This series fixes a race condition segfault when using iothreads with blockjobs.
The qemu iotest in this series is a reproducer, as is the reproducer script attached in this bug report: https://bugzilla.redhat.com/show_bug.cgi?id=1508708 There are two additional patches to try and catch this sort of scenario with an abort, before a segfault or memory corruption occurs. Jeff Cody (5): blockjob: do not allow coroutine double entry or entry-after-completion coroutine: abort if we try to enter coroutine scheduled for another ctx coroutines: abort if we try to enter a still-sleeping coroutine qemu-iotests: add option in common.qemu for mismatch only qemu-iotest: add test for blockjob coroutine race condition blockjob.c | 9 ++-- include/qemu/coroutine_int.h | 5 +++ tests/qemu-iotests/200 | 99 ++++++++++++++++++++++++++++++++++++++++++ tests/qemu-iotests/200.out | 14 ++++++ tests/qemu-iotests/common.qemu | 8 +++- tests/qemu-iotests/group | 1 + util/async.c | 7 +++ util/qemu-coroutine-sleep.c | 3 ++ util/qemu-coroutine.c | 14 ++++++ 9 files changed, 156 insertions(+), 4 deletions(-) create mode 100755 tests/qemu-iotests/200 create mode 100644 tests/qemu-iotests/200.out -- 2.9.5
