[lkml]   [2012]   [Nov]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: Acpi deadlocks with 3.7.0-rc4
On Wed, Nov 28, 2012 at 9:27 AM, Zdenek Kabelac <> wrote:
> I've attached bigger disasfun script output to BZ 51071.
> if (ACPI_GET_DESCRIPTOR_TYPE(prefix_node) !=
> 00000000000000a1 <acpi_ns_lookup+0xa1> cmpb $0xf,0x8(%rbx)
> 00000000000000a5 <acpi_ns_lookup+0xa5> je 0da <acpi_ns_lookup+0xda>
> seems to be going out of bounds.

The whole "prefix_node" pointer is bogus. It seems to have the value 0x1000.

I wonder how that happened. It's loaded from 'scope_info->scope.node',
and it *should* be a valid pointer.

Can you add a print-out of


and check that it is ACPI_DESC_TYPE_STATE_WSCOPE (== 8). If it is not,
return early.

Or just something like the attatched, which just uses the root node
(and warns once) if it's not a valid WSCOPE thing.

[unhandled content-type:application/octet-stream]
 \ /
  Last update: 2012-11-28 20:41    [W:0.132 / U:5.796 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site