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blk_mq_alloc_request_hctx() allocates a driver request directly, unlike its blk_mq_alloc_request() counterpart. It also crashes because it doesn't update the tags->rqs map. Fix it by making it allocate a scheduler request. Reported-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Omar Sandoval <osandov@fb.com> Signed-off-by: Jens Axboe <axboe@fb.com> Tested-by: Sagi Grimberg <sagi@grimberg.me>
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.