On 1 May 2008, Jeff Dike outgrape: > On Wed, Apr 30, 2008 at 10:49:27PM +0100, Nix wrote: >> Done, and tested by stepping the time (five seconds --- five seconds per >> day! I have pendulum clocks that keep better time than that!), and, >> oops, instant loop as before, with this debugging patch applied, which >> did not fire... > > Hmmm. I stepped the time (date -set "now+5sec") and nothing bad > happened. Is that more or less what you did?
loki:/tmp# /usr/bin/ntpdate -bv hades 30 Apr 22:45:52 ntpdate[8833]: ntpdate [EMAIL PROTECTED] Fri Feb 22 18:37:11 UTC 2008 (1) 30 Apr 22:45:52 ntpdate[8833]: step time server 192.168.14.18 offset -5.728539 sec so in effect yes :) Hm. A five-second skip forwards via date --set works fine. A five-second skip *backwards*, and instant boom. (I suspect from earlier failures that sometimes time-slewing can cause this too, because normally I run ntpd all the time, and that should only slew the time under normal circumstances, never skip it: yet UML 2.6.24+ visited hang city every few days.) I've been busy birthdaying today, but tomorrow I'll instrument things and figure out just where a backward skip hangs and why (assuming you haven't already done so: it's my own damn fault for being so laggardly, I should have done this weeks ago). > Can you send me your config? Here: CONFIG_DEFCONFIG_LIST="arch/$ARCH/defconfig" CONFIG_GENERIC_HARDIRQS=y CONFIG_UML=y CONFIG_MMU=y CONFIG_NO_IOMEM=y CONFIG_LOCKDEP_SUPPORT=y CONFIG_GENERIC_CALIBRATE_DELAY=y CONFIG_GENERIC_BUG=y CONFIG_GENERIC_TIME=y CONFIG_GENERIC_CLOCKEVENTS=y CONFIG_IRQ_RELEASE_METHOD=y CONFIG_HZ=100 CONFIG_MPENTIUMIII=y CONFIG_X86_CMPXCHG=y CONFIG_X86_L1_CACHE_SHIFT=5 CONFIG_X86_XADD=y CONFIG_X86_WP_WORKS_OK=y CONFIG_X86_INVLPG=y CONFIG_X86_BSWAP=y CONFIG_X86_POPAD_OK=y CONFIG_X86_GOOD_APIC=y CONFIG_X86_INTEL_USERCOPY=y CONFIG_X86_USE_PPRO_CHECKSUM=y CONFIG_X86_P6_NOP=y CONFIG_X86_TSC=y CONFIG_X86_CMOV=y CONFIG_X86_MINIMUM_CPU_FAMILY=6 CONFIG_X86_DEBUGCTLMSR=y CONFIG_UML_X86=y CONFIG_X86_32=y CONFIG_RWSEM_XCHGADD_ALGORITHM=y CONFIG_SEMAPHORE_SLEEPERS=y CONFIG_ARCH_HAS_SC_SIGNALS=y CONFIG_ARCH_REUSE_HOST_VSYSCALL_AREA=y CONFIG_GENERIC_HWEIGHT=y CONFIG_ARCH_SUPPORTS_AOUT=y CONFIG_SELECT_MEMORY_MODEL=y CONFIG_FLATMEM_MANUAL=y CONFIG_FLATMEM=y CONFIG_FLAT_NODE_MEM_MAP=y CONFIG_SPLIT_PTLOCK_CPUS=4 CONFIG_ZONE_DMA_FLAG=0 CONFIG_VIRT_TO_BUS=y CONFIG_GENERIC_CLOCKEVENTS_BUILD=y CONFIG_LD_SCRIPT_DYN=y