Date: Sat, 2 May 1998 18:09:21 +0200 From: "Julian H. Stacey" <jhs@FreeBSD.ORG> To: current@FreeBSD.ORG Cc: jkh@FreeBSD.ORG Subject: 2.2.5 cd driver _iso_iget crashes on 2.2.6 cd #2 ./dev Message-ID: <199805021609.SAA13837@jhs.muc.de>
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I can reliably get a variety of my 2.2.5 release systems to crash building an index of directories on the 2nd of the 4 disc 2.2.6 cd-rom set. (Discs 1,3,& 4 are OK though) This with hosts with mitsumi & scsi cdroms, with diferent controllers & cpus, but all running 2.2.5. On one I noted: ddb kernel type 12 trap, code=0, Stopped at _iso_iget+0x312: movl %eax,0x8(%ebx) Crash with: mount /cdrom; cd /cdrom/dev; ls -la (first noticed with: mount /cdrom; cd /cdrom; find . -type d -print) I've seen crashes before indexing other non FreeBSD CDs ... so a suggestion for kernel programmers, if I may: The kernel could be less trusting of insertable media foreign file systems (eg 9660), as all sorts of half baked utils on random operating systems can create supposedly more-or-maybe-less compliant iso-9600 filesystems, that may get written to cd, & mounted on FreeBSD. I had a look at man mkisofs (from 2.2.5) but saw no fsck type functionality. If there was such functionality somewhere, it could be tempting to port it, & run it before mounting new CDs (but man mkisofs, suggests lots of non standard variants it'd have to check for, & I'm not volunteering to write a fsck_9660 from scratch :-). Julian Julian H. Stacey <jhs@freebsd.org> http://www.freebsd.org/~jhs/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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