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From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.5) Gecko/20041111 Firefox/1.0 Description of problem: Simple: [root@Grissom ~]# modprobe acpi Segmentation Fault [root@Grissom ~]# dmesg -c ACPI-0292: *** Error: Looking up [_PPC] in namespace, AE_ALREADY_EXISTS ACPI-1133: *** Error: [NULL NAME], AE_ALREADY_EXISTS Unable to handle kernel NULL pointer dereference at virtual address 00000010 printing eip: c01dcf23 *pde = 12240001 Oops: 0000 [#1] SMP Modules linked in: acpi autofs4 microcode dm_mod button battery ac md5 ipv6 ohci1394 ieee1394 yenta_socket pcmcia_core ohci_hcd ehci_hcd snd_atiixp_modem snd_atiixp snd_ac97_codec snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd soundcore snd_page_alloc 8139too mii ext3 jbd CPU: 0 EIP: 0060:[<c01dcf23>] Not tainted VLI EFLAGS: 00010246 (2.6.9-1.715_FC3smp) EIP is at acpi_ps_parse_aml+0xb0/0x1a1 eax: 00000000 ebx: dbd1a400 ecx: c02f496e edx: c02f496e esi: dbd1a400 edi: dbe5e280 ebp: 00000007 esp: d40c0c38 ds: 007b es: 007b ss: 0068 Process modprobe (pid: 3415, threadinfo=d40c0000 task=c2bca6a0) Stack: dbf69ec0 00000000 dbd1a400 dbdac440 00000001 c01dbe89 c84db580 c84db580 c043a6f4 c043a6f4 c01dbea8 dbbb3880 c01d9ec9 dbbb3880 db1fac00 00000000 c01d3761 dbe38980 d40c0cd8 00000000 00000000 c84db580 db1fac00 00000000 Call Trace: [<c01dbe89>] acpi_ns_one_complete_parse+0x69/0x79 [<c01dbea8>] acpi_ns_parse_table+0xf/0x1f [<c01d9ec9>] acpi_ns_load_table+0x69/0x8d [<c01d3761>] acpi_ex_add_table+0x6d/0xa6 [<c01d3a90>] acpi_ex_load_op+0x1a7/0x1ef [<c01d861c>] acpi_ex_resolve_node_to_value+0xe4/0x100 [<c01d4367>] acpi_ex_resolve_to_value+0x37/0x40 [<c01d6522>] acpi_ex_resolve_operands+0x1c6/0x30c [<c01d57cd>] acpi_ex_opcode_1A_1T_0R+0x21/0x4f [<c01cf35e>] acpi_ds_exec_end_op+0xa5/0x25b [<c01dcbdb>] acpi_ps_parse_loop+0x523/0x7bb [<c01dcec0>] acpi_ps_parse_aml+0x4d/0x1a1 [<c01dd6ef>] acpi_psx_execute+0x13b/0x194 [<c01dabe2>] acpi_ns_execute_control_method+0x3b/0x47 [<c01dab90>] acpi_ns_evaluate_by_handle+0x6f/0x86 [<c01daa9d>] acpi_ns_evaluate_relative+0xa9/0xc3 [<c01da393>] acpi_evaluate_object+0xf3/0x1a0 [<c01e754d>] acpi_processor_set_pdc+0x72/0x78 [<c01e77d3>] acpi_processor_get_performance_info+0x29/0x68 [<c01e78a2>] acpi_processor_register_performance+0x8e/0xc7 [<dc9e73b7>] acpi_cpufreq_cpu_init+0x93/0x296 [acpi] [<c01427f7>] cache_alloc_refill+0x156/0x19d [<c0267882>] cpufreq_add_dev+0x10c/0x2b3 [<c0115955>] do_flush_tlb_all+0x0/0x59 [<c01039d2>] send_IPI_allbutself+0x12/0x24 [<c0115abf>] smp_call_function+0xda/0xe4 [<c0115955>] do_flush_tlb_all+0x0/0x59 [<c014db3c>] unmap_area_pmd+0x4e/0x59 [<c0135bab>] load_module+0x978/0x9fa [<c0149cea>] vma_link+0x44/0xbc [<dc982000>] acpi_cpufreq_init+0x0/0xa [acpi] [<c0212d5b>] sysdev_driver_register+0x7c/0xc0 [<c026836c>] cpufreq_register_driver+0x75/0xda [<c0135d43>] sys_init_module+0x116/0x238 [<c02c69df>] syscall_call+0x7/0xb Code: 00 ba 6d 04 00 00 6a 00 b8 3a 3a 2e c0 ff b3 b4 01 00 00 68 86 4e 2e c0 e8 52 de ff ff 83 c4 10 83 fd 07 75 1a 8b 83 b0 01 00 00 <83> 78 10 00 75 0e 80 48 09 08 8b 83 b0 01 00 00 c6 40 1c 01 8b Version-Release number of selected component (if applicable): 2.6.9-1.715_FC3smp How reproducible: Always Steps to Reproduce: 1.modprobe acpi 2. 3. Actual Results: nothing Expected Results: acpi module loaded Additional info: the dmesg part is up
What platform is this? This looks very similar to: http://bugme.osdl.org/show_bug.cgi?id=3147 The bug in 3147 above happens on some BIOSes when: 1) You try to load speedstep-centrino module first, which calls _PDC method. It fails beacuse BIOS doesn't support MSR based transition. 2) Then you try loading ACPI module, which does _PDC again and fails with an oops. And it was root caused to BIOS, which cannot handle multiple writes to _PDC. Can you check whether you have speedstep-centrino being tried before acpi. Try disabling speedstep-centrino in your config and check whether the failure goes away. That should say whether this BUG is same as 3147 above.
An update has been released for Fedora Core 3 (kernel-2.6.12-1.1372_FC3) which may contain a fix for your problem. Please update to this new kernel, and report whether or not it fixes your problem. If you have updated to Fedora Core 4 since this bug was opened, and the problem still occurs with the latest updates for that release, please change the version field of this bug to 'fc4'. Thank you.
Please retest this bug on the latest errata kernel. (If running SMP, make sure you upgrade mkinitrd seperately _first_)