CONFIG_BINFMT_ELF=y CONFIG_MCONSOLE=y CONFIG_KERNEL_STACK_ORDER=2 CONFIG_EXPERIMENTAL=y CONFIG_BROKEN_ON_SMP=y CONFIG_INIT_ENV_ARG_LIMIT=128 CONFIG_LOCALVERSION="" CONFIG_SYSVIPC=y CONFIG_SYSVIPC_SYSCTL=y CONFIG_POSIX_MQUEUE=y CONFIG_BSD_PROCESS_ACCT=y CONFIG_LOG_BUF_SHIFT=14 CONFIG_CGROUPS=y CONFIG_GROUP_SCHED=y CONFIG_FAIR_GROUP_SCHED=y CONFIG_RT_GROUP_SCHED=y CONFIG_USER_SCHED=y CONFIG_RELAY=y CONFIG_NAMESPACES=y CONFIG_CC_OPTIMIZE_FOR_SIZE=y CONFIG_SYSCTL=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_BASE_FULL=y CONFIG_FUTEX=y CONFIG_ANON_INODES=y CONFIG_EPOLL=y CONFIG_SIGNALFD=y CONFIG_TIMERFD=y CONFIG_EVENTFD=y CONFIG_SHMEM=y CONFIG_VM_EVENT_COUNTERS=y CONFIG_SLAB=y CONFIG_PROC_PAGE_MONITOR=y CONFIG_SLABINFO=y CONFIG_RT_MUTEXES=y CONFIG_BASE_SMALL=0 CONFIG_BLOCK=y CONFIG_BLK_DEV_IO_TRACE=y CONFIG_IOSCHED_NOOP=y CONFIG_IOSCHED_DEADLINE=y CONFIG_DEFAULT_DEADLINE=y CONFIG_DEFAULT_IOSCHED="deadline" CONFIG_CLASSIC_RCU=y CONFIG_BLK_DEV=y CONFIG_BLK_DEV_UBD=y CONFIG_BLK_DEV_COW_COMMON=y CONFIG_STDERR_CONSOLE=y CONFIG_STDIO_CONSOLE=y CONFIG_SSL=y CONFIG_NULL_CHAN=y CONFIG_PORT_CHAN=y CONFIG_PTY_CHAN=y CONFIG_TTY_CHAN=y CONFIG_XTERM_CHAN=y CONFIG_CON_ZERO_CHAN="fd:0,fd:1" CONFIG_CON_CHAN="tty" CONFIG_SSL_CHAN="pty" CONFIG_UNIX98_PTYS=y CONFIG_UML_RANDOM=y CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug" CONFIG_STANDALONE=y CONFIG_PREVENT_FIRMWARE_BUILD=y CONFIG_NET=y CONFIG_PACKET=y CONFIG_PACKET_MMAP=y CONFIG_UNIX=y CONFIG_INET=y CONFIG_IP_MULTICAST=y CONFIG_IP_ADVANCED_ROUTER=y CONFIG_ASK_IP_FIB_HASH=y CONFIG_IP_FIB_HASH=y CONFIG_IP_MULTIPLE_TABLES=y CONFIG_SYN_COOKIES=y CONFIG_INET_DIAG=y CONFIG_INET_TCP_DIAG=y CONFIG_TCP_CONG_ADVANCED=y CONFIG_TCP_CONG_CUBIC=y CONFIG_DEFAULT_CUBIC=y CONFIG_DEFAULT_TCP_CONG="cubic" CONFIG_NETFILTER=y CONFIG_NETFILTER_ADVANCED=y CONFIG_NF_CONNTRACK=y CONFIG_NF_CT_ACCT=y CONFIG_NF_CONNTRACK_MARK=y CONFIG_NF_CT_PROTO_UDPLITE=y CONFIG_NF_CONNTRACK_FTP=y CONFIG_NF_CONNTRACK_IRC=y CONFIG_NF_CONNTRACK_SIP=y CONFIG_NETFILTER_XTABLES=y CONFIG_NETFILTER_XT_TARGET_CLASSIFY=y CONFIG_NETFILTER_XT_TARGET_MARK=y CONFIG_NETFILTER_XT_TARGET_NFQUEUE=y CONFIG_NETFILTER_XT_MATCH_CONNLIMIT=y CONFIG_NETFILTER_XT_MATCH_CONNMARK=y CONFIG_NETFILTER_XT_MATCH_HELPER=y CONFIG_NETFILTER_XT_MATCH_IPRANGE=y CONFIG_NETFILTER_XT_MATCH_LIMIT=y CONFIG_NETFILTER_XT_MATCH_MARK=y CONFIG_NETFILTER_XT_MATCH_OWNER=y CONFIG_NETFILTER_XT_MATCH_MULTIPORT=y CONFIG_NETFILTER_XT_MATCH_QUOTA=y