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From: | Paolo Bonzini |
Subject: | Re: [Qemu-block] [Qemu-devel] [PATCH] block: Fix qemu crash when using scsi-block |
Date: | Thu, 23 Nov 2017 18:31:00 +0100 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 |
On 23/11/2017 18:29, Kevin Wolf wrote: >> Note that a similar issue exists in >> blk_ioctl()/blk_ioctl_entry()/blk_prw() where blk_prw() always creates >> the QEMUIOVector even if blk_ioctl()/blk_ioctl_entry() does not need a >> QEMUIOVector. This will need to be fixed separately to keep it >> consistent with the AIO path. > > I don't think there is an actual problem in the blk_ioctl() path because > the iov on the stack stays valid as long as the coroutine runs. AIO is > different because it returns before the coroutine has terminated. I agree, it's just code that is slightly ugly. Paolo
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