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Re: [Qemu-devel] [Qemu-block] question: I found a qemu crash when attac

From: Paolo Bonzini
Subject: Re: [Qemu-devel] [Qemu-block] question: I found a qemu crash when attach virtio-scsi disk
Date: Thu, 9 Nov 2017 12:43:23 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0

On 09/11/2017 12:33, Stefan Hajnoczi wrote:
>>> Can main thread somehow call aio_context_acquire(vs->ctx) (and release) 
>>> around
>>> qdev_set_parent_bus()? virtio_scsi_device_find() takes the lock.
>> No, the context is not set yet.  But the locking is easy to add,
>> separately from the bug that Zhengui is reporting.
> Do you want to submit a patch for this instead of the
> aio_disable_external() approach I posted?  I think your idea is cleaner
> than modifying the geometry probing function.

Yes, I will.  Both the locking and the "online" status.


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