CONFIG_NETFILTER_XT_MATCH_STATE=y CONFIG_NETFILTER_XT_MATCH_HASHLIMIT=y CONFIG_NF_CONNTRACK_IPV4=y CONFIG_NF_CONNTRACK_PROC_COMPAT=y CONFIG_IP_NF_IPTABLES=y CONFIG_IP_NF_MATCH_RECENT=y CONFIG_IP_NF_MATCH_ADDRTYPE=y CONFIG_IP_NF_FILTER=y CONFIG_IP_NF_TARGET_REJECT=y CONFIG_IP_NF_TARGET_LOG=y CONFIG_NF_NAT=y CONFIG_NF_NAT_NEEDED=y CONFIG_IP_NF_TARGET_REDIRECT=y CONFIG_NF_NAT_FTP=y CONFIG_NF_NAT_IRC=y CONFIG_NF_NAT_SIP=y CONFIG_IP_NF_MANGLE=y CONFIG_IP_NF_TARGET_ECN=y CONFIG_NET_SCHED=y CONFIG_NET_SCH_CBQ=y CONFIG_NET_SCH_HTB=y CONFIG_NET_SCH_HFSC=y CONFIG_NET_SCH_PRIO=y CONFIG_NET_SCH_RED=y CONFIG_NET_SCH_SFQ=y CONFIG_NET_SCH_TEQL=y CONFIG_NET_SCH_TBF=y CONFIG_NET_SCH_GRED=y CONFIG_NET_SCH_DSMARK=y CONFIG_NET_SCH_INGRESS=y CONFIG_NET_CLS=y CONFIG_NET_CLS_BASIC=y CONFIG_NET_CLS_TCINDEX=y CONFIG_NET_CLS_ROUTE4=y CONFIG_NET_CLS_ROUTE=y CONFIG_NET_CLS_FW=y CONFIG_NET_CLS_U32=y CONFIG_CLS_U32_PERF=y CONFIG_CLS_U32_MARK=y CONFIG_NET_CLS_RSVP=y CONFIG_NET_EMATCH=y CONFIG_NET_EMATCH_STACK=32 CONFIG_NET_EMATCH_CMP=y CONFIG_NET_EMATCH_NBYTE=y CONFIG_NET_EMATCH_U32=y CONFIG_NET_EMATCH_META=y CONFIG_NET_CLS_ACT=y CONFIG_NET_ACT_POLICE=y CONFIG_NET_ACT_GACT=y CONFIG_NET_ACT_PEDIT=y CONFIG_NET_SCH_FIFO=y CONFIG_FIB_RULES=y CONFIG_UML_NET=y CONFIG_UML_NET_TUNTAP=y CONFIG_NETDEVICES=y CONFIG_DUMMY=y CONFIG_TUN=y CONFIG_EXT2_FS=y CONFIG_EXT2_FS_XATTR=y CONFIG_EXT2_FS_POSIX_ACL=y CONFIG_EXT2_FS_SECURITY=y CONFIG_FS_MBCACHE=y CONFIG_FS_POSIX_ACL=y CONFIG_DNOTIFY=y CONFIG_INOTIFY=y CONFIG_INOTIFY_USER=y CONFIG_QUOTA=y CONFIG_PRINT_QUOTA_WARNING=y CONFIG_QUOTACTL=y CONFIG_GENERIC_ACL=y CONFIG_PROC_FS=y CONFIG_PROC_SYSCTL=y CONFIG_SYSFS=y CONFIG_TMPFS=y CONFIG_TMPFS_POSIX_ACL=y CONFIG_CONFIGFS_FS=y CONFIG_NETWORK_FILESYSTEMS=y CONFIG_NFS_FS=y CONFIG_NFS_V3=y CONFIG_NFS_V3_ACL=y CONFIG_LOCKD=y CONFIG_LOCKD_V4=y CONFIG_NFS_ACL_SUPPORT=y CONFIG_NFS_COMMON=y CONFIG_SUNRPC=y CONFIG_MSDOS_PARTITION=y CONFIG_KEYS=y CONFIG_SECURITY=y CONFIG_SECURITY_CAPABILITIES=y CONFIG_SECURITY_FILE_CAPABILITIES=y CONFIG_SECURITY_DEFAULT_MMAP_MIN_ADDR=16384 CONFIG_CRYPTO=y CONFIG_CRYPTO_ALGAPI=y CONFIG_CRYPTO_MANAGER=y CONFIG_CRYPTO_SHA1=y CONFIG_BITREVERSE=y CONFIG_CRC32=y CONFIG_PLIST=y CONFIG_HAS_DMA=y CONFIG_ENABLE_WARN_DEPRECATED=y CONFIG_ENABLE_MUST_CHECK=y CONFIG_DEBUG_FS=y CONFIG_DEBUG_KERNEL=y CONFIG_DEBUG_BUGVERBOSE=y CONFIG_DEBUG_INFO=y CONFIG_FRAME_POINTER=y 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