From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753645Ab0LFQI4 (ORCPT ); Mon, 6 Dec 2010 11:08:56 -0500 Received: from smtp-tls1.univ-nantes.fr ([193.52.101.145]:43808 "EHLO smtp-tls.univ-nantes.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751942Ab0LFQIy (ORCPT ); Mon, 6 Dec 2010 11:08:54 -0500 Message-ID: <4CFD0A8F.8010906@univ-nantes.fr> Date: Mon, 06 Dec 2010 17:08:47 +0100 From: Menil Jean-Philippe Reply-To: jean-philippe.menil@univ-nantes.fr Organization: =?ISO-8859-1?Q?Univerist=E9_de_Nantes?= User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.2.12) Gecko/20101027 Thunderbird/3.1.6 MIME-Version: 1.0 To: netdev@vger.kernel.org CC: Michael Leun , David Lamparter , "Eric W. Biederman" , Greg KH , davem@davemloft.net, linux-kernel@vger.kernel.org, Alexey Dobriyan , Patrick McHardy Subject: Re: NET_NS: unregister_netdevice: waiting for lo to become free (adding ipv6 address to interface) References: <20100710235323.5336f627@xenia.leun.net> <20100711192939.1c25dcaf@xenia.leun.net> <20100804153543.56f6ecad@xenia.leun.net> <20100804214618.GA6289@kroah.com> <20100805001105.5a3453ed@xenia.leun.net> <20100805112538.60a46cb1@xenia.leun.net> <20100805134707.0442a7b1@xenia.leun.net> <20101021171532.54af5e97@xenia.leun.net> <20101022124858.GA719746@jupiter.n2.diac24.net> <20101022190532.00e9e5d8@xenia.leun.net> <20101024151541.161bf46c@xenia.leun.net> In-Reply-To: <20101024151541.161bf46c@xenia.leun.net> Content-Type: multipart/mixed; boundary="------------080504030802060008020209" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This is a multi-part message in MIME format. --------------080504030802060008020209 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit Le 24/10/2010 15:15, Michael Leun a écrit : > On Fri, 22 Oct 2010 19:05:32 +0200 > Michael Leun wrote: > >> On Fri, 22 Oct 2010 14:48:58 +0200 >> David Lamparter wrote: >> >>> On Thu, Oct 21, 2010 at 05:15:32PM +0200, Michael Leun wrote: >>>> unfortunately the bug described below originally reported in >>>> 2.6.35-rcX is still there in 2.6.36. >>> >>> can you post your full kernel .config? >> >> Please find below. >> >>> I'm using network namespaces quite extensively - OpenVPN and IPv6 >>> included - and i haven't hit this bug. That makes it rather likely >>> it depends on some option difference. >> >> I take candidates for options to change for test... ;-) >> >> Maybe I will try to strip it down for test towards a minimal config. > > Now I have tried a kernel config with almost everything disabled - > please find below. > > If I have overlooked anything I should disable (or if you suggest I > should not disable, but enable any option) - please tell me. > > I've created an ~2.5MB