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=unavailable 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 106CCC433E2 for ; Tue, 15 Sep 2020 08:05:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B34DE20715 for ; Tue, 15 Sep 2020 08:05:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726208AbgIOIFH (ORCPT ); Tue, 15 Sep 2020 04:05:07 -0400 Received: from mail-il1-f206.google.com ([209.85.166.206]:50740 "EHLO mail-il1-f206.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726205AbgIOIEV (ORCPT ); Tue, 15 Sep 2020 04:04:21 -0400 Received: by mail-il1-f206.google.com with SMTP id u20so1950391ilk.17 for ; Tue, 15 Sep 2020 01:04:20 -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=xNbe/yDuQhQzJ3d3+c2AFbxK3UB/SRkgVKKkH8tRHCw=; b=FohEdG9pT+ODeOyKCkOCFZU59LowpDH1ixb6ltyk9VC/nV/PU76X2wIE43pF1BzXOJ 0ZQMEVQp+r3meLr2R0vxjotccPx/7PGSKq2cooFY1IykYmfHsS8jHy37riiwY3gI6+bJ lANApqSgLobLWFgwQEjJcElSfKe53YSx5i4ph3h2+tCa6fpMQUAJxsQ/UMnbekuzFOau aEpgtu6nKRBPsnDtibGhxDun3v0VTUi4iA9h7JhQQxoRR43smGdmsOuagXzk4vuHUZNe 2u3bs3OVDoygTeZSyTS8W0NV8AfhHGMgD4HCVN/RttUANNUDChj7aJF66kZ3ZSSczi/R bacg== X-Gm-Message-State: AOAM531xbQjXpRCn4f7Eo7+APvU7uIGLzhrpGXioQwWchBvY6AnGdaYV ciITDUxQNA2S3nElsU/UA4fSFNdENvfeKl0rgIs/+RAIJqSj X-Google-Smtp-Source: ABdhPJxCiiZsr/IymUa6U1cNW5Kt9Y9Trg/saWU+QvMcydFf6OJ6eCuKKuwuiBYWc3vN65CsWy4ZN3X0yKS0POSIpB/h670CZONZ MIME-Version: 1.0 X-Received: by 2002:a05:6e02:bea:: with SMTP id d10mr14985132ilu.143.1600157060379; Tue, 15 Sep 2020 01:04:20 -0700 (PDT) Date: Tue, 15 Sep 2020 01:04:20 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000002b3ac605af559958@google.com> Subject: general protection fault in cache_clean From: syzbot To: anna.schumaker@netapp.com, bfields@fieldses.org, chuck.lever@oracle.com, davem@davemloft.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-nfs@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com, trond.myklebust@hammerspace.com Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 581cb3a2 Merge tag 'f2fs-for-5.9-rc5' of git://git.kernel... git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=11f5c011900000 kernel config: https://syzkaller.appspot.com/x/.config?x=a9075b36a6ae26c9 dashboard link: https://syzkaller.appspot.com/bug?extid=1594adb1b44e354153d8 compiler: gcc (GCC) 10.1.0-syz 20200507 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+1594adb1b44e354153d8@syzkaller.appspotmail.com general protection fault, probably for non-canonical address 0xdffffc0012e34a9a: 0000 [#1] PREEMPT SMP KASAN KASAN: probably user-memory-access in range [0x00000000971a54d0-0x00000000971a54d7] CPU: 1 PID: 19990 Comm: kworker/1:11 Not tainted 5.9.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events_power_efficient do_cache_clean RIP: 0010:cache_clean+0x119/0x7f0 net/sunrpc/cache.c:444 Code: 81 fb 20 eb 94 8a 0f 84 b8 00 00 00 e8 80 df 33 fa 48 8d 83 40 ff ff ff 48 8d 7b 10 48 89 05 8e 8e 13 06 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 0f 85 e0 05 00 00 48 8d 6c 24 38 4c 8b 63 10 48 89 RSP: 0018:ffffc90008e1fc48 EFLAGS: 00010206 RAX: 0000000012e34a9a RBX: 00000000971a54c0 RCX: ffffffff87406dbb RDX: ffff88804358a000 RSI: ffffffff87406e00 RDI: 00000000971a54d0 RBP: 0000000000000100 R08: 0000000000000001 R09: 0000000000000003 R10: 0000000000000100 R11: 0000000000000000 R12: 0000000000000100 R13: dffffc0000000000 R14: ffff88803451b200 R15: ffff8880ae735600 FS: 0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004ef310 CR3: 000000009ca1b000 CR4: 00000000001526e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_cache_clean+0xd/0xd0 net/sunrpc/cache.c:502 process_one_work+0x94c/0x1670 kernel/workqueue.c:2269 worker_thread+0x64c/0x1120 kernel/workqueue.c:2415 kthread+0x3b5/0x4a0 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Modules linked in: ---[ end trace 4c54bbd0e20d734b ]--- RIP: 0010:cache_clean+0x119/0x7f0 net/sunrpc/cache.c:444 Code: 81 fb 20 eb 94 8a 0f 84 b8 00 00 00 e8 80 df 33 fa 48 8d 83 40 ff ff ff 48 8d 7b 10 48 89 05 8e 8e 13 06 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 0f 85 e0 05 00 00 48 8d 6c 24 38 4c 8b 63 10 48 89 RSP: 0018:ffffc90008e1fc48 EFLAGS: 00010206 RAX: 0000000012e34a9a RBX: 00000000971a54c0 RCX: ffffffff87406dbb RDX: ffff88804358a000 RSI: ffffffff87406e00 RDI: 00000000971a54d0 RBP: 0000000000000100 R08: 0000000000000001 R09: 0000000000000003 R10: 0000000000000100 R11: 0000000000000000 R12: 0000000000000100 R13: dffffc0000000000 R14: ffff88803451b200 R15: ffff8880ae735600 FS: 0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004ef310 CR3: 000000009ca1b000 CR4: 00000000001526e0 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.