Comment # 15 on bug 1193019 from Dario Faggioli

(In reply to Michiya Hagimoto from comment #14)
> (In reply to Dario Faggioli from comment #13)
> > (In reply to Michiya Hagimoto from comment #12)
> > > Yes, all guests use the same Qemu.
> > > There was an update to Qemu last month, and since then this issue has
> > > surfaced, and I suspect that something has changed there.
> > >
> > Ok, do you happen to remember (or have in some logs, like zypper history,
> > etc) from which version to which version the update was?
> > 
> 
> From qemu-5.2.0-103.2.x86_64.rpm
> To qemu-5.2.0-106.4.x86_64.rpm
> 
Ok, thanks!

If that's the case, this is what happened to the package between those two
versions:

* Thu Sep 30 2021 jose.ziviani@suse.com
- Fix out-of-bounds write in UAS (USB Attached SCSI) device emulation
  (bsc#1189702, CVE-2021-3713)
  uas-add-stream-number-sanity-checks.patch
- Fix heap use-after-free in virtio_net_receive_rcu
  (bsc#1189938, CVE-2021-3748)
  virtio-net-fix-use-after-unmap-free-for-.patch

* Tue Sep 14 2021 lma@suse.com
- Add transfer length item in block limits page of scsi vpd (bsc#1190425)
  * Patches added:
  block-add-max_hw_transfer-to-BlockLimits.patch
  block-backend-align-max_transfer-to-requ.patch
  file-posix-fix-max_iov-for-dev-sg-device.patch
  file-posix-try-BLKSECTGET-on-block-devic.patch
  osdep-provide-ROUND_DOWN-macro.patch
  scsi-generic-pass-max_segments-via-max_i.patch

* Fri Sep 03 2021 lma@suse.com
- Fix qemu crash while deleting xen-block (bsc#1189234)
  * Patches added:
  xen-remove-BlockBackend-object-reference.patch

I can try to provide test packages with some of these patches removed, as soon
as I find the time for it.

In the meanwhile, Ma Lin, do you think any of those "block-" patches you added
(or others) could be responsible for soemthing like this?