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=-0.4 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 A2426C433DF for ; Wed, 10 Jun 2020 10:03:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7A0F4206F7 for ; Wed, 10 Jun 2020 10:03:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728070AbgFJKDN (ORCPT ); Wed, 10 Jun 2020 06:03:13 -0400 Received: from mail-il1-f198.google.com ([209.85.166.198]:52774 "EHLO mail-il1-f198.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726134AbgFJKDM (ORCPT ); Wed, 10 Jun 2020 06:03:12 -0400 Received: by mail-il1-f198.google.com with SMTP id v14so1105282ilo.19 for ; 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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 crash on: HEAD commit: e7b08814 Add linux-next specific files for 20200529 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=14a1f451100000 kernel config: https://syzkaller.appspot.com/x/.config?x=1e62421a5de6da96 dashboard link: https://syzkaller.appspot.com/bug?extid=fe6eeea133f070606074 compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1524ea96100000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17fab432100000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+fe6eeea133f070606074@syzkaller.appspotmail.com general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc7-next-20200529-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__switch_to_asm+0x0/0x40 arch/x86/entry/entry_64.S:228 Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 RSP: 0018:ffffffff89a07cd8 EFLAGS: 00010046 RAX: dffffc0000000000 RBX: ffff88809fce2b40 RCX: 1ffffffff1350dc9 RDX: 1ffff11015cc6fc2 RSI: ffff88809489e280 RDI: ffffffff89a86580 RBP: ffffffff89a07da8 R08: 0000000000000000 R09: fffffbfff155b432 R10: ffffffff8aada18f R11: fffffbfff155b431 R12: ffffffff89a86580 R13: ffff8880ae637e00 R14: ffff88809489e280 R15: ffff8880ae637e18 FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000563f12be20f8 CR3: 000000009a876000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: context_switch kernel/sched/core.c:3430 [inline] __schedule+0x8f3/0x1f80 kernel/sched/core.c:4155 schedule_idle+0x53/0x90 kernel/sched/core.c:4258 do_idle+0x327/0x690 kernel/sched/idle.c:297 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:365 start_kernel+0x9be/0x9fb init/main.c:1043 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243 Modules linked in: ---[ end trace 7e4004b4996f54a3 ]--- RIP: 0010:__switch_to_asm+0x0/0x40 arch/x86/entry/entry_64.S:228 Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 RSP: 0018:ffffffff89a07cd8 EFLAGS: 00010046 RAX: dffffc0000000000 RBX: ffff88809fce2b40 RCX: 1ffffffff1350dc9 RDX: 1ffff11015cc6fc2 RSI: ffff88809489e280 RDI: ffffffff89a86580 RBP: ffffffff89a07da8 R08: 0000000000000000 R09: fffffbfff155b432 R10: ffffffff8aada18f R11: fffffbfff155b431 R12: ffffffff89a86580 R13: ffff8880ae637e00 R14: ffff88809489e280 R15: ffff8880ae637e18 FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000563f12be20f8 CR3: 000000009a876000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- 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