Ross Lagerwall a021a2dd8b xen-mapcache: Avoid entry->lock overflow ... In some cases, a particular mapcache entry may be mapped 256 times causing the lock field to wrap to 0. For example, this may happen when using emulated NVME and the guest submits a large scatter-gather write. At this point, the entry map be remapped causing QEMU to write the wrong data or crash (since remap is not atomic). Avoid this overflow by increasing the lock field to a uint32_t and also detect it and abort rather than continuing regardless. Signed-off-by: Ross Lagerwall <ross.lagerwall@citrix.com> Reviewed-by: Paul Durrant <paul@xen.org> Reviewed-by: Stefano Stabellini <sstabellini@kernel.org> Message-Id: <20220124104450.152481-1-ross.lagerwall@citrix.com> Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>		2022-01-27 15:14:21 +00:00
..
meson.build	meson: convert hw/arch*	2020-08-21 06:30:33 -04:00
trace-events	docs: fix references to docs/devel/tracing.rst	2021-06-02 06:51:09 +02:00
trace.h	trace: switch position of headers to what Meson requires	2020-08-21 06:18:24 -04:00
xen_apic.c	Include qemu/module.h where needed, drop it from qemu-common.h	2019-06-12 13:18:33 +02:00
xen_platform.c	Do not include exec/address-spaces.h if it's not really necessary	2021-05-02 17:24:51 +02:00
xen_pvdevice.c	Use OBJECT_DECLARE_SIMPLE_TYPE when possible	2020-09-18 14:12:32 -04:00
xen-hvm.c	xen-hvm: Allow disabling buffer_io_timer	2022-01-27 15:14:11 +00:00
xen-mapcache.c	xen-mapcache: Avoid entry->lock overflow	2022-01-27 15:14:21 +00:00