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    SubjectRe: Linus 2.6.23-rc1: ACPI-related oops on x86_64
    On (22/07/07 14:04), Linus Torvalds didst pronounce:
    > Ok, right on time, two weeks afetr 2.6.22, there's a 2.6.23-rc1 out there.

    This was seen on a machine on;

    Unable to handle kernel NULL pointer dereference at 0000000000000000
    [<ffffffff8037379b>] acpi_processor_throttling_seq_show+0xa7/0xd6
    PGD 3bd9e067 PUD 3bc6a067 PMD 0
    Oops: 0000 [1] SMP
    CPU 3
    Modules linked in: video output button battery floppy ac lp parport_pc
    parport nvram amd_rng rng_core i2c_amd756 i2c_core
    Pid: 1522, comm: head Not tainted 2.6.23-rc1-autokern1 #1
    RIP: 0010:[<ffffffff8037379b>] [<ffffffff8037379b>]
    RSP: 0018:ffff81003c4a5e48 EFLAGS: 00010246
    RAX: 0000000000000020 RBX: ffff810037ea1800 RCX: 0000000000000000
    RDX: 000000000000002a RSI: ffffffff80599c02 RDI: ffff810037c6a9c0
    RBP: ffff810037c6a9c0 R08: ffff81003c3e3051 R09: ffff810037c6a9c0
    R10: ffffffffffffffff R11: ffffffff80373e66 R12: 0000000000000000
    R13: 0000000000000000 R14: 0000000000000000 R15: 00007fffd59dcd40
    FS: 00002b7ad50e36f0(0000) GS:ffff81003ee56b40(0000) knlGS:0000000000000000
    CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
    CR2: 0000000000000000 CR3: 000000003bd9b000 CR4: 00000000000006e0
    DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
    DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
    Process head (pid: 1522, threadinfo ffff81003c4a4000, task ffff81003ee81040)
    Stack: ffff81003eed7180 ffff810037c6a9c0 0000000000000001 0000000000000001
    0000000000002000 ffffffff802a77b3 ffff81003c4a5f50 ffff81003e2f8ec0
    ffff810037c6a9f0 ffff81003de65000 0000000000000000 fffffffffffffffb
    Call Trace:
    [<ffffffff802a77b3>] seq_read+0x105/0x28e
    [<ffffffff802a76ae>] seq_read+0x0/0x28e
    [<ffffffff802c8501>] proc_reg_read+0x80/0x9a
    [<ffffffff8028eb3d>] vfs_read+0xcb/0x153
    [<ffffffff8028eed9>] sys_read+0x45/0x6e
    [<ffffffff8020bc6e>] system_call+0x7e/0x83
    FATAL: Error inserting acpi_cpufreq
    No such device

    Full oops is at
    Config file at

    People are added to the CC that git shows were in this general area
    recently in case they have the quick answer.

    Mel Gorman
    Part-time Phd Student Linux Technology Center
    University of Limerick IBM Dublin Software Lab
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      Last update: 2007-07-23 11:55    [W:0.046 / U:59.072 seconds]
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