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powerpc/powernv: Add a null pointer check in opal_event_init()

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[ Upstream commit 8649829a1dd25199bbf557b2621cedb4bf9b3050 ]

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@kylinos.cn>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20231127030755.1546750-1-chentao@kylinos.cn
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Kunwu Chan 2023-11-27 11:07:55 +08:00 • committed by Ksawlii
parent 8b72a077b0
commit 40719c8bbd
1 changed files with 2 additions and 0 deletions
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2
arch/powerpc/platforms/powernv/opal-irqchip.c
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@ -278,6 +278,8 @@ 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);