bootable ISO image based on buildroot/busybox > with this kernel, which also shows this bug (e.g. when run in > VirtualBox). > > If anybody is interested I could send this image as mail attachment or > provide a download link. > > ml@xenia:~> grep -v "^#" .config |grep -v "^ *$" > CONFIG_X86_32=y > CONFIG_X86=y > CONFIG_INSTRUCTION_DECODER=y > CONFIG_OUTPUT_FORMAT="elf32-i386" > CONFIG_ARCH_DEFCONFIG="arch/x86/configs/i386_defconfig" > CONFIG_GENERIC_CMOS_UPDATE=y > CONFIG_CLOCKSOURCE_WATCHDOG=y > CONFIG_GENERIC_CLOCKEVENTS=y > CONFIG_LOCKDEP_SUPPORT=y > CONFIG_STACKTRACE_SUPPORT=y > CONFIG_HAVE_LATENCYTOP_SUPPORT=y > CONFIG_MMU=y > CONFIG_ZONE_DMA=y > CONFIG_NEED_SG_DMA_LENGTH=y > CONFIG_GENERIC_ISA_DMA=y > CONFIG_GENERIC_IOMAP=y > CONFIG_GENERIC_BUG=y > CONFIG_GENERIC_HWEIGHT=y > CONFIG_ARCH_MAY_HAVE_PC_FDC=y > CONFIG_RWSEM_XCHGADD_ALGORITHM=y > CONFIG_ARCH_HAS_CPU_IDLE_WAIT=y > CONFIG_GENERIC_CALIBRATE_DELAY=y > CONFIG_ARCH_HAS_CPU_RELAX=y > CONFIG_ARCH_HAS_DEFAULT_IDLE=y > CONFIG_ARCH_HAS_CACHE_LINE_SIZE=y > CONFIG_HAVE_SETUP_PER_CPU_AREA=y > CONFIG_NEED_PER_CPU_EMBED_FIRST_CHUNK=y > CONFIG_NEED_PER_CPU_PAGE_FIRST_CHUNK=y > CONFIG_ARCH_HIBERNATION_POSSIBLE=y > CONFIG_ARCH_SUSPEND_POSSIBLE=y > CONFIG_ARCH_POPULATES_NODE_MAP=y > CONFIG_ARCH_SUPPORTS_OPTIMIZED_INLINING=y > CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC=y > CONFIG_HAVE_EARLY_RES=y > CONFIG_GENERIC_HARDIRQS=y > CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ=y > CONFIG_GENERIC_IRQ_PROBE=y > CONFIG_X86_32_LAZY_GS=y > CONFIG_ARCH_HWEIGHT_CFLAGS="-fcall-saved-ecx -fcall-saved-edx" > CONFIG_KTIME_SCALAR=y > CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config" > CONFIG_CONSTRUCTORS=y > CONFIG_EXPERIMENTAL=y > CONFIG_BROKEN_ON_SMP=y > CONFIG_INIT_ENV_ARG_LIMIT=32 > CONFIG_CROSS_COMPILE="" > CONFIG_LOCALVERSION="" > CONFIG_HAVE_KERNEL_GZIP=y > CONFIG_HAVE_KERNEL_BZIP2=y > CONFIG_HAVE_KERNEL_LZMA=y > CONFIG_HAVE_KERNEL_LZO=y > CONFIG_KERNEL_LZMA=y > CONFIG_TREE_RCU=y > CONFIG_RCU_FANOUT=32 > CONFIG_IKCONFIG=y > CONFIG_IKCONFIG_PROC=y > CONFIG_LOG_BUF_SHIFT=18 > CONFIG_HAVE_UNSTABLE_SCHED_CLOCK=y > CONFIG_NAMESPACES=y > CONFIG_NET_NS=y > CONFIG_BLK_DEV_INITRD=y > CONFIG_INITRAMFS_SOURCE="" > CONFIG_RD_GZIP=y > CONFIG_RD_BZIP2=y > CONFIG_RD_LZMA=y > CONFIG_RD_LZO=y > CONFIG_SYSCTL=y > CONFIG_ANON_INODES=y > CONFIG_UID16=y > CONFIG_SYSCTL_SYSCALL=y > CONFIG_KALLSYMS=y > CONFIG_HOTPLUG=y > CONFIG_PRINTK=y > CONFIG_BUG=y > CONFIG_ELF_CORE=y > CONFIG_PCSPKR_PLATFORM=y > CONFIG_BASE_FULL=y > CONFIG_FUTEX=y > CONFIG_EPOLL=y > CONFIG_SIGNALFD=y > CONFIG_TIMERFD=y > CONFIG_EVENTFD=y > CONFIG_SHMEM=y > CONFIG_AIO=y > CONFIG_HAVE_PERF_EVENTS=y > CONFIG_PERF_EVENTS=y > CONFIG_VM_EVENT_COUNTERS=y > CONFIG_PCI_QUIRKS=y > CONFIG_SLUB_DEBUG=y > CONFIG_SLUB=y > CONFIG_HAVE_OPROFILE=y > CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y > CONFIG_HAVE_IOREMAP_PROT=y > CONFIG_HAVE_KPROBES=y > CONFIG_HAVE_KRETPROBES=y > CONFIG_HAVE_OPTPROBES=y > CONFIG_HAVE_ARCH_TRACEHOOK=y > CONFIG_HAVE_DMA_ATTRS=y > CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y > CONFIG_HAVE_DMA_API_DEBUG=y > CONFIG_HAVE_HW_BREAKPOINT=y > CONFIG_HAVE_MIXED_BREAKPOINTS_REGS=y > CONFIG_HAVE_USER_RETURN_NOTIFIER=y > CONFIG_HAVE_PERF_EVENTS_NMI=y > CONFIG_HAVE_GENERIC_DMA_COHERENT=y > CONFIG_SLABINFO=y > CONFIG_RT_MUTEXES=y > CONFIG_BASE_SMALL=0 > CONFIG_BLOCK=y > CONFIG_LBDAF=y > CONFIG_IOSCHED_NOOP=y > CONFIG_DEFAULT_NOOP=y > CONFIG_DEFAULT_IOSCHED="noop" > CONFIG_INLINE_SPIN_UNLOCK=y > CONFIG_INLINE_SPIN_UNLOCK_IRQ=y > CONFIG_INLINE_READ_UNLOCK=y > CONFIG_INLINE_READ_UNLOCK_IRQ=y > CONFIG_INLINE_WRITE_UNLOCK=y > CONFIG_INLINE_WRITE_UNLOCK_IRQ=y > CONFIG_GENERIC_CLOCKEVENTS_BUILD=y > CONFIG_M586=y > CONFIG_X86_CPU=y > CONFIG_X86_INTERNODE_CACHE_SHIFT=5 > CONFIG_X86_CMPXCHG=y > CONFIG_X86_L1_CACHE_SHIFT=5 > CONFIG_X86_XADD=y > CONFIG_X86_F00F_BUG=y > CONFIG_X86_WP_WORKS_OK=y > CONFIG_X86_INVLPG=y > CONFIG_X86_BSWAP=y > CONFIG_X86_POPAD_OK=y > CONFIG_X86_ALIGNMENT_16=y > CONFIG_X86_MINIMUM_CPU_FAMILY=4 > CONFIG_CPU_SUP_INTEL=y > CONFIG_CPU_SUP_CYRIX_32=y > CONFIG_CPU_SUP_AMD=y > CONFIG_CPU_SUP_CENTAUR=y > CONFIG_CPU_SUP_TRANSMETA_32=y > CONFIG_CPU_SUP_UMC_32=y > CONFIG_DMI=y > CONFIG_NR_CPUS=1 > CONFIG_PREEMPT_NONE=y > CONFIG_VM86=y > CONFIG_HIGHMEM4G=y > CONFIG_PAGE_OFFSET=0xC0000000 > CONFIG_HIGHMEM=y > CONFIG_NEED_NODE_MEMMAP_SIZE=y > CONFIG_ARCH_FLATMEM_ENABLE=y > CONFIG_ARCH_SPARSEMEM_ENABLE=y > CONFIG_ARCH_SELECT_MEMORY_MODEL=y > CONFIG_ILLEGAL_POINTER_VALUE=0 > CONFIG_SELECT_MEMORY_MODEL=y > CONFIG_SPARSEMEM_MANUAL=y > CONFIG_SPARSEMEM=y > CONFIG_HAVE_MEMORY_PRESENT=y > CONFIG_SPARSEMEM_STATIC=y > CONFIG_SPLIT_PTLOCK_CPUS=4 > CONFIG_ZONE_DMA_FLAG=1 > CONFIG_BOUNCE=y > CONFIG_VIRT_TO_BUS=y > CONFIG_DEFAULT_MMAP_MIN_ADDR=65536 > CONFIG_MTRR=y > CONFIG_X86_PAT=y > CONFIG_ARCH_USES_PG_UNCACHED=y > CONFIG_HZ_1000=y > CONFIG_HZ=1000 > CONFIG_PHYSICAL_START=0x1000000 > CONFIG_PHYSICAL_ALIGN=0x1000000 > CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y > CONFIG_PCI=y > CONFIG_PCI_GOANY=y > CONFIG_PCI_BIOS=y > CONFIG_PCI_DIRECT=y > CONFIG_PCI_DOMAINS=y > CONFIG_ISA_DMA_API=y > CONFIG_K8_NB=y > CONFIG_BINFMT_ELF=y > CONFIG_HAVE_AOUT=y > CONFIG_HAVE_ATOMIC_IOMAP=y > CONFIG_NET=y > CONFIG_UNIX=y > CONFIG_INET=y > CONFIG_IP_FIB_HASH=y > CONFIG_TCP_CONG_CUBIC=y > CONFIG_DEFAULT_TCP_CONG="cubic" > CONFIG_IPV6=y > CONFIG_UEVENT_HELPER_PATH="" > CONFIG_DEVTMPFS=y > CONFIG_DEVTMPFS_MOUNT=y > CONFIG_PREVENT_FIRMWARE_BUILD=y > CONFIG_FW_LOADER=y > CONFIG_EXTRA_FIRMWARE="" > CONFIG_HAVE_IDE=y > CONFIG_SCSI_MOD=y > CONFIG_NETDEVICES=y > CONFIG_VETH=y > CONFIG_INPUT=y > CONFIG_INPUT_MOUSEDEV=y > CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024 > CONFIG_INPUT_MOUSEDEV_SCREEN_Y=576 > CONFIG_INPUT_KEYBOARD=y > CONFIG_KEYBOARD_ATKBD=y > CONFIG_SERIO=y > CONFIG_SERIO_I8042=y > CONFIG_SERIO_LIBPS2=y > CONFIG_VT=y > CONFIG_CONSOLE_TRANSLATIONS=y > CONFIG_VT_CONSOLE=y > CONFIG_HW_CONSOLE=y > CONFIG_FIX_EARLYCON_MEM=y > CONFIG_UNIX98_PTYS=y > CONFIG_DEVPORT=y > CONFIG_ARCH_WANT_OPTIONAL_GPIOLIB=y > CONFIG_SSB_POSSIBLE=y > CONFIG_VGA_ARB=y > CONFIG_VGA_ARB_MAX_GPUS=16 > CONFIG_VGA_CONSOLE=y > CONFIG_VGACON_SOFT_SCROLLBACK=y > CONFIG_VGACON_SOFT_SCROLLBACK_SIZE=64 > CONFIG_DUMMY_CONSOLE=y > CONFIG_FIRMWARE_MEMMAP=y > CONFIG_FILE_LOCKING=y > CONFIG_PROC_FS=y > CONFIG_PROC_SYSCTL=y > CONFIG_PROC_PAGE_MONITOR=y > CONFIG_SYSFS=y > CONFIG_MSDOS_PARTITION=y > CONFIG_TRACE_IRQFLAGS_SUPPORT=y > CONFIG_FRAME_WARN=2048 > CONFIG_DEBUG_BUGVERBOSE=y > CONFIG_DEBUG_MEMORY_INIT=y > CONFIG_ARCH_WANT_FRAME_POINTERS=y > CONFIG_USER_STACKTRACE_SUPPORT=y > CONFIG_HAVE_FUNCTION_TRACER=y > CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y > CONFIG_HAVE_FUNCTION_GRAPH_FP_TEST=y > CONFIG_HAVE_FUNCTION_TRACE_MCOUNT_TEST=y > CONFIG_HAVE_DYNAMIC_FTRACE=y > CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y > CONFIG_HAVE_SYSCALL_TRACEPOINTS=y > CONFIG_TRACING_SUPPORT=y > CONFIG_HAVE_ARCH_KGDB=y > CONFIG_HAVE_ARCH_KMEMCHECK=y > CONFIG_EARLY_PRINTK=y > CONFIG_DOUBLEFAULT=y > CONFIG_HAVE_MMIOTRACE_SUPPORT=y > CONFIG_IO_DELAY_TYPE_0X80=0 > CONFIG_IO_DELAY_TYPE_0XED=1 > CONFIG_IO_DELAY_TYPE_UDELAY=2 > CONFIG_IO_DELAY_TYPE_NONE=3 > CONFIG_IO_DELAY_0X80=y > CONFIG_DEFAULT_IO_DELAY_TYPE=0 > CONFIG_DEFAULT_SECURITY_DAC=y > CONFIG_DEFAULT_SECURITY="" > CONFIG_HAVE_KVM=y > CONFIG_GENERIC_FIND_FIRST_BIT=y > CONFIG_GENERIC_FIND_NEXT_BIT=y > CONFIG_GENERIC_FIND_LAST_BIT=y > CONFIG_ZLIB_INFLATE=y > CONFIG_LZO_DECOMPRESS=y > CONFIG_DECOMPRESS_GZIP=y > CONFIG_DECOMPRESS_BZIP2=y > CONFIG_DECOMPRESS_LZMA=y > CONFIG_DECOMPRESS_LZO=y > CONFIG_HAS_IOMEM=y > CONFIG_HAS_IOPORT=y > CONFIG_HAS_DMA=y > CONFIG_NLATTR=y > Hi, curiously, i'm facing a similar problem in 2.6.36.1 in my container, when i configure ipv6 adress on the interfaces, everything seems good on the first boot of the host. If i shutdown my container (lxc), then boot it, i observe the following logs: Dec 6 17:04:12 suntory.u06.univ-nantes.prive kernel: [ 368.192019] unregister_netdevice: waiting for lo to become free. Usage count = 4 Dec 6 17:04:22 suntory.u06.univ-nantes.prive kernel: [ 378.432018] unregister_netdevice: waiting