Prepare for the coming implementation by GCC and Clang of the __counted_by
attribute. Flexible array members annotated with __counted_by can have
their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS
(for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family
functions).
As found with Coccinelle[1], add __counted_by for struct clk_hw_onecell_data.
Additionally, since the element count member must be set before accessing
the annotated flexible array member, move its initialization earlier.
[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@kernel.org>
Cc: Joel Stanley <joel@jms.id.au>
Cc: Andrew Jeffery <andrew@aj.id.au>
Cc: Taichi Sugaya <sugaya.taichi@socionext.com>
Cc: Takao Orito <orito.takao@socionext.com>
Cc: Qin Jian <qinjian@cqplus1.com>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Gregory Clement <gregory.clement@bootlin.com>
Cc: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Cc: Andy Gross <agross@kernel.org>
Cc: Bjorn Andersson <andersson@kernel.org>
Cc: Konrad Dybcio <konrad.dybcio@linaro.org>
Cc: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Chen-Yu Tsai <wens@csie.org>
Cc: Jernej Skrabec <jernej.skrabec@gmail.com>
Cc: David Airlie <airlied@gmail.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Samuel Holland <samuel@sholland.org>
Cc: Vinod Koul <vkoul@kernel.org>
Cc: Kishon Vijay Abraham I <kishon@kernel.org>
Cc: linux-clk@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-aspeed@lists.ozlabs.org
Cc: linux-arm-msm@vger.kernel.org
Cc: linux-mediatek@lists.infradead.org
Cc: dri-devel@lists.freedesktop.org
Cc: linux-sunxi@lists.linux.dev
Cc: linux-phy@lists.infradead.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20230817203019.never.795-kees@kernel.org
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
GFP_KERNEL);
if (!aspeed_clk_data)
return;
+ aspeed_clk_data->num = ASPEED_NUM_CLKS;
/*
* This way all clocks fetched before the platform device probes,
aspeed_ast2500_cc(map);
else
pr_err("unknown platform, failed to add clocks\n");
-
- aspeed_clk_data->num = ASPEED_NUM_CLKS;
ret = of_clk_add_hw_provider(np, of_clk_hw_onecell_get, aspeed_clk_data);
if (ret)
pr_err("failed to add DT provider: %d\n", ret);
ASPEED_G6_NUM_CLKS), GFP_KERNEL);
if (!aspeed_g6_clk_data)
return;
+ aspeed_g6_clk_data->num = ASPEED_G6_NUM_CLKS;
/*
* This way all clocks fetched before the platform device probes,
}
aspeed_g6_cc(map);
- aspeed_g6_clk_data->num = ASPEED_G6_NUM_CLKS;
ret = of_clk_add_hw_provider(np, of_clk_hw_onecell_get, aspeed_g6_clk_data);
if (ret)
pr_err("failed to add DT provider: %d\n", ret);
GFP_KERNEL);
if (!gemini_clk_data)
return;
+ gemini_clk_data->num = GEMINI_NUM_CLKS;
/*
* This way all clock fetched before the platform device probes,
gemini_clk_data->hws[GEMINI_CLK_APB] = hw;
/* Register the clocks to be accessed by the device tree */
- gemini_clk_data->num = GEMINI_NUM_CLKS;
of_clk_add_hw_provider(np, of_clk_hw_onecell_get, gemini_clk_data);
}
CLK_OF_DECLARE_DRIVER(gemini_cc, "cortina,gemini-syscon", gemini_cc_init);
if (!m10v_clk_data)
return;
+ m10v_clk_data->num = M10V_NUM_CLKS;
base = of_iomap(np, 0);
if (!base) {
base + CLKSEL(1), 0, 3, 0, rclk_table,
&m10v_crglock, NULL);
m10v_clk_data->hws[M10V_RCLK_ID] = hw;
-
- m10v_clk_data->num = M10V_NUM_CLKS;
of_clk_add_hw_provider(np, of_clk_hw_onecell_get, m10v_clk_data);
}
CLK_OF_DECLARE_DRIVER(m10v_cc, "socionext,milbeaut-m10v-ccu", m10v_cc_init);
GFP_KERNEL);
if (!clk_data)
return -ENOMEM;
+ clk_data->num = CLK_MAX;
hws = clk_data->hws;
pd_ext.index = 0;
return PTR_ERR(hws[i]);
}
- clk_data->num = CLK_MAX;
-
return devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get, clk_data);
}
GFP_KERNEL);
if (!cp110_clk_data)
return -ENOMEM;
+ cp110_clk_data->num = CP110_CLK_NUM;
cp110_clks = cp110_clk_data->hws;
- cp110_clk_data->num = CP110_CLK_NUM;
/* Register the PLL0 which is the root of the hw tree */
pll0_name = ap_cp_unique_name(dev, syscon_node, "pll0");
data = devm_kzalloc(dev, struct_size(data, hws, 2), GFP_KERNEL);
if (!data)
return -ENOMEM;
+ data->num = 2;
base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(base))
data->hws[0] = &pwrcl_pmux.clkr.hw;
data->hws[1] = &perfcl_pmux.clkr.hw;
- data->num = 2;
return devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get, data);
}
GFP_KERNEL);
if (!clk_data)
return -ENOMEM;
+ clk_data->num = count;
for (i = 0; i < ARRAY_SIZE(mt7621_clks_base); i++)
clk_data->hws[i] = mt7621_clk_early[i];
goto unreg_clk_fixed;
}
- clk_data->num = count;
-
ret = devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get, clk_data);
if (ret) {
dev_err(dev, "Couldn't add clk hw provider\n");
GFP_KERNEL);
if (!clk_data)
return -ENOMEM;
+ clk_data->num = CLK_NUM;
tcon_top->clk_data = clk_data;
spin_lock_init(&tcon_top->reg_lock);
goto err_unregister_gates;
}
- clk_data->num = CLK_NUM;
-
ret = of_clk_add_hw_provider(dev->of_node, of_clk_hw_onecell_get,
clk_data);
if (ret)
data = devm_kzalloc(edp->dev, struct_size(data, hws, 2), GFP_KERNEL);
if (!data)
return -ENOMEM;
+ data->num = 2;
snprintf(name, sizeof(name), "%s::link_clk", dev_name(edp->dev));
init.ops = &qcom_edp_dp_link_clk_ops;
data->hws[0] = &edp->dp_link_hw;
data->hws[1] = &edp->dp_pixel_hw;
- data->num = 2;
return devm_of_clk_add_hw_provider(edp->dev, of_clk_hw_onecell_get, data);
}
struct clk_hw_onecell_data {
unsigned int num;
- struct clk_hw *hws[];
+ struct clk_hw *hws[] __counted_by(num);
};
#define CLK_OF_DECLARE(name, compat, fn) \