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qemu/0035-chardev-baum-fix-baum-that-releases.patch

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From d131e1cccb06a09c867752ac4b9a075f4c97ffbc Mon Sep 17 00:00:00 2001
From: Liang Yan <lyan@suse.com>
Date: Fri, 22 Sep 2017 18:55:33 -0400
Subject: [PATCH] chardev/baum: fix baum that releases brlapi twice
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Error process of baum_chr_open needs to set brlapi null, so it won't
get released twice in char_braille_finalize, which will cause
"/usr/bin/qemu-system-x86_64: double free or corruption (!prev)"
Signed-off-by: Liang Yan <lyan@suse.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
(cherry picked from commit 98e8790326d732fc79f0c133d9658f4761ba9cb7)
[LY: BSC#1060045]
Signed-off-by: Liang Yan <lyan@suse.com>
---
chardev/baum.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/chardev/baum.c b/chardev/baum.c
index 302dd9666c..67fd783a59 100644
--- a/chardev/baum.c
+++ b/chardev/baum.c
@@ -643,6 +643,7 @@ static void baum_chr_open(Chardev *chr,
error_setg(errp, "brlapi__openConnection: %s",
brlapi_strerror(brlapi_error_location()));
g_free(handle);
+ baum->brlapi = NULL;
return;
}
baum->deferred_init = 0;