• Salyzyn, Mark's avatar
    [SCSI] aacraid: OS panic after Adapter panic (hardening). · b6ef70f3
    Salyzyn, Mark authored
    In experiments in the lab we managed to trigger an Adapter firmware
    panic (BlinkLED) coincidentally while several pass-through ioctl
    command from the management software were outstanding on a bug only
    present on a class of RAID Adapters that require a hardware reset
    rather than a commanded reset. The net result was an attempt to time
    out the management software command as if it came from the SCSI layer
    resulting in an OS panic.
    
    Adapters that use commanded reset, management commands are returned
    failed by the Adapter correctly. The adapter firmware panic that
    resulted in this condition was also resolved, and there were no
    adapters in the field with this specific firmware bug so we do not
    expect any field reports. This is a rare or unlikely corner condition,
    and no reports have ever been forwarded from the field.
    Signed-off-by: default avatarMark Salyzyn <aacraid@adaptec.com>
    Signed-off-by: default avatarJames Bottomley <James.Bottomley@HansenPartnership.com>
    b6ef70f3
commsup.c 48.2 KB