Date: Wed, 17 Nov 2010 00:13:27 GMT From: Ben Cadieux <ben.cadieux@gmail.com> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/152310: Serial I/O hangs in FreeBSD 8.x Message-ID: <201011170013.oAH0DRNr085642@www.freebsd.org> Resent-Message-ID: <201011170020.oAH0K9Ij038819@freefall.freebsd.org>
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>Number: 152310
>Category: kern
>Synopsis: Serial I/O hangs in FreeBSD 8.x
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Wed Nov 17 00:20:09 UTC 2010
>Closed-Date:
>Last-Modified:
>Originator: Ben Cadieux
>Release: 8.1-STABLE
>Organization:
>Environment:
FreeBSD underworld.twinmaple.com 8.1-STABLE FreeBSD 8.1-STABLE #0: Wed Oct 13 15:42:29 PDT 2010 sol@underworld.twinmaple.com:/usr/obj/usr/src/sys/UNDERWORLD amd64
>Description:
I have HylaFax running in a jail, sending faxouts on /dev/cuau0 - after sending several faxes (~20 - 30), modem communication simply hangs.
I can terminate all faxing processes, reset the modem and attempt to re-initialize it without any luck. It does not respond at all until I reboot the server.
I found pr kern/140947 which is a very similar report and have verified that I am using puc/uart updated beyond this point.
murgo% pstat -t
LINE INQ CAN LIN LOW OUTQ USE LOW COL SESS PGID STATE
sysmouse 0 0 0 0 0 0 0 0 0 0 -
ttyu0 0 0 0 0 0 0 0 99999 0 0 IC
ttyu1 0 0 0 0 0 0 0 13 0 0 IC
ttyu2 0 0 0 0 0 0 0 11 0 0 IC
ttyv0 1920 0 0 192 1984 0 199 1712 49247 49247 Oicl
ttyv1 1920 0 0 192 1984 0 199 19 49245 49245 Oil
ttyv2 1920 0 0 192 1984 0 199 7 49244 49244 Oil
ttyv3 1920 0 0 192 1984 0 199 7 2228 2228 Oil
ttyv4 1920 0 0 192 1984 0 199 7 2229 2229 Oil
ttyv5 1920 0 0 192 1984 0 199 7 2230 2230 Oil
ttyv6 1920 0 0 192 1984 0 199 7 2231 2231 Oil
ttyv7 1920 0 0 192 1984 0 199 7 2232 2232 Oil
ttyv8 0 0 0 0 0 0 0 0 0 0 -
ttyv9 0 0 0 0 0 0 0 0 0 0 -
ttyva 0 0 0 0 0 0 0 0 0 0 -
ttyvb 0 0 0 0 0 0 0 0 0 0 -
ttyvc 0 0 0 0 0 0 0 0 0 0 -
ttyvd 0 0 0 0 0 0 0 0 0 0 -
ttyve 0 0 0 0 0 0 0 0 0 0 -
ttyvf 0 0 0 0 0 0 0 0 0 0 -
pts/1 0 0 0 0 0 0 0 12 57369 0 G
pts/0 0 0 0 0 0 0 0 0 78315 0 G
pts/2 1920 0 0 192 1984 0 199 7 45529 45534 Oi
murgo% dmesg | grep uart
uart0: <16550 or compatible> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0
uart0: [FILTER]
uart1: <16550 or compatible> port 0x2f8-0x2ff irq 3 on acpi0
uart1: [FILTER]
uart2: <16550 or compatible> port 0x3e8-0x3ef irq 5 on acpi0
uart2: [FILTER]
>How-To-Repeat:
Using cuau0 for an hour or so seems to repeat the problem for me.
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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