Bug 141093

Summary:	segfault in mkisofs
Product:	Red Hat Enterprise Linux 4	Reporter:	John Summerfield <debian>
Component:	cdrtools	Assignee:	Harald Hoyer <harald>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	4.0	CC:	jturner
Target Milestone:	---
Target Release:	---
Hardware:	i386
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2004-12-07 17:15:51 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 John Summerfield 2004-11-29 07:44:53 UTC

Description of problem:
segfault and NULL pointer messages from mkisofs

Version-Release number of selected component (if applicable):
2.01.0.a38

How reproducible:
allways

Steps to Reproduce:
1.rm -rf /tmp/Isolinux
2.cp -vfpr /var/local/mirrors/linux/RHEL/3.95/i386/os/isolinux /tmp/
3.mv -f /tmp/isolinux /tmp/Isolinux
4.mkisofs -o EL395-dvd.iso -A 'EL/3.95 i386' -V 'EL/3.95 i386' -J -R
-T -q -x ./lost+found -no-emul-boot -boot-load-size 4 -boot-info-table
-x isolinux /tmp/Isolinux /var/local/mirrors/linux/RHEL/3.95/i386/os

  
Actual results:
/home/summer/bin/RHEL-DVD: line 20: 18249 Segmentation fault     
mkisofs -o EL395-dvd.iso -A "EL/3.95 i386" -V "EL/3.95 i386" -J -R -T
-q -x ./lost+found -no-emul-boot -boot-load-size 4 -boot-info-table -x
isolinux /tmp/Isolinux /var/local/mirrors/linux/RHEL/3.95/i386/os


Expected results:
And iso at EL395-dvd.iso

Additional info:
Probably this is related:
+ mv -f /tmp/isolinux /tmp/Isolinux
+ mkisofs -o EL395-dvd.iso -b Isolinux/isolinux.bin -A 'EL/3.95 i386'
-V 'EL/3.95 i386' -J -R -T -q -x ./lost+found -c Isolinux/boot.cat
-no-emul-boot -boot-load-size 4 -boot-info-table -x isolinux
/tmp/Isolinux /var/local/mirrors/linux/RHEL/3.95/i386/os
Unknown file type (unallocated) /tmp/Isolinux/.. - ignoring and
continuing.
mkisofs: Uh oh, I cant find the boot catalog directory 'Isolinux'!

The primary source is an unpacked Nahant AS CD set.

Comment 1 Jay Turner 2004-11-29 09:04:39 UTC

Will have to poke into why mkisofs is falling over, but your second example
above isn't correct mkisofs syntax in the first place, hence the error message.
 Both the boot catalog and the boot image need to be specified relative to the
source paths listed on the command line, so the command above is telling mkisofs
to look for "Isolinux/isolinux.bin" and "Isolinux/boot.cat" in the
"/tmp/Isolinux" and "/var/local/mirrors/linux/RHEL/3.95/i386/os" directories,
where, of course, it doesn't exist.  Running the following command does indeed
work, however:

mkisofs -o EL395-dvd.iso -b isolinux.bin -A 'EL/3.95 i386' -V 'EL/3.95 i386' -J
-R -T -q -x ./lost+found -c boot.cat -no-emul-boot -boot-load-size 4
-boot-info-table -x ./isolinux /tmp/Isolinux
/var/local/mirrors/linux/RHEL/3.95/i386/os

Comment 2 Jay Turner 2004-11-29 09:05:11 UTC

Fix summary typo.

Comment 3 John Summerfield 2004-11-29 14:36:47 UTC

I since have create a working commandline. I'venot yet established
that it does what I want though.

I suggest that mkisofs should be properly validating parameter info
including checking for consistency and that it's not doing this. This
would likely give rise to erroneous messages and segfaults, and quite
possibly in some contexts, security exposures.

I know my commandline was wrong, but that doesn't make messages about
null pointers (whoops I didn't actually show that one) permissable.

Luckily I still have one:
+ mkisofs -o EL394-dvd.iso -b isolinux/isolinux.bin -A 'EL/3.94 i386'
-V 'EL/3.9
4 i386' -J -R -T -q -x ./lost+found -c isolinux/boot.cat -no-emul-boot
-boot-loa
d-size 4 -boot-info-table /tmp/isolinux
/var/local/mirrors/linux/RHEL/3.95/i386/
os
Unknown file type (unallocated) /tmp/isolinux/.. - ignoring and
continuing.
mkisofs: Error: (NULL POINTER) and
/var/local/mirrors/linux/RHEL/3.95/i386/os/is
olinux/boot.cat have the same Joliet name