From owner-freebsd-hackers Sat Mar 30 14:20:49 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id OAA16563 for hackers-outgoing; Sat, 30 Mar 1996 14:20:49 -0800 (PST) Received: from wcarchive.cdrom.com (wcarchive.cdrom.com [165.113.58.253]) by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id OAA16549 for ; Sat, 30 Mar 1996 14:20:33 -0800 (PST) Received: from dg-rtp.dg.com (dg-rtp.rtp.dg.com [128.222.1.2]) by wcarchive.cdrom.com (8.6.12/8.6.9) with SMTP id OAA28977 for ; Sat, 30 Mar 1996 14:19:26 -0800 Received: by dg-rtp.dg.com (5.4R3.10/dg-rtp-v02) id AA14824; Sat, 30 Mar 1996 17:20:05 -0500 Received: from ponds by dg-rtp.dg.com.rtp.dg.com; Sat, 30 Mar 1996 17:20 EST Received: (rivers@localhost) by ponds.UUCP (8.6.12/8.6.5) id QAA00365; Sat, 30 Mar 1996 16:41:36 -0500 Date: Sat, 30 Mar 1996 16:41:36 -0500 From: Thomas David Rivers Message-Id: <199603302141.QAA00365@ponds.UUCP> To: bde@zeta.org.au, freebsd-hackers@wcarchive.cdrom.com Subject: SIO lock-ups.. Content-Type: text Sender: owner-hackers@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk Ok - It's been a while since anyone's heard from me... but I'm once again trying to dig out from under a pile of mail and find time to contribute. Anyway - I've been trying to track down why my serial line locks up when receiving data at 38400 baud. The symptoms are that the modem is pumping bytes to the machine as fast as it can (as evidenced by the RX light) - but nothing is being delivered from the sio driver. Also, I can't get the sio driver to send anything. Until I applied the spl.h fix for getting a better SWI_TTY_MASK, I couldn't do anything after sio locked up except reboot (even with drainwait set to 1.) After the fix, I can kill the process; after a second - it actually dies (that's a big improvement, but I'd still like to receive the data :-) ) Details - this is FreeBSD 2.1-RELEASE, running on a 386DX-33 with a math co-processor, and a 16550A serial. Bruce - do you have any ideas? - Dave Rivers - p.s. If anyone has a suggestion on how to wade through 39meg of mail; *please* let me know :-) At this point mail(1) isn't too wonderful :-)