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5142397c79330aab9bef3230991c8ac0c251110f
xemu/util
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Paolo Bonzini 5142397c79 async: access bottom half flags with qatomic_read 
Running test-aio-multithread under TSAN reveals data races on bh->flags.
Because bottom halves may be scheduled or canceled asynchronously,
without taking a lock, adjust aio_compute_bh_timeout() and aio_ctx_check()
to use a relaxed read to access the flags.

Use an acquire load to ensure that anything that was written prior to
qemu_bh_schedule() is visible.

Closes: https://gitlab.com/qemu-project/qemu/-/issues/2749
Closes: https://gitlab.com/qemu-project/qemu/-/issues/851
Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2025-10-14 11:03:59 +02:00
..
aio-posix.c
aio-posix: Adjust polling time also for new handlers
2025-03-13 17:57:23 +01:00
aio-posix.h
aio-posix: Separate AioPolledEvent per AioHandler
2025-03-13 17:57:23 +01:00
aio-wait.c
…
aio-win32.c
error: Kill @error_warn
2025-10-01 08:33:24 +02:00
aiocb.c
…
async.c
async: access bottom half flags with qatomic_read
2025-10-14 11:03:59 +02:00
atomic64.c
…
base64.c
…
bitmap.c
…
bitops.c
…
block-helpers.c
block: Adjust check_block_size() signature
2024-10-18 15:03:35 +02:00
block-helpers.h
block: Adjust check_block_size() signature
2024-10-18 15:03:35 +02:00
buffer.c
…
bufferiszero.c
util/bufferiszero: Split out host include files
2024-06-19 12:47:11 -07:00
cacheflush.c
util/cacheflush.c: Update cache flushing mechanism for Emscripten
2025-05-06 16:02:04 +02:00
chardev_open.c
util/char_dev: Add open_cdev()
2023-12-19 19:03:38 +01:00
compatfd.c
…
coroutine-sigaltstack.c
osdep: set _FORTIFY_SOURCE=2 when optimization is enabled
2023-10-04 09:52:06 -04:00
coroutine-ucontext.c
coroutine-ucontext: Save fake stack for pooled coroutine
2024-01-22 11:00:12 -05:00
coroutine-wasm.c
util: Add coroutine backend for emscripten
2025-05-06 16:02:04 +02:00
coroutine-windows.c
…
cpuinfo-aarch64.c
util/cpuinfo: Make use of elf_aux_info(3) on OpenBSD
2024-07-30 07:59:23 +10:00
cpuinfo-i386.c
cpuinfo/i386: Detect GFNI as an AVX extension
2025-09-04 09:49:23 +02:00
cpuinfo-loongarch.c
util/loongarch64: Detect LASX vector support
2024-06-19 10:55:12 -07:00
cpuinfo-ppc.c
util/cpuinfo: Make use of elf_aux_info(3) on OpenBSD
2024-07-30 07:59:23 +10:00
cpuinfo-riscv.c
util/cpuinfo-riscv: Detect Zbs
2025-01-16 20:57:17 -08:00
crc32c.c
…
crc-ccitt.c
…
cutils.c
util/cutils: Remove unused qemu_get_exec_dir
2024-09-20 10:04:34 +03:00
dbus.c
…
defer-call.c
util/defer-call: move defer_call() to util/
2023-10-31 15:41:42 +01:00
drm.c
…
envlist.c
envlist: Remove unused envlist_parse
2024-09-20 10:00:27 +03:00
error-report.c
Remove glib compatibility code that is not required anymore
2024-05-14 12:46:39 +02:00
error.c
error: Kill @error_warn
2025-10-01 08:33:24 +02:00
event_notifier-posix.c
treewide: use qemu_set_blocking instead of g_unix_set_fd_nonblocking
2025-09-19 12:46:07 +01:00
event_notifier-win32.c
…
event.c
qemu-thread: Use futex for QemuEvent on Windows
2025-06-06 14:32:55 +02:00
fdmon-epoll.c
include: Move QemuLockCnt APIs to their own header
2024-10-15 15:16:17 +01:00
fdmon-io_uring.c
remove unnecessary casts from uintptr_t
2024-01-18 10:43:51 +01:00
fdmon-poll.c
aio: remove aio_disable_external() API
2023-05-30 17:37:26 +02:00
fifo8.c
fifo8: introduce fifo8_peek() function
2024-09-13 20:11:13 +02:00
filemonitor-inotify.c
util/filemonitor-inotify.c: spelling fix: kenel
2023-11-15 12:06:05 +03:00
filemonitor-stub.c
…
getauxval.c
util/cpuinfo: Make use of elf_aux_info(3) on OpenBSD
2024-07-30 07:59:23 +10:00
guest-random.c
util/guest-random: Clean up global variable shadowing
2023-10-06 13:27:48 +02:00
hbitmap.c
qapi/crypto: Rename QCryptoHashAlgorithm to *Algo, and drop prefix
2024-09-10 14:02:16 +02:00
hexdump.c
hw/vmapple/aes: Introduce aes engine
2025-03-04 14:45:34 +01:00
host-utils.c
…
id.c
…
int128.c
…
interval-tree.c
util/interval-tree: Check root for null in interval_tree_iter_first
