Bug 142713

Summary:	udevstart segfaults with certain IDE chipsets
Product:	[Fedora] Fedora	Reporter:	Enrico Scholz <rh-bugzilla>
Component:	udev	Assignee:	Harald Hoyer <harald>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	3	CC:	chowell
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	udev-039-10.FC3.6	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2004-12-16 16:59:01 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Enrico Scholz 2004-12-13 09:35:19 UTC

Description of problem:

/sbin/udevstart segfaults on an ATIIXP chipset which is not supported
well by the kernel yet. There, /proc/ide/hda/media can not be read
(EIO error) and udevstart seems to give a null-pointer to an SELinux
function checking the media-type.

I do not have the logs available ATM, but can them provide when needed.


Version-Release number of selected component (if applicable):

udev-039-10.FC3.5


How reproducible:

100%

Comment 1 Enrico Scholz 2004-12-14 10:11:10 UTC

responsible code-sniplets are:


---- selinux.h ----

| static inline int selinux_get_media(char *path, int mode, char **media)
| ...
|         *media = NULL;
|         ...
|                 if (fgets(mediabuf,sizeof(mediabuf), fp)) {            /// fails with EIO
|                 ...
|                 }
|                 return 0                                               /// *media==NULL still holds




| static inline void selinux_setfilecon(char *file, unsigned int mode)
| ...
|                 int ret=selinux_get_media(file, mode, &media);
|                 if (ret == 0) {
|                         ret = matchmediacon(media, &scontext);        /// 'media' is NULL at this point

Comment 2 Harald Hoyer 2004-12-14 13:02:26 UTC

already have that patch ready :)

Comment 3 Harald Hoyer 2004-12-14 15:42:49 UTC

does this fix the problem?
ftp://people.redhat.com/harald/udev-039-10.FC3.6.i386.rpm

Comment 4 Cary Howell 2004-12-14 17:16:27 UTC

This patch (udev-039-10.FC3.6.i386.rpm) fixed the problem for me.  I
was experiencing the same issues Enrico had on an Intel ICH6
controller.  The actual model number is Intel 8201FR SATA AHCI Controller.

Comment 5 Enrico Scholz 2004-12-14 17:32:51 UTC

I will not see the machine before the weekend and can not provide
feedback now. So when you have a good feeling about the patch, please
push it out...