BUG: unable to handle kernel NULL pointer dereference at 00000000 IP: [] cpuacct_charge+0x2f/0x38 Oops: 0002 [#1] SMP Modules linked in: nfsd lockd nfs_acl auth_rpcgss exportfs fuse sunrpc nf_conntrack_ipv6 xt_state nf_conntrack xt_tcpudp ip6t_ipv6header ip6t_REJECT ip6table_filter ip6_tables x_tables ipv6 dm_multipath wct4xxp(U) zaptel(U) ipmi_si crc_ccitt ipmi_msghandler hpwdt sg bnx2 iTCO_wdt sr_mod iTCO_vendor_support i5000_edac edac_core pcspkr cdrom ata_piix libata aacraid dm_snapshot dm_zero dm_mirror dm_log dm_mod cciss sd_mod scsi_mod ext3 jbd mbcache uhci_hcd ohci_hcd ehci_hcd [last unloaded: microcode] Pid: 4043, comm: asterisk Tainted: P (2.6.26.5-28.fc8PAE #1) EIP: 0060:[] EFLAGS: 00010086 CPU: 0 EIP is at cpuacct_charge+0x2f/0x38 EAX: 00000000 EBX: 00000000 ECX: 00000001 EDX: 0001e7bd ESI: f45c4b00 EDI: 00000000 EBP: f648cf50 ESP: f648cf48 DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068 Process asterisk (pid: 4043, ti=f648c000 task=f45c4b00 task.ti=f648d000) Stack: f45c4b28 00000001 f648cf78 c041f7de 5cec68f0 00000000 054905a8 0001e7bd 00000001 c5619c80 00000001 f783a5a8 f648cf98 c0422da8 f783a580 c5619c80 c5619cbc c06402e0 f783a580 c5619c80 f648cfac c041f363 c5619c80 f783a580 Call Trace: [] ? update_curr+0xab/0xb3 [] ? enqueue_task_fair+0x43/0x1db [] ? enqueue_task+0x4c/0x58 [] ? activate_task+0x1e/0x2b [] ? try_to_wake_up+0x17b/0x1bd [] ? wake_up_process+0xf/0x11 [] ? raise_softirq+0x68/0x77 [] ? run_local_timers+0x12/0x19 ======================= Code: 72 c0 00 55 89 e5 56 89 c6 53 89 cb 89 d1 74 20 8b 80 b0 04 00 00 8b 40 24 85 c0 74 13 8b 56 04 8b 40 0c 8b 52 10 f7 d0 8b 04 90 <01> 08 11 58 04 5b 5e 5d c3 55 89 e5 57 bf 3f 00 00 00 56 53 83 EIP: [] cpuacct_charge+0x2f/0x38 SS:ESP 0068:f648cf48 ---[ end trace 7d49b425f5ec01aa ]--- BUG: soft lockup - CPU#1 stuck for 61s! [irqbalance:2399] Modules linked in: nfsd lockd nfs_acl auth_rpcgss exportfs fuse sunrpc nf_conntrack_ipv6 xt_state nf_conntrack xt_tcpudp ip6t_ipv6header ip6t_REJECT ip6table_filter ip6_tables x_tables ipv6 dm_multipath wct4xxp(U) zaptel(U) ipmi_si crc_ccitt ipmi_msghandler hpwdt sg bnx2 iTCO_wdt sr_mod iTCO_vendor_support i5000_edac edac_core pcspkr cdrom ata_piix libata aacraid dm_snapshot dm_zero dm_mirror dm_log dm_mod cciss sd_mod scsi_mod ext3 jbd mbcache uhci_hcd ohci_hcd ehci_hcd [last unloaded: microcode] Pid: 2399, comm: irqbalance Tainted: P D (2.6.26.5-28.fc8PAE #1) EIP: 0060:[] EFLAGS: 00200293 CPU: 1 EIP is at lock_kernel+0x23/0x35 EAX: 00007371 EBX: c0731f20 ECX: e31e73b8 EDX: 00000000 ESI: e31e73b8 EDI: e31e73b8 EBP: f7117da4 ESP: f7117da4 DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068 CR0: 8005003b CR2: 00746ec0 CR3: 379fb000 CR4: 000006f0 DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 DR6: ffff0ff0 DR7: 00000400 [] proc_lookup_de+0x15/0xb0 [] proc_lookup+0x12/0x17 [] proc_root_lookup+0x11/0x2b [] do_lookup+0xb1/0x14e [] __link_path_walk+0x71f/0xaf6 [] ? seq_open+0x26/0x74 [] path_walk+0x39/0x72 [] do_path_lookup+0x123/0x185 [] __path_lookup_intent_open+0x42/0x74 [] path_lookup_open+0x10/0x12 [] do_filp_open+0x9d/0x632 [] ? hrtimer_try_to_cancel+0x5f/0x69 [] ? hrtimer_cancel+0xd/0x18 [] ? hrtimer_nanosleep+0x4a/0xa5 [] ? get_unused_fd_flags+0x57/0xd0 [] do_sys_open+0x42/0xb7 [] sys_open+0x1e/0x26 [] syscall_call+0x7/0xb ======================= BUG: soft lockup - CPU#1 stuck for 61s! [irqbalance:2399] Modules linked in: nfsd lockd nfs_acl auth_rpcgss exportfs fuse sunrpc nf_conntrack_ipv6 xt_state nf_conntrack xt_tcpudp ip6t_ipv6header ip6t_REJECT ip6table_filter ip6_tables x_tables ipv6 dm_multipath wct4xxp(U) zaptel(U) ipmi_si crc_ccitt ipmi_msghandler hpwdt sg bnx2 iTCO_wdt sr_mod iTCO_vendor_support i5000_edac edac_core pcspkr cdrom ata_piix libata aacraid dm_snapshot dm_zero dm_mirror dm_log dm_mod cciss sd_mod scsi_mod ext3 jbd mbcache uhci_hcd ohci_hcd ehci_hcd [last unloaded: microcode] Pid: 2399, comm: irqbalance Tainted: P D (2.6.26.5-28.fc8PAE #1) EIP: 0060:[] EFLAGS: 00200293 CPU: 1 EIP is at lock_kernel+0x23/0x35 EAX: 00007371 EBX: c0731f20 ECX: e31e73b8 EDX: 00000000 ESI: e31e73b8 EDI: e31e73b8 EBP: f7117da4 ESP: f7117da4 DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068 CR0: 8005003b CR2: 00746ec0 CR3: 379fb000 CR4: 000006f0 DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 DR6: ffff0ff0 DR7: 00000400 [] proc_lookup_de+0x15/0xb0 [] proc_lookup+0x12/0x17 [] proc_root_lookup+0x11/0x2b [] do_lookup+0xb1/0x14e [] __link_path_walk+0x71f/0xaf6 [] ? seq_open+0x26/0x74 [] path_walk+0x39/0x72 [] do_path_lookup+0x123/0x185 [] __path_lookup_intent_open+0x42/0x74 [] path_lookup_open+0x10/0x12 [] do_filp_open+0x9d/0x632 [] ? hrtimer_try_to_cancel+0x5f/0x69 [] ? hrtimer_cancel+0xd/0x18 [] ? hrtimer_nanosleep+0x4a/0xa5 [] ? get_unused_fd_flags+0x57/0xd0 [] do_sys_open+0x42/0xb7 [] sys_open+0x1e/0x26 [] syscall_call+0x7/0xb =======================