From: Paolo Bonzini <pbonzini@redhat.com>
To: qemu-devel@nongnu.org
Cc: "Alex Bennée" <alex.bennee@linaro.org>
Subject: [PATCH] tests/plugins: fix use-after-free bug
Date: Mon, 11 Mar 2024 09:16:19 +0100 [thread overview]
Message-ID: <20240311081619.669832-1-pbonzini@redhat.com> (raw)
rec->count.score is inside rec, which is freed before rec->count.score is.
Reorder the instructions
Reported by Coverity as CID 1539967.
Cc: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
contrib/plugins/howvec.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/contrib/plugins/howvec.c b/contrib/plugins/howvec.c
index 2d10c87e0fb..94bbc53820a 100644
--- a/contrib/plugins/howvec.c
+++ b/contrib/plugins/howvec.c
@@ -167,9 +167,9 @@ static gint cmp_exec_count(gconstpointer a, gconstpointer b)
static void free_record(gpointer data)
{
InsnExecCount *rec = (InsnExecCount *) data;
+ qemu_plugin_scoreboard_free(rec->count.score);
g_free(rec->insn);
g_free(rec);
- qemu_plugin_scoreboard_free(rec->count.score);
}
static void plugin_exit(qemu_plugin_id_t id, void *p)
--
2.43.2
next reply other threads:[~2024-03-11 8:17 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-11 8:16 Paolo Bonzini [this message]
2024-03-11 8:26 ` [PATCH] tests/plugins: fix use-after-free bug Philippe Mathieu-Daudé
2024-03-11 8:30 ` Philippe Mathieu-Daudé
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