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=-5.4 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,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 317DAC433E1 for ; Mon, 6 Jul 2020 10:47:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 186A52074D for ; Mon, 6 Jul 2020 10:47:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728910AbgGFKrT (ORCPT ); Mon, 6 Jul 2020 06:47:19 -0400 Received: from mail-io1-f70.google.com ([209.85.166.70]:54813 "EHLO mail-io1-f70.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728844AbgGFKrQ (ORCPT ); Mon, 6 Jul 2020 06:47:16 -0400 Received: by mail-io1-f70.google.com with SMTP id q207so700355iod.21 for ; Mon, 06 Jul 2020 03:47:15 -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=bV1o04mIYzfoK13kKj71WduMIZc/Fisa+x2TYp0LHDo=; b=O1NSYCvZUj/jn5oYFfZCN/WU79M47TLMjB4Ph8FPBuuwOFtCNkWKcgja/eIZ0S0img YusvtUZCT0e6vXbGHq+fBiaKCz7lYFzM0L+SdpMhSHSqkZvWQqeJXIFy4b3Mqe45ZeKC maCCCx6fJVrVi5yG+8MOBvBpGbuxInpU3sOR7+GHxsU42P9c9gu7c94668FTK0cez6Hf hWgaoNeMufpS54Kdp+Tokg35y+4xp33T7g9Rl4KCYyhRzxNwyay3gaCZA6nhfsD4iZoW qi82+wiAQE+tV/m+wxMIMB6eMYv3/eb5vgv1sB6A9Aszt7nzSGPaDaJUETIptYmWKJV2 dcYA== X-Gm-Message-State: AOAM5325QSkT3IOWP6QzlD3YvLHQFZYrk07qb/DTLu0uDOKjaQXLrBhc eqezGrlZzsFKX502heDuyk/E5XKcJfCBz+hcfRB6CMK6PhV0 X-Google-Smtp-Source: ABdhPJxGHDXWd93bm5fuKZthng2Z6tzSk1u1TborWWVLClMTLZ309wxlsSsEAZCXltyNJEXWQEs6++aXJsQTmt9K+wyFEVA4j1UH MIME-Version: 1.0 X-Received: by 2002:a5e:8d15:: with SMTP id m21mr25229706ioj.60.1594032435591; Mon, 06 Jul 2020 03:47:15 -0700 (PDT) Date: Mon, 06 Jul 2020 03:47:15 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000157f8105a9c399b9@google.com> Subject: WARNING in trace_hardirqs_off_thunk From: syzbot To: linux-kernel@vger.kernel.org, mingo@redhat.com, peterz@infradead.org, syzkaller-bugs@googlegroups.com, will@kernel.org 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 crash on: HEAD commit: 7ae77150 Merge tag 'powerpc-5.8-1' of git://git.kernel.org.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=14180d35100000 kernel config: https://syzkaller.appspot.com/x/.config?x=be4578b3f1083656 dashboard link: https://syzkaller.appspot.com/bug?extid=d135d81280f93e6e9d4b compiler: clang version 10.0.0 (https://github.com/llvm/llvm-project/ c2443155a0fb245c8f17f2c1c72b6ea391e86e81) Unfortunately, I don't have any reproducer for this crash yet. IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+d135d81280f93e6e9d4b@syzkaller.appspotmail.com ------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(!irqs_disabled()) WARNING: CPU: 0 PID: 7117 at kernel/locking/lockdep.c:3745 lockdep_hardirqs_off+0x1ac/0x2f0 kernel/locking/lockdep.c:3745 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 7117 Comm: syz-executor.3 Not tainted 5.7.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1e9/0x30e lib/dump_stack.c:118 panic+0x264/0x7a0 kernel/panic.c:221 __warn+0x209/0x210 kernel/panic.c:582 report_bug+0x1ac/0x2d0 lib/bug.c:195 fixup_bug arch/x86/kernel/traps.c:105 [inline] do_error_trap+0xca/0x1c0 arch/x86/kernel/traps.c:197 do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:216 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027 RIP: 0010:lockdep_hardirqs_off+0x1ac/0x2f0 kernel/locking/lockdep.c:3745 Code: 42 8a 04 20 84 c0 0f 85 2a 01 00 00 83 3d 0f 9f 56 01 00 75 cd 48 c7 c7 c6 44 e6 88 48 c7 c6 6b d4 e7 88 31 c0 e8 e4 8a 30 f9 <0f> 0b eb b4 48 c7 c1 70 7d 6c 89 80 e1 07 80 c1 03 38 c1 0f 8c 71 RSP: 0018:ffffc90005587ed0 EFLAGS: 00010246 RAX: f9f4096c7a9c0100 RBX: ffff8880676c6b4c RCX: ffff8880676c6280 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000286 RBP: ffffc90005587f48 R08: ffffffff817a4660 R09: fffffbfff125cd89 R10: fffffbfff125cd89 R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000000 R14: ffffffff81006f10 R15: ffff8880676c6280 trace_hardirqs_off_thunk+0x1a/0x1c arch/x86/entry/thunk_64.S:42 entry_SYSCALL_64_after_hwframe+0x3e/0xb3 RIP: 0033:0x45f89a Code: 25 18 00 00 00 00 74 01 f0 48 0f b1 3d cf a5 84 00 48 39 c2 75 da f3 c3 0f 1f 84 00 00 00 00 00 48 63 ff b8 e4 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 06 f3 c3 0f 1f 40 00 48 c7 c2 d4 ff ff ff f7 RSP: 002b:00007fff40af3258 EFLAGS: 00000246 ORIG_RAX: 00000000000000e4 RAX: ffffffffffffffda RBX: 000000000009eeef RCX: 000000000045f89a RDX: 0000000000000000 RSI: 00007fff40af3260 RDI: 0000000000000001 RBP: 00000000000008bc R08: 0000000000000001 R09: 00000000015d8940 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000000a R13: 00007fff40af32c0 R14: 000000000009ee34 R15: 00007fff40af32d0 Kernel Offset: disabled Rebooting in 86400 seconds.. --- 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.