Re: [Qemu-devel] intermittent make check failure: "tcg_handle_interrupt: assertion failed: (qemu_mutex_iothread_locked())"

[Mark Cave-Ayland]

On 28/02/17 21:35, Mark Cave-Ayland wrote:
> On 28/02/17 21:28, Thomas Huth wrote:
> 
>>> Maybe worth mentioning that the prom-env test for sparc64 has just been
>>> enabled a couple of commits ago (6b591ad613010f13). There was an issue
>>> with that test for the sparc64 target last year, but IIRC it only
>>> affected 32-bit hosts and has been fixed, so I think/hope this is a
>>> different issue now...
>>
>> OK, I think this is definitively not related to the prom-env test, but
>> to MTTCG (or something else in TCG): I can reproduce this problem
>> reliably when I run QEMU in s390 mode with the Moon Buggy disk image
>> from the QEMU advent calendar
>> (http://www.qemu-advent-calendar.org/2014/download/s390-moon-buggy.tar.xz):
>>
>> qemu-system-s390x -nographic -kernel s390-bb.kernel \
>>                   -initrd s390-moon-buggy.initrd
>>
>> ... starts the kernel, but aborts very soon with:
>>
>> ERROR:qemu/translate-common.c:34:tcg_handle_interrupt: assertion failed:
>> (qemu_mutex_iothread_locked())
>> Aborted (core dumped)
> 
> FWIW I've spent some time running the "make check" regression tests
> locally this evening and I can't seem to reproduce the failure here on
> my normal qemu-system-ppc/qemu-system-sparc/qemu-system-sparc64 setup.

However I can reproduce it consistently booting my OpenBIOS test images
under qemu-system-sparc:

$ ./qemu-system-sparc -cdrom debian-40r4a-sparc-netinst.iso -boot d
qemu-system-sparc: -cdrom
/home/build/src/qemu/image/sparc32/debian-40r4a-sparc-netinst.iso:
warning: bus=0,unit=2 is deprecated with this machine type
**
ERROR:/home/build/src/qemu/git/qemu/translate-common.c:34:tcg_handle_interrupt:
assertion failed: (qemu_mutex_iothread_locked())
Aborted


ATB,

Mark.