ntfs3: Change to non-blocking allocation in ntfs_d_hash

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[ Upstream commit 589996bf8c ]

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: d392e85fd1 ("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>

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Diogo Jahchan Koike 2024-09-02 14:19:32 -03:00 • committed by Greg Kroah-Hartman

parent fd94986382

commit c556e72cea

1 changed files with 2 additions and 2 deletions

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fs/ntfs3/namei.c

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