Never seen this before. drivers/scsi/ips.c: In function `ips_scmd_buf_write': drivers/scsi/ips.c:3665: warning: null argument where non-null required (arg 1) drivers/scsi/ips.c: In function `ips_scmd_buf_read': drivers/scsi/ips.c:3697: warning: null argument where non-null required (arg 2) drivers/scsi/ips.c: In function `ips_register_scsi': Due to memcpy(IPS_SG_ADDRESS(&sg[i]), &cdata[xfer_cnt], min_cnt); I guess the compiler is saying that if IPS_SG_ADDRESS indeed evaluates to NULL (as it is designed to do), we have an oops. That's an x86_64 allmodconfig build, btw. - : 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