| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Sat, 28 Jul 2012 21:08:29 +0200 From: Eric Dumazet <eric.dumazet@...il.com> To: Cristian RodrÃguez <crrodriguez@...nsuse.org> Cc: netdev@...r.kernel.org, Gao feng <gaofeng@...fujitsu.com> Subject: Re: ipv6: BUG: unable to handle kernel paging request at 0000000101bca2be On Sat, 2012-07-28 at 13:08 -0400, Cristian RodrÃguez wrote: > Hi: > > Since late Jun, early Jul, both using stable 3.4 and now 3.5 I am > getting the following crash in the IPv6 code. > > > <1>[116145.466708] BUG: unable to handle kernel paging request at > 0000000101bca2be > <1>[116145.467797] IP: [<ffffffff8145800b>] dst_release+0x1b/0x80 > <4>[116145.468645] PGD 0 > <4>[116145.468964] Oops: 0002 [#1] SMP > <4>[116145.469479] CPU 6 > <4>[116145.469783] Modules linked in: bluetooth act_police cls_basic > cls_flow cls_fw cls_u32 sch_tbf sch_prio sch_htb sch_hfsc sch_ingress > sch_sfq bridge stp xt_statistic xt_CT xt_realm iptable_raw xt_LOG > xt_connlimit xt_addrtype xt_comment xt_recent ipt_ULOG ipt_REJECT > ipt_REDIRECT ipt_NETMAP ipt_MASQUERADE ipt_ECN ipt_CLUSTERIP ipt_ah > nf_nat_tftp nf_nat_snmp_basic nf_conntrack_snmp nf_nat_sip ip6_queue > nf_nat_pptp nf_nat_proto_gre xt_set ip_set nf_nat_irc nf_nat_h323 > nf_nat_ftp nf_nat_amanda nf_conntrack_tftp nf_conntrack_sane > nf_conntrack_sip nf_conntrack_proto_udplite nf_conntrack_proto_sctp > ts_kmp nf_conntrack_pptp nf_conntrack_proto_gre nf_conntrack_amanda > nf_conntrack_netlink xt_time nf_conntrack_netbios_ns > nf_conntrack_broadcast xt_TCPMSS nf_conntrack_irc nf_conntrack_h323 > xt_sctp xt_policy ip6t_REJECT nf_conntrack_ipv6 ip6table_raw > ip6table_mangle nf_conntrack_ftp xt_TPROXY nf_tproxy_core nf_defrag_ipv6 > xt_tcpmss xt_pkttype xt_physdev xt_owner xt_NFQUEUE xt_NFLOG > nfnetlink_log xt_multiport xt_mark xt_mac xt_limit xt_length xt_iprange > xt_helper xt_hashlimit xt_DSCP xt_dscp xt_dccp xt_conntrack xt_connmark > xt_CLASSIFY xt_AUDIT xt_tcpudp xt_state ip6table_filter iptable_nat > nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 ip6_tables nf_conntrack > iptable_mangle nfnetlink iptable_filter ip_tables x_tables cachefiles > fscache af_packet edd eeepc_wmi asus_wmi sparse_keymap rfkill > pci_hotplug acpi_cpufreq mperf coretemp wmi iTCO_wdt crc32c_intel e1000e > mei(C) joydev pcspkr ghash_clmulni_intel iTCO_vendor_support i2c_i801 > xhci_hcd aesni_intel cryptd aes_x86_64 microcode autofs4 usbhid i915 > drm_kms_helper drm ehci_hcd i2c_algo_bit usbcore usb_common video button > scsi_dh_hp_sw scsi_dh_alua scsi_dh_emc scsi_dh_rdac scsi_dh fan > processor thermal thermal_sys megaraid_sas > <4>[116145.495352] > <4>[116145.495579] Pid: 0, comm: swapper/6 Tainted: G C > 3.4.6-1-default #1 System manufacturer System Product Name/P8B WS > <4>[116145.497313] RIP: 0010:[<ffffffff8145800b>] [<ffffffff8145800b>] > dst_release+0x1b/0x80 > <4>[116145.498527] RSP: 0018:ffff88041f383ce0 EFLAGS: 00010202 > <4>[116145.499330] RAX: ffff8803c199e568 RBX: 0000000101bca23e RCX: > 0000000000000000 > <4>[116145.500407] RDX: 0000000101ba584e