for lo to become free. Usage count = 4 Dec 6 17:04:32 suntory.u06.univ-nantes.prive kernel: [ 388.672015] unregister_netdevice: waiting for lo to become free. Usage count = 4 Dec 6 17:04:42 suntory.u06.univ-nantes.prive kernel: [ 398.912016] unregister_netdevice: waiting for lo to become free. Usage count = 4 Dec 6 17:04:53 suntory.u06.univ-nantes.prive kernel: [ 409.152016] unregister_netdevice: waiting for lo to become free. Usage count = 4 Dec 6 17:05:03 suntory.u06.univ-nantes.prive kernel: [ 419.392018] unregister_netdevice: waiting for lo to become free. Usage count = 4 Dec 6 17:05:13 suntory.u06.univ-nantes.prive kernel: [ 429.632018] unregister_netdevice: waiting for lo to become free. Usage count = 4 Dec 6 17:05:23 suntory.u06.univ-nantes.prive kernel: [ 439.876016] unregister_netdevice: waiting for lo to become free. Usage count = 4 Dec 6 17:05:34 suntory.u06.univ-nantes.prive kernel: [ 450.116015] unregister_netdevice: waiting for lo to become free. Usage count = 4 Dec 6 17:05:44 suntory.u06.univ-nantes.prive kernel: [ 460.356019] unregister_netdevice: waiting for lo to become free. Usage count = 4 Dec 6 17:05:54 suntory.u06.univ-nantes.prive kernel: [ 470.596020] unregister_netdevice: waiting for lo to become free. Usage count = 4 Dec 6 17:06:04 suntory.u06.univ-nantes.prive kernel: [ 480.836019] unregister_netdevice: waiting for lo to become free. Usage count = 4 Dec 6 17:06:05 suntory.u06.univ-nantes.prive kernel: [ 481.468021] INFO: task lxc-start:3805 blocked for more than 120 seconds. Then i must reboot the host. The same on kernel 2.6.34, but everything is good on a 2.6.32 Some relvant informations about the kernel: root@suntory:~# cat /boot/config-2.6.36.1-dsiun-1d | grep -i sysfs # CONFIG_SYSFS_DEPRECATED_V2 is not set CONFIG_ACPI_SYSFS_POWER=y # CONFIG_WIRELESS_EXT_SYSFS is not set CONFIG_ISCSI_BOOT_SYSFS=m CONFIG_RTC_INTF_SYSFS=y CONFIG_SYSFS=y root@suntory:~# cat /boot/config-2.6.36.1-dsiun-1d | grep -i net_ns CONFIG_NET_NS=y Is there anything in my configuration, i must check in order to get ipv6 working fully in the container? Regards. --------------080504030802060008020209 Content-Type: text/x-vcard; charset=utf-8; name="jean-philippe_menil.vcf" Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename="jean-philippe_menil.vcf" begin:vcard fn:Jean-Philippe Menil n:Menil;Jean-Philippe org;quoted-printable:Universit=C3=A9 de Nantes;IRTS adr;quoted-printable:;;2 rue de la Houssini=C3=A8re;Nantes;;44322;France email;internet:jean-philippe.menil@univ-nantes.fr title:Reseau tel;work:02 53 48 49 27 tel;fax:(33)2 51 12 58 60 tel;cell:06 45 38 87 75 url:http://www.cri.univ-nantes.fr version:2.1 end:vcard --------------080504030802060008020209--