Date: Thu, 5 Jun 2003 00:36:13 +0800 (KRAST) From: Eugene Grosbein <eugen@grosbein.pp.ru> To: FreeBSD-gnats-submit@FreeBSD.org Subject: kern/52943: reproducable system stuck just brefore multiuser mode Message-ID: <200306041636.h54GaCqm000271@grosbein.pp.ru> Resent-Message-ID: <200306041710.h54HAEhY016567@freefall.freebsd.org>
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>Number: 52943
>Category: kern
>Synopsis: reproducable system stuck just brefore multiuser mode
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Wed Jun 04 10:10:12 PDT 2003
>Closed-Date:
>Last-Modified:
>Originator: Eugene Grosbein
>Release: FreeBSD 4.8-STABLE i386
>Organization:
Svyaz Service JSC
>Environment:
System: FreeBSD hp.grosbein.pp.ru 4.8-STABLE FreeBSD 4.8-STABLE #0: Sun Apr 13 14:05:36 KRAST 2003 eu@grosbein.pp.ru:/usr/local/smallobj/usr/local/src/sys/HP i386
console=vidconsole
>Description:
One of my machines hangs if I press ScrollLock when
it runs /etc/rc and if I do not press ScrollLock again before
/etc/rc.local finishes. If I press ScrollLock second time
after /etc/rc.local has finished, syscons does not flush
its buffer, system is stuck in a single user mode waiting
for /bin/sh to exit. It won't: if I rlogin into the system,
I see:
# ps -p 7 -wwl
UID PID PPID CPU PRI NI VSZ RSS WCHAN STAT TT TIME COMMAND
0 7 1 141 4 0 0 0 ttywai IEs+ con 0:01,14 sh /etc/rc autoboot
Note, that kernel is alive, I can press Ctrl-T, I can
break to DDB and see:
load: 0.07 not a controlling terminal
Debugger("manual escape to debugger")
Stopped at Debugger+0x35: movb $0,in_Debugger.429
db> ps
pid proc addr uid ppid pgrp flag stat wmesg wchan cmd
143 c27825a0 c2f1b000 0 1 143 000084 3 select c02f90e0 moused
134 c2781be0 c2f48000 0 1 134 000084 3 select c02f90e0 apmd
120 c2781f20 c2f37000 25 1 120 2000184 3 pause c2f37260 sendmail
117 c2782260 c2f25000 0 1 117 000084 3 nanslp c02db310 cron
115 c2782400 c2f20000 0 1 115 000084 3 select c02f90e0 inetd
109 c27828e0 c2f13000 0 1 109 000084 3 select c02f90e0 rpc.statd
107 c2782740 c2f17000 0 1 105 000084 3 nfsd c08d3800 nfsd
106 c27832a0 c2ee6000 0 1 105 000084 3 nfsd c08d3600 nfsd
103 c2782a80 c2f0e000 0 1 103 000084 3 select c02f90e0 mountd
101 c2782c20 c2f03000 1 1 101 000184 3 select c02f90e0 portmap
96 c2782dc0 c2ef7000 0 1 96 000084 3 select c02f90e0 syslogd
57 c2782f60 c2ef3000 0 1 57 000084 3 select c02f90e0 pccardd
18 c2783100 c2eee000 0 1 18 2000084 3 pause c2eee260 adjkerntz
7 c2783440 c2ede000 0 1 7 006086 3 ttywai c07bb54c sh
6 c27835e0 c2e96000 0 0 0 000204 3 syncer c02f9008 syncer
5 c2783780 c2e93000 0 0 0 000204 3 vlruwt c2783780 vnlru
4 c2783920 c2e90000 0 0 0 000204 3 psleep c02db4dc bufdaemon
3 c2783ac0 c2e8d000 0 0 0 000204 3 psleep c02e8fe0 vmdaemon
2 c2783c60 c2e8a000 0 0 0 000204 3 psleep c02b0b38 pagedaemon
1 c2783e00 c2788000 0 0 1 004284 3 wait c2783e00 init
0 c02f8400 c0383000 0 0 0 000204 3 sched c02f8400 swapper
db> trace 7
mi_switch(c07bb54c,0,c07bb500,c2783510,c2ee0e70) at mi_switch+0x162
tsleep(c07bb54c,11a,c026c41f,0,c07bb500) at tsleep+0x1bd
ttysleep(c07bb500,c07bb54c,11a,c026c41f,0) at ttysleep+0x24
ttywait(c07bb500,c2783440,1,c02a0608,c2783560) at ttywait+0x50
exit1(c2783440,0,c2ee0fa0,c02452ca,c2783440) at exit1+0x2a9
sys_exit(c2783440,c2ee0f80,1,8068045,0) at sys_exit+0x15
syscall2(2f,2f,2f,0,8068045) at syscall2+0x1ea
Xint0x80_syscall() at Xint0x80_syscall+0x25
db>
It seems a kernel is stuck somewhere within ttywait()
called from exit1(), file src/sys/kern/kern_exit.c
>How-To-Repeat:
Note that I can reliably reproduce this but only on one
of my machines. So I suspect that depends of local settings.
So here is my /etc/rc.conf:
# This file now contains just the overrides from /etc/defaults/rc.conf
# please make all changes to this file.
dumpdev="/dev/ad0s2b"
network_interfaces="auto"
ifconfig_ep0="inet 10.58.1.2 netmask 255.255.255.252 media 10baseT/UTP"
defaultrouter="10.58.1.1"
hostname="hp.grosbein.pp.ru"
blanktime="300"
scrnmap="koi8-r2cp866"
keyrate="fast"
moused_enable="YES"
moused_flags="-r high" # Any additional flags to moused.
tcp_extensions="YES"
apm_enable="YES"
sendmail_enable="NO" # Run the sendmail daemon (or NO).
sendmail_submit_enable="NO"
sendmail_outbound_enable="NO"
sendmail_msp_queue_enable="YES"
#sendmail_msp_queue_enable="NO"
font8x8="cp866-8x8"
font8x14="cp866-8x14"
font8x16="cp866-8x16"
router_enable="NO"
firewall_enable="YES"
firewall_type="open"
keymap=ru.koi8-r.pdwn
allscreens_flags="-m on" # Set this vidcontrol mode for all virtual screens
moused_port="/dev/psm0"
syslogd_flags="-vvss"
clear_tmp_enable="YES" # Clear /tmp at startup.
inetd_enable="YES"
#inetd_flags="-wWl -a localhost"
apmd_enable="YES"
sshd_enable="NO"
#portmap_enable=YES
#nfs_server_enable=YES
#nfs_client_enable=YES
pccard_enable="YES"
pccard_ifconfig="$ifconfig_ep0"
ntpdate_enable="YES"
ntpdate_flags="-b dadv"
nfs_server_enable="YES"
nfs_server_flags="-u -n 2" # Flags to nfsd (if enabled).
pccardd_flags="-z"
gif_interfaces="gif0"
gifconfig_gif0="10.58.1.2 10.58.1.1"
ifconfig_gif0="10.58.4.1 10.58.3.1 netmask 255.255.255.0"
Then, here is my kernel config. I must note that I use
this system for general testings and its world
and kernel are built with "-O2 -march-pentium"
just to find bugs.
# HP kernel config
# 13 Apr 2003
#for strings -n 3 /kernel | grep ^___ | sed -e 's/^___//' > MYKERNEL
options INCLUDE_CONFIG_FILE
machine i386
cpu I586_CPU
ident HP
maxusers 0
#makeoptions DEBUG=-g #Build kernel with gdb(1) debug symbols
#options PNPBIOS
options CLK_CALIBRATION_LOOP
options "CLK_USE_I8254_CALIBRATION"
options CLK_USE_TSC_CALIBRATION
options INET #InterNETworking
options FFS #Berkeley Fast Filesystem
options FFS_ROOT #FFS usable as root device [keep this!]
options COMPAT_43 #Compatible with BSD 4.3 [KEEP THIS!]
