[Qemu-devel] qemu-system-s390x tests/boot-serial-test intermittent failure

[Peter Maydell]

Hi; qemu-system-s390x seems to have an intermittent failure at
the moment -- it's been causing our Travis builds to flap. I actually
caught it doing this on one of my local test builds (which happens
to be aarch64 but I don't think that matters, since Travis is doing
x86 builds):

while  QTEST_QEMU_BINARY=s390x-softmmu/qemu-system-s390x
QTEST_QEMU_IMG=qemu-img MALLOC_PERTURB_=${MALLOC_PERTURB_:-$((RANDOM %
255 + 1))} gtester -k --verbose -m=quick tests/boot-serial-test ; do
true; done
 TEST: tests/boot-serial-test... (pid=1122)
  /s390x/boot-serial/s390-ccw-virtio:                                  OK
PASS: tests/boot-serial-test
TEST: tests/boot-serial-test... (pid=1135)
  /s390x/boot-serial/s390-ccw-virtio:                                  OK
[skip lots more successes]
TEST: tests/boot-serial-test... (pid=1582)
  /s390x/boot-serial/s390-ccw-virtio:
Broken pipe
FAIL
GTester: last random seed: R02Se94f36f305f2edd8391a22749ec91143
(pid=1635)
FAIL: tests/boot-serial-test

Any ideas?
thanks
-- PMM