Re: Acpi deadlocks with 3.7.0-rc4

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On Wed, Nov 28, 2012 at 8:21 AM, Zdenek Kabelac <zkabelac@xxxxxxxxxx> wrote:
>
> I've opened  https://bugzilla.kernel.org/show_bug.cgi?id=51071
> and attached picture there which is all I have.
>
> I'll try to decode exact code line.

Uhhuh. It's missing much of the relevant parts of the code line, in
particular the actual oopsing instruction. But what is there decodes
to

        41 b8 10 00 00 00       mov    $0x10,%r8d
        48 c7 c1 88 52 64 81    mov    $0xffffffff81645288,%rcx
        31 c0                   xor    %eax,%eax
        48 c7 c2 98 52 64 81    mov    $0xffffffff81645298,%rdx
        bf 00 04 00 0.          mov    $0x0.00400,%edi

    .. oops in here ..

        74 33                   je     0x50
        48 89 df                mov    %rbx,%rdi
        e8 4d c9 00 00          callq  ? <offset 0xc972>
        48 89 d9                mov    %rbx,%rcx
        48 c7 c2 0a .. .. ..    mov    $0x......0a,%rdx

which isn't really very obvious. Do you have that kernel around (or at
least the same compiler and configuration)? Doing a

  objdump --disassemble  drivers/acpi/acpica/nsaccess.o

might help pinpoint where that is..

> It's probably not a regression from 3.6 - since this problem was there for
> much longer - but now it has just become much more visible.

Ok.

           Linus
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