Re: [Qemu-devel] help debugging throttle crash

2017-04-06 Thread Eric Blake
On 04/03/2017 10:24 AM, Alberto Garcia wrote: > On Mon, Apr 03, 2017 at 09:07:02AM -0500, Eric Blake wrote: > >> At this point, it looks like no one is calling >> throttle_group_unregister_blk() as a result of the 'device_del', >> which leaves stale memory around > > I see, I can also reproduce t

Re: [Qemu-devel] help debugging throttle crash

2017-04-03 Thread Alberto Garcia
On Mon, Apr 03, 2017 at 09:07:02AM -0500, Eric Blake wrote: > At this point, it looks like no one is calling > throttle_group_unregister_blk() as a result of the 'device_del', > which leaves stale memory around I see, I can also reproduce this very easily. I wonder if it's not enough to simply d

[Qemu-devel] help debugging throttle crash

2017-04-03 Thread Eric Blake
I'm trying to investigate https://bugzilla.redhat.com/show_bug.cgi?id=1428810, which is a crash that can be easily reproduced with the following steps: $ ./x86_64-softmmu/qemu-system-x86_64 -nodefaults -nographic -qmp stdio -device virtio-scsi-pci,bus=pci.0 -drive id=drive_image2,if=none,format=r