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irqchip/gic-v3-its: Fix potential VPE leak on error

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[ Upstream commit 280bef5129 ]

In its_vpe_irq_domain_alloc, when its_vpe_init() returns an error,
there is an off-by-one in the number of VPEs to be freed.

Fix it by simply passing the number of VPEs allocated, which is the
index of the loop iterating over the VPEs.

Fixes: 7d75bbb4bc ("irqchip/gic-v3-its: Add VPE irq domain allocation/teardown")
Signed-off-by: Kaige Fu <kaige.fu@linux.alibaba.com>
[maz: fixed commit message]
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/d9e36dee512e63670287ed9eff884a5d8d6d27f2.1631672311.git.kaige.fu@linux.alibaba.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Kaige Fu 2021-09-15 10:20:55 +08:00 • committed by Greg Kroah-Hartman
commit 568662e37f
1 changed files with 1 additions and 1 deletions
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2
drivers/irqchip/irq-gic-v3-its.c
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@ -4489,7 +4489,7 @@ static int its_vpe_irq_domain_alloc(struct irq_domain *domain, unsigned int virq
if (err) {
if (i > 0)
its_vpe_irq_domain_free(domain, virq, i - 1);
its_vpe_irq_domain_free(domain, virq, i);
its_lpi_free(bitmap, base, nr_ids);
its_free_prop_table(vprop_page);