Bug 1210536

Created attachment 1012901 [details]
File: backtrace

Created attachment 1012902 [details]
File: cgroup

Created attachment 1012903 [details]
File: core_backtrace

Created attachment 1012904 [details]
File: dso_list

Created attachment 1012905 [details]
File: environ

Created attachment 1012906 [details]
File: limits

Created attachment 1012907 [details]
File: maps

Created attachment 1012908 [details]
File: open_fds

Created attachment 1012909 [details]
File: proc_pid_status

This ticket looks very similar to https://bugzilla.redhat.com/show_bug.cgi?id=922437 which was closed as believed to be fixed.

40 faf hits... most are f21 but there's a few everywhere. Comment #0 backtrace hits this assert:

    if (virt < slot->virt_start_addr || (virt + add_size) > slot->virt_end_addr) {
        print_memslots(info);
        spice_critical("virtual address out of range\n"
              "    virt=0x%lx+0x%x slot_id=%d group_id=%d\n"
              "    slot=0x%lx-0x%lx delta=0x%lx",
              virt, add_size, slot_id, group_id,
              slot->virt_start_addr, slot->virt_end_addr, slot->address_delta);
        return 0;
    }

So, likely spice or driver issue. Moving to spice for further triage

Frediano, if you've hit this, can you provide /var/log/libvirt/qemu/$vmname.log ? Would be nice to see what values triggered the assert

I didn't manage to reproduce it.

Specifically I was trying to reproduce problem happening closing the primary surface (with slightly different backtrace).

This seems more a corruption in the ring.

From different bugs seems that a ring corruption can happen.

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There's recent faf hits on f23

*** Bug 1290039 has been marked as a duplicate of this bug. ***

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Approximately 4 (four) weeks from now Fedora will stop maintaining
and issuing updates for Fedora 23. It is Fedora's policy to close all
bug reports from releases that are no longer maintained. At that time
this bug will be closed as EOL if it remains open with a Fedora  'version'
of '23'.

Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, simply change the 'version' 
to a later Fedora version.

Thank you for reporting this issue and we are sorry that we were not 
able to fix it before Fedora 23 is end of life. If you would still like 
to see this bug fixed and are able to reproduce it against a later version 
of Fedora, you are encouraged  change the 'version' to a later Fedora 
version prior this bug is closed as described in the policy above.

Although we aim to fix as many bugs as possible during every release's 
lifetime, sometimes those efforts are overtaken by events. Often a 
more recent Fedora release includes newer upstream software that fixes 
bugs or makes them obsolete.

The faf reports for this particular crash stop at f23, so I think it's safe to close

I'm reasonably sure this is what we have on bz 1421788
and the f25 FAF seems to be:
https://retrace.fedoraproject.org/faf/problems/bthash/?bth=3f4b726cc33210a2d48eb4597096a3527fe234ed&bth=bb9782ecb205ad23175b009565273c66a0661a96