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[PATCH] ntsync: Fix reference leaks in the remaining create ioctls.
by Elizabeth Figura Jan. 16, 2025

Jan. 16, 2025

When ntsync_obj_get_fd() fails, we free the ntsync object but forget to drop the "file" member. This was fixed for semaphores in 0e7d523b5f7a23b1dc6ceceb04e31a60e9e3321d, but that commit did not fix the similar leak for events and mutexes, since they were part of patches not yet in the mainline kernel. Fix those cases. Fixes: 5bc2479a3585b "ntsync: Introduce NTSYNC_IOC_CREATE_MUTEX." Fixes: 4c7404b9c2b57 "ntsync: Introduce NTSYNC_IOC_CREATE_EVENT." Signed-off-by: Elizabeth Figura <zfigura(a)codeweavers.com> --- drivers/misc/ntsync.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c index b6441e978974..055395cde42b 100644 --- a/drivers/misc/ntsync.c +++ b/drivers/misc/ntsync.c @@ -781,7 +781,7 @@ static int ntsync_create_mutex(struct ntsync_device *dev, void __user *argp) mutex->u.mutex.owner = args.owner; fd = ntsync_obj_get_fd(mutex); if (fd < 0) - kfree(mutex); + ntsync_free_obj(mutex); return fd; } @@ -802,7 +802,7 @@ static int ntsync_create_event(struct ntsync_device *dev, void __user *argp) event->u.event.signaled = args.signaled; fd = ntsync_obj_get_fd(event); if (fd < 0) - kfree(event); + ntsync_free_obj(event); return fd; } base-commit: 0e7d523b5f7a23b1dc6ceceb04e31a60e9e3321d -- 2.45.2

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Upcoming vkd3d 1.15 release
by Henri Verbeet Jan. 15, 2025

Jan. 15, 2025

Hi all, As previously announced, the planned release date for vkd3d 1.15 is February 19. That means the public API will become frozen a week from now on January 22, and we'll go into feature freeze on February 5. As usual, if you're an upstream vkd3d developer, please do the following: - Keep an eye on Bugzilla for any reported regressions. - Review any API changes since the previous release. - Verify that all vkd3d tests pass on your hardware/setup, and please send fixes if they don't. - Review and improve the documentation. If you're a downstream user of vkd3d, please test your applications for any regressions, and file bug reports if you find any. The planned release date for vkd3d 1.16 is May 21. Regards, Henri

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Wine staging 10.0-rc5 release
by Alistair Leslie-Hughes Jan. 11, 2025

Jan. 11, 2025

Binary packages for various distributions will be available from: https://www.winehq.org/download Summary since last release * Rebased to current wine 10.0-rc5 (347 patches are applied to wine vanilla) Upstreamed (Either directly from staging or fixed with a similar patch). * None Removed (No longer required). * None Added: * None Updated: * vkd3d-latest Where can you help * Run Steam/Battle.net/GOG/UPlay/Epic * Test your favorite game. * Test your favorite applications. * Improve staging patches and get them accepted upstream. * Suggest patches to be included in staging. As always, if you find a bug, please report it via https://bugs.winehq.org Best Regards Alistair.

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Re: [PATCH v7 00/30] NT synchronization primitive driver
by Elizabeth Figura Jan. 9, 2025

Jan. 9, 2025

On Tuesday, 7 January 2025 13:42:41 CST Peter Zijlstra wrote: > On Tue, Jan 07, 2025 at 06:06:03PM +0100, Greg Kroah-Hartman wrote: > > Given a lack of complaints, I've now applied this to my testing tree. > > Thanks for sticking with it! > > Right, so I acked v6, which wasn't preserved. The v7 changes are minor > and seem fine (IIRc I even suggested them some very very long time ago). I wasn't sure it was fine to preserve the ack across changes (even if they were the ones you suggested) and decided to err on the safe side. Thank you for the review!

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Wine staging 10.0-rc4 release
by Alistair Leslie-Hughes Jan. 4, 2025

Jan. 4, 2025

Binary packages for various distributions will be available from: https://www.winehq.org/download Summary since last release * Rebased to current wine 10.0-rc4 (346 patches are applied to wine vanilla) Upstreamed (Either directly from staging or fixed with a similar patch). * None Removed (No longer required). * None Added: * None Updated: * None Where can you help * Run Steam/Battle.net/GOG/UPlay/Epic * Test your favorite game. * Test your favorite applications. * Improve staging patches and get them accepted upstream. * Suggest patches to be included in staging. As always, if you find a bug, please report it via https://bugs.winehq.org Best Regards Alistair.

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Wine staging 10.0-rc3 release
by Alistair Leslie-Hughes Dec. 21, 2024

Dec. 21, 2024

Right subject this time. Binary packages for various distributions will be available from: https://www.winehq.org/download Summary since last release * Rebased to current wine 10.0-rc3 (346 patches are applied to wine vanilla) Upstreamed (Either directly from staging or fixed with a similar patch). * None Removed (No longer required). * None Added: * None Updated: * vkd3d-latest Where can you help * Run Steam/Battle.net/GOG/UPlay/Epic * Test your favorite game. * Test your favorite applications. * Improve staging patches and get them accepted upstream. * Suggest patches to be included in staging. As always, if you find a bug, please report it via https://bugs.winehq.org Best Regards Alistair.

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Wine staging 10.0-rc2 release
by Alistair Leslie-Hughes Dec. 21, 2024

Dec. 21, 2024

Binary packages for various distributions will be available from: https://www.winehq.org/download Summary since last release * Rebased to current wine 10.0-rc2 (346 patches are applied to wine vanilla) Upstreamed (Either directly from staging or fixed with a similar patch). * None Removed (No longer required). * None Added: * None Updated: * vkd3d-latest Where can you help * Run Steam/Battle.net/GOG/UPlay/Epic * Test your favorite game. * Test your favorite applications. * Improve staging patches and get them accepted upstream. * Suggest patches to be included in staging. As always, if you find a bug, please report it via https://bugs.winehq.org Best Regards Alistair.

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Wine staging 10.0-rc2 release
by Alistair Leslie-Hughes Dec. 14, 2024

Dec. 14, 2024

Binary packages for various distributions will be available from: https://www.winehq.org/download Summary since last release * Rebased to current wine 10.0-rc2 (349 patches are applied to wine vanilla) Upstreamed (Either directly from staging or fixed with a similar patch). * None Removed (No longer required). * None Added: * None Updated: * vkd3d-latest Where can you help * Run Steam/Battle.net/GOG/UPlay/Epic * Test your favorite game. * Test your favorite applications. * Improve staging patches and get them accepted upstream. * Suggest patches to be included in staging. As always, if you find a bug, please report it via https://bugs.winehq.org Best Regards Alistair.

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[PATCH v7 00/30] NT synchronization primitive driver
by Elizabeth Figura Dec. 13, 2024

