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If a file size has bits 0x410 = ATTR_DIRECTORY | ATTR_REPARSE set then during queryinfo (stat) the file is regarded as a directory and subsequent opens can fail. A simple test example is trying to open any file 1040 bytes long when mounting with "posix" (SMB3.1.1 POSIX/Linux Extensions). The cause of this bug is that Attributes field in smb2_file_all_info struct occupies the same place that EndOfFile field in smb311_posix_qinfo, and sometimes the latter struct is incorrectly processed as if it was the first one. Reported-by: Oleh Nykyforchyn <oleh.nyk@gmail.com> Tested-by: Oleh Nykyforchyn <oleh.nyk@gmail.com> Acked-by: Paulo Alcantara (Red Hat) <pc@manguebit.com> Cc: stable@vger.kernel.org Signed-off-by: Steve French <stfrench@microsoft.com>
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.