File vhost-user-blk-Make-sure-to-set-Error-on.patch of Package qemu

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File vhost-user-blk-Make-sure-to-set-Error-on.patch of Package qemu (Revision 9201a5ad2e66635d4486cfbd1bc982f2)

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From: Kevin Wolf <kwolf@redhat.com>
Date: Thu, 29 Apr 2021 19:13:11 +0200
Subject: vhost-user-blk: Make sure to set Error on realize failure

Git-commit: f26729715ef21325f972f693607580a829ad1cbb

We have to set errp before jumping to virtio_err, otherwise the caller
(virtio_device_realize()) will take this as success and crash when it
later tries to access things that we've already freed in the error path.

Fixes: 77542d431491788d1e8e79d93ce10172ef207775
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20210429171316.162022-2-kwolf@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Acked-by: Raphael Norwitz <raphael.norwitz@nutanix.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Jose R. Ziviani <jziviani@suse.de>
---
 hw/block/vhost-user-blk.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/hw/block/vhost-user-blk.c b/hw/block/vhost-user-blk.c
index f5e9682703f3433c4b363003f90f..7c85248a7b78b9d9ec8614a3b5fe 100644
--- a/hw/block/vhost-user-blk.c
+++ b/hw/block/vhost-user-blk.c
@@ -447,7 +447,6 @@ static void vhost_user_blk_device_realize(DeviceState *dev, Error **errp)
 {
     VirtIODevice *vdev = VIRTIO_DEVICE(dev);
     VHostUserBlk *s = VHOST_USER_BLK(vdev);
-    Error *err = NULL;
     int i, ret;
 
     if (!s->chardev.chr) {
@@ -495,8 +494,7 @@ static void vhost_user_blk_device_realize(DeviceState *dev, Error **errp)
                              NULL, true);
 
 reconnect:
-    if (qemu_chr_fe_wait_connected(&s->chardev, &err) < 0) {
-        error_report_err(err);
+    if (qemu_chr_fe_wait_connected(&s->chardev, errp) < 0) {
         goto virtio_err;
     }

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File vhost-user-blk-Make-sure-to-set-Error-on.patch of Package qemu (Revision 9201a5ad2e66635d4486cfbd1bc982f2)

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