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

Message ID 20240920093520.67997-1-mpe@ellerman.id.au (mailing list archive)
State New
Headers show
Series powerpc/powernv: Free name on error in opal_event_init() | expand

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Commit Message

Michael Ellerman Sept. 20, 2024, 9:35 a.m. UTC 
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>
---
 arch/powerpc/platforms/powernv/opal-irqchip.c | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

diff --git a/arch/powerpc/platforms/powernv/opal-irqchip.c b/arch/powerpc/platforms/powernv/opal-irqchip.c
index 56a1f7ce78d2..d92759c21fae 100644
--- a/arch/powerpc/platforms/powernv/opal-irqchip.c
+++ b/arch/powerpc/platforms/powernv/opal-irqchip.c
@@ -282,6 +282,7 @@  int __init opal_event_init(void)
 				 name, NULL);
 		if (rc) {
 			pr_warn("Error %d requesting OPAL irq %d\n", rc, (int)r->start);
+			kfree(name);
 			continue;
 		}
 	}