other: 0.724
semantic: 0.660
graphic: 0.646
debug: 0.641
permissions: 0.622
performance: 0.621
device: 0.606
boot: 0.600
PID: 0.584
socket: 0.580
files: 0.572
network: 0.560
vnc: 0.519
KVM: 0.482

segfault in apic_report_irq_delivered when booting tinycore_3.3.iso

it git head (33cf629) sometimes it segfaults in apic_report_irq_delivered() and backtrace is looping in apic_update_irq(#3-#4)

Log:
C:\msys\home\User\qemu\i386-softmmu>gdb --args qemu-system-i386.exe -L ..\pc-bios -cdrom tinycore_3.3.iso
GNU gdb (GDB) 7.3
Copyright (C) 2011 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "mingw32".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from C:\msys\home\User\qemu\i386-softmmu/qemu-system-i386.exe...
done.
(gdb) r
Starting program: C:\msys\home\User\qemu\i386-softmmu/qemu-system-i386.exe -L ..\\pc-bios -cdrom tinycore_3.3.iso
[New Thread 9012.0x2348]
[New Thread 9012.0x2860]
[New Thread 9012.0x2b64]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 9012.0x2b64]
0x0053cde8 in apic_report_irq_delivered (delivered=0)
    at C:/msys/home/User/qemu/hw/apic_common.c:110
110     {
(gdb) bt
#0  0x0053cde8 in apic_report_irq_delivered (delivered=0)
    at C:/msys/home/User/qemu/hw/apic_common.c:110
#1  0x0053b9eb in apic_set_irq (s=0x1d7aff8, vector_num=<optimized out>,
    trigger_mode=0) at C:/msys/home/User/qemu/hw/apic.c:390
#2  0x0053b990 in apic_update_irq (s=0x1d7aff8)
    at C:/msys/home/User/qemu/hw/apic.c:376
#3  apic_update_irq (s=0x1d7aff8) at C:/msys/home/User/qemu/hw/apic.c:367
#4  0x0053b990 in apic_update_irq (s=0x1d7aff8)
    at C:/msys/home/User/qemu/hw/apic.c:376
#5  apic_update_irq (s=0x1d7aff8) at C:/msys/home/User/qemu/hw/apic.c:367
#6  0x0053b990 in apic_update_irq (s=0x1d7aff8)
    at C:/msys/home/User/qemu/hw/apic.c:376
#7  apic_update_irq (s=0x1d7aff8) at C:/msys/home/User/qemu/hw/apic.c:367
...

still happens in v1.0-2147-g51006bb.
always reproducible with ttylinux 14.0 iso.

Triaging old bug tickets ... can you somehow still reproduce this problem with the latest version of QEMU (currently v2.9), or could we close this ticket nowadays?

[Expired for QEMU because there has been no activity for 60 days.]