In article <200311051703.hA5H38nQ007123@turing-police.cc.vt.edu> (at Wed, 05 Nov 2003 12:03:08 -0500), Valdis.Kletnieks@vt.edu says: > Basic summary - when /sbin/nameif goes to rename an interface, things > go totally pear-shaped. nameif itself croaks, and apparently leaves > data structures corrupted - on a subsequent 'ifup lo' or 'shutdown -r' > the system locks up solid. > > Unable to handle kernel NULL pointer dereference at virtual address 000000d8 > printing eip: > c033eb32 : > EIP is at addrconf_sysctl_unregister+0x7/0x3a : > Call Trace: > [<c033cdda>] addrconf_notify+0xc4/0xfb > [<c012673d>] notifier_call_chain+0x1c/0x37 : Please try this. ===== net/ipv6/addrconf.c 1.74 vs edited ===== --- 1.74/net/ipv6/addrconf.c Tue Oct 28 20:10:47 2003 +++ edited/net/ipv6/addrconf.c Thu Nov 6 02:30:03 2003 @@ -1877,10 +1877,12 @@ break; case NETDEV_CHANGENAME: #ifdef CONFIG_SYSCTL - addrconf_sysctl_unregister(&idev->cnf); - neigh_sysctl_unregister(idev->nd_parms); - neigh_sysctl_register(dev, idev->nd_parms, NET_IPV6, NET_IPV6_NEIGH, "ipv6"); - addrconf_sysctl_register(idev, &idev->cnf); + if (idev) { + addrconf_sysctl_unregister(&idev->cnf); + neigh_sysctl_unregister(idev->nd_parms); + neigh_sysctl_register(dev, idev->nd_parms, NET_IPV6, NET_IPV6_NEIGH, "ipv6"); + addrconf_sysctl_register(idev, &idev->cnf); + } #endif break; }; -- Hideaki YOSHIFUJI @ USAGI Project <yoshfuji@linux-ipv6.org> GPG FP: 9022 65EB 1ECF 3AD1 0BDF 80D8 4807 F894 E062 0EEA - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
