Bug 442151 – use wait_queue_head_t to cause kernel crash on redhat3u9 on x86_64

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Bug 442151 - use wait_queue_head_t to cause kernel crash on redhat3u9 on x86_64

Summary:	use wait_queue_head_t to cause kernel crash on redhat3u9 on x86_64

Status:	CLOSED NOTABUG

Aliases:	None

Product:	Red Hat Enterprise Linux 3
Classification:	Red Hat
Component:	kernel (Show other bugs)
Sub Component:
Version:	3.9
Hardware:	x86_64 Linux

Priority	low Severity urgent
Target Milestone:	---
Target Release:	---
Assigned To:	Don Howard
QA Contact:	Martin Jenner
Docs Contact:

URL:
Whiteboard:
Keywords:

Depends On:
Blocks:
	Show dependency tree / graph

Reported:	2008-04-11 23:34 EDT by Gang He
Modified:	2008-07-02 14:23 EDT (History)
CC List:	1 user (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2008-07-02 14:23:14 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
bug source code (3.82 KB, application/x-zip-compressed) 2008-04-11 23:34 EDT, Gang He	no flags	Details
Add an attachment (proposed patch, testcase, etc.)

Groups: None (edit)

Description Gang He 2008-04-11 23:34:32 EDT

Hi all,

I found a fatal bug in Redhat Enterprise Server 3 Update 9
<2.4.21-50.EL> on x86_64 when I used "wait_queue_head_t" data
structure, the same program works very well on i386, but porting it to
x86_64 will bring Linux kernel crash, who can help to take a look at
it, thanks.
all source code are as follows:
ghe.c - kernel module source file
mk.sh - command lines to compile all source files
read.c - read operation
write.c - write operation
rhel3u9-64bit.txt - oops output

Reproduce bug:
1) run  "./mk.sh" to compile all source files
2) run "insmod ghe.o" to insert kernel module to kernel
3) run "mknod /dev/ghe xxx" to create char device file
4) run "./devread" to read data from /dev/ghe
5) run "./devwrite" to write data to /dev/ghe, bug will take place.

Comment 1 Gang He 2008-04-11 23:34:32 EDT

Created attachment 302190 [details]
bug source code

Comment 2 Gang He 2008-04-13 10:02:12 EDT

Any engineer can take a look at it, thanks!

Comment 3 Eric Sandeen 2008-05-18 14:01:22 EDT

From all appearances, this is most likely a bug in your driver, not in the
kernel, and hence probably not appropriate to file it as a bug against the RHEL3
kernel.

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