Try to check here http://www.linode.com/wiki/index.php/CentOS
2011/2/15 Tim Skirvin <[email protected]>: > I'm running a RHEL5 system with an Infiniband card installed, > using the 'openib' driver set. When I attempt to manipulate iptables > while the infiniband drivers are loaded, the system either hangs (usually) > or kernel-panics (occasionally). > > For example: > > > stats-storage-0:/root# iptables --flush > stats-storage-0:/etc/sysconfig/network-scripts# service iptables start > Flushing firewall rules: [ OK ] > Setting chains to policy ACCEPT: filter [ OK ] > Unloading iptables modules: > > ...and there it hangs. When I then run, in another window: > > stats-storage-0:/root# service openibd stop > Unloading OpenIB kernel modules: [ OK ] > > ...then the iptables run from before completes successfully. > > Is this a known/reported bug? Or is this something new? > > Note: I have modified /etc/sysconfig/iptables-config, to comment out > this line: > > #IPTABLES_MODULES="ip_conntrack_netbios_ns" > IPTABLES_MODULES="" > > I did this in an attempt to stop the actual kernel panics, which > are of course worse. The logs from one of those kernel panics: > > iRemoving netfilter NETLINK layer. > ip_tables: (C) 2000-2006 Netfilter Core Team > Netfilter messages via NETLINK v0.30. > ip_conntrack version 2.4 (8192 buckets, 65536 max) - 304 bytes per > conntrack > Unable to handle kernel paging request at 0000000000200200 RIP: > [<ffffffff80157b5d>] list_del+0x8/0x71 > PGD 6b0eb067 PUD 6f36c067 PMD 0 > Oops: 0000 [1] SMP > last sysfs file: > /devices/pci0000:00/0000:00:02.0/0000:04:00.0/0000:05:00.0/0000:06:00.0/0000:07: > 00.0/irq > CPU 7 > Modules linked in: ip_conntrack nfnetlink nfs fscache hfsplus nfsd > exportfs nfs_acl auth_rpcgss openafs(PU) autofs4 ipmi_devintf ipmi_si > ipmi_msghandler lockd sunrpc ipt_REJECT ip6t_REJECT xt_tcpudp > ip6table_filter ip6_tables x_tables be2iscsi iscsi_tcp bnx2i cnic uio > cxgb3i cxgb3 8021q libiscsi_tcp ib_iser libiscsi2 scsi_transport_iscsi2 > scsi_transport_iscsi ib_srp rds ib_sdp ib_ipoib ipoib_helper ipv6 > xfrm_nalgo crypto_api rdma_ucm rdma_cm ib_ucm ib_uverbs ib_umad ib_cm > iw_cm ib_addr ib_sa mlx4_ib ib_mad ib_core loop dm_mirror dm_multipath > scsi_dh video backlight sbs power_meter hwmon i2c_ec i2c_core dell_wmi wmi > button battery asus_acpi acpi_memhotplug ac parport_pc lp parport mlx4_en > joydev sr_mod cdrom sg qla2xxx tpm_tis tpm mlx4_core tpm_bios bnx2 > scsi_transport_fc pcspkr i5000_edac edac_mc serio_raw dm_raid45 dm_message > dm_region_hash dm_log dm_mod dm_mem_cache ata_piix libata shpchp > megaraid_sas sd_mod scsi_mod ext3 jbd uhci_hcd ohci_hcd ehci_hcd > Pid: 11693, comm: modprobe Tainted: P 2.6.18-238.1.1.el5 #1 > RIP: 0010:[<ffffffff80157b5d>] [<ffffffff80157b5d>] list_del+0x8/0x71 > RSP: 0000:ffff81006fd83ea8 EFLAGS: 00010213 > RAX: 0000000000200200 RBX: ffff81006cdce9a8 RCX: ffff810037c2c3b8 > RDX: ffff81006cdce8b8 RSI: 0000000000000000 RDI: ffff81006cdce9a8 > RAX: 0000000000200200 RBX: ffff81006cdce9a8 RCX: ffff810037c2c3b8 > RDX: ffff81006cdce8b8 RSI: 0000000000000000 RDI: ffff81006cdce9a8 > RBP: 000000000001fff0 R08: ffff81007f06bbf8 R09: ffffffff8886f9f3 > R10: ffffffff804b1300 R11: 0000000000000000 R12: 0000000000002000 > R13: 0000000000000000 R14: ffffffff8886f9f3 R15: 0000000000000000 > FS: 00002b0c65d266e0(0000) GS:ffff81007fae03c0(0000) > knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b > > CR2: 0000000000200200 CR3: 000000006af74000 CR4: 00000000000006e0 > Process modprobe (pid: 11693, threadinfo ffff81006fd82000, task > ffff81007a652080) > Stack: ffff81006cdce8b8 ffffffff8887125d ffff81006cdce8b8 > ffffffff8887017f > 00000000000000ff 0000000000000000 0000000000000880 00000000113ac568 > 00007fff52d23520 ffffffff88870309 ffffffff8887ca00 ffffffff800a8559 > Call Trace: > [<ffffffff8887125d>] :ip_conntrack:destroy_conntrack+0x9a/0xdc > [<ffffffff8887017f>] :ip_conntrack:ip_ct_iterate_cleanup+0x30/0x142 > [<ffffffff88870309>] :ip_conntrack:ip_conntrack_cleanup+0x6a/0xc7 > [<ffffffff800a8559>] sys_delete_module+0x196/0x1c5 > [<ffffffff8005d28d>] tracesys+0xd5/0xe0 > > > Code: 48 8b 10 48 39 fa 74 1b 48 89 fe 31 c0 48 c7 c7 90 3b 2c 80 > RIP [<ffffffff80157b5d>] list_del+0x8/0x71 > RSP <ffff81006fd83ea8> > CR2: 0000000000200200 > <0>Kernel panic - not syncing: Fatal exception > > > > > > - Tim Skirvin ([email protected]) > -- > Senior Unix Systems Administrator http://www.stanford.edu/~tskirvin/ > ITS Computing Services - Sysadmin Team Stanford University > > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.10 (GNU/Linux) > > iD8DBQFNWstfkw7FUwwu4h0RAqOZAJ4iGQRqCTHC0KHKSHK4UM9DQiyxtQCgmqQL > YYH0VjaGKvZP3ObglzI0dFw= > =jKSt > -----END PGP SIGNATURE----- > > _______________________________________________ > rhelv5-list mailing list > [email protected] > https://www.redhat.com/mailman/listinfo/rhelv5-list > > -- esta es mi vida e me la vivo hasta que dios quiera _______________________________________________ rhelv5-list mailing list [email protected] https://www.redhat.com/mailman/listinfo/rhelv5-list
