xemu/migration
Denis V. Lunev 0aa6aefc9c migration (ordinary): move bdrv_invalidate_cache_all of of coroutine context
There is a possibility to hit an assert in qcow2_get_specific_info that
s->qcow_version is undefined. This happens when VM in starting from
suspended state, i.e. it processes incoming migration, and in the same
time 'info block' is called.

The problem is that qcow2_invalidate_cache() closes the image and
memset()s BDRVQcowState in the middle.

The patch moves processing of bdrv_invalidate_cache_all out of
coroutine context for standard migration to avoid that.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Reviewed-by: Fam Zheng <famz@redhat.com>
CC: Paolo Bonzini <pbonzini@redhat.com>
CC: Juan Quintela <quintela@redhat.com>
CC: Amit Shah <amit.shah@redhat.com>
Message-Id: <1456304019-10507-2-git-send-email-den@openvz.org>

[Amit: Fix a use-after-free bug]

Signed-off-by: Amit Shah <amit.shah@redhat.com>
2016-02-26 20:39:50 +05:30
..
block.c block-migration: acquire AioContext as necessary 2016-02-25 13:14:18 +02:00
exec.c migration: rename 'file' in MigrationState to 'to_dst_file' 2016-02-05 19:09:50 +05:30
fd.c migration: rename 'file' in MigrationState to 'to_dst_file' 2016-02-05 19:09:50 +05:30
Makefile.objs postcopy: OS support test 2015-11-10 15:00:26 +01:00
migration.c migration (ordinary): move bdrv_invalidate_cache_all of of coroutine context 2016-02-26 20:39:50 +05:30
postcopy-ram.c migration/postcopy-ram: Guard use of sys/eventfd.h with CONFIG_EVENTFD 2016-02-26 15:05:25 +05:30
qemu-file-buf.c migration: Clean up includes 2016-01-29 15:07:22 +00:00
qemu-file-internal.h Split struct QEMUFile out 2014-12-16 17:47:36 +05:30
qemu-file-stdio.c migration: Clean up includes 2016-01-29 15:07:22 +00:00
qemu-file-unix.c migration: Clean up includes 2016-01-29 15:07:22 +00:00
qemu-file.c migration: Clean up includes 2016-01-29 15:07:22 +00:00
ram.c migration: fix incorrect memory_global_dirty_log_start outside BQL 2016-02-16 15:34:43 +01:00
rdma.c migration: rename 'file' in MigrationState to 'to_dst_file' 2016-02-05 19:09:50 +05:30
savevm.c migration: reorder code to make it symmetric 2016-02-26 15:05:24 +05:30
tcp.c migration: rename 'file' in MigrationState to 'to_dst_file' 2016-02-05 19:09:50 +05:30
unix.c migration: rename 'file' in MigrationState to 'to_dst_file' 2016-02-05 19:09:50 +05:30
vmstate.c migration: Clean up includes 2016-01-29 15:07:22 +00:00
xbzrle.c migration: Clean up includes 2016-01-29 15:07:22 +00:00