RSI: ffff8803c199e568 RDI: > 0000000101bca23e > <4>[116145.501484] RBP: 00000000ffffffff R08: 0000000000000025 R09: > ffff88041f383cb0 > <4>[116145.502560] R10: ffffffffa03f82e0 R11: ffff8803bf369886 R12: > ffff8803bf369886 > <4>[116145.503636] R13: 0000000000000000 R14: 0000000000000500 R15: > ffff8803ff0de0c0 > <4>[116145.504714] FS: 0000000000000000(0000) GS:ffff88041f380000(0000) > knlGS:0000000000000000 > <4>[116145.505935] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b > <4>[116145.506802] CR2: 0000000101bca2be CR3: 0000000001a0b000 CR4: > 00000000000407e0 > <4>[116145.507878] DR0: 0000000000000000 DR1: 0000000000000000 DR2: > 0000000000000000 > <4>[116145.508955] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: > 0000000000000400 > <4>[116145.510033] Process swapper/6 (pid: 0, threadinfo > ffff88040a482000, task ffff88040a4800c0) > <4>[116145.511278] Stack: > <4>[116145.511582] 0000000002000000 00000000000249f0 ffff8803bf369896 > ffffffff814f088a > <4>[116145.512754] ffff8804095fc000 ffff8803bf369896 ffff8803bf369886 > ffffffff81d5fb80 > <4>[116145.513926] 0000000000000500 ffff8804095fc000 000000000000003a > ffffffff814f0dca > <4>[116145.515100] Call Trace: > <4>[116145.515482] [<ffffffff814f088a>] rt6_do_pmtu_disc+0x27a/0x330 > <4>[116145.516369] [<ffffffff814f0dca>] rt6_pmtu_discovery+0x3a/0x70 > <4>[116145.517252] [<ffffffff81500423>] icmpv6_rcv+0x3c3/0x4a0 > <4>[116145.563503] [<ffffffff814e44e7>] ip6_input_finish+0x157/0x380 > <4>[116145.609526] [<ffffffff81450e93>] __netif_receive_skb+0x493/0x510 > <4>[116145.655203] [<ffffffff81451901>] process_backlog+0xa1/0x170 > <4>[116145.701481] [<ffffffff81451761>] net_rx_action+0x121/0x220 > <4>[116145.748076] [<ffffffff810460ad>] __do_softirq+0x9d/0x1f0 > <4>[116145.774285] [<ffffffff8155be0c>] call_softirq+0x1c/0x30 > <4>[116145.800009] [<ffffffff81004195>] do_softirq+0x65/0xa0 > <4>[116145.845329] [<ffffffff8104647e>] irq_exit+0x8e/0xb0 > <4>[116145.890313] [<ffffffff8155b8da>] > call_function_single_interrupt+0x6a/0x70 > <4>[116145.935988] [<ffffffff8131d4a9>] intel_idle+0xe9/0x160 > <4>[116145.981862] [<ffffffff81418c2e>] cpuidle_idle_call+0x9e/0x280 > <4>[116146.026965] [<ffffffff8100b53f>] cpu_idle+0x7f/0xd0 > <4>[116146.069060] Code: ff 86 80 00 00 00 48 89 77 58 c3 0f 1f 44 00 00 > 48 83 ec 18 48 85 ff 48 89 5c 24 08 48 89 6c 24 10 48 89 fb 74 16 bd ff > ff ff ff <f0> 0f c1 af 80 00 00 00 83 ed 01 78 41 85 ed 74 14 48 8b 5c 24 > <1>[116146.129910] RIP [<ffffffff8145800b>] dst_release+0x1b/0x80 > <4>[116146.172426] RSP <ffff88041f383ce0> > <4>[116146.213632] CR2: 0000000101bca2be > > It apparently appeared in either 3.4.3 or 3.4.4 and persist in 3.5.. > > Will be cool if someone can take a look... This looks like an error coming from commit 1716a96101c49186bb0b8491922fd3e69030235f (ipv6: fix problem with expired dst cache) dst_release() is called with a bogus dst pointer : 0000000101bca23e rt6_clean_expires() seems to be called where it shouldnt. Could you try reverting it ? -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists