This is a note to let you know that I've just added the patch titled
powerpc/xive: add missing iounmap() in error path in xive_spapr_populate_irq_data()
to the 5.15-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-xive-add-missing-iounmap-in-error-path-in-xi.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 323a44a342bb4121eb89f06c9531b6cd98d54fb0
Author: Yang Yingliang <yangyingliang@xxxxxxxxxx>
Date: Mon Oct 17 11:23:33 2022 +0800
powerpc/xive: add missing iounmap() in error path in xive_spapr_populate_irq_data()
[ Upstream commit 8b49670f3bb3f10cd4d5a6dca17f5a31b173ecdc ]
If remapping 'data->trig_page' fails, the 'data->eoi_mmio' need be unmapped
before returning from xive_spapr_populate_irq_data().
Fixes: eac1e731b59e ("powerpc/xive: guest exploitation of the XIVE interrupt controller")
Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx>
Reviewed-by: Cédric Le Goater <clg@xxxxxxxx>
Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20221017032333.1852406-1-yangyingliang@xxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/arch/powerpc/sysdev/xive/spapr.c b/arch/powerpc/sysdev/xive/spapr.c
index 2bf78a30238b..43bd2579d942 100644
--- a/arch/powerpc/sysdev/xive/spapr.c
+++ b/arch/powerpc/sysdev/xive/spapr.c
@@ -437,6 +437,7 @@ static int xive_spapr_populate_irq_data(u32 hw_irq, struct xive_irq_data *data)
data->trig_mmio = ioremap(data->trig_page, 1u << data->esb_shift);
if (!data->trig_mmio) {
+ iounmap(data->eoi_mmio);
pr_err("Failed to map trigger page for irq 0x%x\n", hw_irq);
return -ENOMEM;
}
