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 X-Spam-Level: X-Spam-Status: No, score=-3.7 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 31ECBC433EF for ; Thu, 9 Sep 2021 00:09:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 163186109F for ; Thu, 9 Sep 2021 00:09:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1348090AbhIIAK3 (ORCPT ); Wed, 8 Sep 2021 20:10:29 -0400 Received: from mail-io1-f70.google.com ([209.85.166.70]:46035 "EHLO mail-io1-f70.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1348028AbhIIAK0 (ORCPT ); Wed, 8 Sep 2021 20:10:26 -0400 Received: by mail-io1-f70.google.com with SMTP id d23-20020a056602281700b005b5b34670c7so29807ioe.12 for ; Wed, 08 Sep 2021 17:09:18 -0700 (PDT) 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=QPkkC/1Bh97x6PmNJUT4Hxi4h89kOXJouRdSjI8zf0Y=; b=3c1ROD7EazdCzH3K9VMtxz8L+PV2uvKC4y7kOMRCy0HpwcT3/kQmFJvYQ4XzFx7daP sPjISsK7DA4vL3QjZT8ucA5NqnNWRoEvUFlO8cpfX0K87krxbvhAM2Vaqyi1uTX9Ib6G /dTWgN+E69JnJKSowRU02lgbT7V5lsjkJdwdGkRP/tw+Rs11toYhfxcZiEvOvSR7XrJI gm5YD+X7p2Or6DKjicyzYw4/IchSsx76X22GqRal6fxAOBWPhQDp1Wk5/um0gCY/r6fs Clp9PMgupMkwzrEZmAzDcRMcJISkEd2Wt7R5YY4Yjd4XEB13zX1aIkQWNxhms5gdGum9 qHWg== X-Gm-Message-State: AOAM533Pej3wdENgi51FhYVmt8s2BOzlgsWum2nm1epsQ8AMaZyWDljY IHwA8XmqoZ6S2aAcMlp/UFBzjSW9wWinti1O8q8YCNVpl49V X-Google-Smtp-Source: ABdhPJyIRrR7Hdh76tEY/CQM34AZbdIzkcE2dCcxDMT8REmvqwSZmWUL0+MwVYvj7CDDhTO1UpGXgtA61SS7uhITCwSXAc5H4RRX MIME-Version: 1.0 X-Received: by 2002:a02:cebc:: with SMTP id z28mr185001jaq.49.1631146157527; Wed, 08 Sep 2021 17:09:17 -0700 (PDT) Date: Wed, 08 Sep 2021 17:09:17 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000004bda3905cb84cfc0@google.com> Subject: [syzbot] WARNING in io_wq_submit_work (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: 4b93c544e90e thunderbolt: test: split up test cases in tb_.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=10b7836d300000 kernel config: https://syzkaller.appspot.com/x/.config?x=ac2f9cc43f6b17e4 dashboard link: https://syzkaller.appspot.com/bug?extid=bc2d90f602545761f287 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.1 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10e8ce0b300000 The issue was bisected to: commit 3146cba99aa284b1d4a10fbd923df953f1d18035 Author: Jens Axboe Date: Wed Sep 1 17:20:10 2021 +0000 io-wq: make worker creation resilient against signals bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=11098e0d300000 final oops: https://syzkaller.appspot.com/x/report.txt?x=13098e0d300000 console output: https://syzkaller.appspot.com/x/log.txt?x=15098e0d300000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+bc2d90f602545761f287@syzkaller.appspotmail.com Fixes: 3146cba99aa2 ("io-wq: make worker creation resilient against signals") ------------[ cut here ]------------ WARNING: CPU: 1 PID: 8804 at fs/io_uring.c:1164 req_ref_get fs/io_uring.c:1164 [inline] WARNING: CPU: 1 PID: 8804 at fs/io_uring.c:1164 io_wq_submit_work+0x272/0x300 fs/io_uring.c:6731 Modules linked in: CPU: 1 PID: 8804 Comm: syz-executor.0 Not tainted 5.14.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:req_ref_get fs/io_uring.c:1164 [inline] RIP: 0010:io_wq_submit_work+0x272/0x300 fs/io_uring.c:6731 Code: e8 d3 21 91 ff 83 fb 7f 76 1b e8 89 1a 91 ff be 04 00 00 00 4c 89 ef e8 bc 62 d8 ff f0 ff 45 a4 e9 41 fe ff ff e8 6e 1a 91 ff <0f> 0b eb dc e8 65 1a 91 ff 4c 89 e7 e8 ad dc fb ff 48 85 c0 49 89 RSP: 0018:ffffc900027b7ae8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 000000000000007f RCX: 0000000000000000 RDX: ffff8880209cb900 RSI: ffffffff81e506d2 RDI: 0000000000000003 RBP: ffff888071824978 R08: 000000000000007f R09: ffff88807182491f R10: ffffffff81e506ad R11: 0000000000000000 R12: ffff8880718248c0 R13: ffff88807182491c R14: ffff888071824918 R15: 0000000000100000 FS: 0000000002b68400(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055f33208ca50 CR3: 0000000071827000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: io_run_cancel fs/io-wq.c:809 [inline] io_acct_cancel_pending_work.isra.0+0x2a9/0x5e0 fs/io-wq.c:950 io_wqe_cancel_pending_work+0x98/0x130 fs/io-wq.c:968 io_wq_destroy fs/io-wq.c:1185 [inline] io_wq_put_and_exit+0x7d1/0xc70 fs/io-wq.c:1198 io_uring_clean_tctx fs/io_uring.c:9607 [inline] io_uring_cancel_generic+0x5fe/0x740 fs/io_uring.c:9687 io_uring_files_cancel include/linux/io_uring.h:16 [inline] do_exit+0x265/0x2a30 kernel/exit.c:780 do_group_exit+0x125/0x310 kernel/exit.c:922 __do_sys_exit_group kernel/exit.c:933 [inline] __se_sys_exit_group kernel/exit.c:931 [inline] __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:931 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665f9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffdd0a294a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 000000000000001e RCX: 00000000004665f9 RDX: 000000000041940b RSI: ffffffffffffffbc RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000001b2be20070 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 00007ffdd0a295a0 --- 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. For information about bisection process see: https://goo.gl/tpsmEJ#bisection syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches