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cfd86ef7e8
This allows the VFS to not trip over anonymous inodes and we can add asserts based on the mode into the vfs. When we report it to userspace we can simply hide the mode to avoid regressions. I've audited all direct callers of alloc_anon_inode() and only secretmen overrides i_mode and i_op inode operations but it already uses a regular file. Link: https://lore.kernel.org/20250407-work-anon_inode-v1-1-53a44c20d44e@kernel.org Fixes: af153bb63a336 ("vfs: catch invalid modes in may_open()") Reviewed-by: Jeff Layton <jlayton@kernel.org> Cc: stable@vger.kernel.org # all LTS kernels Reported-by: syzbot+5d8e79d323a13aa0b248@syzkaller.appspotmail.com Closes: https://lore.kernel.org/all/67ed3fb3.050a0220.14623d.0009.GAE@google.com Signed-off-by: Christian Brauner <brauner@kernel.org>
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.