David Vrabel 119016c59b xen/blkback: correctly respond to unknown, non-native requests ... commit 0e367ae465 upstream. If the frontend is using a non-native protocol (e.g., a 64-bit frontend with a 32-bit backend) and it sent an unrecognized request, the request was not translated and the response would have the incorrect ID. This may cause the frontend driver to behave incorrectly or crash. Since the ID field in the request is always in the same place, regardless of the request type we can get the correct ID and make a valid response (which will report BLKIF_RSP_EOPNOTSUPP). This bug affected 64-bit SLES 11 guests when using a 32-bit backend. This guest does a BLKIF_OP_RESERVED_1 (BLKIF_OP_PACKET in the SLES source) and would crash in blkif_int() as the ID in the response would be invalid. Signed-off-by: David Vrabel <david.vrabel@citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2013-04-05 10:04:18 -07:00
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interface	xen/blkback: correctly respond to unknown, non-native requests	2013-04-05 10:04:18 -07:00
balloon.h	xen-balloon: convert sysdev_class to a regular subsystem	2011-12-14 15:32:50 -08:00
events.h	xen: do not map the same GSI twice in PVHVM guests.	2012-06-01 15:18:25 +08:00
evtchn.h
features.h
gntalloc.h	xen/gntalloc,gntdev: Add unmap notify ioctl	2011-02-14 14:16:17 -05:00
gntdev.h	xen/gntalloc,gntdev: Add unmap notify ioctl	2011-02-14 14:16:17 -05:00
grant_table.h	xen/m2p: do not reuse kmap_op->dev_bus_addr	2012-10-02 10:30:06 -07:00
hvc-console.h	treewide: use __printf not __attribute__((format(printf,...)))	2011-10-31 17:30:54 -07:00
hvm.h
Kbuild
page.h	xen: allow balloon driver to use more than one memory region	2011-09-29 11:12:10 -04:00
platform_pci.h	xen: Remove hanging references to CONFIG_XEN_PLATFORM_PCI	2011-11-16 12:13:42 -05:00
privcmd.h
swiotlb-xen.h	X86 & IA64: adapt for dma_map_ops changes	2012-03-28 16:36:31 +02:00
tmem.h	xen/tmem: cleanup	2012-03-20 15:34:18 -04:00
xen-ops.h	Disintegrate asm/system.h for IA64	2012-03-28 18:30:02 +01:00
xen.h
xenbus.h	include/ and checkpatch: prefer __scanf to __attribute__((format(scanf,...)	2012-03-23 16:58:36 -07:00
xenbus_dev.h	xen: Add xenbus_backend device	2011-12-16 13:29:41 -05:00
xencomm.h