options SCSI_DELAY=15000 #Delay (in ms) before probing SCSI
options IDE_DELAY=8000 # Be optimistic about Joe IDE device
options UCONSOLE #Allow users to grab the console
options USERCONFIG #boot -c editor
options VISUAL_USERCONFIG #visual boot -c editor
options KTRACE #ktrace(1) support
options CPU_SUSP_HLT
#options "NO_F00F_HACK"
options USER_LDT
#options PPP_BSDCOMP
#options PPP_DEFLATE
#options PPP_FILTER
options SYSVSHM #SYSV-style shared memory
options SYSVMSG #SYSV-style message queues
options SYSVSEM #SYSV-style semaphores
options P1003_1B #Posix P1003_1B real-time extensions
options _KPOSIX_PRIORITY_SCHEDULING
options _KPOSIX_VERSION=199309L
options ICMP_BANDLIM #Rate limit bad replies
options NSWAPDEV=3
device isa
device pci
#options AUTO_EOI_1
#options AUTO_EOI_2
# Floppy drives
device fdc0 at isa? port IO_FD1 irq 6 drq 2
device fd0 at fdc0 drive 0
# ATA and ATAPI devices
device ata
device atadisk # ATA disk drives
device atapicd # ATAPI CDROM drives
device ata0 at isa? port IO_WD1 irq 14
device ata1 at isa? port IO_WD2 irq 15 disable
options ATA_STATIC_ID #Static device numbering
# atkbdc0 controls both the keyboard and the PS/2 mouse
device atkbdc0 at isa? port IO_KBD
device atkbd0 at atkbdc? irq 1
options KBD_INSTALL_CDEV # install a CDEV entry in /dev
# Options for atkbd:
options ATKBD_DFLT_KEYMAP # specify the built-in keymap
makeoptions ATKBD_DFLT_KEYMAP="ru.koi8-r.pdwn"
device psm0 at atkbdc? irq 12
device vga0 at isa?
options VESA
#options VGA_WIDTH90
# splash screen/screen saver
pseudo-device splash
# syscons is the default console driver, resembling an SCO console
device sc0 at isa?
options SC_DFLT_FONT # compile font in
makeoptions SC_DFLT_FONT=cp866
options MAXCONS=16
options SC_HISTORY_SIZE=1000
options SC_MOUSE_CHAR=0x03
options SC_TWOBUTTON_MOUSE
#options SC_PIXEL_MODE
# Floating point support - do not disable.
device npx0 at nexus? port IO_NPX irq 13
# Power management support (see LINT for more options)
#device apm0 at nexus? flags 0x31 # Advanced Power Management
device apm0 at nexus? # Advanced Power Management
# Serial (COM) ports
device sio0 at isa? port IO_COM1 flags 0x90 irq 4
device sio1 at isa? port IO_COM2 irq 3 disable
options BREAK_TO_DEBUGGER #a BREAK on a comconsole goes to
#DDB, if available.
options CONSPEED=115200 # speed for serial console
device card
device pcic
device ep
# Parallel port
device ppc0 at isa? irq 7
device ppbus # Parallel port bus (required)
device lpt # Printer
#device plip # TCP/IP over parallel
device ppi # Parallel port interface device
device joy
#device joy0 at isa? port 0x100
# Pseudo devices - the number indicates how many units to allocated.
pseudo-device loop # Network loopback
pseudo-device ether # Ethernet support
pseudo-device sl 1 # Kernel SLIP
pseudo-device ppp 1 # Kernel PPP
#pseudo-device tun # Packet tunnel.
pseudo-device pty 64 # Pseudo-ttys (telnet etc)
#pseudo-device md # Memory "disks"
#pseudo-device gif 4 # IPv6 and IPv4 tunneling
#pseudo-device faith 1 # IPv6-to-IPv4 relaying (translation)
#pseudo-device snp
#pseudo-device vn
#pseudo-device gzip # Exec gzipped a.out's
pseudo-device speaker
# The `bpf' pseudo-device enables the Berkeley Packet Filter.
# Be aware of the administrative consequences of enabling this!
pseudo-device bpf #Berkeley packet filter
#options MSGBUF_SIZE=40960
device pcm
#device snd
#device css0 at isa? port 0x534 irq 5 drq 1 flags 0x08
#device opl0 at isa? port 0x388
#device sbmidi0 at isa? port 0x330
#device sb0 at isa? port 0x220 irq 5 drq 1
#device mpu0 at isa? port 0x330 irq 9 drq 0
#device pca
device pca0 at isa? port IO_TIMER1
#options QUOTA
options IPFIREWALL
options IPFIREWALL_VERBOSE
#options "IPFIREWALL_VERBOSE_LIMIT=100"
#options IPDIVERT
#options IPSTEALTH
#options DUMMYNET
options SOFTUPDATES
options DDB
#options DDB_UNATTENDED
options GDB_REMOTE_CHAT
options RANDOM_IP_ID
options UFS_DIRHASH
#options PQ_CACHESIZE=128 # color for 128k/16k cache
options SHOW_BUSYBUFS
#options SHUTDOWN_BEEP
options PCIC_RESUME_RESET
options IPSEC
options IPSEC_ESP
pseudo-device gif 1 # IPv6 and IPv4 tunneling
#device wi
>Fix:
Unknown for me
Eugene Grosbein
>Release-Note:
>Audit-Trail:
>Unformatted:
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