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Cornelia Huck 237242bddc virtio: Don't access index after unregister. ... Virtio wants to release used indices after the corresponding virtio device has been unregistered. However, virtio does not hold an extra reference, giving up its last reference with device_unregister(), making accessing dev->index afterwards invalid. I actually saw problems when testing my (not-yet-merged) virtio-ccw code: - device_add virtio-net,id=xxx -> creates device virtio<n> with n>0 - device_del xxx -> deletes virtio<n>, but calls ida_simple_remove with an index of 0 - device_add virtio-net,id=xxx -> tries to add virtio0, which is still in use... So let's save the index we want to release before calling device_unregister(). Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Acked-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Cc: stable@kernel.org Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>		12 years ago
..
Kconfig	virtio: remove CONFIG_VIRTIO_RING	13 years ago
Makefile	virtio: remove CONFIG_VIRTIO_RING	13 years ago
config.c	Remove all #inclusions of asm/system.h	13 years ago
virtio.c	virtio: Don't access index after unregister.	12 years ago
virtio_balloon.c	virtio-balloon: fix add/get API use	13 years ago
virtio_mmio.c	virtio_mmio: Don't attempt to create empty virtqueues	13 years ago
virtio_pci.c	drivers/virtio/virtio_pci.c: fix error return code	13 years ago
virtio_ring.c	virtio-ring: move queue_index to vring_virtqueue	13 years ago