Hi, I believe that there is an incorrect comparison in fix_lkcd_address: 059 ulonglong 060 fix_lkcd_address(ulonglong addr) 061 { 062 int i; 063 ulong offset; 064 065 for (i = 0; i < lkcd->fix_addr_num; i++) { 066 if ( (addr >=lkcd->fix_addr[i].task) && 067 (addr <= lkcd->fix_addr[i].task + STACKSIZE())){ ^^^^^- here On Itanium fix_addr[i] + STACKSIZE() may be the address of an adjacent task structure. As it stands both parts of the comparison pass if addr is the address in the fix_addr[i].task field or if it is the task structure which follows that one. The result is this it is not possible to read the task structure of the task that follows a task which is in this fixup list and zeroes are returned instead. Regards, Alan Tyson, HP. --- lkcd_common.c.orig 2007-08-27 16:51:11.000000000 +0100 +++ lkcd_common.c 2007-09-19 16:46:07.000000000 +0100 @@ -64,7 +64,7 @@ fix_lkcd_address(ulonglong addr) for (i = 0; i < lkcd->fix_addr_num; i++) { if ( (addr >=lkcd->fix_addr[i].task) && - (addr <= lkcd->fix_addr[i].task + STACKSIZE())){ + (addr < lkcd->fix_addr[i].task + STACKSIZE())){ offset = addr - lkcd->fix_addr[i].task; addr = lkcd->fix_addr[i].saddr + offset;