Date: Wed, 29 Sep 1999 01:03:52 -0700 (PDT) From: riccardo@torrini.org To: freebsd-gnats-submit@freebsd.org Subject: kern/14034: gettimeofday() returns negative value Message-ID: <19990929080352.7449C154A3@hub.freebsd.org>
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>Number: 14034
>Category: kern
>Synopsis: gettimeofday() returns negative value
>Confidential: no
>Severity: critical
>Priority: high
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Wed Sep 29 01:10:00 PDT 1999
>Closed-Date:
>Last-Modified:
>Originator: Riccardo Torrini
>Release: 3.3-STABLE (cvsuped on Sep 20, 1999)
>Organization:
ESAOTE s.p.a.
>Environment:
FreeBSD snail.fi.esaote.it 3.3-STABLE FreeBSD 3.3-STABLE #0: Wed Sep 22 08:57:26 CEST 1999 root@snail.fi.esaote.it:/usr/src/sys/compile/OCTOPUSSY i386
The machine is an HP NetServer 4/66-LC (486/DX2-66) used as internal
router with 4 Intel EtherExpress Pro/10 on isa and internet gateway
with 56k internal usrobotics modem and it happens every some day.
I recompiled world and kernel, after cvsupping, on end of august,
begin of september, 20 and 24 of september. No more often because
I need full 24 hours to build and install :-(
-----8<-----[ /var/run/dmesg.boot ]-----8<-----
Copyright (c) 1992-1999 FreeBSD Inc.
Copyright (c) 1982, 1986, 1989, 1991, 1993
The Regents of the University of California. All rights reserved.
FreeBSD 3.3-STABLE #0: Wed Sep 22 08:57:26 CEST 1999
root@snail.fi.esaote.it:/usr/src/sys/compile/OCTOPUSSY
Timecounter "i8254" frequency 1193182 Hz
CPU: i486 DX2 (486-class CPU)
Origin = "GenuineIntel" Id = 0x435 Stepping = 5
Features=0x3<FPU,VME>
real memory = 92274688 (90112K bytes)
avail memory = 86380544 (84356K bytes)
Preloaded elf kernel "kernel" at 0xc0318000.
Preloaded splash_image_data "/boot/daemon.bmp" at 0xc031809c.
Preloaded elf module "splash_bmp.ko" at 0xc03180ec.
eisa0: <HWPc081 (System Board)>
Probing for devices on the EISA bus
ahc0: <Adaptec aic7770 SCSI host adapter> at 0xbc00-0xbcff irq 15
ahc0: on eisa0 slot 11
ahc0: aic7770 >= Rev E, Twin Channel, A SCSI Id=7, B SCSI Id=7, primary A, 4/255 SCBs
Probing for devices on the ISA bus:
sc0 on isa
sc0: VGA color <16 virtual consoles, flags=0x0>
atkbdc0 at 0x60-0x6f on motherboard
atkbd0 irq 1 on isa
psm0 not found
sio2 at 0x3e8-0x3ef irq 4 on isa
sio2: type 16550A
fdc0 at 0x3f0-0x3f7 irq 6 drq 2 on isa
fdc0: FIFO enabled, 8 bytes threshold
fd0: 1.44MB 3.5in
wdc0 at 0x1f0-0x1f7 irq 14 on isa
wdc0: unit 1 (atapi): <FX001DE/K01>, removable, intr, iordis
acd0: drive speed 689KB/sec, 128KB cache
acd0: supported read types:
acd0: Audio: play, 255 volume levels
acd0: Mechanism: ejectable tray
acd0: Medium: no/blank disc inside, unlocked
ppc0 at 0x378 irq 7 on isa
ppc0: PC87332 chipset (NIBBLE-only) in COMPATIBLE mode
ex0 at 0x2a0-0x2af irq 10 on isa
ex0: Intel EtherExpress Pro/10, address 00:aa:00:ad:61:fd, connector TPE
ex1 at 0x2b0-0x2bf irq 11 on isa
ex1: Intel EtherExpress Pro/10, address 00:aa:00:ad:64:f0, connector TPE
ex2 at 0x2c0-0x2cf irq 3 on isa
ex2: Intel EtherExpress Pro/10, address 00:aa:00:ae:5c:e7, connector TPE
ex3 at 0x2d0-0x2df irq 5 on isa
ex3: Intel EtherExpress Pro/10, address 00:aa:00:ad:63:8e, connector TPE
vga0 at 0x3b0-0x3df maddr 0xa0000 msize 131072 on isa
npx0 on motherboard
npx0: INT 16 interface
ccd0-3: Concatenated disk drivers
IP packet filtering initialized, divert enabled, rule-based forwarding enabled, logging disabled
DUMMYNET initialized (990504)
IP Filter: initialized. Default = pass all, Logging = enabled
Waiting 15 seconds for SCSI devices to settle
da0 at ahc0 bus 0 target 0 lun 0
da0: <IBM OEM 0662S12 3 30> Fixed Direct Access SCSI-2 device
da0: 10.000MB/s transfers (10.000MHz, offset 15), Tagged Queueing Enabled
da0: 1003MB (2055035 512 byte sectors: 64H 32S/T 1003C)
da1 at ahc0 bus 0 target 1 lun 0
da1: <IBM OEM 0662S12 1011> Fixed Direct Access SCSI-2 device
da1: 10.000MB/s transfers (10.000MHz, offset 15), Tagged Queueing Enabled
da1: 1003MB (2055035 512 byte sectors: 64H 32S/T 1003C)
da3 at ahc0 bus 0 target 3 lun 0
da3: <SEAGATE ST31230N 0594> Fixed Direct Access SCSI-2 device
da3: 10.000MB/s transfers (10.000MHz, offset 15), Tagged Queueing Enabled
da3: 1010MB (2069860 512 byte sectors: 64H 32S/T 1010C)
da2 at ahc0 bus 0 target 2 lun 0
da2: <HP 1.050 GB #A2 0180> Fixed Direct Access SCSI-2 device
da2: 10.000MB/s transfers (10.000MHz, offset 15), Tagged Queueing Enabled
da2: 1001MB (2051460 512 byte sectors: 64H 32S/T 1001C)
changing root device to da0s1a
-----8<-----[ /usr/src/sys/i386/conf/OCTOPUSSY ]-----8<-----
# $Id: GENERIC,v 1.143.2.2 1999/02/15 02:50:07 des Exp $
# Modified by Riccardo "VIC" Torrini for OCTOPUSSY
machine "i386"
cpu "I386_CPU"
cpu "I486_CPU"
ident OCTOPUSSY
maxusers 32
options INET #InterNETworking
options IPX #IPX/SPX communications protocols
options FFS #Berkeley Fast Filesystem
options FFS_ROOT #FFS usable as root device [keep this!]
