Date: Thu, 22 May 2003 16:08:37 +0100 From: Fergus Cameron <fergus@cobbled.net> To: questions@freebsd.org Subject: SIO buffer overflows Message-ID: <20030522150837.GA3250@pooh.cobbled.net> Resent-Message-ID: <200305291500.h4TF0Kqb002291@pooh.cobbled.net>
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--pWyiEgJYm5f9v55/ Content-Type: text/plain; charset=us-ascii Content-Disposition: inline i've been running BSD as a gateway on my old i486 for a few years now and have just reconnected my modem (was on DSL). unfortunately there is a constant problem with sio buffer overflows. not surprising i hear you say as it's in the bugs section of sio(4). still, the system is running 5.0 release well and i'm reluctant to decomission it over something trivial. anyone ideas on how to tune to eliminate the overflows? failing that what version would i need to drop back to 4, 3? i don't remember the problem existing in late 4 (4.6-4.7) but cannot verify 100% at the moment. i've attached the dmesg output including errors from sio1@57600. the test was a simple -- tip to the modem and then ati4 to generate enough output for the overflow. thanks for any advice. --pWyiEgJYm5f9v55/ Content-Type: text/plain; charset=us-ascii Content-Disposition: attachment; filename=dmesg Copyright (c) 1992-2003 The FreeBSD Project. Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994 The Regents of the University of California. All rights reserved. FreeBSD 5.0-CURRENT #2: Mon Mar 31 23:27:49 GMT 2003 fergus@eyore.cobbled.net:/usr/share/software/binary/FreeBSD/build/usr/share/software/source/FreeBSD/FUTURE/sys/TIGGER Preloaded elf kernel "/boot/kernel/kernel" at 0xc0386000. Timecounter "i8254" frequency 1193182 Hz CPU: i486DX (486-class CPU) real memory = 37748736 (36 MB) avail memory = 32931840 (31 MB) Allocating major#253 to "net" Allocating major#252 to "g_ctl" npx0: <math processor> on motherboard npx0: INT 16 interface isa0: <ISA bus> on motherboard orm0: <Option ROM> at iomem 0xc0000-0xc7fff on isa0 ata0 at port 0x3f6,0x1f0-0x1f7 irq 14 on isa0 ata1 at port 0x376,0x170-0x177 irq 15 on isa0 atkbdc0: <Keyboard controller (i8042)> at port 0x64,0x60 on isa0 atkbd0: <AT Keyboard> flags 0x1 irq 1 on atkbdc0 ed0 at port 0x280-0x29f iomem 0xd8000 irq 10 on isa0 ed0: address 00:40:05:aa:98:51, type NE2000 (16 bit) ed1 at port 0x300-0x31f iomem 0xd0000 irq 5 on isa0 ed1: address 00:40:05:aa:44:71, type NE2000 (16 bit) fdc0: <NEC 765 or clone> at port 0x3f7,0x3f0-0x3f5 irq 6 drq 2 on isa0 fd0: <1440-KB 3.5" drive> on fdc0 drive 0 Allocating major#251 to "devstat" sc0: <System console> at flags 0x100 on isa0 sc0: VGA <16 virtual consoles, flags=0x300> sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0 sio0: type 16450 sio1 at port 0x2f8-0x2ff irq 3 on isa0 sio1: type 16450 vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0 Timecounters tick every 10.000 msec IPsec: Initialized Security Association Processing. ad0: 520MB <ST3660A> [1057/16/63] at ata0-master PIO3 ad1: 204MB <ST3243A> [1024/12/34] at ata0-slave PIO0 acd0: DVD-RAM <CD220E> at ata1-slave PIO2 Mounting root from ufs:/dev/ad0s1a WARNING: / was not properly dismounted WARNING: /usr was not properly dismounted WARNING: /var was not properly dismounted stray irq 7 stray irq 7 sio1: 21 more silo overflows (total 21) sio1: 19 more silo overflows (total 40) sio1: 21 more silo overflows (total 61) sio1: 1 more silo overflow (total 62) --pWyiEgJYm5f9v55/--
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