Sep 24 10:59:42 w1a kernel: [868546.411944] BUG: unable to handle kernel NULL pointer dereference at 0000000000000002 Sep 24 10:59:42 w1a kernel: [868546.415642] IP: [<0000000000000002>] 0x1 Sep 24 10:59:42 w1a kernel: [868546.415758] PGD 0 Sep 24 10:59:42 w1a kernel: [868546.420919] Oops: 0010 [#1] SMP Sep 24 10:59:42 w1a kernel: [868546.420919] Modules linked in: ip6table_filter(F) ip6_tables(F) rpcsec_gss_krb5 nfsv4(F) nfsd(F) nfs_acl(F) auth_rpcgss(F) nfs(F) lockd(F) sunrpc(F) cachefiles(F) fscache(F) xt_TCPMSS(F) act_police(F) cls_flow(F) cls_fw(F) cls_u32(F) sch_htb(F) sch_hfsc(F) sch_ingress(F) sch_sfq(F) bridge(F) xt_LOG(F) xt_time(F) xt_connlimit(F) xt_realm(F) xt_addrtype(F) iptable_raw(F) xt_comment(F) xt_recent(F) xt_policy(F) xt_nat(F) ipt_ULOG(F) ipt_REJECT(F) ipt_MASQUERADE(F) ipt_ECN(F) ipt_CLUSTERIP(F) ipt_ah(F) nf_nat_tftp(F) nf_nat_snmp_basic(F) nf_conntrack_snmp(F) nf_nat_sip(F) nf_nat_pptp(F) nf_nat_proto_gre(F) nf_nat_irc(F) nf_nat_h323(F) nf_nat_ftp(F) nf_nat_amanda(F) ts_kmp(F) nf_conntrack_amanda(F) nf_conntrack_sane(F) nf_conntrack_tftp(F) nf_conntrack_sip(F) nf_conntrack_proto_sctp(F) nf_conntrack_pptp(F) nf_conntrack_proto_gre(F) nf_conntrack_netlink(F) nf_conntrack_netbios_ns(F) nf_conntrack_broadcast(F) nf_conntrack_irc(F) nf_conntrack_h323(F) nf_conntrack_ftp(F) xt_TPROXY(F) nf Sep 24 10:59:42 w1a kernel: _tproxy_core(F) nf_defrag_ipv6(F) xt_tcpmss(F) xt_pkttype(F) xt_physdev(F) xt_owner(F) xt_NFQUEUE(F) xt_NFLOG(F) nfnetlink_log(F) xt_multiport(F) xt_mark(F) xt_mac(F) xt_limit(F) xt_length(F) xt_iprange(F) xt_helper(F) xt_hashlimit(F) xt_DSCP(F) xt_dscp(F) xt_dccp(F) xt_conntrack(F) xt_connmark(F) xt_CLASSIFY(F) xt_tcpudp(F) xt_state(F) iptable_nat(F) nf_nat_ipv4(F) nf_nat(F) nf_conntrack_ipv4(F) nf_defrag_ipv4(F) nf_conntrack(F) iptable_mangle(F) nfnetlink(F) iptable_filter(F) ip_tables(F) x_tables(F) ipip(F) ip_tunnel(F) tunnel4(F) bonding(F) 8021q(F) mrp(F) garp(F) stp(F) llc(F) xfs(F) libcrc32c(F) r8169 kvm_amd(F) kvm(F) radeon ttm drm_kms_helper snd_pcm(F) drm snd_timer(F) edac_core snd(F) tg3 soundcore(F) snd_page_alloc(F) e100 psmouse(F) ptp(F) pcspkr ohci_pci mac_hid k8temp serio_raw(F) pps_core(F) edac_mce_amd tpm_tis i2c_piix4 pata_acpi sata_svw i2c_algo_bit pata_serverworks mii(F) sata_via sata_sis sata_sil sata_nv raid1(F) arcmsr shpchp Sep 24 10:59:42 w1a kernel: [868546.480873] CPU: 1 PID: 23923 Comm: kworker/u17:0 Tainted: GF W 3.11.0-7-generic #13-Ubuntu Sep 24 10:59:42 w1a kernel: [868546.480873] Hardware name: empty empty/Tyan Transport GT24-B3992, BIOS 080011 06/05/2007 Sep 24 10:59:42 w1a kernel: [868546.480873] Workqueue: fscache_object