From: Henry Martin Date: Tue, 1 Apr 2025 13:13:41 +0000 (+0800) Subject: clk: davinci: Add NULL check in davinci_lpsc_clk_register() X-Git-Tag: io_uring-6.17-20250815~88^2~4^3~24 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=13de464f445d42738fe18c9a28bab056ba3a290a;p=linux-block.git clk: davinci: Add NULL check in davinci_lpsc_clk_register() devm_kasprintf() returns NULL when memory allocation fails. Currently, davinci_lpsc_clk_register() does not check for this case, which results in a NULL pointer dereference. Add NULL check after devm_kasprintf() to prevent this issue and ensuring no resources are left allocated. Fixes: c6ed4d734bc7 ("clk: davinci: New driver for davinci PSC clocks") Signed-off-by: Henry Martin Link: https://lore.kernel.org/r/20250401131341.26800-1-bsdhenrymartin@gmail.com Reviewed-by: David Lechner Signed-off-by: Stephen Boyd --- diff --git a/drivers/clk/davinci/psc.c b/drivers/clk/davinci/psc.c index b48322176c21..f3ee9397bb0c 100644 --- a/drivers/clk/davinci/psc.c +++ b/drivers/clk/davinci/psc.c @@ -277,6 +277,11 @@ davinci_lpsc_clk_register(struct device *dev, const char *name, lpsc->pm_domain.name = devm_kasprintf(dev, GFP_KERNEL, "%s: %s", best_dev_name(dev), name); + if (!lpsc->pm_domain.name) { + clk_hw_unregister(&lpsc->hw); + kfree(lpsc); + return ERR_PTR(-ENOMEM); + } lpsc->pm_domain.attach_dev = davinci_psc_genpd_attach_dev; lpsc->pm_domain.detach_dev = davinci_psc_genpd_detach_dev; lpsc->pm_domain.flags = GENPD_FLAG_PM_CLK;