From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out203-205-221-173.mail.qq.com (out203-205-221-173.mail.qq.com [203.205.221.173]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7674E202F7E for ; Mon, 16 Dec 2024 12:29:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=203.205.221.173 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734352148; cv=none; b=SrcHq2sMVdoZ52TdLXA433Vlad8YI4DWi5S+lhJYP0HHhkc6nbEZUid15i/7j4haICtATnCebyAg4J0jfIT86GElLEBohUiqzl2Nes7fC8K+BvjQ2XLUZSiG1Dkw/6HjWLZdxxq2CrT71712l4FAZRYXrUNrpEFif3SY6oBCW98= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734352148; c=relaxed/simple; bh=Agq+/2IqJcI3I/fEHbDHdKrFGHxW7N1xS8daFz1TCWw=; h=Message-ID:From:To:Cc:Subject:Date:In-Reply-To:References: MIME-Version; b=CBYfHNKf9NO5iSqKJB61FdF0Iqpj5X4zTeuKoof/crgW2hrNT3Ru3JLtZh1siPjJy5AkW2MGSBlEFa3jJhE3GavS8pPTnNpU0zRgesc9dfWA/QlIN7zgGXmWh7Q62Brer4Z9ScKmUix2OLdGUPVPOUNO0b4Orh/c52D89mpd4E4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=qq.com; spf=pass smtp.mailfrom=qq.com; dkim=pass (1024-bit key) header.d=qq.com header.i=@qq.com header.b=dNT7f16U; arc=none smtp.client-ip=203.205.221.173 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=qq.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=qq.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=qq.com header.i=@qq.com header.b="dNT7f16U" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qq.com; s=s201512; t=1734352139; bh=6C72HlXrEp0n4LrnlXnF0EXzjqB9BepMO3MkkjuCsGE=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=dNT7f16UmhOxmHTOeT4ztJBcKWn5o/xOBnj0X4SNs5AVEQBcGyD2Puze3l8ykCIig iAiYlKuivGJYOyuv6jwoJxcNDTz3LM3329TztB5ai7R2aNfKMQG/3PDTFqOQHz7VPP jJfmnhj4CLq6oUjh5Br6KUVPeo5X90ekDdVHi6GM= Received: from pek-lxu-l1.wrs.com ([114.244.57.34]) by newxmesmtplogicsvrszc13-0.qq.com (NewEsmtp) with SMTP id 7399D6B2; Mon, 16 Dec 2024 20:28:57 +0800 X-QQ-mid: xmsmtpt1734352137tgxqj163y Message-ID: X-QQ-XMAILINFO: MyirvGjpKb1j149Rza7Rs2hqrf5TyWcA+Uwh/FJW+iXEhKkyXCtzf7DTBm8nAq Y++YaL39SOn6TzyKfH2DpYgXaLOESOWYloDMZ98ZOIYEoaG6VR+wghRQJk/efw3rYv/pjjY4kjyU Yp0mcln+GMEY2sn2FjsWcHZjSFftidTEmj8Zzl84L/lE/S1WmuO3yPDQw8z/EvCSiR4BbkvkBiSp 9SAJwahI/YfcSywak8AL+pbqpQa7v/V2T0JQLCSwjwNseZL3xT/I6Z91Mtzi1Vv8JI1L4SXWkPdh oX03Xf4DFLX2tdlS2zUpRQy02kPsjBLWbuz3EePmOfmB8dLWjoUTqmVXHLG/orIc91J/E2ZZeH+g DbPQYzc0aDQDIwx2K08aN8KEt7BOTX9pZeN74n/rQkfdrJEQjgJ+E+yOMwoBK+1sfXeAY91ddUuR ZbRSvmdPiNF+i+PGa0X/TnwcwU9PdGpnxVInFCo+c4LQ6Bg7Mk83kKkBcY3lcBrjVblG0VyTdE4O gnLHBzNX4hAHSTumIrwEk0QhnWgp0ow7EOeFzhLhGJzz7NA8iTB5Pz9JBzQ5lKOzPs9p74CHHH4z oBG7ZikOFZ7SekBuAw7wV4CCI8DcGx/tFm/P9SLOoY7KklLwmOSYriiAcJAyaJFIlAUmb9JgPoxA kdQXGddul34GIcD1MP9HB0SP3Obms+xV2NqL/Q0u0ddIF+qW7t7dDd28blrHWZa8Myeg9GsPAwCl Pn9eY2O1BrJBNAq1nezJCEa1V4zJ7/d4VxektbNjbcUlaviGO1TikDppFaS2k9lUaYBL/7UcE09E awG33Bgpjy8ckPaatzo82RVo7x3iaY8mlFOX2n5nvmg1CHJ8lzEGVcxtc4rx4vwhOAByPm7Dm314 o9bhd4Y/Oh1wU1JD5QVyI= X-QQ-XMRINFO: Mp0Kj//9VHAxr69bL5MkOOs= From: Edward Adam Davis To: syzbot+0aecfd34fb878546f3fd@syzkaller.appspotmail.com Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [trace?] WARNING in bitmap_parse_user Date: Mon, 16 Dec 2024 20:28:58 +0800 X-OQ-MSGID: <20241216122857.2303211-2-eadavis@qq.com> X-Mailer: git-send-email 2.47.0 In-Reply-To: <675f60b1.050a0220.37aaf.0107.GAE@google.com> References: <675f60b1.050a0220.37aaf.0107.GAE@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit #syz test diff --git a/mm/util.c b/mm/util.c index c1c3b06ab4f9..1845d649b171 100644 --- a/mm/util.c +++ b/mm/util.c @@ -302,7 +302,7 @@ void *memdup_user_nul(const void __user *src, size_t len) * cause pagefault, which makes it pointless to use GFP_NOFS * or GFP_ATOMIC. */ - p = kmalloc_track_caller(len + 1, GFP_KERNEL); + p = kmalloc_track_caller(len + 1, GFP_KERNEL | __GFP_NOWARN); if (!p) return ERR_PTR(-ENOMEM);