Here ya go Jonathan,<br><a href="http://patchwork.ozlabs.org/patch/34047/">http://patchwork.ozlabs.org/patch/34047/</a><br><a href="http://patchwork.ozlabs.org/patch/34113/">http://patchwork.ozlabs.org/patch/34113/</a><br>
<br>Both patches work for my situation, but I went with the second set as a final patch(34113).<br><br>
- Jake Magee<br><br><div class="gmail_quote">On Thu, Oct 22, 2009 at 3:57 PM, Jonathan Haws <span dir="ltr"><<a href="mailto:Jonathan.Haws@sdl.usu.edu">Jonathan.Haws@sdl.usu.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
All,<br>
<br>
I am using a 405EX CPU on a custom board. The layout and hardware is very similar to the AMCC Kilauea board. Here is the output of uname -a:<br>
<br>
Linux (none) 2.6.30.3-wolverine-dirty #3 PREEMPT Thu Sep 10 11:41:37 MDT 2009 ppc unknown<br>
<br>
I am getting the following BUG output when my program exits:<br>
<br>
BUG: Bad page map in process main pte:980005d7 pmd:0d840400<br>
addr:48000000 vm_flags:400844fb anon_vma:(null) mapping:cd8454f8 index:98000<br>
vma->vm_file->f_op->mmap: fpga_mmap+0x0/0x178 [fpgaDriver]<br>
Call Trace:<br>
[cd84dc40] [c0006f0c] show_stack+0x44/0x16c (unreliable)<br>
[cd84dc80] [c00ba314] print_bad_pte+0x140/0x1d0<br>
[cd84dcb0] [c00ba3ec] vm_normal_page+0x48/0x50<br>
[cd84dcc0] [c00bb2ec] unmap_vmas+0x214/0x614<br>
[cd84dd40] [c00bffe0] exit_mmap+0xd0/0x1b4<br>
[cd84dd70] [c0031e40] mmput+0x50/0x134<br>
[cd84dd80] [c0036470] exit_mm+0x114/0x13c<br>
[cd84ddb0] [c0037d80] do_exit+0xc0/0x68c<br>
[cd84de00] [c0038390] do_group_exit+0x44/0xd8<br>
[cd84de10] [c0044468] get_signal_to_deliver+0x1f8/0x430<br>
[cd84de70] [c0008224] do_signal+0x54/0x29c<br>
[cd84df40] [c0010d5c] do_user_signal+0x74/0xc4<br>
<br>
I have an FPGA on the PCIe bus that I am mapping BAR0 to user space with a call to mmap(). The mapping works just fine and I can access all the registers in the BAR without a problem. However, on exit this comes up.<br>
<br>
A Google search showed tons of people with similar problems in standard distributions (Ubuntu primarily), but no resolutions.<br>
<br>
Has anyone seen this crop up before and know what the issue is? I include any source code, if that is required.<br>
<br>
Thanks!<br>
<br>
Jonathan<br>
<br>
<br>
<br>
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</blockquote></div><br>