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Message-Id: <20231127030755.1546750-1-chentao@kylinos.cn>
Date: Mon, 27 Nov 2023 11:07:55 +0800
From: Kunwu Chan <chentao@...inos.cn>
To: mpe@...erman.id.au, npiggin@...il.com, christophe.leroy@...roup.eu,
benh@...nel.crashing.org, rmclure@...ux.ibm.com
Cc: kunwu.chan@...mail.com, linuxppc-dev@...ts.ozlabs.org,
linux-kernel@...r.kernel.org, Kunwu Chan <chentao@...inos.cn>
Subject: [PATCH] powerpc/powernv: Add a null pointer check in opal_event_init
kasprintf() returns a pointer to dynamically allocated memory
which can be NULL upon failure.
Fixes: 2717a33d6074 ("powerpc/opal-irqchip: Use interrupt names if present")
Signed-off-by: Kunwu Chan <chentao@...inos.cn>
---
arch/powerpc/platforms/powernv/opal-irqchip.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/powerpc/platforms/powernv/opal-irqchip.c b/arch/powerpc/platforms/powernv/opal-irqchip.c
index f9a7001dacb7..56a1f7ce78d2 100644
--- a/arch/powerpc/platforms/powernv/opal-irqchip.c
+++ b/arch/powerpc/platforms/powernv/opal-irqchip.c
@@ -275,6 +275,8 @@ int __init opal_event_init(void)
else
name = kasprintf(GFP_KERNEL, "opal");
+ if (!name)
+ continue;
/* Install interrupt handler */
rc = request_irq(r->start, opal_interrupt, r->flags & IRQD_TRIGGER_MASK,
name, NULL);
--
2.34.1
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