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b6f807738b
The split between what the host accesses on its flows vs what the target side accesses was flawed. Abort handling didn't properly clear initiator vs target structure cross-reference and locks weren't used for synchronization. Thus, there were issues of freeing structures too soon and access after free. A couple of these existed pre the IN_ISR mods, but when the target upcalls were converted to work items, thus adding delays between the 2 sides of accesses, the problems became pronounced. Resolve by: - tracking io state mainly in the tgt-side io structure. - make the tgt-side io structure released by reference not by code flow. - when changing initiator structures, use locks for synchronization - aborts are clearly tracked for which side saw the abort, and after seeing the abort, cross-references are cleared under lock. Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Christoph Hellwig <hch@lst.de> |
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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.