From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753934Ab0LFVWU (ORCPT ); Mon, 6 Dec 2010 16:22:20 -0500 Received: from out02.mta.xmission.com ([166.70.13.232]:38361 "EHLO out02.mta.xmission.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753796Ab0LFVWS convert rfc822-to-8bit (ORCPT ); Mon, 6 Dec 2010 16:22:18 -0500 From: ebiederm@xmission.com (Eric W. Biederman) To: jean-philippe.menil@univ-nantes.fr Cc: netdev@vger.kernel.org, Michael Leun , David Lamparter , Greg KH , davem@davemloft.net, linux-kernel@vger.kernel.org, Alexey Dobriyan , Patrick McHardy 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> <4CFD0A8F.8010906@univ-nantes.fr> Date: Mon, 06 Dec 2010 13:22:00 -0800 In-Reply-To: <4CFD0A8F.8010906@univ-nantes.fr> (Menil Jean-Philippe's message of "Mon, 06 Dec 2010 17:08:47 +0100") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8BIT X-XM-SPF: eid=;;;mid=;;;hst=in01.mta.xmission.com;;;ip=98.207.157.188;;;frm=ebiederm@xmission.com;;;spf=neutral X-XM-AID: U2FsdGVkX1+rTKdFpAiYqcXBmdgOotiZSXgfZeBPp9U= X-SA-Exim-Connect-IP: 98.207.157.188 X-SA-Exim-Mail-From: ebiederm@xmission.com X-Spam-Report: * -1.0 ALL_TRUSTED Passed through trusted hosts only via SMTP * 0.0 T_TM2_M_HEADER_IN_MSG BODY: T_TM2_M_HEADER_IN_MSG * -3.0 BAYES_00 BODY: Bayes spam probability is 0 to 1% * [score: 0.0000] * -0.0 DCC_CHECK_NEGATIVE Not listed in DCC * [sa01 1397; Body=1 Fuz1=1 Fuz2=1] * 0.4 FVGT_m_MULTI_ODD Contains multiple odd letter combinations * 0.0 T_XMDrugObfuBody_08 obfuscated drug references * 0.0 T_XMDrugObfuBody_14 obfuscated drug references * 0.0 UPPERCASE_50_75 message body is 50-75% uppercase * 0.4 UNTRUSTED_Relay Comes from a non-trusted relay X-Spam-DCC: XMission; sa01 1397; Body=1 Fuz1=1 Fuz2=1 X-Spam-Combo: ;jean-philippe.menil@univ-nantes.fr X-Spam-Relay-Country: Subject: Re: NET_NS: unregister_netdevice: waiting for lo to become free (adding ipv6 address to interface) X-Spam-Flag: No X-SA-Exim-Version: 4.2.1 (built Fri, 06 Aug 2010 16:31:04 -0600) X-SA-Exim-Scanned: Yes (on in01.mta.xmission.com) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Menil Jean-Philippe writes: > 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? 2.6.37-rc4 is working here. There were problems earlier in the earlier rcs. Can you try that? There have been a couple of different reference counting bugs between 2.6.34 and the present, and I haven't tracked them, just noticed they exist. Eric