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In preparation for writing logs, in nilfs_btree_propagate(), which makes parent and ancestor node blocks dirty starting from a modified data block or b-tree node block, if the starting block does not belong to the b-tree, i.e. is isolated, nilfs_btree_do_lookup() called within the function fails with -ENOENT. In this case, even though -ENOENT is an internal code, it is propagated to the log writer via nilfs_bmap_propagate() and may be erroneously returned to system calls such as fsync(). Fix this issue by changing the error code to -EINVAL in this case, and having the bmap layer detect metadata corruption and convert the error code appropriately. Link: https://lkml.kernel.org/r/20250428173808.6452-3-konishi.ryusuke@gmail.com Fixes: 1f5abe7e7dbc ("nilfs2: replace BUG_ON and BUG calls triggerable from ioctl") Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com> Cc: Wentao Liang <vulab@iscas.ac.cn> Signed-off-by: Andrew Morton <akpm@linux-foundation.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.