fs/ntfs3: Use __GFP_NOWARN allocation at ntfs_fill_super()
authorTetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Sun, 2 Oct 2022 14:54:11 +0000 (23:54 +0900)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 12 Jan 2023 10:58:45 +0000 (11:58 +0100)
commita9847a11b683784d78893a8c8c07e5ceeda8b1c6
treec1bcf6bd8e5b846935ff98cfd2ef7b86a63c80c0
parentabd2ee2cf42f7fe5bb49c0d86e7d540765b0fbae
fs/ntfs3: Use __GFP_NOWARN allocation at ntfs_fill_super()

[ Upstream commit 59bfd7a483da36bd202532a3d9ea1f14f3bf3aaf ]

syzbot is reporting too large allocation at ntfs_fill_super() [1], for a
crafted filesystem can contain bogus inode->i_size. Add __GFP_NOWARN in
order to avoid too large allocation warning, than exhausting memory by
using kvmalloc().

Link: https://syzkaller.appspot.com/bug?extid=33f3faaa0c08744f7d40
Reported-by: syzot <syzbot+33f3faaa0c08744f7d40@syzkaller.appspotmail.com>
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
fs/ntfs3/super.c