From: Zhang Chen <address@hidden>
I found upstream codes conflict with COLO and lead to crash,
and I located to this patch:
commit 386a907b37a9321bc5d699bc37104d6ffba1b34d
Author: Wei Wang <address@hidden>
Date: Tue Dec 11 16:24:49 2018 +0800
migration: use bitmap_mutex in migration_bitmap_clear_dirty
My colleague Wei's patch add bitmap_mutex in migration_bitmap_clear_dirty,
but COLO didn't initialize the bitmap_mutex. So we always get an error
when COLO start up. like that:
qemu-system-x86_64: util/qemu-thread-posix.c:64: qemu_mutex_lock_impl: Assertion
`mutex->initialized' failed.
This patch add the bitmap_mutex initialize and destroy in COLO
lifecycle.
Signed-off-by: Zhang Chen <address@hidden>
---
migration/ram.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/migration/ram.c b/migration/ram.c
index d7f8fe45a8..f68beeeeff 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -3918,6 +3918,7 @@ int colo_init_ram_cache(void)
}
ram_state = g_new0(RAMState, 1);
ram_state->migration_dirty_pages = 0;
+ qemu_mutex_init(&ram_state->bitmap_mutex);
memory_global_dirty_log_start();
return 0;
@@ -3956,6 +3957,7 @@ void colo_release_ram_cache(void)
}
rcu_read_unlock();
+ qemu_mutex_destroy(&ram_state->bitmap_mutex);
g_free(ram_state);
ram_state = NULL;
}