[Crash-utility] PATCH: fix get_sock_info failure on 2.6.38

2.6.38 introduced another change in struct inet_sock that breaks net -s like this: crash-5.1.8> net -s 2494 net: invalid structure member offset: inet_opt_daddr FILE: net.c LINE: 829 FUNCTION: get_sock_info() [/home/bobm/bin/crash-5.1.8] error trace: 4cccca => 4cb773 => 4ca4c0 => 4f766a PID: 2494 TASK: ffff8801226de540 CPU: 1 COMMAND: "racoon" FD SOCKET SOCK FAMILY:TYPE SOURCE-PORT DESTINATION-PORT 4f766a: OFFSET_verify+202 4ca4c0: sym_socket_dump+1920 4cb773: dump_sockets_workhorse+1571 4cccca: cmd_net+3658 3 ffff8801229470c0 ffff88011f8dfc00 net: invalid structure member offset: inet_opt_daddr FILE: net.c LINE: 829 FUNCTION: get_sock_info() This patch adds a new final clause to net_init to handle the case where inet_sock no longer contains inet_daddr (the previous final clause): struct inet_sock { /* sk and pinet6 has to be the first two members of inet_sock */ struct sock sk; #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) struct ipv6_pinfo *pinet6; #endif /* Socket demultiplex comparisons on incoming packets. */ #define inet_daddr sk.__sk_common.skc_daddr <<<<<<<<<<< #define inet_rcv_saddr sk.__sk_common.skc_rcv_saddr <<<<<<<<<<<< The patch cheats by depending on inet_sock having struct sock as its first element and struct sock having struct sock_common as its first element without actually verifying that. Bob Montgomery