Showing error 769

User: Jiri Slaby
Error type: Invalid Pointer Dereference
Error type description: A pointer which is invalid is being dereferenced
File location: drivers/misc/sgi-xp/xpc_main.c
Line in file: 1041
Project: Linux Kernel
Project version: 2.6.28
Tools: Stanse (1.2)
Entered: 2011-11-07 22:22:22 UTC

Source: 

1011
1012        /* a 'rmmod XPC' and a 'reboot' cannot both end up here together */
1013        DBUG_ON(xpc_exiting == 1);
1014
1015        /*
1016         * Let the heartbeat checker thread and the discovery thread
1017         * (if one is running) know that they should exit. Also wake up
1018         * the heartbeat checker thread in case it's sleeping.
1019         */
1020        xpc_exiting = 1;
1021        wake_up_interruptible(&xpc_activate_IRQ_wq);
1022
1023        /* wait for the discovery thread to exit */
1024        wait_for_completion(&xpc_discovery_exited);
1025
1026        /* wait for the heartbeat checker thread to exit */
1027        wait_for_completion(&xpc_hb_checker_exited);
1028
1029        /* sleep for a 1/3 of a second or so */
1030        (void)msleep_interruptible(300);
1031
1032        /* wait for all partitions to become inactive */
1033
1034        printmsg_time = jiffies + (XPC_DEACTIVATE_PRINTMSG_INTERVAL * HZ);
1035        xpc_disengage_timedout = 0;
1036
1037        do {
1038                active_part_count = 0;
1039
1040                for (partid = 0; partid < xp_max_npartitions; partid++) {
1041                        part = &xpc_partitions[partid];
1042
1043                        if (xpc_partition_disengaged(part) &&
1044                            part->act_state == XPC_P_AS_INACTIVE) {
1045                                continue;
1046                        }
1047
1048                        active_part_count++;
1049
1050                        XPC_DEACTIVATE_PARTITION(part, reason);
1051
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