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=-8.7 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 ABD8DC12002 for ; Fri, 16 Jul 2021 10:57:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7E3FD6128D for ; Fri, 16 Jul 2021 10:57:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232103AbhGPLAE (ORCPT ); Fri, 16 Jul 2021 07:00:04 -0400 Received: from mail-io1-f70.google.com ([209.85.166.70]:57041 "EHLO mail-io1-f70.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239587AbhGPLAD (ORCPT ); Fri, 16 Jul 2021 07:00:03 -0400 Received: by mail-io1-f70.google.com with SMTP id p19-20020a5d8b930000b02904a03acf5d82so5737453iol.23 for ; Fri, 16 Jul 2021 03:57:08 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=nozPs/V48VMIkx5cQQACEBpxEU2di5c6d9qVAx+/xvw=; b=ogoLww4vi1RZQY40veLVU8RjoNKGO+F8lI55yaurzdyc8AFnbJiBisx8rOPeN+86jf Hymssg1lAN/psmuo7WlN+k+mu6KGxOOuBHzWKwaB1+cf4EFGlbl6FhEznu+yJoXbW2TR A6VbZeN4mRb7v97ydDdksn9ifB5sy7WqiEcCYkbakqIM0Rl2TBo1v61jWYhGGYV4nx5+ O0BbRlvmEFDeBn513SvckpzEdy9rT5tBLIi+74rJG8sfSdTalxa++nX81KPiplmKa1px gGXMzMXUmIbANt7NYSxoRjThotKaT6iIMoloTUAg8y/zG090ZLXreL9+wWucyxpmmkqk DUPw== X-Gm-Message-State: AOAM532BgR71avJ9auYk3fXXuKKw1oNtA2CpaImHMuBA6Z/cEb+A4z0+ MNvcHb6296VlW63gvU/BRqYl1VBumXFRu00dvX+6czPnHU9u X-Google-Smtp-Source: ABdhPJyTy0iXWl8RJXyIzfZpi59tIQJEQ45cIod4s8+6N8E93vF+M6CIgoFTe7HDDMF458Qyqqsy8CbTGhxOG9DJY2R6GnjDw9h5 MIME-Version: 1.0 X-Received: by 2002:a92:2a05:: with SMTP id r5mr5739495ile.69.1626433027959; Fri, 16 Jul 2021 03:57:07 -0700 (PDT) Date: Fri, 16 Jul 2021 03:57:07 -0700 In-Reply-To: <632ddc1b-b664-3e60-90be-03bdf556aa49@gmail.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000e1f38205c73b72cc@google.com> Subject: Re: [syzbot] INFO: task hung in io_sq_thread_park (2) From: syzbot To: asml.silence@gmail.com, axboe@kernel.dk, io-uring@vger.kernel.org, linux-kernel@vger.kernel.org, mingo@kernel.org, mingo@redhat.com, peterz@infradead.org, rostedt@goodmis.org, syzkaller-bugs@googlegroups.com, will@kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: WARNING in io_uring_cancel_generic ctx ffff8880467ee000 submitted 1, dismantled 0, crefs 0, inflight 1, fallbacks 0, poll1 0, poll2 0, tw 0, hash 0, cs 0, issued 1 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 18216 at fs/io_uring.c:9142 io_dump fs/io_uring.c:9142 [inline] WARNING: CPU: 0 PID: 18216 at fs/io_uring.c:9142 io_uring_cancel_generic+0x608/0xea0 fs/io_uring.c:9198 Modules linked in: CPU: 0 PID: 18216 Comm: iou-sqp-18211 Not tainted 5.14.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:io_dump fs/io_uring.c:9142 [inline] RIP: 0010:io_uring_cancel_generic+0x608/0xea0 fs/io_uring.c:9198 Code: 48 c1 ea 03 80 3c 02 00 0f 85 d5 02 00 00 48 8b 44 24 10 48 8b a8 98 00 00 00 48 39 6c 24 08 0f 85 02 03 00 00 e8 f8 97 92 ff <0f> 0b e9 af fe ff ff e8 ec 97 92 ff 48 8b 74 24 20 b9 08 00 00 00 RSP: 0018:ffffc9000afefc40 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff88802a09d4c0 RCX: 0000000000000000 RDX: ffff88802a09d4c0 RSI: ffffffff81e2f0b8 RDI: ffff8880467ee510 RBP: ffff8880462fb788 R08: 0000000000000081 R09: 0000000000000000 R10: ffffffff815d066e R11: 0000000000000000 R12: ffff8880462fa458 R13: ffffc9000afefd40 R14: 0000000000000001 R15: 0000000000000000 FS: 00007f9295c2d700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1c3f1a3000 CR3: 0000000018755000 CR4: 0000000000350ee0 Call Trace: io_sq_thread+0xaac/0x1250 fs/io_uring.c:6932 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 18216 Comm: iou-sqp-18211 Not tainted 5.14.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:105 panic+0x306/0x73d kernel/panic.c:232 __warn.cold+0x35/0x44 kernel/panic.c:606 report_bug+0x1bd/0x210 lib/bug.c:199 handle_bug+0x3c/0x60 arch/x86/kernel/traps.c:239 exc_invalid_op+0x14/0x40 arch/x86/kernel/traps.c:259 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:566 RIP: 0010:io_dump fs/io_uring.c:9142 [inline] RIP: 0010:io_uring_cancel_generic+0x608/0xea0 fs/io_uring.c:9198 Code: 48 c1 ea 03 80 3c 02 00 0f 85 d5 02 00 00 48 8b 44 24 10 48 8b a8 98 00 00 00 48 39 6c 24 08 0f 85 02 03 00 00 e8 f8 97 92 ff <0f> 0b e9 af fe ff ff e8 ec 97 92 ff 48 8b 74 24 20 b9 08 00 00 00 RSP: 0018:ffffc9000afefc40 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff88802a09d4c0 RCX: 0000000000000000 RDX: ffff88802a09d4c0 RSI: ffffffff81e2f0b8 RDI: ffff8880467ee510 RBP: ffff8880462fb788 R08: 0000000000000081 R09: 0000000000000000 R10: ffffffff815d066e R11: 0000000000000000 R12: ffff8880462fa458 R13: ffffc9000afefd40 R14: 0000000000000001 R15: 0000000000000000 io_sq_thread+0xaac/0x1250 fs/io_uring.c:6932 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Kernel Offset: disabled Rebooting in 86400 seconds.. Tested on: commit: 81fee56e io_uring: add syz debug info git tree: https://github.com/isilence/linux.git syztest_sqpoll_hang console output: https://syzkaller.appspot.com/x/log.txt?x=12bb485c300000 kernel config: https://syzkaller.appspot.com/x/.config?x=cfe2c0e42bc9993d dashboard link: https://syzkaller.appspot.com/bug?extid=ac957324022b7132accf compiler: