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75fa2dadb7
[ Upstream commit678d92b612] My previous bugfix addressed an API inconsistency found by syzbot, and it correctly fixed the issue on x86-64 machines, which now behave correctly for both native and compat tasks. Unfortunately, John found that the patch broke compat mode on all other architectures, as they can no longer rely on the VIDIOC_DQEVENT_TIME32 code from the native handler as a fallback in the compat code. The best way I can see for addressing this is to generalize the VIDIOC_DQEVENT32_TIME32 code from x86 and use that for all architectures, leaving only the VIDIOC_DQEVENT32 variant as x86 specific. The original code was trying to be clever and use the same conversion helper for native 32-bit code and compat mode, but that turned out to be too obscure so even I missed that bit I had introduced myself when I made the fix. Fixes:c344f07aa1("media: v4l2-core: ignore native time32 ioctls on 64-bit") Reported-by: John Stultz <john.stultz@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Tested-by: John Stultz <john.stultz@linaro.org> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.