100644
--- a/drivers/crypto/hisilicon/qm.c
+++ b/drivers/crypto/hisilicon/qm.c
@@ -1429,16 +1429,17 @@ static int qm_dbg_help(struct hisi_qm *qm, char *s)
 static int qm_cmd_write_dump(struct hisi_qm *qm, const char *cmd_buf)
 {
 	struct device *dev = &qm->pdev->dev;
-	char *presult, *s;
+	char *presult, *s, *s_tmp;
 	int ret;
 
 	s = kstrdup(cmd_buf, GFP_KERNEL);
 	if (!s)
 		return -ENOMEM;
 
+	s_tmp = s;
 	presult = strsep(&s, " ");
 	if (!presult) {
-		kfree(s);
+		kfree(s_tmp);
 		return -EINVAL;
 	}
 
@@ -1468,7 +1469,7 @@ static int qm_cmd_write_dump(struct hisi_qm *qm, const char *cmd_buf)
 	if (ret)
 		dev_info(dev, "Please echo help\n");
 
-	kfree(s);
+	kfree(s_tmp);
 
 	return ret;
 }
-- 
2.7.4


  reply index

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-29 11:08 [PATCH 0/9] crypto: hisilicon/qm - misc fixes Yang Shen
2020-06-29 11:09 ` Yang Shen [this message]
2020-07-01  7:01   ` [PATCH 1/9] crypto: hisilicon/qm - fix wrong release after using strsep shenyang (M)
2020-06-29 11:09 ` [PATCH 2/9] crypto: hisilicon/qm - clear used reference count when start qp Yang Shen
2020-06-29 11:09 ` [PATCH 3/9] crypto: hisilicon/qm - fix print frequence in hisi_qp_send Yang Shen
2020-06-29 11:09 ` [PATCH 4/9] crypto: hisilicon/qm - fix judgement of queue is full Yang Shen
2020-06-29 11:09 ` [PATCH 5/9] crypto: hisilicon/qm - fix event queue depth to 2048 Yang Shen
2020-06-29 11:09 ` [PATCH 6/9] crypto: hisilicon/qm - fix no stop reason when use hisi_qm_stop Yang Shen
2020-06-29 11:09 ` [PATCH 7/9] crypto: hisilicon/qm - fix VF not available after PF FLR Yang Shen
2020-06-29 11:09 ` [PATCH 8/9] crypto: hisilicon/qm - fix the process of register algorithms to crypto Yang Shen
2020-06-29 11:09 ` [PATCH 9/9] crypto: hisilicon/qm - register callback function to 'pci_driver.shutdown' Yang Shen

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1593428948-64634-2-git-send-email-shenyang39@huawei.com \
    --to=shenyang39@huawei.com \
    --cc=davem@davemloft.net \
    --cc=herbert@gondor.apana.org.au \
    --cc=linux-crypto@vger.kernel.org \
    --cc=wangzhou1@hisilicon.com \
    --cc=xuzaibo@huawei.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-Crypto Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-crypto/0 linux-crypto/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-crypto linux-crypto/ https://lore.kernel.org/linux-crypto \
		linux-crypto@vger.kernel.org
	public-inbox-index linux-crypto

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-crypto


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git