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Message-Id: <20240122172556.3842580-1-alexious@zju.edu.cn>
Date: Tue, 23 Jan 2024 01:25:56 +0800
From: Zhipeng Lu <alexious@....edu.cn>
To: alexious@....edu.cn
Cc: Hans Verkuil <hverkuil-cisco@...all.nl>,
Mauro Carvalho Chehab <mchehab@...nel.org>,
linux-media@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH] media: go7007: fix a memleak in go7007_load_encoder
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>
---
drivers/media/usb/go7007/go7007-driver.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/media/usb/go7007/go7007-driver.c b/drivers/media/usb/go7007/go7007-driver.c
index 0c24e2984304..65d6a63068dc 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 +109,10 @@ 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(bounce);
+ return -1;
}
- return rv;
+ return 0;
}
MODULE_FIRMWARE("go7007/go7007fw.bin");
--
2.34.1
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