From ed713e2bc093239ccd380c2ce8ae9e4162f5c037 Mon Sep 17 00:00:00 2001
From: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Date: Thu, 10 Mar 2022 16:02:57 +0800
Subject: [PATCH] clk: imx: Add check for kcalloc
Git-commit: ed713e2bc093239ccd380c2ce8ae9e4162f5c037
Patch-mainline: v5.19-rc1
References: CVE-2022-3114 bsc#1206391 git-fixes
As the potential failure of the kcalloc(),
it should be better to check it in order to
avoid the dereference of the NULL pointer.
Fixes: 379c9a24cc23 ("clk: imx: Fix reparenting of UARTs not associated with stdout")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Reviewed-by: Abel Vesa <abel.vesa@nxp.com>
Link: https://lore.kernel.org/r/20220310080257.1988412-1-jiasheng@iscas.ac.cn
Signed-off-by: Abel Vesa <abel.vesa@nxp.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/clk/imx/clk.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/clk/imx/clk.c b/drivers/clk/imx/clk.c
index 4bd6ad060eea..5582f18dd632 100644
--- a/drivers/clk/imx/clk.c
+++ b/drivers/clk/imx/clk.c
@@ -176,6 +176,8 @@ void imx_register_uart_clocks(unsigned int clk_count)
int i;
imx_uart_clocks = kcalloc(clk_count, sizeof(struct clk *), GFP_KERNEL);
+ if (!imx_uart_clocks)
+ return;
if (!of_stdout)
return;
--
2.35.3