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[ Upstream commit 589996bf8c459deb5bbc9747d8f1c51658608103 ] d_hash is done while under "rcu-walk" and should not sleep. __get_name() allocates using GFP_KERNEL, having the possibility to sleep when under memory pressure. Change the allocation to GFP_NOWAIT. Reported-by: syzbot+7f71f79bbfb4427b00e1@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=7f71f79bbfb4427b00e1 Fixes: d392e85fd1e8 ("fs/ntfs3: Fix the format of the "nocase" mount option") Signed-off-by: Diogo Jahchan Koike <djahchankoike@gmail.com> Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com> 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.