42 lines
1.4 KiB
Diff
42 lines
1.4 KiB
Diff
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From 17e6be412054ae22027a339614fca82d55e64973 Mon Sep 17 00:00:00 2001
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From: qihao <qihao@cmss.chinamobile.com>
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Date: Thu, 30 Mar 2023 17:45:11 +0800
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Subject: [PATCH] vhost-user-blk: fix the resize crash
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cheery-pick from ab6075d849f4285fc730d3ae6e17418d65d09998
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If the os is not installed and doesn't have the virtio guest driver,
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the vhost dev isn't started, so the dev->vdev is NULL.
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Reproduce: mount a Win 2019 iso, go into the install ui, then resize
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the virtio-blk device, qemu crash.
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Signed-off-by: qihao_yewu <qihao_yewu@cmss.chinamobile.com>
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Signed-off-by: Li Feng <fengli@smartx.com>
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Message-Id: <20220919121816.3252223-1-fengli@smartx.com>
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Reviewed-by: Raphael Norwitz <raphael.norwitz@nutanix.com>
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Reviewed-by: Kevin Wolf <kwolf@redhat.com>
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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---
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hw/block/vhost-user-blk.c | 4 ++++
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1 file changed, 4 insertions(+)
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diff --git a/hw/block/vhost-user-blk.c b/hw/block/vhost-user-blk.c
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index eb1264afc7..bcc3f83c4b 100644
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--- a/hw/block/vhost-user-blk.c
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+++ b/hw/block/vhost-user-blk.c
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@@ -95,6 +95,10 @@ static int vhost_user_blk_handle_config_change(struct vhost_dev *dev)
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VHostUserBlk *s = VHOST_USER_BLK(dev->vdev);
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Error *local_err = NULL;
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+ if (!dev->started) {
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+ return 0;
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+ }
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+
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ret = vhost_dev_get_config(dev, (uint8_t *)&blkcfg,
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sizeof(struct virtio_blk_config),
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&local_err);
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--
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2.27.0
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