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[PATCH v2] plugins/hotblocks: Fix potential deadlock in plugin_exit() fu
From: |
Cong Liu |
Subject: |
[PATCH v2] plugins/hotblocks: Fix potential deadlock in plugin_exit() function |
Date: |
Thu, 21 Sep 2023 17:23:11 +0800 |
This patch fixes a potential deadlock in the plugin_exit() function of QEMU.
The original code does not release the lock mutex if it is NULL. This patch
adds a check for it being NULL and releases the mutex in that case.
Signed-off-by: Cong Liu <liucong2@kylinos.cn>
Suggested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
contrib/plugins/hotblocks.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/contrib/plugins/hotblocks.c b/contrib/plugins/hotblocks.c
index 6b74d25fead6..b99b93ad8dc7 100644
--- a/contrib/plugins/hotblocks.c
+++ b/contrib/plugins/hotblocks.c
@@ -69,9 +69,9 @@ static void plugin_exit(qemu_plugin_id_t id, void *p)
}
g_list_free(it);
- g_mutex_unlock(&lock);
}
+ g_mutex_unlock(&lock);
qemu_plugin_outs(report->str);
}
--
2.34.1