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[ Upstream commit 6306ff39a7fcb7e9c59a00e6860b933b71a2ed3e ] When sbi->flag is JFS_NOINTEGRITY in lmLogOpen(), log->bdev_handle can't be inited, so it value will be NULL. Therefore, add the "log ->no_integrity=1" judgment in lbmStartIO() to avoid such problems. Reported-and-tested-by: syzbot+23bc20037854bb335d59@syzkaller.appspotmail.com Signed-off-by: Lizhi Xu <lizhi.xu@windriver.com> Link: https://lore.kernel.org/r/20231009094557.1398920-1-lizhi.xu@windriver.com Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Christian Brauner <brauner@kernel.org> Signed-off-by: Sasha Levin <sashal@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 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.