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drm/crc-debugfs: Fix memleak in crc_control_write 

When verify_crc_source() fails, source needs to be freed.
However, current code is returning directly and ends up
leaking memory.

Fixes: d5cc15a0c6 ("drm: crc: Introduce verify_crc_source callback")
Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
[danvet: change Fixes: tag per Laurent's review]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20200819082228.26847-1-dinghao.liu@zju.edu.cn
zero-sugar-mainline-defconfig
Dinghao Liu 2020-08-19 16:22:28 +08:00 committed by Daniel Vetter
parent bfacb84993
commit f7ec68b341
1 changed files with 3 additions and 1 deletions
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4
drivers/gpu/drm/drm_debugfs_crc.c
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@ -144,8 +144,10 @@ static ssize_t crc_control_write(struct file *file, const char __user *ubuf,
source[len - 1] = '\0';
ret = crtc->funcs->verify_crc_source(crtc, source, &values_cnt);
if (ret)
if (ret) {
kfree(source);
return ret;
}
spin_lock_irq(&crc->lock);