It's sort of weird that this is an alignment issue. The config that was posted earlier was an x86_64 config and on that system then the pointers from kmalloc() should already be aligned correctly at sizeof(u64). Earlier I said I suspected the code is racy, so possibly changing from kmalloc() to get_zeroed_page() just changes the timing enough so we don't see the race condition. regards, dan carpenter _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel