From ab686ad475f8fc9c70cece2888819a6d09cb5883 Mon Sep 17 00:00:00 2001 From: jchandra Date: Mon, 17 Oct 2011 05:42:53 +0000 Subject: Fix for crash on MIPS /dev/mem read. Reading /dev/mem in 64 bit kernel crashes. This is because the page used to call uiomove_fromphys() from memrw() does not have md.pv_list initialized correctly. The fix is to call pmap_page_init() on the page to initialize it. --- sys/mips/mips/mem.c | 1 + 1 file changed, 1 insertion(+) (limited to 'sys/mips') diff --git a/sys/mips/mips/mem.c b/sys/mips/mips/mem.c index 7529a9e..d40c424 100644 --- a/sys/mips/mips/mem.c +++ b/sys/mips/mips/mem.c @@ -87,6 +87,7 @@ memrw(struct cdev *dev, struct uio *uio, int flags) GIANT_REQUIRED; + pmap_page_init(&m); while (uio->uio_resid > 0 && !error) { iov = uio->uio_iov; if (iov->iov_len == 0) { -- cgit v1.1