Date: Sat, 26 Mar 2005 17:18:50 +0100 (CET) From: Mikolaj Rydzewski <miki@ceti.pl> To: FreeBSD-gnats-submit@FreeBSD.org Subject: kern/79255: Fixating CDRW with burncd(8) hangs system (DVDR NEC ND-6450A on Compaq NX9020) Message-ID: <200503261618.j2QGIopa001213@hp.dom> Resent-Message-ID: <200503261620.j2QGK31D094356@freefall.freebsd.org>
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>Number: 79255 >Category: kern >Synopsis: Fixating CDRW with burncd(8) hangs system (DVDR NEC ND-6450A on Compaq NX9020) >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Sat Mar 26 16:20:02 GMT 2005 >Closed-Date: >Last-Modified: >Originator: Mikolaj Rydzewski <miki@ceti.pl> >Release: FreeBSD 5.3-RELEASE-p5 i386 >Organization: >Environment: System: FreeBSD hp.dom 5.3-RELEASE-p5 FreeBSD 5.3-RELEASE-p5 #0: Fri Mar 25 08:58:34 CET 2005 root@hp.dom:/usr/src/sys/i386/compile/NX9020 i386 HP-Compaq NX9020 notebook, DVD recorder, info from dmesg: acd0: DVDR <NEC DVD+/-RW ND-6450A/2.36> at ata1-master PIO4 >Description: System hangs while fixating CDRW. I have modified burncd(8) to know when it happens exactly. It hangs on ioctl(fd, CDRIOCFIXATE, &multi) call. It DOES NOT hang when fixating with cdrecord (with camcontrol interface) however. Kernel message while hanging: kernel trap 12 with interrupts disabled Fatal trap 12: page fault while in kernel mode fault virtual address: 0x10068 fault code: supervisor read, page not present instruction pointer: 0x8:0xc062e439 stack pointer: 0x10:0xd41f4c68 frame pointer: 0x10:0xd41f4c6c code segment: base 0x0, limit 0xfffff, type: 0x1b dpl 0, pres 1, def32 1, gran 1 processor eflags: resume, IOPL=0 current process: 6 (thread taskq) trap number: 12 panic: page fault >How-To-Repeat: burncd -s max blank fixate >Fix: Use cdrecord instead of burncd. But cdrecord has got limitations with writing DVDs. And I like burncd more ;-) >Release-Note: >Audit-Trail: >Unformatted:
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