On Fri, Nov 14, 2008 at 12:24:19PM +0000, Alessandro Bono wrote:
> Hi all
> second time I hit this bug, first time with 188.8.131.52 (reported to xfs ml
> without response)
> Condition are similar: rsync from remote server via ssh to a local usb hd
> with a xfs filesystem but connection this time is with a wired ethernet
> not wifi
> Tell me if you need other info
> kernel BUG at fs/buffer.c:471!
In 184.108.40.206 line 471 in fs/buffer.c is inside write and looks like this:
first = page_buffers(page)
and page_buffers is defined as:
#define page_buffers(page) \
((struct buffer_head *)page_private(page)); \
So we get a page without page_private set.
Now XFS always creates buffers in writepage when it doesn't have those
yet using the VFS helper create_empty_buffers which calls
attach_page_buffers, which sets the page private flag.
Given that the binary 3d driver always caused random VM problems can you
try to reproduce it with one loaded?