[PATCH AUTOSEL 5.4 015/459] media: meson: add missing allocation failure check on new_buf
From: Sasha Levin <sashal@kernel.org>
Date: 2020-02-14 16:02:26
Also in:
linux-amlogic, linux-media, lkml, stable
Subsystem:
media input infrastructure (v4l/dvb), meson video decoder driver for amlogic socs, staging subsystem, the rest · Maintainers:
Mauro Carvalho Chehab, Neil Armstrong, Greg Kroah-Hartman, Linus Torvalds
From: Colin Ian King <redacted>
[ Upstream commit 11e0e167d071a28288a7a0a211d48c571d19b56f ]
Currently if the allocation of new_buf fails then a null pointer
dereference occurs when assiging new_buf->vb. Avoid this by returning
early on a memory allocation failure as there is not much more can
be done at this point.
Addresses-Coverity: ("Dereference null return")
Fixes: 3e7f51bd9607 ("media: meson: add v4l2 m2m video decoder driver")
Signed-off-by: Colin Ian King <redacted>
Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Hans Verkuil <redacted>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/staging/media/meson/vdec/vdec.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/staging/media/meson/vdec/vdec.c b/drivers/staging/media/meson/vdec/vdec.c
index 0a1a04fd5d13d..8dd1396909d7e 100644
--- a/drivers/staging/media/meson/vdec/vdec.c
+++ b/drivers/staging/media/meson/vdec/vdec.c@@ -133,6 +133,8 @@ vdec_queue_recycle(struct amvdec_session *sess, struct vb2_buffer *vb) struct amvdec_buffer *new_buf; new_buf = kmalloc(sizeof(*new_buf), GFP_KERNEL); + if (!new_buf) + return; new_buf->vb = vb; mutex_lock(&sess->bufs_recycle_lock);
--
2.20.1
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