> "num_pages" is usually just equal to 1. This code appears to work very well. > However, when I call the iounmap function on the memory obtained via > ioremap_nocache, sometimes I hit a kernel BUG(). The code which causes the bug > is in page_alloc.c, line 85 (in function __free_pages_ok): > > if (page->buffers) > BUG(); This sounds like you are trying to do maps on pages that are in use. No can do - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/