fs/ntfs3: Use __GFP_NOWARN allocation at wnd_init()

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[ Upstream commit 0d0f659bf7 ]

syzbot is reporting too large allocation at wnd_init() [1], for a crafted
filesystem can become wnd->nwnd close to UINT_MAX. Add __GFP_NOWARN in
order to avoid too large allocation warning, than exhausting memory by
using kvcalloc().

Link: https://syzkaller.appspot.com/bug?extid=fa4648a5446460b7b963 [1]
Reported-by: syzot <syzbot+fa4648a5446460b7b963@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>

...

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Tetsuo Handa 2022-10-02 23:39:15 +09:00 • committed by Greg Kroah-Hartman

parent d7ce7bb688

commit abd2ee2cf4

1 changed files with 1 additions and 1 deletions

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fs/ntfs3/bitmap.c

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