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Migration+TLS: Fix crash due to double cleanup

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During a TLS connect we see:
  migration_channel_connect calls
  migration_tls_channel_connect
  (calls after TLS setup)
  migration_channel_connect

My previous error handling fix made migration_channel_connect
call migrate_fd_connect in all cases; unfortunately the above
means it gets called twice and crashes doing double cleanup.

Fixes: 688a3dcba9

Reported-by: Peter Krempa <pkrempa@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20180430185943.35714-1-dgilbert@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
This commit is contained in:
Dr. David Alan Gilbert 2018-04-30 19:59:43 +01:00 committed by Juan Quintela
parent 5e50cae409
commit 8b7bf2bada
1 changed files with 9 additions and 0 deletions
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9
migration/channel.c
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@ -71,6 +71,15 @@ void migration_channel_connect(MigrationState *s,
!object_dynamic_cast(OBJECT(ioc), !object_dynamic_cast(OBJECT(ioc),
TYPE_QIO_CHANNEL_TLS)) { TYPE_QIO_CHANNEL_TLS)) {
migration_tls_channel_connect(s, ioc, hostname, &error); migration_tls_channel_connect(s, ioc, hostname, &error);
if (!error) {
/* tls_channel_connect will call back to this
* function after the TLS handshake,
* so we mustn't call migrate_fd_connect until then
*/
return;
}
} else { } else {
QEMUFile *f = qemu_fopen_channel_output(ioc); QEMUFile *f = qemu_fopen_channel_output(ioc);