ec4ab9d2fc
Ensure that the block device pointer in a superblock handle is not null before dereferencing it in bch2_dev_to_fs. The block device pointer may be null when mounting a new bcachefs filesystem given another mounted bcachefs filesystem exists that has at least one device that is offline. Signed-off-by: Dan Robertson <dan@dlrobertson.com> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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 Restructured Text 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.