This is a note to let you know that I've just added the patch titled
drm/crc-debugfs: Fix memleak in crc_control_write
to the 5.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-crc-debugfs-fix-memleak-in-crc_control_write.patch
and it can be found in the queue-5.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 9f0e489c2b16648542cc30f79b9365746ea70ea0
Author: Dinghao Liu <dinghao.liu@xxxxxxxxxx>
Date: Wed Aug 19 16:22:28 2020 +0800
drm/crc-debugfs: Fix memleak in crc_control_write
[ Upstream commit f7ec68b341dbd5da13d4c65ce444dcd605f1c42e ]
When verify_crc_source() fails, source needs to be freed.
However, current code is returning directly and ends up
leaking memory.
Fixes: d5cc15a0c66e ("drm: crc: Introduce verify_crc_source callback")
Signed-off-by: Dinghao Liu <dinghao.liu@xxxxxxxxxx>
Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
[danvet: change Fixes: tag per Laurent's review]
Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20200819082228.26847-1-dinghao.liu@xxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/drm_debugfs_crc.c b/drivers/gpu/drm/drm_debugfs_crc.c
index 5d67a41f7c3a8..3dd70d813f694 100644
--- a/drivers/gpu/drm/drm_debugfs_crc.c
+++ b/drivers/gpu/drm/drm_debugfs_crc.c
@@ -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);
