From 144601f6228de5598f03e693822b60a95c367a17 Mon Sep 17 00:00:00 2001 From: Claudiu Beznea Date: Tue, 30 May 2023 12:39:06 +0300 Subject: clk: vc5: check memory returned by kasprintf() kasprintf() returns a pointer to dynamically allocated memory. Pointer could be NULL in case allocation fails. Check pointer validity. Identified with coccinelle (kmerr.cocci script). Fixes: f491276a5168 ("clk: vc5: Allow Versaclock driver to support multiple instances") Signed-off-by: Claudiu Beznea Link: https://lore.kernel.org/r/20230530093913.1656095-2-claudiu.beznea@microchip.com Reviewed-by: Luca Ceresoli Signed-off-by: Stephen Boyd --- drivers/clk/clk-versaclock5.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) (limited to 'drivers/clk/clk-versaclock5.c') diff --git a/drivers/clk/clk-versaclock5.c b/drivers/clk/clk-versaclock5.c index fa71a57875ce..40fdf2564aa7 100644 --- a/drivers/clk/clk-versaclock5.c +++ b/drivers/clk/clk-versaclock5.c @@ -1028,6 +1028,11 @@ static int vc5_probe(struct i2c_client *client) } init.name = kasprintf(GFP_KERNEL, "%pOFn.mux", client->dev.of_node); + if (!init.name) { + ret = -ENOMEM; + goto err_clk; + } + init.ops = &vc5_mux_ops; init.flags = 0; init.parent_names = parent_names; @@ -1042,6 +1047,10 @@ static int vc5_probe(struct i2c_client *client) memset(&init, 0, sizeof(init)); init.name = kasprintf(GFP_KERNEL, "%pOFn.dbl", client->dev.of_node); + if (!init.name) { + ret = -ENOMEM; + goto err_clk; + } init.ops = &vc5_dbl_ops; init.flags = CLK_SET_RATE_PARENT; init.parent_names = parent_names; @@ -1057,6 +1066,10 @@ static int vc5_probe(struct i2c_client *client) /* Register PFD */ memset(&init, 0, sizeof(init)); init.name = kasprintf(GFP_KERNEL, "%pOFn.pfd", client->dev.of_node); + if (!init.name) { + ret = -ENOMEM; + goto err_clk; + } init.ops = &vc5_pfd_ops; init.flags = CLK_SET_RATE_PARENT; init.parent_names = parent_names; @@ -1074,6 +1087,10 @@ static int vc5_probe(struct i2c_client *client) /* Register PLL */ memset(&init, 0, sizeof(init)); init.name = kasprintf(GFP_KERNEL, "%pOFn.pll", client->dev.of_node); + if (!init.name) { + ret = -ENOMEM; + goto err_clk; + } init.ops = &vc5_pll_ops; init.flags = CLK_SET_RATE_PARENT; init.parent_names = parent_names; @@ -1093,6 +1110,10 @@ static int vc5_probe(struct i2c_client *client) memset(&init, 0, sizeof(init)); init.name = kasprintf(GFP_KERNEL, "%pOFn.fod%d", client->dev.of_node, idx); + if (!init.name) { + ret = -ENOMEM; + goto err_clk; + } init.ops = &vc5_fod_ops; init.flags = CLK_SET_RATE_PARENT; init.parent_names = parent_names; @@ -1111,6 +1132,10 @@ static int vc5_probe(struct i2c_client *client) memset(&init, 0, sizeof(init)); init.name = kasprintf(GFP_KERNEL, "%pOFn.out0_sel_i2cb", client->dev.of_node); + if (!init.name) { + ret = -ENOMEM; + goto err_clk; + } init.ops = &vc5_clk_out_ops; init.flags = CLK_SET_RATE_PARENT; init.parent_names = parent_names; @@ -1137,6 +1162,10 @@ static int vc5_probe(struct i2c_client *client) memset(&init, 0, sizeof(init)); init.name = kasprintf(GFP_KERNEL, "%pOFn.out%d", client->dev.of_node, idx + 1); + if (!init.name) { + ret = -ENOMEM; + goto err_clk; + } init.ops = &vc5_clk_out_ops; init.flags = CLK_SET_RATE_PARENT; init.parent_names = parent_names; -- cgit v1.2.3