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commit47bf225a8dupstream. At btrfs_del_root_ref(), if btrfs_search_slot() returns an error, we end up returning from the function with a value of 0 (success). This happens because the function returns the value stored in the variable 'err', which is 0, while the error value we got from btrfs_search_slot() is stored in the 'ret' variable. So fix it by setting 'err' with the error value. Fixes:8289ed9f93("btrfs: replace the BUG_ON in btrfs_del_root_ref with proper error handling") CC: stable@vger.kernel.org # 5.16+ Reviewed-by: Qu Wenruo <wqu@suse.com> Signed-off-by: Filipe Manana <fdmanana@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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 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.