linux-kernel - [PATCH] drivers: clk: clk-en7523.c: Initialize num before accessing hws in en7523_register

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20241203142915.345523-1-lihaoyu499@gmail.com>
Date: Tue,  3 Dec 2024 22:29:15 +0800
From: Haoyu Li <lihaoyu499@...il.com>
To: Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...nel.org>,
	Kees Cook <kees@...nel.org>,
	"Gustavo A . R . Silva" <gustavoars@...nel.org>,
	linux-clk@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-hardening@...r.kernel.org
Cc: stable@...r.kernel.org,
	Haoyu Li <lihaoyu499@...il.com>
Subject: [PATCH] drivers: clk: clk-en7523.c: Initialize num before accessing hws in en7523_register_clocks

With the new __counted_by annocation in clk_hw_onecell_data, the "num"
struct member must be set before accessing the "hws" array. Failing to
do so will trigger a runtime warning when enabling CONFIG_UBSAN_BOUNDS
and CONFIG_FORTIFY_SOURCE.

Fixes: f316cdff8d67 ("clk: Annotate struct clk_hw_onecell_data with __counted_by")

Signed-off-by: Haoyu Li <lihaoyu499@...il.com>
---
 drivers/clk/clk-en7523.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/clk/clk-en7523.c b/drivers/clk/clk-en7523.c
index e52c5460e927..61d95ead5ec4 100644
--- a/drivers/clk/clk-en7523.c
+++ b/drivers/clk/clk-en7523.c
@@ -503,6 +503,8 @@ static void en7523_register_clocks(struct device *dev, struct clk_hw_onecell_dat
 	u32 rate;
 	int i;
 
+	clk_data->num = EN7523_NUM_CLOCKS;
+
 	for (i = 0; i < ARRAY_SIZE(en7523_base_clks); i++) {
 		const struct en_clk_desc *desc = &en7523_base_clks[i];
 		u32 reg = desc->div_reg ? desc->div_reg : desc->base_reg;
@@ -524,8 +526,6 @@ static void en7523_register_clocks(struct device *dev, struct clk_hw_onecell_dat
 
 	hw = en7523_register_pcie_clk(dev, np_base);
 	clk_data->hws[EN7523_CLK_PCIE] = hw;
-
-	clk_data->num = EN7523_NUM_CLOCKS;
 }
 
 static int en7523_clk_hw_init(struct platform_device *pdev,
-- 
2.34.1