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=-0.7 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS 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 8C17FC10F0B for ; Thu, 18 Apr 2019 05:08:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5C7712083D for ; Thu, 18 Apr 2019 05:08:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727016AbfDRFIH (ORCPT ); Thu, 18 Apr 2019 01:08:07 -0400 Received: from mail-io1-f72.google.com ([209.85.166.72]:40212 "EHLO mail-io1-f72.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725773AbfDRFIG (ORCPT ); Thu, 18 Apr 2019 01:08:06 -0400 Received: by mail-io1-f72.google.com with SMTP id e72so1078794iof.7 for ; Wed, 17 Apr 2019 22:08:06 -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=LNT9q1mpdVjlYljQ/uS4EASw5ben7mI0WsQ6X1o2pu0=; b=P6oCJizQgGpzoaMLmYOKV7GWKDXA4+JZzkTpoNyIBZrrcgddedEsqyorc4HgI6IlBa eVK3iuFg6GEVBbM49VoVgm7GuxmgQaDzQljuFhLRML9nSlWpafZm5eBnuaHLuYjndDrE QwPua/3UJXAr0ohjbPoNXBiiVJwUxE60A9564hybZuM8r2cnSdD4u4D8yn1g/8DYbcrK Y9W7hL7YEW21KBT9zEfCZOnHw6OEkft1/YR2sVfkyDA6ad/Pm/OkoN4+S79ocpkxoQKl GVFSPv0z2VbKwVX9hUZrxjKjGow7W8BHPE4B+1c0a+QQ7OqofC7cND+Jl6n2WJqjkn/j Losw== X-Gm-Message-State: APjAAAXEUWJVqNzWiOpNxjmgZUBLzvWcQ/r6N26qVQ/zCV2c42e+vquv wqWbuT0zY8fSn079AirqOarPPZF2R0LOknqZalOJCYIa4LHx X-Google-Smtp-Source: APXvYqxJB4Dupo7HsgXvgSbDSJRKNttG0lpMiOiqO4ysdvnE5Qh+LvOJWSY4hSq9D0PCS3+A56nyseVkb+71fdbDR2/WdwXFLUhO MIME-Version: 1.0 X-Received: by 2002:a5e:a710:: with SMTP id b16mr33189783iod.233.1555564086125; Wed, 17 Apr 2019 22:08:06 -0700 (PDT) Date: Wed, 17 Apr 2019 22:08:06 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000c770710586c6fc92@google.com> Subject: BUG: unable to handle kernel paging request in free_block (5) From: syzbot To: linux-kernel@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following crash on: HEAD commit: e6986423 socket: fix compat SO_RCVTIMEO_NEW/SO_SNDTIMEO_NEW git tree: net console output: https://syzkaller.appspot.com/x/log.txt?x=17356e67200000 kernel config: https://syzkaller.appspot.com/x/.config?x=4fb64439e07a1ec0 dashboard link: https://syzkaller.appspot.com/bug?extid=438a5abd4f53adb1c073 compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12adddbf200000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+438a5abd4f53adb1c073@syzkaller.appspotmail.com BUG: unable to handle kernel paging request at 0000000100000000 #PF error: [WRITE] PGD 94a7e067 P4D 94a7e067 PUD 0 Oops: 0002 [#1] PREEMPT SMP KASAN CPU: 1 PID: 7806 Comm: kworker/1:3 Not tainted 5.1.0-rc4+ #171 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events cache_reap RIP: 0010:slab_put_obj mm/slab.c:2622 [inline] RIP: 0010:free_block+0x149/0x250 mm/slab.c:3420 Code: b6 4c 24 1c 48 c1 ee 20 29 f0 d3 e8 41 0f b6 4c 24 1d 01 f0 49 8b 75 20 d3 e8 8d 4f ff 48 85 f6 41 89 4d 30 0f 84 f0 00 00 00 <88> 04 0e 41 8b 45 30 85 c0 0f 84 fa fe ff ff 49 8b 76 40 4c 89 ff RSP: 0018:ffff888098c17c00 EFLAGS: 00010002 RAX: 0000000000000004 RBX: ffffe8ffffd62810 RCX: 00000000fffffffe RDX: ffff8880a0d4d4e0 RSI: 0000000000000002 RDI: 00000000ffffffff RBP: ffff888098c17c50 R08: ffff8880a830e300 R09: ffffed1013182f80 R10: ffffed1013182f7f R11: 0000000000000003 R12: ffff88821670d680 R13: ffffea0002835340 R14: ffff88809af7b000 R15: ffffea0002835348 FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000100000000 CR3: 0000000094a56000 CR4: 00000000001406e0 Call Trace: drain_array_locked+0x36/0x90 mm/slab.c:2203 drain_array+0x8c/0xb0 mm/slab.c:4028 cache_reap+0xf4/0x280 mm/slab.c:4069 process_one_work+0x98e/0x1790 kernel/workqueue.c:2269 worker_thread+0x98/0xe40 kernel/workqueue.c:2415 kthread+0x357/0x430 kernel/kthread.c:253 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Modules linked in: CR2: 0000000100000000 ---[ end trace b44d468fe865ba2d ]--- RIP: 0010:slab_put_obj mm/slab.c:2622 [inline] RIP: 0010:free_block+0x149/0x250 mm/slab.c:3420 Code: b6 4c 24 1c 48 c1 ee 20 29 f0 d3 e8 41 0f b6 4c 24 1d 01 f0 49 8b 75 20 d3 e8 8d 4f ff 48 85 f6 41 89 4d 30 0f 84 f0 00 00 00 <88> 04 0e 41 8b 45 30 85 c0 0f 84 fa fe ff ff 49 8b 76 40 4c 89 ff RSP: 0018:ffff888098c17c00 EFLAGS: 00010002 RAX: 0000000000000004 RBX: ffffe8ffffd62810 RCX: 00000000fffffffe RDX: ffff8880a0d4d4e0 RSI: 0000000000000002 RDI: 00000000ffffffff RBP: ffff888098c17c50 R08: ffff8880a830e300 R09: ffffed1013182f80 R10: ffffed1013182f7f R11: 0000000000000003 R12: ffff88821670d680 R13: ffffea0002835340 R14: ffff88809af7b000 R15: ffffea0002835348 FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000100000000 CR3: 0000000094a56000 CR4: 00000000001406e0 --- This bug 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 bug report. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this bug, for details see: https://goo.gl/tpsmEJ#testing-patches