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    SubjectRe: acpi_ex_system_memory_space_handler oops
    On (08/27/09 16:44), Lin Ming wrote:
    > On Thu, 2009-08-27 at 16:29 +0800, Sergey Senozhatsky wrote:
    > > On (08/27/09 15:59), Lin Ming wrote:
    > > > > rc7-git5 (patched)
    > > > >
    > > > > [ 0.178628] ACPI: EC: Look up EC in DSDT
    > > > > [ 0.196480] ACPI: Interpreter enabled
    > > > > [ 0.196575] ACPI: (supports S0 S1 S3 S4 S5)
    > > > > [ 0.197184] ACPI: Using IOAPIC for interrupt routing
    > > > > [ 0.197352] PCI: MCFG configuration 0: base e0000000 segment 0 buses 0 - 255
    > > > > [ 0.203511] ACPI Error (dswload-0790): [PCFG] Namespace lookup failure, AE_ALREADY_EXISTS
    > > > > [ 0.203738] ACPI Exception: AE_ALREADY_EXISTS, During name lookup/catalog 20090521 psloop-227
    > > > > [ 0.203964] ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.RBPE] (Node f7017678), AE_ALREADY_EXISTS
    > > > > [ 0.204256] ACPI: Marking method RBPE as Serialized because of AE_ALREADY_EXISTS error
    > > > > [ 0.204510] ACPI Error (psparse-0537): Method parse/execution failed [\_GPE._L01] (Node f701d198), AE_ALREADY_EXISTS
    > > > > [ 0.204803] ACPI: Marking method _L01 as Serialized because of AE_ALREADY_EXISTS error
    > > > > [ 0.205063] ACPI Exception: AE_ALREADY_EXISTS, while evaluating GPE method [_L01] 20090521 evgpe-568
    > > >
    >
    > So the patch only fixes the oops,
    > we also need to fix the AE_ALREADY_EXISTS error.
    >
    > AE_ALREADY_EXISTS fix not confirmed.
    I'm afraid there was my mistake. No luck in reproducing this with patched kernel.

    I've updated BIOS (305 -> 307, ASUS F3Jc) - unpatched kernel (rc8, rc7) oopses.

    Made some changes to acpi_ex_system_memory_space_handler:

    static int prev_ebx = 0;
    struct pt_regs *regs = task_pt_regs(current);
    [..]
    if (prev_ebx != regs->bx) {
    printk("EAX: %08lx EBX: %08lx ECX: %08lx EDX: %08lx\n",
    regs->ax, regs->bx, regs->cx, regs->dx);
    prev_ebx = regs->bx;
    }

    Kernel oopses at acpi_ex_system_memory_space_handler+0x75, which is
    mov 0x8(%ebx),%edx /* 0x8(%ebx) == mem_info->mapped_physical_address */

    2 normal boots:
    [ 0.179720] EAX: 00000002 EBX: c1603684 ECX: c15adae0 EDX: 00000002
    [ 0.203556] EAX: f7231fc8 EBX: f7231fe0 ECX: c1062064 EDX: 00000000
    [ 0.204522] EAX: 00000002 EBX: c1603684 ECX: c15adae0 EDX: 00000002
    [ 0.204727] EAX: f7231fc8 EBX: f7231fe0 ECX: c1062064 EDX: 00000000
    [ 0.205402] EAX: 00000002 EBX: c1603684 ECX: c15adae0 EDX: 00000002
    [ 0.207394] EAX: f7231fc8 EBX: f7231fe0 ECX: c1062064 EDX: 00000000
    [ 0.207742] EAX: 00000002 EBX: c1603684 ECX: c15adae0 EDX: 00000002
    [ 0.223926] EAX: 00000002 EBX: c160368c ECX: c15adae0 EDX: 00000002
    [ 0.313569] EAX: 00000002 EBX: c1603720 ECX: c15adae0 EDX: 00000002
    [ 0.538362] EAX: 00000002 EBX: c160395c ECX: c15adae0 EDX: 00000002
    [ 0.539345] EAX: 00000002 EBX: c1603960 ECX: c15adae0 EDX: 00000002
    [ 0.551478] EAX: 00000002 EBX: c1603968 ECX: c15adae0 EDX: 00000002
    [ 0.553474] EAX: 00000002 EBX: c160396c ECX: c15adae0 EDX: 00000002
    [ 0.559407] EAX: 00000002 EBX: c1603970 ECX: c15adae0 EDX: 00000002
    [ 0.562432] EAX: 00000002 EBX: c1603974 ECX: c15adae0 EDX: 00000002
    [ 0.567686] EAX: f68fffc8 EBX: f68fffe0 ECX: c1062064 EDX: 00000000
    [ 0.929685] EAX: 00000002 EBX: c160399c ECX: c15adae0 EDX: 00000002
    [ 0.943102] EAX: f68fffc8 EBX: f68fffe0 ECX: c1062064 EDX: 00000000
    [ 1.119718] EAX: f707bfc8 EBX: f707bfe0 ECX: c1062064 EDX: 00000000
    [ 4.247438] EAX: 00000004 EBX: 00000003 ECX: 08061916 EDX: 00000003
    [ 4.624659] EAX: 00000080 EBX: b7fe3000 ECX: 00007111 EDX: 08d26e88
    [ 9.422412] EAX: 00000003 EBX: 00000003 ECX: b7f4e000 EDX: 00001000
    [ 15.780002] EAX: 00000003 EBX: 00000007 ECX: b803a000 EDX: 00001000
    [ 30.282635] EAX: 00000003 EBX: 00000004 ECX: b7313000 EDX: 00001000
    [ 31.760373] EAX: 00000003 EBX: 00000005 ECX: b8081000 EDX: 00001000
    [ 46.478595] EAX: 00000003 EBX: 00000011 ECX: b8085000 EDX: 00001000
    [ 60.287018] EAX: 00000003 EBX: 00000004 ECX: b7313000 EDX: 00001000
    [ 76.503652] EAX: 00000003 EBX: 00000011 ECX: b8085000 EDX: 00001000
    [ 95.286847] EAX: 00000003 EBX: 00000004 ECX: b7313000 EDX: 00001000
    [ 103.537367] EAX: 00000003 EBX: 00000005 ECX: b8081000 EDX: 00001000
    [ 106.503656] EAX: 00000003 EBX: 00000011 ECX: b8085000 EDX: 00001000

