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Re: [PATCH] block-backend: fix virtio-scsi assertion failure with blk_dr
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From: |
Stefan Hajnoczi |
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Subject: |
Re: [PATCH] block-backend: fix virtio-scsi assertion failure with blk_drain_noref() |
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Date: |
Thu, 5 Jan 2023 06:34:57 -0500 |
On Wed, Jan 04, 2023 at 10:37:34PM +0100, Paolo Bonzini wrote:
> blk_root_drained_end is not thread-safe too. I started looking at that with
> https://www.mail-archive.com/qemu-devel@nongnu.org/msg925670.html; that's
> certainly a prerequisite for this patch to be a full fix, but I have not
> checked if it's enough because I don't have the QEMU sources at hand right
> now.
Thanks for letting me know.
Do you think blk_drain_noref() makes sense at all, or should
scsi_purge_requests() avoid calling blk_drain() somehow?
Stefan
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