Messages in this thread | | | Subject | Re: PROBLEM: mmap_kmem() | From | Steven Rostedt <> | Date | Thu, 18 Aug 2005 08:34:09 -0400 |
| |
On Thu, 2005-08-18 at 11:53 +0300, Valentin Rabinovich wrote: > Bug in mmap_kmem(), drivers/char/mem.c. > When mapping the kmem, page alingning seems to mess the address: > > unsigned long long val; > val = (u64)vma->vm_pgoff << PAGE_SHIFT; > vma->vm_pgoff = ((unsigned long)val >> PAGE_SHIFT) - PAGE_OFFSET; > vma->vm_pgoff = __pa(val) >> PAGE_SHIFT; > > Subtracting 0xc0000000 and shifting is made in wrong order. > Kernel: 2.6.12.3, 2.6.12.4
This is already fixed in 2.6.13-rc6-git9, so you need to wait for it in the 2.6.13 release, or better yet, download and test the git release.
-- Steve
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |