From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-io0-f200.google.com (mail-io0-f200.google.com [209.85.223.200]) by kanga.kvack.org (Postfix) with ESMTP id 32AC5800D8 for ; Wed, 24 Jan 2018 13:42:48 -0500 (EST) Received: by mail-io0-f200.google.com with SMTP id r74so4900310iod.15 for ; Wed, 24 Jan 2018 10:42:48 -0800 (PST) Received: from mail-sor-f69.google.com (mail-sor-f69.google.com. [209.85.220.69]) by mx.google.com with SMTPS id s204sor464519iod.326.2018.01.24.10.42.47 for (Google Transport Security); Wed, 24 Jan 2018 10:42:47 -0800 (PST) MIME-Version: 1.0 Date: Wed, 24 Jan 2018 10:42:47 -0800 In-Reply-To: Message-ID: <001a113f932c939af705638a07fd@google.com> Subject: possible deadlock in shmem_file_llseek From: syzbot Content-Type: multipart/mixed; boundary="001a113f932c939ac605638a07fc" Sender: owner-linux-mm@kvack.org List-ID: To: arve@android.com, devel@driverdev.osuosl.org, dvyukov@google.com, gregkh@linuxfoundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, maco@android.com, syzkaller-bugs@googlegroups.com, tkjos@android.com --001a113f932c939ac605638a07fc Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes 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. --001a113f932c939ac605638a07fc Content-Type: text/plain; charset="US-ASCII"; name="patch.diff" Content-Disposition: attachment; filename="patch.diff" Content-Transfer-Encoding: base64 LS0tIGEvZHJpdmVycy9zdGFnaW5nL2FuZHJvaWQvYXNobWVtLmMKKysrIGIvZHJpdmVycy9zdGFn aW5nL2FuZHJvaWQvYXNobWVtLmMKQEAgLTM0Myw3ICszNDMsOSBAQCBzdGF0aWMgbG9mZl90IGFz aG1lbV9sbHNlZWsoc3RydWN0IGZpbGUgKmZpbGUsIGxvZmZfdCBvZmZzZXQsIGludCBvcmlnaW4p CiAJCWdvdG8gb3V0OwogCX0KIAorCW11dGV4X3VubG9jaygmYXNobWVtX211dGV4KTsKIAlyZXQg PSB2ZnNfbGxzZWVrKGFzbWEtPmZpbGUsIG9mZnNldCwgb3JpZ2luKTsKKwltdXRleF9sb2NrKCZh c2htZW1fbXV0ZXgpOwogCWlmIChyZXQgPCAwKQogCQlnb3RvIG91dDsKIAo= --001a113f932c939ac605638a07fc-- -- 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