    ***
    [ 0.177114] EAX: 00000002 EBX: c1603684 ECX: c15adae0 EDX: 00000002
    [ 0.200169] EAX: f7213fc8 EBX: f7213fe0 ECX: c1062064 EDX: 00000000
    [ 0.200854] EAX: 00000002 EBX: c1603684 ECX: c15adae0 EDX: 00000002
    [ 0.200998] EAX: f7213fc8 EBX: f7213fe0 ECX: c1062064 EDX: 00000000
    [ 0.201331] EAX: 00000002 EBX: c1603684 ECX: c15adae0 EDX: 00000002
    [ 0.202367] EAX: f7213fc8 EBX: f7213fe0 ECX: c1062064 EDX: 00000000
    [ 0.202569] EAX: 00000002 EBX: c1603684 ECX: c15adae0 EDX: 00000002
    [ 0.204209] EAX: f7213fc8 EBX: f7213fe0 ECX: c1062064 EDX: 00000000
    [ 0.204452] EAX: 00000002 EBX: c1603684 ECX: c15adae0 EDX: 00000002
    [ 0.206921] EAX: f7213fc8 EBX: f7213fe0 ECX: c1062064 EDX: 00000000
    [ 0.207834] EAX: 00000002 EBX: c1603684 ECX: c15adae0 EDX: 00000002
    [ 0.220475] EAX: 00000002 EBX: c160368c ECX: c15adae0 EDX: 00000002
    [ 0.319953] EAX: 00000002 EBX: c1603720 ECX: c15adae0 EDX: 00000002
    [ 0.540786] EAX: 00000002 EBX: c160395c ECX: c15adae0 EDX: 00000002
    [ 0.541769] EAX: 00000002 EBX: c1603960 ECX: c15adae0 EDX: 00000002
    [ 0.550439] EAX: 00000002 EBX: c1603968 ECX: c15adae0 EDX: 00000002
    [ 0.552394] EAX: 00000002 EBX: c160396c ECX: c15adae0 EDX: 00000002
    [ 0.560133] EAX: 00000002 EBX: c1603970 ECX: c15adae0 EDX: 00000002
    [ 0.563108] EAX: 00000002 EBX: c1603974 ECX: c15adae0 EDX: 00000002
    [ 0.568408] EAX: f697bfc8 EBX: f697bfe0 ECX: c1062064 EDX: 00000000
    [ 0.926336] EAX: f707ffc8 EBX: f707ffe0 ECX: c1062064 EDX: 00000000
    [ 0.932752] EAX: 00000002 EBX: c160399c ECX: c15adae0 EDX: 00000002
    [ 0.932974] EAX: f697bfc8 EBX: f697bfe0 ECX: c1062064 EDX: 00000000
    [ 4.094675] EAX: 00000004 EBX: 00000003 ECX: 08061916 EDX: 00000003
    [ 4.604710] EAX: 00000080 EBX: b80c2000 ECX: 00007111 EDX: 08cdae88
    [ 9.325215] EAX: 00000003 EBX: 00000003 ECX: b7f30000 EDX: 00001000
    [ 15.744843] EAX: 00000003 EBX: 00000007 ECX: b8003000 EDX: 00001000
    [ 30.818662] EAX: 00000003 EBX: 00000004 ECX: b7490000 EDX: 00001000
    [ 38.545531] EAX: 00000003 EBX: 00000005 ECX: b7edb000 EDX: 00001000


    I also have changed show_registers(struct pt_regs *regs) to __show_regs(regs, 0); after the stack trace.
    Here are 2 oopses (they are similar):
    Kacpid not tainted
    EIP: 0060: [<c12a30ce>] EFLAGS: 00010246 CPU: 0
    EIP is at acpi_ex_system_memory_space_handler+0x75/0x22f
    EAX: 00000001 EBX: 00000020 ECX: 00000008 EDX: 00000000
    ESI: f7213dec EDI: 0000008 EBP: f7213d10 ESP: f7213cdc
    DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068

    ***
    EAX: 00000001 EBX: 00000020 ECX: 00000008 EDX: 00000000
    ESI: f7213dec EDI: 0000008 EBP: f7213d10 ESP: f7213cdc
    DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068


    Note EBX: 00000020 in both cases.
    (happend around 0.21 min when 'usually' EBX: c1603684/f7213fe0).


    Sergey[unhandled content-type:application/pgp-signature]
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