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6f4cec22c3
The rcu_sync structure's ->gp_count field is always accessed under the protection of that same structure's ->rss_lock field, with the exception of a pair of WARN_ON_ONCE() calls just prior to acquiring that lock in functions rcu_sync_exit() and rcu_sync_dtor(). These lockless accesses are unnecessary and impair KCSAN's ability to catch bugs that might be inserted via other lockless accesses. This commit therefore moves those WARN_ON_ONCE() calls under the lock. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Paul E. McKenney <paulmck@kernel.org> |
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| README | ||
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 reStructuredText 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.