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Elena Reshetova says: ==================== v3 net generic subsystem refcount conversions Changes in v3: Rebased on top of the net-next tree. Changes in v2: No changes in patches apart from rebases, but now by default refcount_t = atomic_t (*) and uses all atomic standard operations unless CONFIG_REFCOUNT_FULL is enabled. This is a compromise for the systems that are critical on performance (such as net) and cannot accept even slight delay on the refcounter operations. This series, for core network subsystem components, replaces atomic_t reference counters with the new refcount_t type and API (see include/linux/refcount.h). By doing this we prevent intentional or accidental underflows or overflows that can led to use-after-free vulnerabilities. These patches contain only generic net pieces. Other changes will be sent separately. The patches are fully independent and can be cherry-picked separately. The big patches, such as conversions for sock structure, need a very detailed look from maintainers: refcount managing is quite complex in them and while it seems that they would benefit from the change, extra checking is needed. The biggest corner issue is the fact that refcount_inc() does not increment from zero. If there are no objections to the patches, please merge them via respective trees. * The respective change is currently merged into -next as "locking/refcount: Create unchecked atomic_t implementation". ==================== Signed-off-by: David S. Miller <davem@davemloft.net> |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.