2023-08-09 09:26:32 -07:00
iov.c
util/iov: Do not assert offset is in iov
2025-03-10 17:07:16 +08:00
iova-tree.c
vhost-iova-tree, svq: Implement GPA->IOVA & partial IOVA->HVA trees
2025-02-21 07:18:42 -05:00
keyval.c
qapi: Move include/qapi/qmp/ to include/qobject/
2025-02-10 15:33:16 +01:00
lockcnt.c
qemu-thread: Use futex if available for QemuLockCnt
2025-06-06 14:32:55 +02:00
log.c
log: change qemu_loglevel to unsigned
2025-10-01 11:22:07 -04:00
main-loop.c
treewide: use qemu_set_blocking instead of g_unix_set_fd_nonblocking
2025-09-19 12:46:07 +01:00
memalign.c
…
memfd.c
physmem: fd-based shared memory
2025-01-29 11:43:04 -03:00
meson.build
qemu-thread: Use futex for QemuEvent on Windows
2025-06-06 14:32:55 +02:00
mmap-alloc.c
…
module.c
overall: Remove unnecessary g_strdup_printf() calls
2025-02-14 08:49:06 +03:00
notify.c
notify: pass error to notifier with return
2024-02-28 11:31:28 +08:00
nvdimm-utils.c
…
osdep.c
migration: Add direct-io parameter
2024-06-21 09:47:22 -03:00
oslib-posix.c
oslib: qemu_clear_cloexec
2025-10-03 09:48:02 -04:00
oslib-win32.c
oslib: qemu_clear_cloexec
2025-10-03 09:48:02 -04:00
path.c
…
qdist.c
util: spelling fixes
2023-08-31 19:47:43 +02:00
qemu-co-shared-resource.c
util/co-shared-resource: Remove unused co_try_get_from_shres
2024-09-30 10:53:18 +03:00
qemu-co-timeout.c
…
qemu-config.c
qapi: Move include/qapi/qmp/ to include/qobject/
2025-02-10 15:33:16 +01:00
qemu-coroutine-io.c
aio: remove aio_disable_external() API
2023-05-30 17:37:26 +02:00
qemu-coroutine-lock.c
atomics: eliminate mb_read/mb_set
2023-06-06 09:42:14 +02:00
qemu-coroutine-sleep.c
…
qemu-coroutine.c
util/coroutine: fix -Werror=maybe-uninitialized false-positive
2024-10-02 16:14:29 +04:00
qemu-option.c
qapi: Move include/qapi/qmp/ to include/qobject/
2025-02-10 15:33:16 +01:00
qemu-print.c
…
qemu-progress.c
…
qemu-sockets.c
util/qemu-sockets: Introduce inet socket options controlling TCP keep-alive
2025-05-22 11:24:41 +01:00
qemu-thread-common.h
…
qemu-thread-posix.c
qemu-thread: Use futex for QemuEvent on Windows
2025-06-06 14:32:55 +02:00
qemu-thread-win32.c
qemu-thread: Use futex for QemuEvent on Windows
2025-06-06 14:32:55 +02:00
qemu-timer-common.c
…
qemu-timer.c
include/exec: Split out icount.h
2025-04-23 14:08:44 -07:00
qht.c
cleanup: Drop pointless return at end of function
2025-04-24 09:33:42 +02:00
qsp.c
system/cpus: rename qemu_mutex_lock_iothread() to bql_lock()
2024-01-08 10:45:43 -05:00
qtree.c
…
range.c
util/range.c: spelling fix: inbetween
2023-11-15 12:06:05 +03:00
rcu.c
util/rcu.c: replace FSF postal address with licenses URL
2025-06-26 00:42:37 +02:00
readline.c
util/readline: Add C-u shortcut
2024-06-19 12:42:03 +02:00
reserved-region.c
util/reserved-region: Add new ReservedRegion helpers
2023-11-03 09:20:31 +01:00
s390x_pci_mmio.c
util: Add functions for s390x mmio read/write
2025-05-08 10:03:07 -04:00
selfmap.c
util/selfmap: Use dev_t and ino_t in MapInfo
2023-09-01 13:34:03 -07:00
stats64.c
…
sys_membarrier.c
…
systemd.c
…
thread-context.c
qom: Make InterfaceInfo[] uses const
2025-04-25 17:00:41 +02:00
thread-pool.c
thread-pool: Implement generic (non-AIO) pool support
2025-03-06 06:47:33 +01:00
throttle.c
throttle: use THROTTLE_MAX/ARRAY_SIZE for hard code
2023-08-29 10:49:24 +02:00
timed-average.c
license: Simplify GPL-2.0-or-later license descriptions
2024-09-20 10:11:59 +03:00
trace-events
thread-pool: Rename AIO pool functions to *_aio() and data types to *Aio
2025-03-06 06:47:33 +01:00
trace.h
…
transactions.c
…
unicode.c
…
userfaultfd.c
util/userfaultfd: Remove unused uffd_poll_events
2024-10-08 15:28:55 -04:00
uuid.c
util/uuid: Add UUID_STR_LEN definition
2023-11-03 09:20:31 +01:00
vfio-helpers.c
include/system: Move exec/memory.h to system/memory.h
2025-04-23 14:08:21 -07:00
vhost-user-server.c
util/vhost-user-server: vu_message_read(): improve error handling
2025-09-19 12:46:07 +01:00
yank.c
qapi: Fix dangling references to docs/devel/qapi-code-gen.txt
2024-01-26 07:04:53 +01:00