Dec. 13, 2024

This patch series implements a new char misc driver, /dev/ntsync, which is used to implement Windows NT synchronization primitives. NT synchronization primitives are unique in that the wait functions both are vectored, operate on multiple types of object with different behaviour (mutex, semaphore, event), and affect the state of the objects they wait on. This model is not compatible with existing kernel synchronization objects or interfaces, and therefore the ntsync driver implements its own wait queues and locking. This patch series is rebased against the "char-misc-next" branch of gregkh/char-misc.git. == Background == The Wine project emulates the Windows API in user space. One particular part of that API, namely the NT synchronization primitives, have historically been implemented via RPC to a dedicated "kernel" process. However, more recent applications use these APIs more strenuously, and the overhead of RPC has become a bottleneck. The NT synchronization APIs are too complex to implement on top of existing primitives without sacrificing correctness. Certain operations, such as NtPulseEvent() or the "wait-for-all" mode of NtWaitForMultipleObjects(), require direct control over the underlying wait queue, and implementing a wait queue sufficiently robust for Wine in user space is not possible. This proposed driver, therefore, implements the problematic interfaces directly in the Linux kernel. This driver was presented at Linux Plumbers Conference 2023. For those further interested in the history of synchronization in Wine and past attempts to solve this problem in user space, a recording of the presentation can be viewed here: https://www.youtube.com/watch?v=NjU4nyWyhU8 == Performance == The performance measurements described below are copied from earlier versions of the patch set. While some of the code has changed, I do not currently anticipate that it has changed drastically enough to affect those measurements. The gain in performance varies wildly depending on the application in question and the user's hardware. For some games NT synchronization is not a bottleneck and no change can be observed, but for others frame rate improvements of 50 to 150 percent are not atypical. The following table lists frame rate measurements from a variety of games on a variety of hardware, taken by users Dmitry Skvortsov, FuzzyQuils, OnMars, and myself: Game Upstream ntsync improvement =========================================================================== Anger Foot 69 99 43% Call of Juarez 99.8 224.1 125% Dirt 3 110.6 860.7 678% Forza Horizon 5 108 160 48% Lara Croft: Temple of Osiris 141 326 131% Metro 2033 164.4 199.2 21% Resident Evil 2 26 77 196% The Crew 26 51 96% Tiny Tina's Wonderlands 130 360 177% Total War Saga: Troy 109 146 34% =========================================================================== == Patches == The intended semantics of the patches are broadly intended to match those of the corresponding Windows functions. For those not already familiar with the Windows functions (or their undocumented behaviour), patch 27/28 provides a detailed specification, and individual patches also include a brief description of the API they are implementing. The patches making use of this driver in Wine can be retrieved or browsed here: https://repo.or.cz/wine/zf.git/shortlog/refs/heads/ntsync7 == Previous versions == Changes from v6: * rename NTSYNC_IOC_SEM_POST to NTSYNC_IOC_SEM_RELEASE (matching the NT terminology instead of POSIX), * change object creation ioctls to return the fds directly in the return value instead of through the args struct, which simplifies the API a bit. * Link to v6: https://lore.kernel.org/lkml/20241209185904.507350-1-zfigura(a)codeweavers.… * Link to v5: https://lore.kernel.org/lkml/20240519202454.1192826-1-zfigura(a)codeweavers… * Link to v4: https://lore.kernel.org/lkml/20240416010837.333694-1-zfigura(a)codeweavers.… * Link to v3: https://lore.kernel.org/lkml/20240329000621.148791-1-zfigura(a)codeweavers.… * Link to v2: https://lore.kernel.org/lkml/20240219223833.95710-1-zfigura(a)codeweavers.c… * Link to v1: https://lore.kernel.org/lkml/20240214233645.9273-1-zfigura(a)codeweavers.co… * Link to RFC v2: https://lore.kernel.org/lkml/20240131021356.10322-1-zfigura(a)codeweavers.c… * Link to RFC v1: https://lore.kernel.org/lkml/20240124004028.16826-1-zfigura(a)codeweavers.c… Elizabeth Figura (30): ntsync: Return the fd from NTSYNC_IOC_CREATE_SEM. ntsync: Rename NTSYNC_IOC_SEM_POST to NTSYNC_IOC_SEM_RELEASE. ntsync: Introduce NTSYNC_IOC_WAIT_ANY. ntsync: Introduce NTSYNC_IOC_WAIT_ALL. ntsync: Introduce NTSYNC_IOC_CREATE_MUTEX. ntsync: Introduce NTSYNC_IOC_MUTEX_UNLOCK. ntsync: Introduce NTSYNC_IOC_MUTEX_KILL. ntsync: Introduce NTSYNC_IOC_CREATE_EVENT. ntsync: Introduce NTSYNC_IOC_EVENT_SET. ntsync: Introduce NTSYNC_IOC_EVENT_RESET. ntsync: Introduce NTSYNC_IOC_EVENT_PULSE. ntsync: Introduce NTSYNC_IOC_SEM_READ. ntsync: Introduce NTSYNC_IOC_MUTEX_READ. ntsync: Introduce NTSYNC_IOC_EVENT_READ. ntsync: Introduce alertable waits. selftests: ntsync: Add some tests for semaphore state. selftests: ntsync: Add some tests for mutex state. selftests: ntsync: Add some tests for NTSYNC_IOC_WAIT_ANY. selftests: ntsync: Add some tests for NTSYNC_IOC_WAIT_ALL. selftests: ntsync: Add some tests for wakeup signaling with WINESYNC_IOC_WAIT_ANY. selftests: ntsync: Add some tests for wakeup signaling with WINESYNC_IOC_WAIT_ALL. selftests: ntsync: Add some tests for manual-reset event state. selftests: ntsync: Add some tests for auto-reset event state. selftests: ntsync: Add some tests for wakeup signaling with events. selftests: ntsync: Add tests for alertable waits. selftests: ntsync: Add some tests for wakeup signaling via alerts. selftests: ntsync: Add a stress test for contended waits. maintainers: Add an entry for ntsync. docs: ntsync: Add documentation for the ntsync uAPI. ntsync: No longer depend on BROKEN. Documentation/userspace-api/index.rst | 1 + Documentation/userspace-api/ntsync.rst | 385 +++++ MAINTAINERS | 9 + drivers/misc/Kconfig | 1 - drivers/misc/ntsync.c | 992 +++++++++++- include/uapi/linux/ntsync.h | 42 +- tools/testing/selftests/Makefile | 1 + .../selftests/drivers/ntsync/.gitignore | 1 + .../testing/selftests/drivers/ntsync/Makefile | 7 + tools/testing/selftests/drivers/ntsync/config | 1 + .../testing/selftests/drivers/ntsync/ntsync.c | 1343 +++++++++++++++++ 11 files changed, 2767 insertions(+), 16 deletions(-) create mode 100644 Documentation/userspace-api/ntsync.rst create mode 100644 tools/testing/selftests/drivers/ntsync/.gitignore create mode 100644 tools/testing/selftests/drivers/ntsync/Makefile create mode 100644 tools/testing/selftests/drivers/ntsync/config create mode 100644 tools/testing/selftests/drivers/ntsync/ntsync.c base-commit: cdd30ebb1b9f36159d66f088b61aee264e649d7a -- 2.45.2

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Clarification regarding clean room guidelines and headers / prototypes
by Fabian Maurer Dec. 13, 2024

Dec. 13, 2024

Hello, Not sure who, apart from Alexandre, could help here, but I wanted to ask for some clarification on the clean room guidelines (https://gitlab.winehq.org/ wine/wine/-/wikis/Clean-Room-Guidelines) Let's say we want to add a few new COM classes / interfaces from WinRT for some program. What is the official way to get those header definitions? Copy paste from the official SDK? Or worse, there is some windows adjacent dlls that only contain typelibs - can we decompile those typelibs to get the COM interface definitions? Or how about undocumented functions that are documented by third parties? ROS is off limits, all others as well? There are for example C# projects that provide P/Invoke definitions of otherwise undocumented functions. I think it would be helpful for the wiki to be updated with a bit of clarification. Thanks in advance, Regards, Fabian Maurer

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