From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 628A4C46467 for ; Tue, 27 Dec 2022 20:37:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232036AbiL0UhS (ORCPT ); Tue, 27 Dec 2022 15:37:18 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37856 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232387AbiL0Uf5 (ORCPT ); Tue, 27 Dec 2022 15:35:57 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DA44CDF6F; Tue, 27 Dec 2022 12:34:09 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 7AD30B811F9; Tue, 27 Dec 2022 20:34:08 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 87736C433D2; Tue, 27 Dec 2022 20:34:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1672173247; bh=rI6R7y2PesWCHbqBzXxTOdib5qkgoi3AQAfKoyr5yAs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=IsdNZ/A2jdwUWyjCwps3e5KXGtQGrmDleG2pCjYSRRx40h4gJRr8caCDWqgBMbv+X vOonvpGM/Y5lwGBPAHGitGWpntJl7RH5pMe25zPbztgHLtsDuAtstHCrFAXp+euLTG 3cVc/zHXw66nHl1nyC9OEcw6CCua8AmmZb9eXSx0Iu34Nlb+F6y0Y3qJDs3iX4+rKi jSEwS2dbRuEV61Wz3mpxhbfjGkeQk380df+xEdO4eOOXUrK3DZCdYr69ZKtNzsR2Fr mGWH4JS68JFrT9k4z74RU0C3HvFZcs25QQlimyt7somyMftUVAzF1DGRxJNg62vbsf dQZrO5k2o4C5Q== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Tetsuo Handa , syzot , Konstantin Komarov , Sasha Levin , ntfs3@lists.linux.dev Subject: [PATCH AUTOSEL 6.0 16/27] fs/ntfs3: Use __GFP_NOWARN allocation at ntfs_fill_super() Date: Tue, 27 Dec 2022 15:33:31 -0500 Message-Id: <20221227203342.1213918-16-sashal@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20221227203342.1213918-1-sashal@kernel.org> References: <20221227203342.1213918-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Tetsuo Handa [ 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 [1] Reported-by: syzot Signed-off-by: Tetsuo Handa Signed-off-by: Konstantin Komarov Signed-off-by: Sasha Levin --- fs/ntfs3/super.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/ntfs3/super.c b/fs/ntfs3/super.c index 0c8dd4ff5d7a..bc6a41d254ba 100644 --- a/fs/ntfs3/super.c +++ b/fs/ntfs3/super.c @@ -1141,7 +1141,7 @@ static int ntfs_fill_super(struct super_block *sb, struct fs_context *fc) goto put_inode_out; } bytes = inode->i_size; - sbi->def_table = t = kmalloc(bytes, GFP_NOFS); + sbi->def_table = t = kmalloc(bytes, GFP_NOFS | __GFP_NOWARN); if (!t) { err = -ENOMEM; goto put_inode_out; -- 2.35.1