This is a note to let you know that I've just added the patch titled
drm/msm/disp: check the return value of kzalloc()
to the 5.17-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-msm-disp-check-the-return-value-of-kzalloc.patch
and it can be found in the queue-5.17 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 85b31fecef634c52690685206bf4a767c0449e3f
Author: Xiaoke Wang <xkernel.wang@xxxxxxxxxxx>
Date: Thu Mar 24 17:15:08 2022 +0800
drm/msm/disp: check the return value of kzalloc()
[ Upstream commit f75e582b0c3ee8f0bddc2248cc8b9175f29c5937 ]
kzalloc() is a memory allocation function which can return NULL when
some internal memory errors happen. So it is better to check it to
prevent potential wrong memory access.
Signed-off-by: Xiaoke Wang <xkernel.wang@xxxxxxxxxxx>
Reviewed-by: Abhinav Kumar <quic_abhinavk@xxxxxxxxxxx>
Link: https://lore.kernel.org/r/tencent_B3E19486FF39415098B572B7397C2936C309@xxxxxx
Signed-off-by: Rob Clark <robdclark@xxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/msm/disp/msm_disp_snapshot_util.c b/drivers/gpu/drm/msm/disp/msm_disp_snapshot_util.c
index 5d2ff6791058..acfe1b31e079 100644
--- a/drivers/gpu/drm/msm/disp/msm_disp_snapshot_util.c
+++ b/drivers/gpu/drm/msm/disp/msm_disp_snapshot_util.c
@@ -176,6 +176,8 @@ void msm_disp_snapshot_add_block(struct msm_disp_state *disp_state, u32 len,
va_list va;
new_blk = kzalloc(sizeof(struct msm_disp_state_block), GFP_KERNEL);
+ if (!new_blk)
+ return;
va_start(va, fmt);
