From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf0-f198.google.com (mail-pf0-f198.google.com [209.85.192.198]) by kanga.kvack.org (Postfix) with ESMTP id B547A800D8 for ; Wed, 24 Jan 2018 13:44:13 -0500 (EST) Received: by mail-pf0-f198.google.com with SMTP id u65so3669566pfd.7 for ; Wed, 24 Jan 2018 10:44:13 -0800 (PST) Received: from mail-sor-f65.google.com (mail-sor-f65.google.com. [209.85.220.65]) by mx.google.com with SMTPS id k190sor1481860pfc.26.2018.01.24.10.44.12 for (Google Transport Security); Wed, 24 Jan 2018 10:44:12 -0800 (PST) MIME-Version: 1.0 In-Reply-To: <001a113f932c939af705638a07fd@google.com> References: <001a113f932c939af705638a07fd@google.com> From: Dmitry Vyukov Date: Wed, 24 Jan 2018 19:43:51 +0100 Message-ID: Subject: Re: possible deadlock in shmem_file_llseek Content-Type: multipart/mixed; boundary="001a1142a7e0a2b15905638a0c5c" Sender: owner-linux-mm@kvack.org List-ID: To: syzbot Cc: arve@android.com, devel@driverdev.osuosl.org, Greg Kroah-Hartman , Hugh Dickins , LKML , Linux-MM , maco@android.com, syzkaller-bugs@googlegroups.com, tkjos@android.com --001a1142a7e0a2b15905638a0c5c Content-Type: text/plain; charset="UTF-8" On Wed, Jan 24, 2018 at 7:42 PM, syzbot wrote: > Hello, > > syzbot tried to test the proposed patch but build/boot failed: > > patch is already applied > > > Tested on https://github.com/joelagnel/linux.git/test-ashmem commit > 32f813bb0d06c1e189ac336f8c3c7377f85c71f0 (Wed Jan 24 01:45:04 2018 +0000) > ashmem: Fix lockdep issue during llseek > > compiler: gcc (GCC) 7.1.1 20170620 > Patch is attached. Right. We probably want: #syz test: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master --001a1142a7e0a2b15905638a0c5c Content-Type: application/octet-stream; name=patch Content-Disposition: attachment; filename=patch Content-Transfer-Encoding: base64 X-Attachment-Id: f_jctf46141 ZGlmZiAtLWdpdCBhL2RyaXZlcnMvc3RhZ2luZy9hbmRyb2lkL2FzaG1lbS5jIGIvZHJpdmVycy9z dGFnaW5nL2FuZHJvaWQvYXNobWVtLmMKaW5kZXggMGY2OTVkZjE0YzlkLi4yNDg5ODNjZjJkYjEg MTAwNjQ0Ci0tLSBhL2RyaXZlcnMvc3RhZ2luZy9hbmRyb2lkL2FzaG1lbS5jCisrKyBiL2RyaXZl cnMvc3RhZ2luZy9hbmRyb2lkL2FzaG1lbS5jCkBAIC0zNDMsNyArMzQzLDkgQEAgc3RhdGljIGxv ZmZfdCBhc2htZW1fbGxzZWVrKHN0cnVjdCBmaWxlICpmaWxlLCBsb2ZmX3Qgb2Zmc2V0LCBpbnQg b3JpZ2luKQogCQlnb3RvIG91dDsKIAl9CiAKKwltdXRleF91bmxvY2soJmFzaG1lbV9tdXRleCk7 CiAJcmV0ID0gdmZzX2xsc2Vlayhhc21hLT5maWxlLCBvZmZzZXQsIG9yaWdpbik7CisJbXV0ZXhf bG9jaygmYXNobWVtX211dGV4KTsKIAlpZiAocmV0IDwgMCkKIAkJZ290byBvdXQ7CiAK --001a1142a7e0a2b15905638a0c5c-- -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org