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Message-ID: <20240324234638.1355609-136-sashal@kernel.org>
Date: Sun, 24 Mar 2024 19:45:48 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
stable@...r.kernel.org
Cc: Zhipeng Lu <alexious@....edu.cn>,
Hans Verkuil <hverkuil-cisco@...all.nl>,
Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.4 135/183] media: go7007: fix a memleak in go7007_load_encoder
From: Zhipeng Lu <alexious@....edu.cn>
[ Upstream commit b9b683844b01d171a72b9c0419a2d760d946ee12 ]
In go7007_load_encoder, bounce(i.e. go->boot_fw), is allocated without
a deallocation thereafter. After the following call chain:
saa7134_go7007_init
|-> go7007_boot_encoder
|-> go7007_load_encoder
|-> kfree(go)
go is freed and thus bounce is leaked.
Fixes: 95ef39403f89 ("[media] go7007: remember boot firmware")
Signed-off-by: Zhipeng Lu <alexious@....edu.cn>
Signed-off-by: Hans Verkuil <hverkuil-cisco@...all.nl>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
drivers/media/usb/go7007/go7007-driver.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/media/usb/go7007/go7007-driver.c b/drivers/media/usb/go7007/go7007-driver.c
index b9302d77d6c83..8ee0d5ea84157 100644
--- a/drivers/media/usb/go7007/go7007-driver.c
+++ b/drivers/media/usb/go7007/go7007-driver.c
@@ -80,7 +80,7 @@ static int go7007_load_encoder(struct go7007 *go)
const struct firmware *fw_entry;
char fw_name[] = "go7007/go7007fw.bin";
void *bounce;
- int fw_len, rv = 0;
+ int fw_len;
u16 intr_val, intr_data;
if (go->boot_fw == NULL) {
@@ -109,9 +109,11 @@ static int go7007_load_encoder(struct go7007 *go)
go7007_read_interrupt(go, &intr_val, &intr_data) < 0 ||
(intr_val & ~0x1) != 0x5a5a) {
v4l2_err(go, "error transferring firmware\n");
- rv = -1;
+ kfree(go->boot_fw);
+ go->boot_fw = NULL;
+ return -1;
}
- return rv;
+ return 0;
}
MODULE_FIRMWARE("go7007/go7007fw.bin");
--
2.43.0
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