回复: [PATCH] clk/x86: pmc_atom: add kasprintf return value check

[晏龙龙]

Sorry, there's another issue with the patch processing; discard it.

 

主   题：[PATCH] clk/x86: pmc_atom: add kasprintf return value check
日   期：2026年07月14日14:51
发件人：longlong yan
收件人：mturquette,sboyd,bmasney,linux-clk,linux-kernel,longlong yan

The kasprintf() function returns NULL on memory allocation failure, but the code in plt_clk_register() was not checking this return value. If kasprintf fails, init.name would be NULL and could cause NULL pointer dereference when clkdev_hw_create() uses it. Add proper error checking for the kasprintf() return value and return ERR_PTR(-ENOMEM) on failure. Fixes: 1141d9d08184 ("clk: x86: Add Atom PMC platform clocks") Signed-off-by: longlong yan <yanlonglong@xxxxxxxxxx> --- drivers/clk/x86/clk-pmc-atom.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/clk/x86/clk-pmc-atom.c b/drivers/clk/x86/clk-pmc-atom.c index 99291ba65da7..08c83e0abc41 100644 --- a/drivers/clk/x86/clk-pmc-atom.c +++ b/drivers/clk/x86/clk-pmc-atom.c @@ -160,6 +160,9 @@ static struct clk_plt *plt_clk_register(struct platform_device *pdev, int id, return ERR_PTR(-ENOMEM); init.name = kasprintf(GFP_KERNEL, "%s_%d", PLT_CLK_NAME_BASE, id); + if (!init.name) + return ERR_PTR(-ENOMEM); + init.ops = &plt_clk_ops; init.flags = 0; init.parent_names = parent_names; -- 2.43.0 </yanlonglong@xxxxxxxxxx>

 

 

 

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