From: Zenghui Yu yuzenghui@huawei.com
stable inclusion from stable-v5.10.219 commit f31b49ba366260ef7a1af537f936b3837359fe04 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IAMQU1
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit ff3669a71afa06208de58d6bea1cc49d5e3fcbd1 ]
When alpine_msix_gic_domain_alloc() fails, there is an off-by-one in the number of interrupts to be freed.
Fix it by passing the number of successfully allocated interrupts, instead of the relative index of the last allocated one.
Fixes: 3841245e8498 ("irqchip/alpine-msi: Fix freeing of interrupts on allocation error path") Signed-off-by: Zenghui Yu yuzenghui@huawei.com Signed-off-by: Thomas Gleixner tglx@linutronix.de Link: https://lore.kernel.org/r/20240327142305.1048-1-yuzenghui@huawei.com Signed-off-by: Sasha Levin sashal@kernel.org Conflicts: drivers/irqchip/irq-alpine-msi.c [adjust context] Signed-off-by: Yuntao Liu liuyuntao12@huawei.com --- drivers/irqchip/irq-alpine-msi.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/irqchip/irq-alpine-msi.c b/drivers/irqchip/irq-alpine-msi.c index 23a3b877f7f1..fc958d1acdce 100644 --- a/drivers/irqchip/irq-alpine-msi.c +++ b/drivers/irqchip/irq-alpine-msi.c @@ -165,8 +165,7 @@ static int alpine_msix_middle_domain_alloc(struct irq_domain *domain, return 0;
err_sgi: - while (--i >= 0) - irq_domain_free_irqs_parent(domain, virq, i); + irq_domain_free_irqs_parent(domain, virq, i); alpine_msix_free_sgi(priv, sgi, nr_irqs); return err; }