This is a note to let you know that I've just added the patch titled
powerpc/powernv: Free name on error in opal_event_init()
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
powerpc-powernv-free-name-on-error-in-opal_event_ini.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit f4bd4581f75d7ddda445d638ff866bfc915efe7c
Author: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Date: Fri Sep 20 19:35:20 2024 +1000
powerpc/powernv: Free name on error in opal_event_init()
[ 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@xxxxxx>
Closes: https://lore.kernel.org/linuxppc-dev/87wmjp3wig.fsf@mail.lhotse
Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Link: https://patch.msgid.link/20240920093520.67997-1-mpe@xxxxxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/arch/powerpc/platforms/powernv/opal-irqchip.c b/arch/powerpc/platforms/powernv/opal-irqchip.c
index e71f2111c8c0b..676ec9fdd115d 100644
--- a/arch/powerpc/platforms/powernv/opal-irqchip.c
+++ b/arch/powerpc/platforms/powernv/opal-irqchip.c
@@ -289,6 +289,7 @@ 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;
}
}
