CentOS release 5 (Final) Kernel 2.6.18-8.el5 on an i686 localhost.localdomain login: CentOS release 5 (Final) Kernel 2.6.18-8.el5 on an i686 localhost.localdomain login: BUG: unable to handle kernel NULL pointer dereference at virtual address 0000007f printing eip: f8ab0808 *pde = 77e6e067 Oops: 0000 [#1] SMP last sysfs file: /module/libata/version Modules linked in: autofs4 hidp xpp_usb(U) xpp(U) wctc4xxp(U) dahdi_transcode(U) wcb4xxp(U) wctdm(U) wcfxo(U) wctdm24xxp(U) wcte11xp(U) wct1xxp(U) wcte12xp(U) wct4xxp(U) dahdi(U) crc_ccitt rfcomm l2cap bluetooth sunrpc ipv6 video sbs i2c_ec button battery asus_acpi ac parport_pc lp parport sg ide_cd cdrom i2c_i801 i2c_core tg3 serio_raw pcspkr dm_snapshot dm_zero dm_mirror dm_mod ata_piix libata sd_mod scsi_mod ext3 jbd ehci_hcd ohci_hcd uhci_hcd CPU: 1 EIP: 0060:[] Not tainted VLI EFLAGS: 00010002 (2.6.18-8.el5 #1) EIP is at __dahdi_receive_chunk+0x12b/0x1404 [dahdi] eax: 0000007f ebx: f605a000 ecx: 00000000 edx: c0738dc8 esi: f605a000 edi: f605a000 ebp: 00000060 esp: c0738d2c ds: 007b es: 007b ss: 0068 Process swapper (pid: 0, ti=c0738000 task=f7d85550 task.ti=f7d89000) Stack: c0738d94 00000092 c0738dc8 f605a000 00000000 00000000 f605a000 c0738d6c f6f61b80 00000000 00000000 f6024b40 00000000 00000000 f6f683e0 00000008 fef8f90c fedc00fc 09580d44 096c07e0 083402c8 04f808b8 09c810e0 05d0067c Call Trace: [] dahdi_receive+0x65e/0x762 [dahdi] [] t4_prep_gen2+0x118/0x147 [wct4xxp] [] t4_interrupt_gen2+0x246/0x6dd0 [wct4xxp] [] __next_cpu+0x12/0x21 [] find_busiest_group+0x177/0x462 [] do_timer+0x793/0x8a9 [] __next_cpu+0x12/0x21 [] enqueue_task+0x29/0x39 [] __activate_task+0x1c/0x29 [] try_to_wake_up+0x371/0x37b [] ata_output_data+0x5e/0x64 [] lock_timer_base+0x15/0x2f [] del_timer+0x41/0x47 [] ata_scsi_qc_complete+0x96/0xa1 [libata] [] __ata_qc_complete+0x1bf/0x1c6 [libata] [] ata_hsm_qc_complete+0x16a/0x175 [libata] [] ata_hsm_move+0x6a0/0x6b6 [libata] [] ide_end_request+0xc7/0xcf [] cdrom_pc_intr+0xb0/0x1ec [ide_cd] [] lock_timer_base+0x15/0x2f [] handle_IRQ_event+0x23/0x49 [] __do_IRQ+0x93/0xe8 [] do_IRQ+0x93/0xae [] common_interrupt+0x1a/0x20 [] mwait_idle+0x25/0x38 [] cpu_idle+0x9f/0xb9 ======================= Code: a0 08 00 00 b9 07 00 00 00 8b 54 24 08 8a 00 89 d7 47 88 02 f3 aa 31 c9 8b 54 24 08 8b 5c 24 18 01 ca 0f b6 02 03 83 a4 00 00 00 <8a> 00 88 02 0f b6 c0 01 c0 03 83 9c 08 00 00 66 8b 00 66 89 44 EIP: [] __dahdi_receive_chunk+0x12b/0x1404 [dahdi] SS:ESP 0068:c0738d2c <0>Kernel panic - not syncing: Fatal exception in interrupt BUG: warning at arch/i386/kernel/smp.c:550/smp_call_function() (Not tainted) [] stop_this_cpu+0x0/0x33 [] smp_call_function+0x57/0xc3 [] printk+0x18/0x8e [] smp_send_stop+0x13/0x1c [] panic+0x4c/0x171 [] die+0x262/0x296 [] do_page_fault+0x3ea/0x4b8 [] do_page_fault+0x0/0x4b8 [] error_code+0x39/0x40 [] __dahdi_receive_chunk+0x12b/0x1404 [dahdi] [] dahdi_receive+0x65e/0x762 [dahdi] [] t4_prep_gen2+0x118/0x147 [wct4xxp] [] t4_interrupt_gen2+0x246/0x6dd0 [wct4xxp] [] __next_cpu+0x12/0x21 [] find_busiest_group+0x177/0x462 [] do_timer+0x793/0x8a9 [] __next_cpu+0x12/0x21 [] enqueue_task+0x29/0x39 [] __activate_task+0x1c/0x29 [] try_to_wake_up+0x371/0x37b [] ata_output_data+0x5e/0x64 [] lock_timer_base+0x15/0x2f [] del_timer+0x41/0x47 [] ata_scsi_qc_complete+0x96/0xa1 [libata] [] __ata_qc_complete+0x1bf/0x1c6 [libata] [] ata_hsm_qc_complete+0x16a/0x175 [libata] [] ata_hsm_move+0x6a0/0x6b6 [libata] [] ide_end_request+0xc7/0xcf [] cdrom_pc_intr+0xb0/0x1ec [ide_cd] [] lock_timer_base+0x15/0x2f [] handle_IRQ_event+0x23/0x49 [] __do_IRQ+0x93/0xe8 [] do_IRQ+0x93/0xae [] common_interrupt+0x1a/0x20 [] mwait_idle+0x25/0x38 [] cpu_idle+0x9f/0xb9 ======================= BUG: warning at kernel/panic.c:137/panic() (Not tainted) [] panic+0x15c/0x171 [] die+0x262/0x296 [] do_page_fault+0x3ea/0x4b8 [] do_page_fault+0x0/0x4b8 [] error_code+0x39/0x40 [] __dahdi_receive_chunk+0x12b/0x1404 [dahdi] [] dahdi_receive+0x65e/0x762 [dahdi] [] t4_prep_gen2+0x118/0x147 [wct4xxp] [] t4_interrupt_gen2+0x246/0x6dd0 [wct4xxp] [] __next_cpu+0x12/0x21 [] find_busiest_group+0x177/0x462 [] do_timer+0x793/0x8a9 [] __next_cpu+0x12/0x21 [] enqueue_task+0x29/0x39 [] __activate_task+0x1c/0x29 [] try_to_wake_up+0x371/0x37b [] ata_output_data+0x5e/0x64 [] lock_timer_base+0x15/0x2f [] del_timer+0x41/0x47 [] ata_scsi_qc_complete+0x96/0xa1 [libata] [] __ata_qc_complete+0x1bf/0x1c6 [libata] [] ata_hsm_qc_complete+0x16a/0x175 [libata] [] ata_hsm_move+0x6a0/0x6b6 [libata] [] ide_end_request+0xc7/0xcf [] cdrom_pc_intr+0xb0/0x1ec [ide_cd] [] lock_timer_base+0x15/0x2f [] handle_IRQ_event+0x23/0x49 [] __do_IRQ+0x93/0xe8 [] do_IRQ+0x93/0xae [] common_interrupt+0x1a/0x20 [] mwait_idle+0x25/0x38 [] cpu_idle+0x9f/0xb9 =======================