Bug 167437

Summary: isoinfo without args crashes at the end if run without -i filename
Product: [Fedora] Fedora Reporter: Alexandre Oliva <oliva>
Component: cdrtoolsAssignee: Harald Hoyer <harald>
Status: CLOSED RAWHIDE QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: rawhide   
Target Milestone: ---   
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Hardware: x86_64   
OS: Linux   
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Fixed In Version: Doc Type: Bug Fix
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Last Closed: 2005-10-28 17:55:31 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Flags
strace output, as requested none

Description Alexandre Oliva 2005-09-02 16:34:29 UTC 
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.8b3) Gecko/20050827 Fedora/1.1-0.2.8.deerpark.alpha2 Firefox/1.0+

Description of problem:
If there's a CD or DVD inserted in the CD/DVD drive corresponding to /dev/cdrom, isoinfo will crash if started without arguments, but not if started as isoinfo -i /dev/cdrom.  If there isn't any media in the drive, both cases will exist normally after printing the appropriate errors.

If given additional arguments (say -R, -l, -f), it will display the requested information before crashing.

In fact, it will crash on fclose, so it's quite likely just some uninitialized (or corrupted) FILE*.

Version-Release number of selected component (if applicable):
mkisofs-2.01.1-10

How reproducible:
Always

Steps to Reproduce:
1.Insert some media containing a filesystem in a CD or DVD drive associated with /dev/cdrom
2.Run isoinfo

Actual Results:  It crashes

Expected Results:  It shouldn't crash

Additional info:

So far I've only tried this on x86_64, but this might very well be architecture-independent.
Comment 1 Alexandre Oliva 2005-09-02 16:35:59 UTC 
Oops, filed against wrong component, sorry.
Comment 2 Harald Hoyer 2005-09-05 06:22:44 UTC 
please do a:
# strace -f isoinfo

and attach the output.
Comment 3 Alexandre Oliva 2005-09-05 12:25:00 UTC 
Created attachment 118467 [details]
strace output, as requested

I very much doubt this is going to add any info over what I've already posted,
but here it goes...  FWIW, here's the crash as reported by GDB:

Program received signal SIGSEGV, Segmentation fault.
0x000000377a35c1ab in fclose@@GLIBC_2.2.5 () from /lib64/libc.so.6

The crash occurs at the instruction that first reads from the first argument,
that was (incorrectly) passed as NULL.
Comment 4 Alexandre Oliva 2005-10-28 14:08:29 UTC 
Bug still present in today's rawhide (mkisofs-2.01.1-10).