Received: by 2002:a05:6a10:eb17:0:0:0:0 with SMTP id hx23csp3761885pxb; Tue, 7 Sep 2021 07:05:41 -0700 (PDT) X-Google-Smtp-Source: ABdhPJx359ncLopugJsJRYOonXTk53d8Eee5hptBLNUXKm86c1Go3b+okY11LytOVuUgcaxNtXl3 X-Received: by 2002:a92:d9c2:: with SMTP id n2mr11971661ilq.214.1631023540953; Tue, 07 Sep 2021 07:05:40 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1631023540; cv=none; d=google.com; s=arc-20160816; b=HGO/qRnC/zkl4I8a1YJWKIorNgmHxfObO+EXPP0xIKOP6I+s08vtAi+i94046EJt9+ dflPUnybj8iXx0RqbxJXVL7mkWRVPqNbgwybhstPU2DNkPeaSgvF5PqUpIUUZiZQxm1x 9bHfePeuzqVYzxDb8AaMtXvKtdecEF2xLEp32QSM+5teyAGMxV9Djw0/WyySzs2xLH/g GN69j2LtsicUwtQK+lNCBl6L2g5/J8fENUuEXft+JdGIjiuSoFdxoZNClsZq+mdkWedU JgztegNJlmea3VSRViBYrDR9QlptywhRb5pUKi0JYFe5kJUx+ruT48cqhdCkt8yF2xp7 uVqg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:cc:to:subject:message-id:date:from:in-reply-to :references:mime-version:dkim-signature; bh=VTa4HJUTB1E1dZjIkPVAASLfWDZL+qHUwuV+ayrSHns=; b=G+WaZsvw9976Kth/vz6JQlFdi/svtXSOnIcjJQIR/eohIpgSIRNmNCFziLAmTovfDa q8o6hu/mnGdkgtY9WY1C02+iSnp69+ql+uPKJo9SgiokqnDcuKNqGluUKpWqUdADvIVG qG0YjQrIecvbnbrTuNk/FZSsrcMLvB4AdSBGQAbFH68N7iozls8v90juGmRDfHfpON90 HjBC92NjpxX4o1s5bPrJWbJQewqUnALnBOEbF74lgFMPrJTbUKXEHFsnDzHfliXXsqQz f+I5nzNCz1xH7WrzyYGtSEh3gbbv1YMaBGdWnIaYkbbx53Q/EcGa10oaYW/BrgXCYa/h J1yw== ARC-Authentication-Results: i=1; mx.google.com; dkim=temperror (no key for signature) header.i=@szeredi.hu header.s=google header.b=inAAuNIv; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id i12si11517694ilu.9.2021.09.07.07.05.25; Tue, 07 Sep 2021 07:05:40 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=temperror (no key for signature) header.i=@szeredi.hu header.s=google header.b=inAAuNIv; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229650AbhIGOFM (ORCPT + 99 others); Tue, 7 Sep 2021 10:05:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37122 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230297AbhIGOFJ (ORCPT ); Tue, 7 Sep 2021 10:05:09 -0400 Received: from mail-ua1-x935.google.com (mail-ua1-x935.google.com [IPv6:2607:f8b0:4864:20::935]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 55282C061575 for ; Tue, 7 Sep 2021 07:04:03 -0700 (PDT) Received: by mail-ua1-x935.google.com with SMTP id e20so2098457uam.11 for ; Tue, 07 Sep 2021 07:04:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=szeredi.hu; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=VTa4HJUTB1E1dZjIkPVAASLfWDZL+qHUwuV+ayrSHns=; b=inAAuNIv+kI+xZOAB3EPk8wdYMUUsfj7bQDBPvEPuHgsxCGL2nhDmG3LE+HhdOcbOw lPrIDz7iTpgssZaKhgNCT6GVLHco2hYg/6mfEZyi3olJMD+CwWd7XLW4+7mfs5dKEIZE R9VG+5TLBrqOJb5NQyugyhRxUhAmbs9ehI2Y0= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=VTa4HJUTB1E1dZjIkPVAASLfWDZL+qHUwuV+ayrSHns=; b=Lwrab52HMcHrxmZZyy8VQXlAeHw6/JqAk2A0bHPRWxxmGe5BA4Z0dDDCf+2GWMLRjc 