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The verifier is allocated on the stack, but the EXCHANGE_ID RPC call was changed to be asynchronous by commit8d89bd70bc. If we interrrupt the call to rpc_wait_for_completion_task(), we can therefore end up transmitting random stack contents in lieu of the verifier. Fixes:8d89bd70bc("NFS setup async exchange_id") Cc: stable@vger.kernel.org # v4.9+ Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
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.