Marc Zyngier 01282ab518 irqchip/gic-v4: Don't allow a VMOVP on a dying VPE ... commit 1442ee0011 upstream. Kunkun Jiang reported that there is a small window of opportunity for userspace to force a change of affinity for a VPE while the VPE has already been unmapped, but the corresponding doorbell interrupt still visible in /proc/irq/. Plug the race by checking the value of vmapp_count, which tracks whether the VPE is mapped ot not, and returning an error in this case. This involves making vmapp_count common to both GICv4.1 and its v4.0 ancestor. Fixes: 64edfaa9a2 ("irqchip/gic-v4.1: Implement the v4.1 flavour of VMAPP") Reported-by: Kunkun Jiang <jiangkunkun@huawei.com> Signed-off-by: Marc Zyngier <maz@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/c182ece6-2ba0-ce4f-3404-dba7a3ab6c52@huawei.com Link: https://lore.kernel.org/all/20241002204959.2051709-1-maz@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2024-10-22 15:46:35 +02:00
..
arm-gic-common.h
arm-gic-v3.h
arm-gic-v4.h	irqchip/gic-v4: Don't allow a VMOVP on a dying VPE	2024-10-22 15:46:35 +02:00
arm-gic.h	irqchip/gic: Drop support for board files	2023-04-08 10:50:04 +01:00
arm-vgic-info.h
arm-vic.h
chained_irq.h
irq-bcm2836.h
irq-davinci-aintc.h
irq-davinci-cp-intc.h
irq-madera.h
irq-omap-intc.h
irq-partition-percpu.h
irq-sa11x0.h
xtensa-mx.h
xtensa-pic.h