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 540BAC433EF for ; Fri, 26 Nov 2021 02:29:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1357546AbhKZCcc (ORCPT ); Thu, 25 Nov 2021 21:32:32 -0500 Received: from mail-il1-f198.google.com ([209.85.166.198]:49026 "EHLO mail-il1-f198.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1357544AbhKZCab (ORCPT ); Thu, 25 Nov 2021 21:30:31 -0500 Received: by mail-il1-f198.google.com with SMTP id k9-20020a056e02156900b002a1acf9a52dso517498ilu.15 for ; Thu, 25 Nov 2021 18:27:18 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:date:message-id:subject:from:to; bh=45uPTSsSeC7INwogeODFyAWYEWL4QFRc6aK09OveqRo=; b=OK+lev4f3aUEFb1IFF3GT0qoEbbzG8EVYHgb3iAUexKMa9pqXavVHZCbRyyW593m+F J6Fb5Jb4X84RWdWU7E2caPo5+twH73GjWjwvumjod4uSt8qZsvuEhzBdJCV5UgXJ+S6w 35tgqIi5EyhTgoEV4lVPFqIqAwwEKZiD3A4bXKz+v1YAWMMVP/sVIzihJwI9kDohNH8Z DCr7zMe8zLEX16YXxIuTh2LOp97//r+4Ssn5dyrsYU5vjy2/N0AuXc5299my6tMnhstf nmxL5OY8GOaj2FR3801pGqtR58nBo/Eb95zBbvSvJ2z61FpaYsqzdlyKwviQcjGJ4gyM cKMA== X-Gm-Message-State: AOAM530G816h3wMVXHZkmQkYOjjA3EMW1XK2ARP2QG8iuQj16tKnkjvb bQLJkfBc51tQav8uOvPWoWbVjz9yY1TswpZ/Fkar75u7YeST X-Google-Smtp-Source: ABdhPJzu4CskSLXpwGLUySyPVA2Fh/pD4B7YAugYKeAx2wkrOxQMHMfsUFQcLgZNeUgH6LKNHcCgiR7rU4tgQTz+DcHc1sSBoNWY MIME-Version: 1.0 X-Received: by 2002:a05:6638:2484:: with SMTP id x4mr37970229jat.51.1637893638504; Thu, 25 Nov 2021 18:27:18 -0800 (PST) Date: Thu, 25 Nov 2021 18:27:18 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000080c60105d1a7d4b5@google.com> Subject: [syzbot] WARNING in io_try_cancel_userdata (2) From: syzbot To: asml.silence@gmail.com, axboe@kernel.dk, io-uring@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 40c93d7fff6f Merge tag 'x86-urgent-2021-11-21' of git://gi.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=13cac4deb00000 kernel config: https://syzkaller.appspot.com/x/.config?x=152798d01fe6adcd dashboard link: https://syzkaller.appspot.com/bug?extid=ab0cfe96c2b3cd1c1153 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+ab0cfe96c2b3cd1c1153@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 1 PID: 20 at fs/io_uring.c:6269 io_try_cancel_userdata+0x3c5/0x640 fs/io_uring.c:6269 Modules linked in: CPU: 1 PID: 20 Comm: kworker/1:0 Not tainted 5.16.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events io_fallback_req_func RIP: 0010:io_try_cancel_userdata+0x3c5/0x640 fs/io_uring.c:6269 Code: 44 89 f0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 e8 92 db 95 ff 65 48 8b 04 25 40 70 02 00 49 39 c6 0f 84 a0 fd ff ff e8 7b db 95 ff <0f> 0b 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48 c1 ea 03 80 3c 02 RSP: 0018:ffffc90000da7bc8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff88803a80d3c0 RCX: 0000000000000000 RDX: ffff888011a38000 RSI: ffffffff81e1bde5 RDI: 0000000000000003 RBP: 1ffff920001b4f7a R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff81e1bb37 R11: 0000000000000000 R12: 0000000000000000 R13: ffff88807eaf7000 R14: ffff88803b203a00 R15: ffff88803a80d420 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2d3db37718 CR3: 000000001c339000 CR4: 0000000000350ee0 Call Trace: io_req_task_link_timeout+0x6b/0x1e0 fs/io_uring.c:6886 io_fallback_req_func+0xf9/0x1ae fs/io_uring.c:1334 process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298 worker_thread+0x658/0x11f0 kernel/workqueue.c:2445 kthread+0x405/0x4f0 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.