Date: Thu, 08 Feb 2001 21:42:59 +0900 From: non@ever.sanda.gr.jp To: current@FreeBSD.ORG Cc: trevor@jpj.net, akiyama@FreeBSD.ORG Subject: Re: od driver for -CURRENT Message-ID: <20010208214259C.non@ever.sanda.gr.jp> In-Reply-To: <20010207171156.A72756@cicely5.cicely.de> References: <20010206133030.A2232@cicely5.cicely.de> <20010206232112W.non@ever.sanda.gr.jp> <20010207171156.A72756@cicely5.cicely.de>
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From: Bernd Walter <ticso@cicely5.cicely.de> Date: Wed, 7 Feb 2001 17:11:57 +0100 > On Tue, Feb 06, 2001 at 11:21:12PM +0900, non@ever.sanda.gr.jp wrote: > > Today I tried with 4.2-RELEASE (sorry not -current) and, > > 1. Boot up the 4.2-RELEASE with GENERIC kernel. > > 2. Connect MO drive with PC Card SCSI(ncv). > > 3. Insert PC Card without medium in the MO drive. > > 4. The pccardd automatically run camcontrol rescan. > > 5. Message says that da0 is 0MB capacity. > > 6. Run fdisk da0 > > 7. got panic with divided by zero. > > > > Probably divided by zero is caused at line 737 or 748 in the > > scsi_low_action() in cam/scsi/scsi_low.c because of ccg->block_size or > > secs_per_cylinder is zero. I tried with same drive and another SCSI card (ahc0) in 4.2-RELEASE. No problem were found. I watched the diffs between da.c and od.c. It seems like some fault in scsi_low.c. Hmm, my fault.... Sorry for claiming `da'. By the way, in Japanese users mailing list, some said that `da' does not check whether a medium is writerable or not (write protected). If you mount a write protected medium with -rw, it will lead bad condition when you do umount. > I never used fdisk on a removeable disk as I only needed them for FreeBSD. : > It looks like fdisk triggers the bug. I used fdisk just to check if there is a slice or not. Fdisk did not make problem. // Noriaki Mitsunaga // To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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