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From: Fedor Pchelkin <pchelkin@ispras.ru>
To: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Cc: Fedor Pchelkin <pchelkin@ispras.ru>,
	Jeffrey Hugo <quic_jhugo@quicinc.com>,
	Kalle Valo <quic_kvalo@quicinc.com>,
	Carl Vanderlip <quic_carlv@quicinc.com>,
	Sujeev Dias <sdias@codeaurora.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Siddartha Mohanadoss <smohanad@codeaurora.org>,
	mhi@lists.linux.dev,
	linux-arm-msm@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	Alexey Khoroshilov <khoroshilov@ispras.ru>,
	lvc-project@linuxtesting.org,
	stable@vger.kernel.org
Subject: [PATCH v2] bus: mhi: host: free buffer on error in mhi_alloc_bhie_table
Date: Wed,  7 Feb 2024 16:40:05 +0300
Message-Id: <20240207134005.7515-1-pchelkin@ispras.ru>
In-Reply-To: <2024020709-familiar-slapping-a96a@gregkh>
References: 
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img_info->mhi_buf should be freed on error path in mhi_alloc_bhie_table().
This error case is rare but still needs to be fixed.

Found by Linux Verification Center (linuxtesting.org).

Fixes: 3000f85b8f47 ("bus: mhi: core: Add support for basic PM operations")
Cc: stable@vger.kernel.org
Signed-off-by: Fedor Pchelkin <pchelkin@ispras.ru>
---
v2: add missing Cc: stable, as Greg Kroah-Hartman's bot reported

 drivers/bus/mhi/host/boot.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/bus/mhi/host/boot.c b/drivers/bus/mhi/host/boot.c
index edc0ec5a0933..738dcd11b66f 100644
--- a/drivers/bus/mhi/host/boot.c
+++ b/drivers/bus/mhi/host/boot.c
@@ -357,6 +357,7 @@ int mhi_alloc_bhie_table(struct mhi_controller *mhi_cntrl,
 	for (--i, --mhi_buf; i >= 0; i--, mhi_buf--)
 		dma_free_coherent(mhi_cntrl->cntrl_dev, mhi_buf->len,
 				  mhi_buf->buf, mhi_buf->dma_addr);
+	kfree(img_info->mhi_buf);
 
 error_alloc_mhi_buf:
 	kfree(img_info);
-- 
2.39.2