Re: [PATCH]: Fix old SCSI adapter crashes with CD-ROM (take 2)

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Tue, May 08 2007, Alan Cox wrote:
> The CD-ROM layer doesn't bounce requests for old ISA controllers (and
> nor should it). However they get injected into the SCSI layer via
> sr_ioctl which also doesn't bounce them and SCSI then passes the buffer
> along to a device with unchecked_isa_dma set which either panics or
> truncates the buffer to 24bits.
> 
> According to Jens the right long term fix is for the CD layer to route
> the requests differently but in the mean time this has been tested by a
> victim and verified to sort the problem out. For the other 99.9% of users
> it's a no-op and doesn't bounce data.
> 
> Signed-off-by: Alan Cox <alan@xxxxxxxxxx>

Signed-off-by: Jens Axboe <jens.axboe@xxxxxxxxxx>

Christoph passed me his patch to get rid of ->generic_packet() in the
cdrom layer, so the work is almost complete. This patch is fine as a
work-around until that gets merged, though.

-- 
Jens Axboe

-
To unsubscribe from this list: send the line "unsubscribe linux-scsi" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [SCSI Target Devel]     [Linux SCSI Target Infrastructure]     [Kernel Newbies]     [IDE]     [Security]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Linux ATA RAID]     [Linux IIO]     [Samba]     [Device Mapper]
  Powered by Linux