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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hvm	hvc_xen: support PV on HVM consoles	2012-03-13 19:23:32 -04:00
io	xen/blkback: correctly respond to unknown, non-native requests	2013-04-05 10:04:18 -07:00
callback.h	xen64: define asm/xen/interface for 64-bit	2008-07-16 10:56:18 +02:00
elfnote.h	Fix common misspellings	2011-03-31 11:26:23 -03:00
event_channel.h	xen: clean up asm/xen/hypervisor.h	2008-12-16 21:50:31 +01:00
features.h	xen: support GSI -> pirq remapping in PV on HVM guests	2010-10-22 21:25:42 +01:00
grant_table.h	xen/granttable: Introducing grant table V2 stucture	2011-11-22 09:23:44 -05:00
memory.h	xen: implement XENMEM_machphys_mapping	2010-11-12 15:00:06 -08:00
physdev.h	xen: support pirq_eoi_map	2012-03-20 15:34:07 -04:00
platform.h	xen/acpi-processor: C and P-state driver that uploads said data to hypervisor.	2012-03-14 12:35:42 -04:00
sched.h	watchdog: Xen watchdog driver	2011-03-15 16:02:18 +00:00
vcpu.h
version.h	xen: add /sys/hypervisor support	2009-03-30 09:27:06 -07:00
xen.h	xen/granttable: Introducing grant table V2 stucture	2011-11-22 09:23:44 -05:00
xencomm.h