qemu/util
Jeff Cody 6133b39f3c coroutine: abort if we try to schedule or enter a pending coroutine
The previous patch fixed a race condition, in which there were
coroutines being executing doubly, or after coroutine deletion.

We can detect common scenarios when this happens, and print an error
message and abort before we corrupt memory / data, or segfault.

This patch will abort if an attempt to enter a coroutine is made while
it is currently pending execution, either in a specific AioContext bh,
or pending execution via a timer.  It will also abort if a coroutine
is scheduled, before a prior scheduled run has occurred.

We cannot rely on the existing co->caller check for recursive re-entry
to catch this, as the coroutine may run and exit with
COROUTINE_TERMINATE before the scheduled coroutine executes.

(This is the scenario that was occurring and fixed in the previous
patch).

This patch also re-orders the Coroutine struct elements in an attempt to
optimize caching.

Signed-off-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
2017-11-21 11:58:07 -05:00
..
acl.c
aio-posix.c aio-posix: drop QEMU_AIO_POLL_MAX_NS env var 2017-11-06 11:04:38 +00:00
aio-win32.c
aiocb.c
async.c coroutine: abort if we try to schedule or enter a pending coroutine 2017-11-21 11:58:07 -05:00
base64.c
bitmap.c bitmap: provide to_le/from_le helpers 2017-09-22 14:11:25 +02:00
bitops.c bitmap: remove BITOP_WORD() 2017-09-22 14:11:23 +02:00
buffer.c
bufferiszero.c
cacheinfo.c
compatfd.c
coroutine-sigaltstack.c
coroutine-ucontext.c
coroutine-win32.c
crc32c.c
cutils.c Convert remaining single line fprintf() to warn_report() 2017-09-19 16:20:49 +02:00
envlist.c
error.c
event_notifier-posix.c
event_notifier-win32.c
fifo8.c
getauxval.c
hbitmap.c hbitmap: Rename serialization_granularity to serialization_align 2017-10-06 16:28:58 +02:00
hexdump.c
host-utils.c
id.c
iohandler.c
iov.c
keyval.c
lockcnt.c
log.c
main-loop.c
Makefile.objs util: move qemu_real_host_page_size/mask to osdep.h 2017-10-10 09:45:00 -07:00
memfd.c
mmap-alloc.c
module.c
notify.c
osdep.c osdep: introduce qemu_mprotect_rwx/none 2017-10-24 13:53:42 -07:00
oslib-posix.c oslib-posix: Use sysctl(2) call to resolve exec_dir on NetBSD 2017-11-02 16:19:34 +00:00
oslib-win32.c
pagesize.c util: move qemu_real_host_page_size/mask to osdep.h 2017-10-10 09:45:00 -07:00
path.c
qdist.c
qemu-config.c config: qemu_config_parse() return number of config groups 2017-10-09 23:21:52 -03:00
qemu-coroutine-io.c
qemu-coroutine-lock.c
qemu-coroutine-sleep.c coroutine: abort if we try to schedule or enter a pending coroutine 2017-11-21 11:58:07 -05:00
qemu-coroutine.c coroutine: abort if we try to schedule or enter a pending coroutine 2017-11-21 11:58:07 -05:00
qemu-error.c
qemu-openpty.c
qemu-option.c
qemu-progress.c
qemu-sockets.c sockets: avoid leak of listen file descriptor 2017-11-07 14:10:20 +00:00
qemu-thread-posix.c util/qemu-thread-posix.c: Replace OS ifdefs with CONFIG_HAVE_SEM_TIMEDWAIT 2017-09-26 09:06:02 +03:00
qemu-thread-win32.c
qemu-timer-common.c
qemu-timer.c
qht.c
range.c
rcu.c
readline.c
stats64.c util/stats64: Fix min/max comparisons 2017-11-15 09:34:51 +01:00
systemd.c
thread-pool.c
throttle.c throttle: Assert that bkt->max is valid in throttle_compute_wait() 2017-09-26 14:46:23 +02:00
timed-average.c
trace-events
unicode.c
uri.c
uuid.c