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Re: [Qemu-devel] usb-storage assertions
From: |
Gerd Hoffmann |
Subject: |
Re: [Qemu-devel] usb-storage assertions |
Date: |
Tue, 19 Jan 2016 12:44:24 +0100 |
Hi,
> Probably not enough with driver subsystem to point even at the obvious
> issue in the EHCI driver. I`d start with slowing down an emulated CPU
> 10...100 times via its thread cg, leaving emulator code hanging with
> enough CPU cycles and check if the issue is still here. If roots of
> the crash or endless loop are timing-related, they either would change
> appearance significanly or disappear completely (or vice versa, slow
> an emulator thread). If you don`t have enough time for such blind
> testing, I may check it in a next few days. Since I`ve seen interrupt
> storm complaint on FreeBSD within same conditions, I strongly prefer
> the idea of a race-driven behavior.
Ha! That nailed it. /me was looking for a loop in the code, waiting
for the device having finished reset or something like that. But it
turned out to be a interrupt storm indeed.
cheers,
Gerd
- Re: [Qemu-devel] usb-storage assertions, (continued)
- Re: [Qemu-devel] usb-storage assertions, Daniel P. Berrange, 2016/01/12
- Re: [Qemu-devel] usb-storage assertions, Gerd Hoffmann, 2016/01/13
- Re: [Qemu-devel] usb-storage assertions, Andrey Korolyov, 2016/01/13
- Re: [Qemu-devel] usb-storage assertions, Andrey Korolyov, 2016/01/15
- Re: [Qemu-devel] usb-storage assertions, Gerd Hoffmann, 2016/01/18
- Re: [Qemu-devel] usb-storage assertions, Andrey Korolyov, 2016/01/18
- Re: [Qemu-devel] usb-storage assertions, Gerd Hoffmann, 2016/01/18
- Re: [Qemu-devel] usb-storage assertions, Andrey Korolyov, 2016/01/18
- Re: [Qemu-devel] usb-storage assertions, Gerd Hoffmann, 2016/01/19
- Re: [Qemu-devel] usb-storage assertions, Andrey Korolyov, 2016/01/19
- Re: [Qemu-devel] usb-storage assertions,
Gerd Hoffmann <=
- Re: [Qemu-devel] usb-storage assertions, Gerd Hoffmann, 2016/01/19