options MFS #Memory Filesystem
options MFS_ROOT #MFS usable as root device, "MFS" req'ed
options NFS #Network Filesystem
options NFS_ROOT #NFS usable as root device, "NFS" req'ed
options MSDOSFS #MSDOS Filesystem
options "CD9660" #ISO 9660 Filesystem
options "CD9660_ROOT" #CD-ROM usable as root. "CD9660" req'ed
options PROCFS #Process filesystem
options "COMPAT_43" #Compatible with BSD 4.3 [KEEP THIS!]
options SCSI_DELAY=15000 #Be pessimistic about Joe SCSI device
options UCONSOLE #Allow users to grab the console
options FAILSAFE #Be conservative
options USERCONFIG #boot -c editor
options VISUAL_USERCONFIG #visual boot -c editor
config kernel root on da0
controller isa0
controller eisa0
options "EISA_SLOTS=12"
controller pci0
controller fdc0 at isa? port "IO_FD1" bio irq 6 drq 2
disk fd0 at fdc0 drive 0
options "CMD640" # work around CMD640 chip deficiency
controller wdc0 at isa? port "IO_WD1" bio irq 14
options ATAPI #Enable ATAPI support for IDE bus
options ATAPI_STATIC #Don't do it as an LKM
device acd0 #IDE CD-ROM
controller ahc0
controller scbus0
device da0
device cd0 #Only need one of these, the code dynamically grows
# atkbdc0 controlls both the keyboard and the PS/2 mouse
controller atkbdc0 at isa? port IO_KBD tty
device atkbd0 at isa? tty irq 1
device psm0 at isa? tty irq 12
device vga0 at isa? port ? conflicts
# splash screen/screen saver
pseudo-device splash
options "VM86"
options VESA # needs VM86 defined too!!
# syscons is the default console driver, resembling an SCO console
device sc0 at isa? tty
device npx0 at isa? port IO_NPX irq 13
device sio2 at isa? port "IO_COM3" tty irq 4
# Parallel port
device ppc0 at isa? port? net irq 7
controller ppbus0
device nlpt0 at ppbus?
# Network
device ex0 at isa? port 0x2a0 net irq 10
device ex1 at isa? port 0x2b0 net irq 11
device ex2 at isa? port 0x2c0 net irq 3
device ex3 at isa? port 0x2d0 net irq 5
pseudo-device loop
pseudo-device ether
pseudo-device sl 1
pseudo-device ppp 1
pseudo-device tun 1
pseudo-device pty 16
pseudo-device gzip # Exec gzipped a.out's
pseudo-device speaker #Play IBM BASIC-style noises out your speaker
pseudo-device ccd 4 #Concatenated disk driver
options SYSVSHM
options SYSVMSG
pseudo-device bpfilter 4 #Berkeley packet filter
options IPFIREWALL #firewall
options IPFIREWALL_FORWARD #enable transparent proxy support
options IPDIVERT #divert sockets
options IPFILTER #kernel ipfilter support
options IPFILTER_LOG #ipfilter logging
options "ICMP_BANDLIM"
options DUMMYNET
>Description:
gettimeofday() sometimes returns negative values for microseconds.
Already submitted as PR misc/13992 (routed exit after some day of
work with signal 6, core dump).
>How-To-Repeat:
-----8<-----[ gettimeofday_test.c ]-----8<-----
#include <sys/time.h>
#include <err.h>
#include <stdio.h>
void
main()
{
struct timeval tp;
do {
if (gettimeofday(&tp, (struct timezone *)NULL) == -1) {
err(1, "gettimeofday");
}
if (tp.tv_usec < 0) {
errx(1, "invalid time returned: %ld:%ld",
tp.tv_sec, tp.tv_usec);
}
} while (1);
}
=====[ output on my machine ]=====
After about 20minutes:
gettimeofday_test: invalid time returned: 938527821:-695331771
# sysctl kern.timecounter.method machdep.i8254_freq
kern.timecounter.method: 0
machdep.i8254_freq: 1193182
>Fix:
I have work-around with a script that poll processes and
respawn "routed -s" when it dies. Not a real fix... :-(
>Release-Note:
>Audit-Trail:
>Unformatted:
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