| Message ID | 20220928062301.6399-1-niejianglei2021@163.com |
|---|---|
| State | New |
| Headers | show |
| Series | staging: fbtft: core: fix potential memory leak in fbtft_probe_common() | expand |
On Wed, Sep 28, 2022 at 02:23:01PM +0800, Jianglei Nie wrote: > fbtft_probe_common() allocates a memory chunk for "info" with > fbtft_framebuffer_alloc(). When "display->buswidth == 0" is true, the > function returns without releasing the "info", which will lead to a > memory leak. > > Fix it by calling fbtft_framebuffer_release() when "display->buswidth > == 0" is true. Fixes tag? ... > if (display->buswidth == 0) { > dev_err(dev, "buswidth is not set\n"); > + fbtft_framebuffer_release(info); > return -EINVAL; ret = dev_err_probe(dev, -EINVAL, "buswidth is not set\n"); goto out_release; > }
diff --git a/drivers/staging/fbtft/fbtft-core.c b/drivers/staging/fbtft/fbtft-core.c index afaba94d1d1c..ecf595aff786 100644 --- a/drivers/staging/fbtft/fbtft-core.c +++ b/drivers/staging/fbtft/fbtft-core.c @@ -1225,6 +1225,7 @@ int fbtft_probe_common(struct fbtft_display *display, if (display->buswidth == 0) { dev_err(dev, "buswidth is not set\n"); + fbtft_framebuffer_release(info); return -EINVAL; }
fbtft_probe_common() allocates a memory chunk for "info" with fbtft_framebuffer_alloc(). When "display->buswidth == 0" is true, the function returns without releasing the "info", which will lead to a memory leak. Fix it by calling fbtft_framebuffer_release() when "display->buswidth == 0" is true. Signed-off-by: Jianglei Nie <niejianglei2021@163.com> --- drivers/staging/fbtft/fbtft-core.c | 1 + 1 file changed, 1 insertion(+)