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=-4.0 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 E1CC1C433DF for ; Fri, 31 Jul 2020 06:44:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C8D122173E for ; Fri, 31 Jul 2020 06:44:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731425AbgGaGoW (ORCPT ); Fri, 31 Jul 2020 02:44:22 -0400 Received: from mail-io1-f71.google.com ([209.85.166.71]:33441 "EHLO mail-io1-f71.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731224AbgGaGoW (ORCPT ); Fri, 31 Jul 2020 02:44:22 -0400 Received: by mail-io1-f71.google.com with SMTP id a12so20336257ioo.0 for ; Thu, 30 Jul 2020 23:44:21 -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=/UCtpCQnfsMjERP9corfZ7QvqWsr5QFQWzyK16LB6iU=; b=VVouFwyq9I3k1dFv4Hub/0LR6kPnj308NhLt4Q3UhMfBvMvGqgnKxrnX+XfZ0z+2uM Uaix12shvBSFkaHZu2Vjg/o2izQVjLulUFuncqfsxi2lFxEuMCCIFkYEUStRrZMcmJxt kTL4I7aT0xcrfUxOH8fGbnzYFGaMbsSUBcd/yEWzSHHRCSRwS/huLkEwlu0RcxLzfem/ p43EY1478HSLhb2nP+U0xyKhPjcq1aFTzSy4ZS3viwKg8C6cXjW2+s42RO0vyT0nYhW4 OsnbUTcAH8DwdQtvSH+coDYspgIySCAzz/yq9tPaosMgBJOCVZwqc+0Hd+7w1Xz3h4tp eY+A== X-Gm-Message-State: AOAM531kdCWkG9jy6h3tz0ciyh8yvdc5CPBdc4/klM4yLcm8vluh+mKw pVF+zpJbRBhVRgyXXll+GURRzgZm0ubI2CMRm+QyWZcbNQB9 X-Google-Smtp-Source: ABdhPJzbUf3AUtwDCD/or7YAXQBe12HcFW/NZSI0+hx7Cft+626tBAPLWuF4l35OHOi6OPxGdyVHmhorAMCoBHDSeYmW93on9kqz MIME-Version: 1.0 X-Received: by 2002:a02:8792:: with SMTP id t18mr3338901jai.117.1596177860569; Thu, 30 Jul 2020 23:44:20 -0700 (PDT) Date: Thu, 30 Jul 2020 23:44:20 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000060adcb05abb71eb6@google.com> Subject: upstream boot error: BUG: soft lockup in __do_softirq From: syzbot To: bp@alien8.de, hpa@zytor.com, linux-kernel@vger.kernel.org, luto@kernel.org, mingo@redhat.com, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, x86@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 issue on: HEAD commit: 92ed3019 Linux 5.8-rc7 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=10e84cdf100000 kernel config: https://syzkaller.appspot.com/x/.config?x=b45e47f6d958ae82 dashboard link: https://syzkaller.appspot.com/bug?extid=8472ea265fe32cc3bf78 compiler: gcc (GCC) 10.1.0-syz 20200507 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+8472ea265fe32cc3bf78@syzkaller.appspotmail.com hrtimer: interrupt took 42698779 ns random: crng init done watchdog: BUG: soft lockup - CPU#3 stuck for 21s! [grep:4749] Modules linked in: hardirqs last enabled at (2780): [] __do_softirq+0x204/0xa60 kernel/softirq.c:276 hardirqs last disabled at (2781): [] idtentry_enter_cond_rcu+0x1d/0x50 arch/x86/entry/common.c:649 softirqs last enabled at (2760): [] __do_softirq+0x748/0xa60 kernel/softirq.c:319 softirqs last disabled at (2779): [] asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:711 CPU: 3 PID: 4749 Comm: grep Not tainted 5.8.0-rc7-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 RIP: 0010:__do_softirq+0x22f/0xa60 kernel/softirq.c:278 Code: c7 c0 98 e0 b4 89 48 c1 e8 03 42 80 3c 30 00 0f 85 70 07 00 00 48 83 3d 76 de 94 01 00 0f 84 4a 06 00 00 fb 66 0f 1f 44 00 00 <48> c7 44 24 08 c0 90 a0 89 b8 ff ff ff ff 0f bc 04 24 83 c0 01 89 RSP: 0000:ffffc90000598f70 EFLAGS: 00000286 RAX: 1ffffffff1369c13 RBX: ffff8880294683c0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff88200204 R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff88000c3a R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000 FS: 00007fe02dd23700(0000) GS:ffff88802d100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000f5d1e8 CR3: 000000001efc6000 CR4: 0000000000340ee0 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: invoke_softirq kernel/softirq.c:387 [inline] __irq_exit_rcu kernel/softirq.c:417 [inline] irq_exit_rcu+0x229/0x270 kernel/softirq.c:429 sysvec_apic_timer_interrupt+0x54/0x120 arch/x86/kernel/apic/apic.c:1091 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:585 Code: ba 63 03 00 00 e8 f5 bf 00 00 0f 1f 44 00 00 48 89 5c 24 e0 48 89 6c 24 e8 48 89 fb 4c 89 64 24 f0 4c 89 6c 24 f8 48 83 ec 38 <0f> b6 47 04 83 e0 0f 83 f8 06 0f 85 3e 01 00 00 31 d2 66 83 7b 06 RSP: 002b:00007ffd13103ee0 EFLAGS: 00010202 RAX: 00000000000003b7 RBX: 00007fe02d584588 RCX: 0000000000000000 RDX: 00007fe02d57d94c RSI: 0000000000000edc RDI: 00007fe02d584588 RBP: 00007fe02dd2aef8 R08: 00000000004282a7 R09: 0000000000000004 R10: 00007ffd13103f70 R11: 00007ffd13103f70 R12: 0000000000000004 R13: 0000000010a0a9c4 R14: 0000000000000002 R15: 00007ffd131040f8 --- 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.