From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933156AbaKMOI6 (ORCPT ); Thu, 13 Nov 2014 09:08:58 -0500 Received: from mga03.intel.com ([134.134.136.65]:2084 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932756AbaKMOI5 (ORCPT ); Thu, 13 Nov 2014 09:08:57 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.04,691,1406617200"; d="scan'208";a="487185524" Message-ID: <5464BB4B.7010505@linux.intel.com> Date: Thu, 13 Nov 2014 22:08:11 +0800 From: Jiang Liu Organization: Intel User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:31.0) Gecko/20100101 Thunderbird/31.2.0 MIME-Version: 1.0 To: Fengguang Wu CC: LKP , linux-kernel@vger.kernel.org, Yuanhan Liu Subject: Re: [x86, irq] BUG: kernel boot hang References: <20141113134139.GA22488@wfg-t540p.sh.intel.com> In-Reply-To: <20141113134139.GA22488@wfg-t540p.sh.intel.com> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Fengguang, This seems like a bug caused by my changes, several bisecting report the same commit. There's some subtle changes in the way to write IOAPIC registers, will check it tomorrow:) Thanks! Gerry On 2014/11/13 21:41, Fengguang Wu wrote: > > Hi Jiang, > > This is another bisect result. > > https://github.com/jiangliu/linux.git irqdomain/p4v2 > commit b8c2d075135a41f69254a75c4f26162559503ab4 ("x86, irq: Use cached IOAPIC entry instead of reading from hardware") > > > +----------------------+------------+------------+ > | | 384c30d19a | b8c2d07513 | > +----------------------+------------+------------+ > | boot_successes | 20 | 5 | > | early-boot-hang | 1 | | > | boot_failures | 0 | 15 | > | BUG:kernel_boot_hang | 0 | 15 | > +----------------------+------------+------------+ > > > [ 289.616037] Waiting up to 30 more seconds for network. > [ 299.616037] Waiting up to 20 more seconds for network. > > BUG: kernel boot hang > Elapsed time: 310 > qemu-system-x86_64 -enable-kvm -kernel /kernel/x86_64-lkp/349d0daa5e14b9b402a2dea3e602ef1cb109173b/vmlinuz-3.18.0-rc3-g349d0da -append 'user=lkp job=/lkp/scheduled/vm-vp-quantal-x86_64-27/rand_boot-1-quantal-core-x86_64.cgz-x86_64-lkp-349d0daa5e14b9b402a2dea3e602ef1cb109173b-1.yaml ARCH=x86_64 BOOT_IMAGE=/kernel/x86_64-lkp/349d0daa5e14b9b402a2dea3e602ef1cb109173b/vmlinuz-3.18.0-rc3-g349d0da kconfig=x86_64-lkp commit=349d0daa5e14b9b402a2dea3e602ef1cb109173b branch=jiangliu/irqdomain/p4v2 root=/dev/ram0 max_uptime=3600 RESULT_ROOT=/result/vm-vp-quantal-x86_64/boot/1/quantal-core-x86_64.cgz/x86_64-lkp/349d0daa5e14b9b402a2dea3e602ef1cb109173b/0 ip=::::vm-vp-quantal-x86_64-27::dhcp earlyprintk=ttyS0,115200 debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 panic=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic load_ramdisk=2 prompt_ramdisk=0 console=ttyS0,115200 console=tty0 vga=normal rw drbd.minor_count=8' -initrd /fs/sdf1/initrd-vm-vp-quantal-x86_64-27 -m 3 60 -smp 2 -net nic,vlan=1,model=e1000 -net user,vlan=1 -boot order=nc -no-reboot -watchdog i6300esb -rtc base=localtime -pidfile /dev/shm/kboot/pid-vm-vp-quantal-x86_64-27 -serial file:/dev/shm/kboot/serial-vm-vp-quantal-x86_64-27 -daemonize -display none -monitor null > > > > Thanks, > Fengguang > > > > _______________________________________________ > LKP mailing list > LKP@linux.intel.com >