From fd3806562f450a6189c31e0d2cb9cd4b208dcf2d Mon Sep 17 00:00:00 2001 From: Christophe JAILLET Date: Thu, 1 Aug 2019 10:32:42 +0200 Subject: [PATCH] powerpc/xive: Add a check for memory allocation failure The result of this kzalloc is not checked. Add a check and corresponding error handling code. Signed-off-by: Christophe JAILLET Reviewed-by: Greg Kurz Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/cc53462734dfeaf15b6bad0e626b483de18656b4.1564647619.git.christophe.jaillet@wanadoo.fr --- arch/powerpc/sysdev/xive/spapr.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/powerpc/sysdev/xive/spapr.c b/arch/powerpc/sysdev/xive/spapr.c index b4f5eb9e0f82..52198131c75e 100644 --- a/arch/powerpc/sysdev/xive/spapr.c +++ b/arch/powerpc/sysdev/xive/spapr.c @@ -53,6 +53,10 @@ static int xive_irq_bitmap_add(int base, int count) xibm->base = base; xibm->count = count; xibm->bitmap = kzalloc(xibm->count, GFP_KERNEL); + if (!xibm->bitmap) { + kfree(xibm); + return -ENOMEM; + } list_add(&xibm->list, &xive_irq_bitmaps); pr_info("Using IRQ range [%x-%x]", xibm->base,