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| author | Zhipeng Lu <alexious@zju.edu.cn> | 2023-12-01 16:22:55 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-01-26 01:33:36 +0300 |
| commit | 68d7d5923f8a2f03193b27297252d0e7cc7045fc (patch) | |
| tree | 89f8e057c4f86e9eace3a58364957244063d86a3 | |
| parent | afb2be8f4279799aee6f2451287bd6f594b2e1cd (diff) | |
| download | linux-68d7d5923f8a2f03193b27297252d0e7cc7045fc.tar.xz | |
media: cx231xx: fix a memleak in cx231xx_init_isoc
[ Upstream commit 5d3c8990e2bbf929cb211563dadd70708f42e4e6 ]
The dma_q->p_left_data alloced by kzalloc should be freed in all the
following error handling paths. However, it hasn't been freed in the
allocation error paths of dev->video_mode.isoc_ctl.urb and
dev->video_mode.isoc_ctl.transfer_buffer.
On the other hand, the dma_q->p_left_data did be freed in the
error-handling paths after that of dev->video_mode.isoc_ctl.urb and
dev->video_mode.isoc_ctl.transfer_buffer, by calling
cx231xx_uninit_isoc(dev). So the same free operation should be done in
error-handling paths of those two allocation.
Fixes: 64fbf4445526 ("[media] cx231xx: Added support for Carraera, Shelby, RDx_253S and VIDEO_GRABBER")
Signed-off-by: Zhipeng Lu <alexious@zju.edu.cn>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/media/usb/cx231xx/cx231xx-core.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/media/usb/cx231xx/cx231xx-core.c b/drivers/media/usb/cx231xx/cx231xx-core.c index 493c2dca6244..cd60473a981c 100644 --- a/drivers/media/usb/cx231xx/cx231xx-core.c +++ b/drivers/media/usb/cx231xx/cx231xx-core.c @@ -1040,6 +1040,7 @@ int cx231xx_init_isoc(struct cx231xx *dev, int max_packets, if (!dev->video_mode.isoc_ctl.urb) { dev_err(dev->dev, "cannot alloc memory for usb buffers\n"); + kfree(dma_q->p_left_data); return -ENOMEM; } @@ -1049,6 +1050,7 @@ int cx231xx_init_isoc(struct cx231xx *dev, int max_packets, dev_err(dev->dev, "cannot allocate memory for usbtransfer\n"); kfree(dev->video_mode.isoc_ctl.urb); + kfree(dma_q->p_left_data); return -ENOMEM; } |