fscache_object_work_func [fscache] Sep 24 10:59:42 w1a kernel: [868546.480873] task: ffff880062665dc0 ti: ffff8801511f2000 task.ti: ffff8801511f2000 Sep 24 10:59:42 w1a kernel: [868546.480873] RIP: 0010:[<0000000000000002>] [<0000000000000002>] 0x1 Sep 24 10:59:42 w1a kernel: [868546.480873] RSP: 0018:ffff8801511f3df0 EFLAGS: 00010202 Sep 24 10:59:42 w1a kernel: [868546.480873] RAX: ffffffffa07115a0 RBX: ffff880124760600 RCX: ffff88024fe900b0 Sep 24 10:59:42 w1a kernel: [868546.480873] RDX: 0000000000000002 RSI: 00000000ffffffff RDI: ffff880124760600 Sep 24 10:59:42 w1a kernel: [868546.480873] RBP: ffff8801511f3e20 R08: 0000000000000018 R09: dffaf6290a360690 Sep 24 10:59:42 w1a kernel: [868546.480873] R10: dffaf6290a360690 R11: 0000000000000000 R12: ffff880124760600 Sep 24 10:59:42 w1a kernel: [868546.480873] R13: ffff880124760600 R14: 0000000000000000 R15: ffff880124760690 Sep 24 10:59:42 w1a kernel: [868546.480873] FS: 00007f7f79f6a740(0000) GS:ffff880237c80000(0000) knlGS:0000000000000000 Sep 24 10:59:42 w1a kernel: [868546.480873] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b Sep 24 10:59:42 w1a kernel: [868546.480873] CR2: 0000000000000002 CR3: 00000001023fe000 CR4: 00000000000007e0 Sep 24 10:59:42 w1a kernel: [868546.480873] Stack: Sep 24 10:59:42 w1a kernel: [868546.480873] ffffffffa070d1f3 ffff880124760690 ffff88024fe90080 ffff880237812400 Sep 24 10:59:42 w1a kernel: [868546.480873] ffff880234a5d400 0000000000000220 ffff8801511f3e68 ffffffff8107cfbc Sep 24 10:59:42 w1a kernel: [868546.480873] 000000004fe90080 0000000000000000 ffff88024fe90080 ffff880237812400 Sep 24 10:59:42 w1a kernel: [868546.480873] Call Trace: Sep 24 10:59:42 w1a kernel: [868546.480873] [] ? fscache_object_work_func+0xb3/0x1f0 [fscache] Sep 24 10:59:42 w1a kernel: [868546.480873] [] process_one_work+0x17c/0x430 Sep 24 10:59:42 w1a kernel: [868546.480873] [] worker_thread+0x223/0x3c0 Sep 24 10:59:42 w1a kernel: [868546.480873] [] ? manage_workers.isra.24+0x2a0/0x2a0 Sep 24 10:59:42 w1a kernel: [868546.480873] [] kthread+0xc0/0xd0 Sep 24 10:59:42 w1a kernel: [868546.480873] [] ? kthread_create_on_node+0x120/0x120 Sep 24 10:59:42 w1a kernel: [868546.480873] [] ret_from_fork+0x7c/0xb0 Sep 24 10:59:42 w1a kernel: [868546.480873] [] ? kthread_create_on_node+0x120/0x120 Sep 24 10:59:42 w1a kernel: [868546.480873] Code: Bad RIP value. Sep 24 10:59:42 w1a kernel: [868546.480873] RIP [<0000000000000002>] 0x1 Sep 24 10:59:42 w1a kernel: [868546.480873] RSP Sep 24 10:59:42 w1a kernel: [868546.480873] CR2: 0000000000000002 Sep 24 10:59:42 w1a kernel: [868546.674844] ---[ end trace add54aed08736b4f ]--- Write failed: Broken pipe