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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 81EB8C433FE for ; Mon, 8 Nov 2021 23:46:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6507460E54 for ; Mon, 8 Nov 2021 23:46:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241005AbhKHXtN (ORCPT ); Mon, 8 Nov 2021 18:49:13 -0500 Received: from mail-il1-f199.google.com ([209.85.166.199]:35396 "EHLO mail-il1-f199.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236862AbhKHXtM (ORCPT ); Mon, 8 Nov 2021 18:49:12 -0500 Received: by mail-il1-f199.google.com with SMTP id k5-20020a92c245000000b0026d8bebbff7so11789544ilo.2 for ; Mon, 08 Nov 2021 15:46:27 -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=kv3eiU/xeC6qSTp+i5dk+Lz5SOGQgV3Fx7iKIxXP+Ko=; b=5Ds8geXr5ysKert5n1BBtnV/98t6zHBL8tbIp9UJUUiS8WfH+Pg2cIES7LTEwkdJ8L h2vDXlbWIIOB7CM2tJGik1hm+Lsx8XrYjQx/Wz23JrF9BCYOJ/yhkpOoBrIPbP5Wuns4 RzzHL8hBmb4DhU+WcnAS1ZP+tN8yUl+qxKSOucE5Mh2naRDt3q7ianvlekz7bJg7qQkq mYJuWE0xcOAZXioHYEHTKURJ+80s9T6nhnGMOV9WYXNBAwbqpxUDWLihysdxs0xqG4Rh nPWT8lGwGgEO7MCoh2Z4bm8qyCLxDJCLsWhTyXEzFyC/G+z1yHu6nELO352RynCtivNc HsNw== X-Gm-Message-State: AOAM532jFxyllV/4ZYrf3BLvYC5NwTtxEDjzPX3D1OEDFqsCiE0NPiUU Y8s4a4UUfyKuexsOw+8UGTi+5WVpkxLBmUstNwErVxzf9Jny X-Google-Smtp-Source: ABdhPJxKDJob30e8ZiyIj7CMUEH5RQL2ew7YaI7b9lZ/58+a4VZz08d1c6oFNNc0icajQEwpedVAVvlaQ9fL+MKqhKnoWNpjRxSJ MIME-Version: 1.0 X-Received: by 2002:a05:6602:2e8c:: with SMTP id m12mr1948251iow.91.1636415187321; Mon, 08 Nov 2021 15:46:27 -0800 (PST) Date: Mon, 08 Nov 2021 15:46:27 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000f2075605d04f9964@google.com> Subject: [syzbot] WARNING in iomap_iter From: syzbot To: djwong@kernel.org, hch@infradead.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-xfs@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 7ddb58cb0eca Merge tag 'clk-for-linus' of git://git.kernel.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=13443b82b00000 kernel config: https://syzkaller.appspot.com/x/.config?x=a30ce238f371e547 dashboard link: https://syzkaller.appspot.com/bug?extid=a8e049cd3abd342936b6 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 userspace arch: i386 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+a8e049cd3abd342936b6@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 0 PID: 1112 at fs/iomap/iter.c:33 iomap_iter_done fs/iomap/iter.c:33 [inline] WARNING: CPU: 0 PID: 1112 at fs/iomap/iter.c:33 iomap_iter+0xdcf/0x11b0 fs/iomap/iter.c:78 Modules linked in: CPU: 0 PID: 1112 Comm: kworker/u4:5 Not tainted 5.15.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: loop0 loop_rootcg_workfn RIP: 0010:iomap_iter_done fs/iomap/iter.c:33 [inline] RIP: 0010:iomap_iter+0xdcf/0x11b0 fs/iomap/iter.c:78 Code: fd ff ff e8 93 9f d1 ff e9 f9 f9 ff ff e8 79 24 8b ff 0f 0b e9 85 f8 ff ff e8 6d 24 8b ff 0f 0b e9 96 f7 ff ff e8 61 24 8b ff <0f> 0b e9 f8 f6 ff ff e8 55 24 8b ff 0f 0b 48 b8 00 00 00 00 00 fc RSP: 0018:ffffc90004d4f680 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffffc90004d4f818 RCX: 0000000000000000 RDX: ffff88801c181d00 RSI: ffffffff81ec9faf RDI: 0000000000000003 RBP: ffffc90004d4f848 R08: 00000fff80000000 R09: 000000000000000c R10: ffffffff81ec96a0 R11: 000000000000003f R12: ffffc90004d4f820 R13: ffffffff80000000 R14: ffffc90004d4f840 R15: ffffc90004d4f888 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc3d2148008 CR3: 00000000307d5000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __iomap_dio_rw+0x6b2/0x1a10 fs/iomap/direct-io.c:588 iomap_dio_rw+0x38/0x90 fs/iomap/direct-io.c:679 ext4_dio_read_iter fs/ext4/file.c:77 [inline] ext4_file_read_iter+0x41c/0x5d0 fs/ext4/file.c:128 call_read_iter include/linux/fs.h:2155 [inline] lo_rw_aio.isra.0+0xa99/0xc90 drivers/block/loop.c:453 do_req_filebacked drivers/block/loop.c:497 [inline] loop_handle_cmd drivers/block/loop.c:1857 [inline] loop_process_work+0x92f/0x1db0 drivers/block/loop.c:1897 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.