I think this has been fixed sometime in the past already. Or can you still reproduce this problem with the latest version of QEMU?
** Changed in: qemu Status: New => Incomplete -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1133769 Title: qtest failures leave orphaned qemu processes hanging around Status in QEMU: Incomplete Bug description: If a qtest test case fails, it leaves orphaned qemu processes hanging around. On Fedora 18 with qemu.git as of today ( Feb 26 2013), the patch just forces a test failure ps axwww | grep qemu | grep -v grep $ make check-qtest-x86_64 CC tests/rtc-test.o LINK tests/rtc-test GTESTER check-qtest-x86_64 $ ps axwww | grep qemu | grep -v grep $ patch -p1 < force-test-failure.patch patching file tests/rtc-test.c $ make check-qtest-x86_64 CC tests/rtc-test.o LINK tests/rtc-test GTESTER check-qtest-x86_64 ** ERROR:tests/rtc-test.c:256:bcd_check_time: assertion failed: (0) GTester: last random seed: R02Sf2521dda395a2713128e0cbf86651a21 make: *** [check-qtest-x86_64] Error 1 $ ps axwww | grep qemu | grep -v grep 26258 pts/0 Sl 0:00 x86_64-softmmu/qemu-system-x86_64 -qtest unix:/tmp/qtest-26256.sock,nowait -qtest-log /dev/null -qmp unix:/tmp/qtest-26256.qmp,nowait -pidfile /tmp/qtest-26256.pid -machine accel=qtest -display none -rtc clock=vm The problem is that an assertion failure in a test case causes the test program to exit(2) without hitting the qtest cleanup. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1133769/+subscriptions