From: Jerome Pouiller <Jerome.Pouiller@silabs.com>
To: devel@driverdev.osuosl.org, linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
"Kalle Valo" <kvalo@codeaurora.org>,
"David S . Miller" <davem@davemloft.net>,
"Dan Carpenter" <dan.carpenter@oracle.com>,
"Jérôme Pouiller" <jerome.pouiller@silabs.com>
Subject: [PATCH 2/8] staging: wfx: check memory allocation
Date: Fri, 9 Oct 2020 19:13:01 +0200 [thread overview]
Message-ID: <20201009171307.864608-3-Jerome.Pouiller@silabs.com> (raw)
In-Reply-To: <20201009171307.864608-1-Jerome.Pouiller@silabs.com>
From: Jérôme Pouiller <jerome.pouiller@silabs.com>
Smatch complains:
main.c:228 wfx_send_pdata_pds() warn: potential NULL parameter dereference 'tmp_buf'
227 tmp_buf = kmemdup(pds->data, pds->size, GFP_KERNEL);
228 ret = wfx_send_pds(wdev, tmp_buf, pds->size);
^^^^^^^
229 kfree(tmp_buf);
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
---
drivers/staging/wfx/main.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/staging/wfx/main.c b/drivers/staging/wfx/main.c
index df11c091e094..a8dc2c033410 100644
--- a/drivers/staging/wfx/main.c
+++ b/drivers/staging/wfx/main.c
@@ -222,12 +222,18 @@ static int wfx_send_pdata_pds(struct wfx_dev *wdev)
if (ret) {
dev_err(wdev->dev, "can't load PDS file %s\n",
wdev->pdata.file_pds);
- return ret;
+ goto err1;
}
tmp_buf = kmemdup(pds->data, pds->size, GFP_KERNEL);
+ if (!tmp_buf) {
+ ret = -ENOMEM;
+ goto err2;
+ }
ret = wfx_send_pds(wdev, tmp_buf, pds->size);
kfree(tmp_buf);
+err2:
release_firmware(pds);
+err1:
return ret;
}
--
2.28.0
next prev parent reply other threads:[~2020-10-09 17:13 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-09 17:12 [PATCH 0/8] staging: wfx: fix issues reported by Smatch Jerome Pouiller
2020-10-09 17:13 ` [PATCH 1/8] staging: wfx: improve error handling of hif_join() Jerome Pouiller
2020-10-09 17:13 ` Jerome Pouiller [this message]
2020-10-09 18:51 ` [PATCH 2/8] staging: wfx: check memory allocation Kalle Valo
2020-10-10 12:07 ` Jérôme Pouiller
2020-10-10 13:18 ` Dan Carpenter
2020-10-10 13:54 ` Dan Carpenter
2020-10-09 17:13 ` [PATCH 3/8] staging: wfx: standardize the error when vif does not exist Jerome Pouiller
2020-10-09 18:52 ` Kalle Valo
2020-10-10 12:22 ` Jérôme Pouiller
2020-10-10 12:40 ` Greg Kroah-Hartman
2020-10-10 13:29 ` Jérôme Pouiller
2020-10-09 17:13 ` [PATCH 4/8] staging: wfx: wfx_init_common() returns NULL on error Jerome Pouiller
2020-10-09 17:13 ` [PATCH 5/8] staging: wfx: increase robustness of hif_generic_confirm() Jerome Pouiller
2020-10-09 17:13 ` [PATCH 6/8] staging: wfx: gpiod_get_value() can return an error Jerome Pouiller
2020-10-09 17:13 ` [PATCH 7/8] staging: wfx: drop unicode characters from strings Jerome Pouiller
2020-10-09 17:13 ` [PATCH 8/8] staging: wfx: improve robustness of wfx_get_hw_rate() Jerome Pouiller
2020-10-16 1:50 ` Nathan Chancellor
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