Bug 103950 - /dev/ttyX hangs at random under moderate load
Summary: /dev/ttyX hangs at random under moderate load
Keywords:
Status: CLOSED WONTFIX
Alias: None
Product: Red Hat Linux Beta
Classification: Retired
Component: kernel
Version: beta1
Hardware: i386
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Dave Jones
QA Contact: Brian Brock
URL:
Whiteboard:
: 103949 103951 (view as bug list)
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2003-09-08 11:23 UTC by Michael J. Cohen
Modified: 2015-01-04 22:03 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2004-11-20 02:01:31 UTC
Embargoed:

Attachments (Terms of Use)

Description Michael J. Cohen 2003-09-08 11:23:15 UTC 
From Bugzilla Helper:
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; .NET CLR 
1.1.4322)

Description of problem:
/dev/tty2 hangs when /dev/tty1 is producing a moderate CPU load and/or heavy IO.

killing the associated login process appears to reset the tty.

tested on two SMP machines ( dual 1GHz, ECC ) and a UP laptop.

Version-Release number of selected component (if applicable):
kernel-2.4.21-20.1.2024.2.1.nptl

How reproducible:
Always

Steps to Reproduce:
1. generate moderate to heavy CPU load and/or moderate to heavy CPU load
2. switch to tty2
3. generate moderate to heavy load, and press ctrl-c
    

Actual Results:  ctrl-c and every key pressed thereafter are ignored until 
affected /bin/login is killed.

Expected Results:  ctrl-c should have killed the process on tty2.

Additional info:

annoying :)
Comment 1 Michael J. Cohen 2003-09-08 11:23:15 UTC 
From Bugzilla Helper:
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; .NET CLR 
1.1.4322)

Description of problem:
/dev/tty2 hangs when /dev/tty1 is producing a moderate CPU load and/or heavy IO.

killing the associated login process appears to reset the tty.

tested on two SMP machines ( dual 1GHz, ECC ) and a UP laptop.

Version-Release number of selected component (if applicable):
kernel-2.4.21-20.1.2024.2.1.nptl

How reproducible:
Always

Steps to Reproduce:
1. generate moderate to heavy CPU load and/or moderate to heavy CPU load
2. switch to tty2
3. generate moderate to heavy load, and press ctrl-c
    

Actual Results:  ctrl-c and every key pressed thereafter are ignored until 
affected /bin/login is killed.

Expected Results:  ctrl-c should have killed the process on tty2.

Additional info:

annoying :)
Comment 2 Bill Nottingham 2003-09-08 16:29:20 UTC 
*** Bug 103951 has been marked as a duplicate of this bug. ***
Comment 3 Bill Nottingham 2003-09-08 16:29:27 UTC 
*** Bug 103949 has been marked as a duplicate of this bug. ***
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