From fd3806562f450a6189c31e0d2cb9cd4b208dcf2d Mon Sep 17 00:00:00 2001
From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Date: Thu, 1 Aug 2019 10:32:42 +0200
Subject: [PATCH] powerpc/xive: Add a check for memory allocation failure
References: fate#322438 git-fixes
Patch-mainline: v5.4-rc1
Git-commit: fd3806562f450a6189c31e0d2cb9cd4b208dcf2d
The result of this kzalloc is not checked. Add a check and corresponding
error handling code.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/cc53462734dfeaf15b6bad0e626b483de18656b4.1564647619.git.christophe.jaillet@wanadoo.fr
Acked-by: Michal Suchanek <msuchanek@suse.de>
---
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,
--
2.35.3