Juergen GrossandSasha Levin cfbb3abadc xen/events: increment refcnt only if event channel is refcounted ...

[ Upstream commit d277f9d828 ]

In bind_evtchn_to_irq_chip() don't increment the refcnt of the event
channel blindly. In case the event channel is NOT refcounted, issue a
warning instead.

Add an additional safety net by doing the refcnt increment only if the
caller has specified IRQF_SHARED in the irqflags parameter.

Fixes: 9e90e58c11 ("xen: evtchn: Allow shared registration of IRQ handers")
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
Link: https://lore.kernel.org/r/20240313071409.25913-3-jgross@suse.com
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2024-03-26 18:20:09 -04:00

..

events

xen/events: increment refcnt only if event channel is refcounted

2024-03-26 18:20:09 -04:00

xen-pciback

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xenbus

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xenfs

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acpi.c

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arm-device.c

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balloon.c

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biomerge.c

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cpu_hotplug.c

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dbgp.c

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efi.c

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evtchn.c

xen/evtchn: avoid WARN() when unbinding an event channel

2024-03-26 18:20:09 -04:00

features.c

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gntalloc.c

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gntdev-common.h

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gntdev-dmabuf.c

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gntdev-dmabuf.h

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gntdev.c

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grant-dma-iommu.c

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grant-dma-ops.c

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grant-table.c

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Kconfig

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Makefile

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manage.c

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mcelog.c

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mem-reservation.c

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pci.c

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pcpu.c

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platform-pci.c

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privcmd-buf.c

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privcmd.c

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privcmd.h

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pvcalls-back.c

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pvcalls-front.c

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pvcalls-front.h

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swiotlb-xen.c

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sys-hypervisor.c

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time.c

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unpopulated-alloc.c

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xen-acpi-pad.c

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xen-acpi-processor.c

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xen-balloon.c

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xen-front-pgdir-shbuf.c

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xen-scsiback.c

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xlate_mmu.c

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