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powerpc/powernv: Free name on error in opal_event_init()

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[ Upstream commit cf8989d20d64ad702a6210c11a0347ebf3852aa7 ]

In opal_event_init() if request_irq() fails name is not freed, leading
to a memory leak. The code only runs at boot time, there's no way for a
user to trigger it, so there's no security impact.

Fix the leak by freeing name in the error path.

Reported-by: 2639161967 <2639161967@qq.com>
Closes: https://lore.kernel.org/linuxppc-dev/87wmjp3wig.fsf@mail.lhotse
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://patch.msgid.link/20240920093520.67997-1-mpe@ellerman.id.au
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Michael Ellerman 2024-09-20 19:35:20 +10:00 committed by Kreciorek
parent 311449845f
commit 62519b10a4
1 changed files with 1 additions and 0 deletions
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arch/powerpc/platforms/powernv/opal-irqchip.c
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@ -285,6 +285,7 @@ int __init opal_event_init(void)
name, NULL); name, NULL);
if (rc) { if (rc) {
pr_warn("Error %d requesting OPAL irq %d\n", rc, (int)r->start); pr_warn("Error %d requesting OPAL irq %d\n", rc, (int)r->start);
kfree(name);
continue; continue;
} }
} }