From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Sasha Levin <sashal@kernel.org>,
netdev@vger.kernel.org, linux-wireless@vger.kernel.org,
ath10k@lists.infradead.org,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Niklas Cassel <niklas.cassel@linaro.org>,
Kalle Valo <kvalo@codeaurora.org>
Subject: [PATCH AUTOSEL 4.19 054/177] ath10k: Correct error handling of dma_map_single()
Date: Tue, 10 Dec 2019 16:30:18 -0500 [thread overview]
Message-ID: <20191210213221.11921-54-sashal@kernel.org> (raw)
In-Reply-To: <20191210213221.11921-1-sashal@kernel.org>
From: Bjorn Andersson <bjorn.andersson@linaro.org>
[ Upstream commit d43810b2c1808ac865aa1a2a2c291644bf95345c ]
The return value of dma_map_single() should be checked for errors using
dma_mapping_error() and the skb has been dequeued so it needs to be
freed.
This was found when enabling CONFIG_DMA_API_DEBUG and it warned about the
missing dma_mapping_error() call.
Fixes: 1807da49733e ("ath10k: wmi: add management tx by reference support over wmi")
Reported-by: Niklas Cassel <niklas.cassel@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/ath/ath10k/mac.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c
index 174e0ce31c42b..448e3a8c33a6d 100644
--- a/drivers/net/wireless/ath/ath10k/mac.c
+++ b/drivers/net/wireless/ath/ath10k/mac.c
@@ -3844,8 +3844,10 @@ void ath10k_mgmt_over_wmi_tx_work(struct work_struct *work)
ar->running_fw->fw_file.fw_features)) {
paddr = dma_map_single(ar->dev, skb->data,
skb->len, DMA_TO_DEVICE);
- if (!paddr)
+ if (dma_mapping_error(ar->dev, paddr)) {
+ ieee80211_free_txskb(ar->hw, skb);
continue;
+ }
ret = ath10k_wmi_mgmt_tx_send(ar, skb, paddr);
if (ret) {
ath10k_warn(ar, "failed to transmit management frame by ref via WMI: %d\n",
--
2.20.1
_______________________________________________
ath10k mailing list
ath10k@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/ath10k
next prev parent reply other threads:[~2019-12-10 21:33 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20191210213221.11921-1-sashal@kernel.org>
2019-12-10 21:29 ` [PATCH AUTOSEL 4.19 013/177] ath10k: fix backtrace on coredump Sasha Levin
2019-12-10 21:29 ` [PATCH AUTOSEL 4.19 023/177] ath10k: fix offchannel tx failure when no ath10k_mac_tx_frm_has_freq Sasha Levin
2019-12-10 21:30 ` Sasha Levin [this message]
2019-12-10 21:31 ` [PATCH AUTOSEL 4.19 127/177] ath10k: fix get invalid tx rate for Mesh metric Sasha Levin
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=20191210213221.11921-54-sashal@kernel.org \
--to=sashal@kernel.org \
--cc=ath10k@lists.infradead.org \
--cc=bjorn.andersson@linaro.org \
--cc=kvalo@codeaurora.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-wireless@vger.kernel.org \
--cc=netdev@vger.kernel.org \
--cc=niklas.cassel@linaro.org \
--cc=stable@vger.kernel.org \
/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
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox