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 B6799C07E99 for ; Mon, 12 Jul 2021 09:28:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 914CC6101D for ; Mon, 12 Jul 2021 09:28:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1379889AbhGLJbN (ORCPT ); Mon, 12 Jul 2021 05:31:13 -0400 Received: from mail-io1-f71.google.com ([209.85.166.71]:41923 "EHLO mail-io1-f71.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1379869AbhGLJbG (ORCPT ); Mon, 12 Jul 2021 05:31:06 -0400 Received: by mail-io1-f71.google.com with SMTP id b13-20020a056602330db02905101d652a35so11412558ioz.8 for ; Mon, 12 Jul 2021 02:28:18 -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:message-id:subject:from:to; bh=RqEuL8434mkrR62CcVotYB74q2KSRIID0fO56L4zDhw=; b=pu1NTzdAEBLsfAligWgzwqroWDBmrgzmarBLSjUMCBAwP4ED9qCoLCUGohGQgl6LPW ImaZjGTmpNaykGm+OMxQ9XL8eMWatpv96kfiKytjIIRh23DiJ1sUq2q1MoA4IoZRjRhi 2MfOqIP7WlxrZ9U1FwqF+8zWueEfWiUWsgVpwZgDrRn6SrAoZczV1Rxn5AsndLtpspB7 kV4DZP+/wU459mXdx9ZgKHjSL+32t3v9xLVf6pBxBsMo/mYHlKEGgpF9oxeiyUQ2cYsz EvUtF5IkkWZEkXVDR5CMTog8xi+DzeY0HVYygfEdJOz7un8ggsxl/xmj9Lc2xUecWSfQ JSew== X-Gm-Message-State: AOAM530ZKmGoO8ylOEg2+422jqseRR8zvjtouS5nj9jN7cy9x5DxjEt0 ZCtYePw/Ap5vPKYGgd3DcLERZYzjsErTryPa0+w6/34gC47G X-Google-Smtp-Source: ABdhPJxYCtcbgCqEfRSlWV44wvQRTMpOBo4rvqW47TCzvOkoh35x56g7oOGFpGjzNwZX9WFCUal/e4XtYpIX7Z4Oq2lhCpU5KPd+ MIME-Version: 1.0 X-Received: by 2002:a05:6602:146:: with SMTP id v6mr38780269iot.5.1626082097781; Mon, 12 Jul 2021 02:28:17 -0700 (PDT) Date: Mon, 12 Jul 2021 02:28:17 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000d0615505c6e9bd7f@google.com> Subject: [syzbot] kernel BUG in io_queue_async_work 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: e2f74b13 Add linux-next specific files for 20210708 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=14fc6fb4300000 kernel config: https://syzkaller.appspot.com/x/.config?x=59e1e3bbc3afca75 dashboard link: https://syzkaller.appspot.com/bug?extid=d50e4f20cfad4510ec22 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+d50e4f20cfad4510ec22@syzkaller.appspotmail.com ------------[ cut here ]------------ kernel BUG at fs/io_uring.c:1293! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 18789 Comm: kworker/0:10 Not tainted 5.13.0-next-20210708-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_queue_async_work+0x539/0x5f0 fs/io_uring.c:1293 Code: 89 be 89 00 00 00 48 c7 c7 00 8a 9a 89 c6 05 28 5f 77 0b 01 e8 be e9 06 07 e9 6e ff ff ff e8 be 1e 95 ff 0f 0b e8 b7 1e 95 ff <0f> 0b e8 b0 1e 95 ff 0f 0b e9 1a fd ff ff e8 d4 2f db ff e9 47 fb RSP: 0018:ffffc900032efba8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff88802840c800 RCX: 0000000000000000 RDX: ffff888082e09c80 RSI: ffffffff81e07d49 RDI: ffff8880224da498 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000043736500 R10: ffffffff81e222ff R11: 0000000000000000 R12: ffff8880782e78c0 R13: 0000000000000019 R14: ffff88802840c8b0 R15: ffff8880782e7918 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe2796bd8c CR3: 000000000b68e000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __io_queue_sqe+0x913/0xf10 fs/io_uring.c:6444 io_req_task_submit+0x100/0x120 fs/io_uring.c:2020 io_fallback_req_func+0x81/0xb0 fs/io_uring.c:2437 process_one_work+0x98d/0x1630 kernel/workqueue.c:2276 worker_thread+0x658/0x11f0 kernel/workqueue.c:2422 kthread+0x3e5/0x4d0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Modules linked in: ---[ end trace 4d51acadba583174 ]--- RIP: 0010:io_queue_async_work+0x539/0x5f0 fs/io_uring.c:1293 Code: 89 be 89 00 00 00 48 c7 c7 00 8a 9a 89 c6 05 28 5f 77 0b 01 e8 be e9 06 07 e9 6e ff ff ff e8 be 1e 95 ff 0f 0b e8 b7 1e 95 ff <0f> 0b e8 b0 1e 95 ff 0f 0b e9 1a fd ff ff e8 d4 2f db ff e9 47 fb RSP: 0018:ffffc900032efba8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff88802840c800 RCX: 0000000000000000 RDX: ffff888082e09c80 RSI: ffffffff81e07d49 RDI: ffff8880224da498 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000043736500 R10: ffffffff81e222ff R11: 0000000000000000 R12: ffff8880782e78c0 R13: 0000000000000019 R14: ffff88802840c8b0 R15: ffff8880782e7918 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3dee45e000 CR3: 000000002dd4e000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- 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.