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=-9.0 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS 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 8E380C433E0 for ; Tue, 21 Jul 2020 22:43:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 69D412073A for ; Tue, 21 Jul 2020 22:43:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731310AbgGUWnW (ORCPT ); Tue, 21 Jul 2020 18:43:22 -0400 Received: from mail-io1-f70.google.com ([209.85.166.70]:42146 "EHLO mail-io1-f70.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731210AbgGUWnV (ORCPT ); Tue, 21 Jul 2020 18:43:21 -0400 Received: by mail-io1-f70.google.com with SMTP id l18so61640ion.9 for ; Tue, 21 Jul 2020 15:43:20 -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=HpXEP7+7WDpHa02yNTkxAcACkue1pdIoYYR+xtw8X5c=; b=OMn0zCWv95l8VyRvL4De1LbfjKScsW/QXHp8wbm4A3a/xwBkWmlNmiYPnQz4xRod4/ PxeDTl54Qo3/QDoRCvOvZ9uNkkMU+xKsq9TTV5r06wLjyKEQihpImZyhfI/ks3ekyMw/ oysAKO/iuUcTUY2daQSSVOWiGowltV12mdb3qZmUYo6nwnBwOwMgOOJMPq/nYkFrNx1c 1ueK/UTc0nw3ykgubFdg4xl9pNGPTUtfvg61VTz9m1p9X68O4QB9mhPMXYncK1z+wXxJ xYKI3z1bdBDxvDVJnq7K/zS9SH9HBKK/CpqGQVshCNQGHIKdEhxPgvM01bITrslgndS4 h+wQ== X-Gm-Message-State: AOAM531vTdEo9GakfU6POtLwLKBCowKk6vWAKp4B4nBmKJETfKhSmkph UcXYyyN3p455agbtBX4jkxWw7Cp0CdjzSWZr8SyNmoT4Pi52 X-Google-Smtp-Source: ABdhPJwmT3uMd7hY5PNYc+pNKWfBkGcT013rGVEZEdNidSosH2flq9+qBOjMxvgO4rMFNDl1nT6dWYrBHyerO0/7AGHoy9i9o7IQ MIME-Version: 1.0 X-Received: by 2002:a6b:6211:: with SMTP id f17mr30923765iog.34.1595371400264; Tue, 21 Jul 2020 15:43:20 -0700 (PDT) Date: Tue, 21 Jul 2020 15:43:20 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000099052605aafb5923@google.com> Subject: general protection fault in vsock_poll From: syzbot To: davem@davemloft.net, decui@microsoft.com, jhansen@vmware.com, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, sgarzare@redhat.com, stefanha@redhat.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 6a70f89c Merge tag 'nfs-for-5.8-3' of git://git.linux-nfs... git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=172ed85f100000 kernel config: https://syzkaller.appspot.com/x/.config?x=a160d1053fc89af5 dashboard link: https://syzkaller.appspot.com/bug?extid=a61bac2fcc1a7c6623fe compiler: gcc (GCC) 10.1.0-syz 20200507 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1539bcf0900000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+a61bac2fcc1a7c6623fe@syzkaller.appspotmail.com general protection fault, probably for non-canonical address 0xdffffc0000000012: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000090-0x0000000000000097] CPU: 1 PID: 9090 Comm: syz-executor.3 Not tainted 5.8.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:vsock_poll+0x75a/0x8e0 net/vmw_vsock/af_vsock.c:1038 Code: 84 ed 0f 85 c4 00 00 00 e8 b3 33 99 f9 48 8d bb 90 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa c6 44 24 30 00 48 c1 ea 03 <80> 3c 02 00 0f 85 3f 01 00 00 48 8d 54 24 30 be 01 00 00 00 48 89 RSP: 0018:ffffc90007bcf650 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff87da863f RDX: 0000000000000012 RSI: ffffffff87da864d RDI: 0000000000000090 RBP: ffff8880a4fbc800 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffff8880a4fbcc2a R15: 0000000000000001 FS: 00007f97883c0700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555e4c1776b0 CR3: 00000000a8182000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: sock_poll+0x159/0x460 net/socket.c:1266 vfs_poll include/linux/poll.h:90 [inline] do_select+0x8dc/0x1630 fs/select.c:534 core_sys_select+0x3ba/0x8e0 fs/select.c:677 do_pselect.constprop.0+0x17b/0x1c0 fs/select.c:759 __do_sys_pselect6 fs/select.c:800 [inline] __se_sys_pselect6 fs/select.c:791 [inline] __x64_sys_pselect6+0x1ea/0x2e0 fs/select.c:791 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:384 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45c1d9 Code: Bad RIP value. RSP: 002b:00007f97883bfc78 EFLAGS: 00000246 ORIG_RAX: 000000000000010e RAX: ffffffffffffffda RBX: 0000000000023b80 RCX: 000000000045c1d9 RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000040 RBP: 000000000078c098 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000020000140 R11: 0000000000000246 R12: 000000000078c04c R13: 00007ffed20a578f R14: 00007f97883c09c0 R15: 000000000078c04c Modules linked in: ---[ end trace 086e7155f301615d ]--- RIP: 0010:vsock_poll+0x75a/0x8e0 net/vmw_vsock/af_vsock.c:1038 Code: 84 ed 0f 85 c4 00 00 00 e8 b3 33 99 f9 48 8d bb 90 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa c6 44 24 30 00 48 c1 ea 03 <80> 3c 02 00 0f 85 3f 01 00 00 48 8d 54 24 30 be 01 00 00 00 48 89 RSP: 0018:ffffc90007bcf650 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff87da863f RDX: 0000000000000012 RSI: ffffffff87da864d RDI: 0000000000000090 RBP: ffff8880a4fbc800 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffff8880a4fbcc2a R15: 0000000000000001 FS: 00007f97883c0700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004d9ad0 CR3: 00000000a8182000 CR4: 00000000001406e0 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. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches