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migration: Do not call PRECOPY_NOTIFY_SETUP notifiers in case of error 

When commit bd2270608f ("migration/ram.c: add a notifier chain for
precopy") added PRECOPY_NOTIFY_SETUP notifiers at the end of
qemu_savevm_state_setup(), it didn't take into account a possible
error in the loop calling vmstate_save() or .save_setup() handlers.

Check ret value before calling the notifiers.

Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/r/20240304122844.1888308-10-clg@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>
This commit is contained in:
Cédric Le Goater 2024-03-04 13:28:27 +01:00 committed by Peter Xu
parent ee8bb867ec
commit e6e08e8323
1 changed files with 5 additions and 1 deletions
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6
migration/savevm.c
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@ -1317,7 +1317,7 @@ void qemu_savevm_state_setup(QEMUFile *f)
MigrationState *ms = migrate_get_current();
SaveStateEntry *se;
Error *local_err = NULL;
int ret;
int ret = 0;
json_writer_int64(ms->vmdesc, "page_size", qemu_target_page_size());
json_writer_start_array(ms->vmdesc, "devices");
@ -1351,6 +1351,10 @@ void qemu_savevm_state_setup(QEMUFile *f)
}
}
if (ret) {
return;
}
if (precopy_notify(PRECOPY_NOTIFY_SETUP, &local_err)) {
error_report_err(local_err);
}