50YvJ1hdja4+BM3TaTKPEH0w5t9QBt+PmPVh1vRSe21/xU/+lIuDVMyGHsag4fHUhBRP GkpJvHq40pGN0hasulgcKTOUJjVFL+3S/KPZpCc7lY23NdTPwNR8yVoPF30ZUa1bYhde pMBx3CyKKU9gkqoPDRCs4URsSyneOJwaxiIACxnwtfbo+QJNQ2aYKfCL+hRkICCjNn3d jLegg5P1jD+iwQsy5K+JdGVNJOrVqkjtxqGBdrkq9uPZk8D67TgI/6LtDKNlxxOsVAo1 mdZg== X-Gm-Message-State: AOAM531PZVidmaO3uZ8Y8ieWnSCLVuQLKst/6wIQ5dTMoemIaiInL7F1 TkLuuue1tJZn+JxdkuQwPf4Cuamrd5W0My7EFkhbyQ== X-Received: by 2002:a9f:234a:: with SMTP id 68mr43793uae.13.1631023442512; Tue, 07 Sep 2021 07:04:02 -0700 (PDT) MIME-Version: 1.0 References: <0000000000006dd93205cad885e5@google.com> In-Reply-To: <0000000000006dd93205cad885e5@google.com> From: Miklos Szeredi Date: Tue, 7 Sep 2021 16:03:49 +0200 Message-ID: Subject: Re: [syzbot] WARNING in ovl_create_real To: syzbot Cc: linux-kernel@vger.kernel.org, overlayfs , syzkaller-bugs Content-Type: multipart/mixed; boundary="000000000000e9785505cb683cfb" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --000000000000e9785505cb683cfb Content-Type: text/plain; charset="UTF-8" #syz test git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master --000000000000e9785505cb683cfb Content-Type: text/x-patch; charset="US-ASCII"; name="ovl-test.patch" Content-Disposition: attachment; filename="ovl-test.patch" Content-Transfer-Encoding: base64 Content-ID: X-Attachment-Id: f_kta57rjk0 ZGlmZiAtLWdpdCBhL2ZzL292ZXJsYXlmcy9kaXIuYyBiL2ZzL292ZXJsYXlmcy9kaXIuYwppbmRl eCAxZmVmYjJiODk2MGUuLjBmNmMxMGVjNTZjMSAxMDA2NDQKLS0tIGEvZnMvb3ZlcmxheWZzL2Rp ci5jCisrKyBiL2ZzL292ZXJsYXlmcy9kaXIuYwpAQCAtMTUwLDYgKzE1MCw5IEBAIHN0YXRpYyBp bnQgb3ZsX21rZGlyX3JlYWwoc3RydWN0IGlub2RlICpkaXIsIHN0cnVjdCBkZW50cnkgKipuZXdk ZW50cnksCiAJaWYgKGxpa2VseSghZF91bmhhc2hlZChkZW50cnkpKSkKIAkJcmV0dXJuIDA7CiAK Kwlwcl9pbmZvKCJ1bmhhc2hlZCBkZW50cnkgYWZ0ZXIgbWtkaXIgKCVzKVxuIiwKKwkJZGVudHJ5 LT5kX3NiLT5zX3R5cGUtPm5hbWUpOworCiAJLyoKIAkgKiB2ZnNfbWtkaXIoKSBtYXkgc3VjY2Vl ZCBhbmQgbGVhdmUgdGhlIGRlbnRyeSBwYXNzZWQKIAkgKiB0byBpdCB1bmhhc2hlZCBhbmQgbmVn YXRpdmUuIElmIHRoYXQgaGFwcGVucywgdHJ5IHRvCkBAIC0yMDksNyArMjEyLDEwIEBAIHN0cnVj dCBkZW50cnkgKm92bF9jcmVhdGVfcmVhbChzdHJ1Y3QgaW5vZGUgKmRpciwgc3RydWN0IGRlbnRy eSAqbmV3ZGVudHJ5LAogCQkJZXJyID0gLUVQRVJNOwogCQl9CiAJfQotCWlmICghZXJyICYmIFdB Uk5fT04oIW5ld2RlbnRyeS0+ZF9pbm9kZSkpIHsKKwlpZiAoIWVyciAmJiAhbmV3ZGVudHJ5LT5k X2lub2RlKSB7CisJCXByX3dhcm4oIm5lZ2F0aXZlIGRlbnRyeSBhZnRlciBta2RpciAoJXMpXG4i LAorCQkJbmV3ZGVudHJ5LT5kX3NiLT5zX3R5cGUtPm5hbWUpOworCQlXQVJOX09OKDEpOwogCQkv KgogCQkgKiBOb3QgcXVpdGUgc3VyZSBpZiBub24taW5zdGFudGlhdGVkIGRlbnRyeSBpcyBsZWdh bCBvciBub3QuCiAJCSAqIFZGUyBkb2Vzbid0IHNlZW0gdG8gY2FyZSBzbyBjaGVjayBhbmQgd2Fy biBoZXJlLgo= --000000000000e9785505cb683cfb--