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[RFC,03/14] qemu-char: avoid potential double-free

Message ID 1441753806-14225-4-git-send-email-marcandre.lureau@redhat.com
State New
Headers show

Commit Message

Marc-André Lureau Sept. 8, 2015, 11:09 p.m. UTC 
From: Marc-André Lureau <marcandre.lureau@redhat.com>

If tcp_set_msgfds() is called several time with NULL fds, this
could lead to double-free.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 qemu-char.c | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/qemu-char.c b/qemu-char.c
index d956f8d..bc37628 100644
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -2713,6 +2713,7 @@  static int tcp_set_msgfds(CharDriverState *chr, int *fds, int num)
     /* clear old pending fd array */
     if (s->write_msgfds) {
         g_free(s->write_msgfds);
+        s->write_msgfds = NULL;
     }
 
     if (num) {