From 3d63da16fbcd05405efd5946000cdb45474a9bad Mon Sep 17 00:00:00 2001 From: Jia Lina Date: Fri, 26 Oct 2018 16:36:20 +0800 Subject: migration: avoid segmentfault when take a snapshot of a VM which being migrated During an active background migration, snapshot will trigger a segmentfault. As snapshot clears the "current_migration" struct and updates "to_dst_file" before it finds out that there is a migration task, Migration accesses the null pointer in "current_migration" struct and qemu crashes eventually. Signed-off-by: Jia Lina Signed-off-by: Chai Wen Signed-off-by: Zhang Yu Message-Id: <20181026083620.10172-1-jialina01@baidu.com> Reviewed-by: Dr. David Alan Gilbert Signed-off-by: Dr. David Alan Gilbert --- migration/migration.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'migration/migration.h') diff --git a/migration/migration.h b/migration/migration.h index f7813f8261..e413d4d8b6 100644 --- a/migration/migration.h +++ b/migration/migration.h @@ -241,6 +241,8 @@ void migrate_fd_error(MigrationState *s, const Error *error); void migrate_fd_connect(MigrationState *s, Error *error_in); +bool migration_is_setup_or_active(int state); + void migrate_init(MigrationState *s); bool migration_is_blocked(Error **errp); /* True if outgoing migration has entered postcopy phase */ -- cgit v1.2.3-55-g7522