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[PATCH] plugins/hotblocks: Fix potential deadlock in plugin_exit() funct
From: |
Cong Liu |
Subject: |
[PATCH] plugins/hotblocks: Fix potential deadlock in plugin_exit() function |
Date: |
Thu, 21 Sep 2023 14:12:31 +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>
---
contrib/plugins/hotblocks.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/contrib/plugins/hotblocks.c b/contrib/plugins/hotblocks.c
index 6b74d25fead6..1f713f1904f3 100644
--- a/contrib/plugins/hotblocks.c
+++ b/contrib/plugins/hotblocks.c
@@ -70,6 +70,8 @@ static void plugin_exit(qemu_plugin_id_t id, void *p)
g_list_free(it);
g_mutex_unlock(&lock);
+ } else {
+ g_mutex_unlock(&lock);
}
qemu_plugin_outs(report->str);
--
2.34.1
- [PATCH] plugins/hotblocks: Fix potential deadlock in plugin_exit() function,
Cong Liu <=