Bug 110011 – "halt -fn" and "halt -f" do not halt the machine

Bug 110011 - "halt -fn" and "halt -f" do not halt the machine

Summary:	"halt -fn" and "halt -f" do not halt the machine

Status:	CLOSED NOTABUG

Aliases:	None

Product:	Red Hat Enterprise Linux 2.1
Classification:	Red Hat
Component:	kernel (Show other bugs)
Sub Component:
Version:	2.1
Hardware:	i386 Linux

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Jason Baron
QA Contact:	Brian Brock
Docs Contact:

URL:
Whiteboard:
Keywords:

Depends On:
Blocks:
	Show dependency tree / graph

Reported:	2003-11-13 17:17 EST by Lon Hohberger
Modified:	2013-03-06 00:56 EST (History)
CC List:	3 users (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2004-01-04 21:05:50 EST
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
strace output of "halt -fn", dmesg, etc. (11.06 KB, text/plain) 2003-11-13 17:21 EST, Lon Hohberger	no flags	Details
Add an attachment (proposed patch, testcase, etc.)

Groups: None (edit)

Comment 1 Lon Hohberger 2003-11-13 17:20:15 EST

Description: Running "halt -fn" or "halt -f" doesn't halt the machine
as expected.

Version-Release: 2.4.9-e.27
How reproducible: 100%
Steps to Reproduce: Run "halt -fn"
Actual results: Machine running; no processes affected.
Expected results: Halted machine.

Comment 2 Lon Hohberger 2003-11-13 17:21:31 EST

Created attachment 95959 [details]
strace output of "halt -fn", dmesg, etc.

Attaching dmesg / strace output.

Comment 3 Jason Baron 2003-12-04 11:13:16 EST

As some more info, this behavior is not specific to RHEL 2.1.
Apparently on a 'halt -fn', a SIGTSTP is sent to process 1, or 'init'.
Also a HALT flag is passed to the reboot syscall. That syscall doesn't
do anything in practice on the x86 architecture. Thus, any differences
in 'halt -fn' behavior would appear to be non-kernel related. My
thought on this is that halting 'init' is probably possible of
creating unpredictable system-wide consequences. The manpage for halt
isn't specific enough in the -f case, to suggest to me that this
behavior is inconsistent with the manpage. Thus, i would suggest
closing this as not a bug.

Comment 4 Tim Burke 2004-01-04 21:05:50 EST

Any benefit to updating the manpage accordingly?

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